Food Waste In The United Kingdom
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Food waste Food loss and waste is food that is not eaten. The causes of food waste or loss are numerous and occur throughout the food system, during production, processing, distribution, retail and food service sales, and consumption. Overall, about o ...
in the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
is a subject of environmental, and socioeconomic concern that has received widespread media coverage and been met with varying responses from government. Since 1915,
food waste Food loss and waste is food that is not eaten. The causes of food waste or loss are numerous and occur throughout the food system, during production, processing, distribution, retail and food service sales, and consumption. Overall, about o ...
has been identified as a considerable problem and has been the subject of ongoing media attention, intensifying with the launch of the " Love Food, Hate Waste" campaign in 2007. Food waste has been discussed in newspaper articles, news reports and television programmes, which have increased awareness of it as a public issue. To tackle waste issues, encompassing food waste, the government-funded "
Waste & Resources Action Programme WRAP (Waste & Resources Action Programme) is a British registered charity. It works with businesses, individuals and communities to achieve a circular economy, by helping them reduce waste, develop sustainable products and use resources in an eff ...
" (WRAP) was created in 2000. A significant proportion of food waste is produced by the domestic household, which, in 2007, created 6,700,000
tonne The tonne ( or ; symbol: t) is a unit of mass equal to 1000  kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton ( United State ...
s of food waste. Potatoes, bread slices and apples are respectively the most wasted foods by quantity, while salads are thrown away in the greatest proportion. A majority of wasted food is avoidable, with the rest being divided almost equally by foods which are unavoidable (e.g.
tea bag A tea bag, or the compound teabag, is a small, porous, sealed bag or packet, typically containing tea leaves or the leaves of other herbs, which is immersed in water to steep and make an infusion. Originally used only for tea (''Camellia ...
s) and unavoidable due to preference (e.g. bread crusts) or cooking type (e.g. potato skins). Reducing the amount of food waste has been deemed critical if the UK is to meet international targets on climate change, limiting
greenhouse gas emissions Greenhouse gas emissions from human activities strengthen the greenhouse effect, contributing to climate change. Most is carbon dioxide from burning fossil fuels: coal, oil, and natural gas. The largest emitters include coal in China and ...
, and meet obligations under the European Landfill Directive to reduce biodegradable waste going to landfill. Equally great emphasis has been placed on the reduction of food waste, across all
developed countries A developed country (or industrialized country, high-income country, more economically developed country (MEDC), advanced country) is a sovereign state that has a high quality of life, developed economy and advanced technological infrastruct ...
, as a means of ending the global food crisis that leaves millions worldwide starving and impoverished. In the context of the 2007–2008 world food price crisis, food waste was discussed at the
34th G8 summit The 34th G8 summit was held in the town of Tōyako, Hokkaido, Japan, on July 7–9, 2008. The locations of previous summits hosted by Japan include Tokyo (1979, 1986, 1993) and Nago, Okinawa (2000). The G8 Summit has evolved beyond being a gather ...
in Hokkaidō, Japan. Then-
UK Prime Minister The prime minister of the United Kingdom is the head of government of the United Kingdom. The prime minister advises the sovereign on the exercise of much of the royal prerogative, chairs the Cabinet and selects its ministers. As modern pr ...
Gordon Brown James Gordon Brown (born 20 February 1951) is a British former politician who served as Prime Minister of the United Kingdom and Leader of the Labour Party from 2007 to 2010. He previously served as Chancellor of the Exchequer in Tony B ...
said of the issue "We must do more to deal with unnecessary demand, such as by all of us doing more to cut our food waste". In June 2009, then- Environment Secretary
Hilary Benn Hilary James Wedgwood Benn (born 26 November 1953) is a British Labour Party politician who has been the Member of Parliament (MP) for Leeds Central since a by-election in 1999. He served in the Cabinet from 2003 to 2010, under both Tony Bl ...
announced the Government's "War on waste", a programme aimed at reducing Britain's food waste. The proposed plans under the scheme included: scrapping
best before Best or The Best may refer to: People * Best (surname), people with the surname Best * Best (footballer, born 1968), retired Portuguese footballer Companies and organizations * Best & Co., an 1879–1971 clothing chain * Best Lock Corporation ...
and limiting sell by labels on food, creating new food packaging sizes, constructing more "on-the-go" recycling points and unveiling five flagship anaerobic digestion plants. Two years after its launch, the "Love Food, Hate Waste" campaign was claiming it had already prevented 137,000 tonnes of waste and, through the help it had given to over 2,000,000 households, had made savings of £300,000,000.


History

Food waste was identified as a problem in the UK as early as World War I. Combating food waste was one of the initial goals of the
Women's Institutes The Women's Institute (WI) is a community-based organisation for women in the United Kingdom, Canada, South Africa and New Zealand. The movement was founded in Stoney Creek, Ontario, Canada, by Erland and Janet Lee with Adelaide Hoodless being t ...
(WI), set up in 1915, and remains a subject of their campaigns.
Rationing Rationing is the controlled distribution of scarce resources, goods, services, or an artificial restriction of demand. Rationing controls the size of the ration, which is one's allowed portion of the resources being distributed on a particular ...
was adopted during World War I, although it was voluntary, from February 1917; it was only between December 1917 and February 1918 that rationing began, in stages, to be made compulsory. Available o
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As well, there is no evidence to suggest that by 1918 fines were imposed on either individuals or businesses for wasting food. Meanwhile, in the United States (where shortages were hardly comparable), legislators considered laws restricting the distribution of food in order to cut waste, breaches of which might be punishable by fines or imprisonment. During World War II, rationing was imposed almost immediately. Restrictions were immediately more stringent than in the Great War as with effect from 8 January 1940, ration books were issued and most foods were subject to ration. By August 1940, legislation was passed that made the wasting of food a prisonable offence. Posters encouraged kitchen waste to be used for feeding animals, primarily swine but also
poultry Poultry () are domesticated birds kept by humans for their eggs, their meat or their feathers. These birds are most typically members of the superorder Galloanserae (fowl), especially the order Galliformes (which includes chickens, quails, ...
. Many of the methods suggested by current campaigns to prevent food waste have taken inspiration from those of World War II. Despite this, it remains debatable whether the waste campaigns and rationing, during and post-WWII, achieved any long-term change in people's attitudes towards waste; WRAP's report on domestic household waste found older people to waste as much avoidable waste as younger people.Ventour, pp. 181-3. Further, as early as 1980, only twenty-five years after rationing was fully abolished, a journal article published that year found significant levels of waste at home, in restaurants and in sectors of the food industry. However, the rising amount of food waste could also be attributed to a change of lifestyle, for instance the buying of produce which has a shorter shelf life; which would involuntarily lead to more food being thrown away. By the late-1990s, things had worsened, and the food manufacturing sector was estimated to be generating over 8,000,000 tonnes of food waste annually.Thankappan, p. 1. A documentary in 1998 revealed tonnes of edible food being discarded at a
Tesco Tesco plc () is a British multinational groceries and general merchandise retailer headquartered in Welwyn Garden City, England. In 2011 it was the third-largest retailer in the world measured by gross revenues and the ninth-largest in th ...
store, provoking a renewed response on the issue of food waste. In 2000, the UK Government created the
Waste & Resources Action Programme WRAP (Waste & Resources Action Programme) is a British registered charity. It works with businesses, individuals and communities to achieve a circular economy, by helping them reduce waste, develop sustainable products and use resources in an eff ...
(WRAP), a government-funded, not-for-profit company that advises on how to reduce waste and use resources efficiently. In 2007, WRAP launched the "Love Food, Hate Waste" campaign and returned food waste to the forefront of the news and public agenda. Two years later, the "Love Food, Hate Waste" campaign claimed to have prevented 137,000 tonnes of waste being sent to landfill and saved £300,000,000. In 2005, facing "limited information about the amounts and types of food waste produced", WRAP launched a "major research programme" which would lead to the publishing of "''The food we waste report''" on 8 May 2008. Believed at the time to be "the first of its kind in the world", the report interviewed 2,175 householders and collected waste from 2,138 of them. Since the developments of 2007-08, food waste has continued to be a subject of attention, discussed in almost every major UK newspaper, often with issues such as climate change and famine in African nations. To reduce the impact of the aforementioned, food waste has been among the topics of discussion at recent International Summits; food waste was debated during the
34th G8 summit The 34th G8 summit was held in the town of Tōyako, Hokkaido, Japan, on July 7–9, 2008. The locations of previous summits hosted by Japan include Tokyo (1979, 1986, 1993) and Nago, Okinawa (2000). The G8 Summit has evolved beyond being a gather ...
in Hokkaidō, Japan, as part of the discussion on the
2007–2008 world food price crisis World food prices increased dramatically in 2007 and the first and second quarter of 2008, creating a global crisis and causing political and economic instability and social unrest in both poor and developed nations. Although the media spot ...
. In June 2009, then-Environment Secretary
Hilary Benn Hilary James Wedgwood Benn (born 26 November 1953) is a British Labour Party politician who has been the Member of Parliament (MP) for Leeds Central since a by-election in 1999. He served in the Cabinet from 2003 to 2010, under both Tony Bl ...
announced the "War on waste", new government plans aimed at reducing Britain's food waste. Planned is the removal of "
best before Best or The Best may refer to: People * Best (surname), people with the surname Best * Best (footballer, born 1968), retired Portuguese footballer Companies and organizations * Best & Co., an 1879–1971 clothing chain * Best Lock Corporation ...
" labels and the limiting of " sell by" labels on foods. New food packaging sizes are planned to be introduced, coming as EU rules on packaging sizes are lifted and people are increasingly living alone. Five flagship anaerobic digestion plants that will demonstrate "cutting-edge technology" are to be built before the end of March 2011; they will together receive a grant of £10,000,000 from WRAP's "Anaerobic Digestion Demonstration Programme". Liz Goodwin, WRAP Chief Executive Officer, said of the five projects: "These projects are truly ground-breaking. Between them, they demonstrate how anaerobic digestion can help the UK efficiently meet the challenges of reducing carbon emissions and improving sustainable food production." The UK Government's "Resources and Waste Strategy", published in December 2018, set out current government policy on "how we will preserve our stock of material resources by minimising waste, promoting resource efficiency and moving towards a circular economy". In relation to food waste, chapter 5 of the strategy set out objectives to: *redistribute surplus food more effectively to those who need it most, before it can go to waste *consult on annual reporting of food surplus and waste generated by larger food businesses *consult on legal powers to introduce mandatory food waste targets and surplus food redistribution obligations *publish a new food surplus and
waste hierarchy Waste hierarchy is a tool used in the evaluation of processes that protect the environment alongside resource and energy consumption from most favourable to least favourable actions. The hierarchy establishes preferred program priorities based ...
*promote awareness of the food waste issue by appointing a new food waste champion, and *support cross sector collaboration through the Courtauld 2025 commitment.
Ben Elliot Benjamin William Elliot (born 11 August 1975) is a British businessman and fund-raiser for the Conservative Party who served as Co-Chairman of the Conservative Party from July 2019 alongside James Cleverly (2019–2020), Amanda Milling (2020 ...
was appointed by Michael Gove, then the Secretary of State for Environment, as the government's first Food Surplus and Waste Champion.


Causes


Households

The single largest producer of food
waste in the United Kingdom It is estimated that 290 million tonnes of waste was produced in the United Kingdom in 2008 but volumes are declining. In 2012 municipal solid waste generation was almost 30 million tonnes, according to Waste Atlas Platform. The National Waste S ...
is the domestic household. In 2007, households created 6,700,000
tonne The tonne ( or ; symbol: t) is a unit of mass equal to 1000  kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton ( United State ...
s of food waste – accounting for 19 per cent of all
municipal solid waste Municipal solid waste (MSW), commonly known as trash or garbage in the United States and rubbish in Britain, is a waste type consisting of everyday items that are discarded by the public. "Garbage" can also refer specifically to food waste ...
. Potatoes account for the largest quantity of avoidable food disposed of; 359,000 tonnes per year are thrown away, 49 per cent (177,400 tonnes) of which are untouched.Ventour, p. 27. Bread slices account for the second food type most disposed of (328,000 tonnes per year), and apples the third (190,000 tonnes per year). Salad is disposed of in the greatest proportion - 45 per cent of all salad purchased by weight will be thrown away uneaten. Much of the food thrown away could have been avoided (4,100,000 tonnes, 61 per cent of the total amount of food waste) and with better management could have been eaten or used.Ventour, p. 4. (Key facts), pp. 23-25. Unavoidable foods, such as vegetable peelings and tea bags, account for 19 per cent of the total, with the remaining 20 per cent being unavoidable through preferences (e.g. bread crusts) and cooking types (e.g. potato skins). However, the vast majority of consumers (90%) are unaware of the amount of food they throw away; individuals who believed that their household wasted no food were shown to be throwing away 88 kg of avoidable food per year. The amount of food waste produced by a household and its occupants is affected by several factors; WRAP found the most impacting factors to be: firstly the size of the household, followed by the age of the individual occupants and finally the household composition (e.g. single occupant household).Ventour, p. 198. The other factors: job status, lifestage, ethnicity and occupation grouping of individuals were found to have less correlation between the amount of avoidable waste. Regarding household size, the relationship is not proportional (two occupants do not dispose of twice as much food waste as one occupant); single-occupancy households, on average, throw away : per week the least food waste by weight but the most proportionately.Ventour, p. 174. This disproportional wastage has been partially attributed to food packaging sizes being largely inappropriate for people living on their own. Families with children (under the age of 16), on a per household per week basis, are shown to waste the most food by weight ();Ventour, p. 173. when taken individually however, members of a family that includes children waste the least food (). Contrary to both previous research and conventional wisdom, the report discovered that older people waste as much avoidable food as younger people (1.2 kg per person per week);Ventour, p. 5. in terms of mean average cost and weight of food waste, older people do waste less, although for retired households this may be because they are smaller.


Retailers

Other sectors also contribute food waste. The food industry produces large amounts of food waste, with retailers alone generating 1,600,000 tonnes of food waste per year. Supermarkets particularly have been criticised for wasting items which are damaged or unsold (what the industry calls 'surplus food'), but that often remain edible. However, exact statistics for the amount of food wasted by supermarkets is mostly unavailable; although a few voluntarily release data on food waste, it is not required by law. Similarly, limited information is available on amounts generated by the agricultural sector. Before a reversal of
European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been de ...
policy in 2008, which came into effect on 1 July 2009, misshaped or 'wonky' fruit and vegetables could not be sold by retailers and were required to be thrown away.


Impact

Food waste puts a large burden on the finances of each household and local councils in the UK; wasted food is estimated to cost each British household £250–£400 per year, accumulating to £15,000–£24,000 over a lifetime. This comes from the total purchasing cost of the food against what is thrown away uneaten. Additionally, households pay for the collection and disposal of food waste by their local council in the form of
council tax Council Tax is a local taxation system used in England, Scotland and Wales. It is a tax on domestic property, which was introduced in 1993 by the Local Government Finance Act 1992, replacing the short-lived Community Charge, which in turn re ...
. For councils, the cost of food waste comes from its collection and disposal as a part of the
waste stream Waste comes in many different forms and may be categorized in a variety of ways. The types listed here are not necessarily exclusive and there may be considerable overlap so that one waste entity may fall into one to many types. * Agricultural ...
; this is especially an issue for councils that run separate food waste collections. Food waste is generally considered to have a damaging effect on the
environment Environment most often refers to: __NOTOC__ * Natural environment, all living and non-living things occurring naturally * Biophysical environment, the physical and biological factors along with their chemical interactions that affect an organism or ...
; a reduction in food waste is considered critical if the UK is to meet obligations under the European Landfill Directive to reduce biodegradable waste going to landfill and favourable considering international targets on climate change, limiting
greenhouse gas emissions Greenhouse gas emissions from human activities strengthen the greenhouse effect, contributing to climate change. Most is carbon dioxide from burning fossil fuels: coal, oil, and natural gas. The largest emitters include coal in China and ...
. When disposed of in landfill, food waste releases
methane Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane on Ea ...
, a relatively damaging greenhouse gas, and leachate, a
toxin A toxin is a naturally occurring organic poison produced by metabolic activities of living cells or organisms. Toxins occur especially as a protein or conjugated protein. The term toxin was first used by organic chemist Ludwig Brieger (1849 ...
capable of considerable
groundwater pollution Groundwater pollution (also called groundwater contamination) occurs when pollutants are released to the ground and make their way into groundwater. This type of water pollution can also occur naturally due to the presence of a minor and unwante ...
. The food supply chain accounts for a fifth of UK carbon emissions; the production, storage and transportation of food to homes requires large amounts of energy. The effects of stopping food waste that can potentially be prevented has been likened to removing one in five cars from UK roads. Internationally, food waste's effect on the environment has been an issue. Ireland is facing fines of millions of
euro The euro ( symbol: €; code: EUR) is the official currency of 19 out of the member states of the European Union (EU). This group of states is known as the eurozone or, officially, the euro area, and includes about 340 million citizens . ...
s if the amount of biodegradable waste it sends to landfill does not fall below the maximum quantity set by the European Union's
Landfill Directive The Landfill Directive, more formally Council Directive 1999/31/EC of 26 April 1999 is a European Union directive that regulates waste management of landfills in the European Union. It was implemented by its Member States by 16 July 2001. The D ...
. By 2010, the same directive will impose fines of £40m a year across England, rising to £205m by 2013, if its own targets on biodegradable municipal waste are not met; the amount of biodegradable municipal waste being sent to landfill in 2010 must be 75% of that sent in 1995, by 2013 it must be 50% and by 2020 it must be 35%. In the context of the
2007–2008 world food price crisis World food prices increased dramatically in 2007 and the first and second quarter of 2008, creating a global crisis and causing political and economic instability and social unrest in both poor and developed nations. Although the media spot ...
and potential food shortages, food waste is an important and impacting issue. The
United Nations Environment Programme The United Nations Environment Programme (UNEP) is responsible for coordinating responses to environmental issues within the United Nations system. It was established by Maurice Strong, its first director, after the United Nations Conference on th ...
(UNEP) identified food waste as being a critical problem, a view shared by a Cabinet Office report on food; it said that doing nothing to solve it would lead to severe food shortages, which may trigger food price climbs of up to 50%. With a third of food purchased in the UK never eaten, the country was singled out in the report. UNEP Executive Director
Achim Steiner Achim Steiner (born 17 May 1961) is a Brazilian-born environmentalist who currently serves as the administrator of the United Nations Development Programme and chairman of United Nations Sustainable Development Group. Before joining UNDP, he w ...
said that: "Over half of the food produced today is either lost, wasted or discarded as a result of inefficiency in the human-managed food chain. There is evidence within the report he Environmental Food crises: Environment's role in averting future food crisesthat the world could feed the entire projected population growth alone by becoming more efficient while also ensuring the survival of wild animals, birds and fish on this planet."


Response


Prevention

To reduce the food waste produced (often unintentionally or unavoidably, due to lifestyle) by consumers, advisory campaigns and articles have put forward varying advice and suggestions. The following strategies: planning before food shopping, understanding food date labels and using leftovers in other meals, are universally agreed to be effective in preventing food waste. Planning, before food shopping, and knowing what purchases are necessary is among ways of reducing food waste;
buy one, get one free "Buy one, get one free" or "two for the price of one" is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the sec ...
(BOGOF) offers have been criticised for encouraging customers to purchase food items that are eventually thrown away; as part of its own campaign on food waste, supermarket retailer
Morrisons Wm Morrison Supermarkets, trading as Morrisons, is the fifth largest supermarket chain in the United Kingdom. As of 2021, the company had 497 supermarkets across England, Wales and Scotland, as well as one in Gibraltar. The company is headqu ...
is to offer “One Free to Freeze” as a replacement for BOGOFs, with hopes that these promotions will encourage customers to plan ahead. Understanding food storage and food date labels is an important, but currently problematic, measure; in 2008, research by the
Food Standards Agency , type = Non-ministerial government department , nativename = , nativename_a = , nativename_r = , logo = Food Standards Agency.svg , logo_width = , logo_caption = , seal = , seal_width = , seal_caption = , picture = , picture_width = ...
(FSA) showed that food dates were poorly understood by consumers; only 36 per cent of people interpreted a best before date as a use by date and only 55 per cent correctly interpreted use by dates. Food date labels are planned to undergo radical changes as part of the "War on waste". Leftover foods can and are encouraged to be used in other meals; currently this is not widely undertaken due to a "lack of confidence". Specialist cookbooks and waste campaigns include recipes which are designed to incorporate typical leftovers and require minimal cooking skill. Sectors of the food industry (manufacturing and retail) have pledged to reduce the amount of food they directly waste, and additionally what they cause households to waste indirectly. This is planned to happen through a combination of: effective labeling, pack size range, storage advice and packaging that extends the duration of food freshness. The latest initiative in May 2009, rather than a new policy, is seen as an expansion to ongoing attempts to reduce the wider
food packaging Food packaging is a packaging system specifically designed for food and represents one of the most important aspects among the processes involved in the food industry, as it provides protection from chemical, biological and physical alteratio ...
. The aim is to cut UK household food waste by 155,000 tonnes (2.5% of total waste) before the end of 2010 by helping UK households prevent food going to waste. Food charities, the most widely known being
FareShare FareShare is a charity network aimed at relieving food poverty and reducing food waste in the UK, which has been running since 1994. It does this by obtaining good quality surplus food from the food industry that would otherwise have gone to wast ...
, arrange the distribution of surplus food from the food industry among disadvantaged people in the community.


Collection

The majority of UK authorities (some have varying or specific policy) collect food waste together with
municipal waste Municipal solid waste (MSW), commonly known as trash or garbage in the United States and rubbish in Britain, is a waste type consisting of everyday items that are discarded by the public. "Garbage" can also refer specifically to food waste, a ...
; estimates made in 2007 put the amount of food waste collected separately, for either
composting Compost is a mixture of ingredients used as plant fertilizer and to improve soil's physical, chemical and biological properties. It is commonly prepared by decomposing plant, food waste, recycling organic materials and manure. The resulting m ...
or
anaerobic digestion Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to Waste management, manage waste or to produce fuels. Mu ...
, at only 2% of what is available.Hogg, p. 4. Where food waste is collected separately, it is usually incorporated into an existing garden waste collection.Hogg, pp. 17-18. If applicable, separate collections for garden and food waste typically run on intervening fortnightly weeks to those of municipal waste and share infrastructure and transport. It has been suggested that given its proportion of the
waste stream Waste comes in many different forms and may be categorized in a variety of ways. The types listed here are not necessarily exclusive and there may be considerable overlap so that one waste entity may fall into one to many types. * Agricultural ...
and the lack of distinct collections, food waste is not currently being targeted appropriately. However proposals by the
European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been de ...
, which would require local authorities to provide separate collection of food and garden waste, have been met with opposition; critics of the proposals argue that local authorities understand the specific needs of the areas they serve, and that they should decide waste policy. Advocates of the proposals say that it will ensure energy is not wasted in sorting
biodegradable waste Biodegradable waste includes any organic matter in waste which can be broken down into carbon dioxide, water, methane or simple organic molecules by micro-organisms and other living things by composting, aerobic digestion, anaerobic digestion ...
from other materials. Figures from WRAP revealed the most efficient method of collecting food waste to be separate collections, followed by mixed green and food waste on a weekly basis. A mixed fortnightly collection was shown to be the worst performing. This was considered confirmation of earlier suspicions that, if carried out correctly, separate collections can result in less wastage of biodegradable waste. A widespread pilot scheme for separate food waste collection, involving nineteen
English local authorities Local government in England broadly consists of three layers: regional authorities, local authorities and parish councils. Legislation concerning English local government is passed by Parliament, as England does not have a devolved parliament. Th ...
, achieved success and 'high levels of satisfaction' from households. One option for separating food waste at source is the in-sink
food-waste disposer A garbage disposal unit (also known as a waste disposal unit, garbage disposer, garburator etc.) is a device, usually electrically powered, installed under a kitchen sink between the sink's drain and the trap. The disposal unit shreds food w ...
(FWD). It was invented in 1928 and is used in 50% of households in the USA, 34% in New Zealand, 20% in Australia and increasingly in some European countries, notably Sweden.Evans, T.D.; Andersson, P.; Wievegg, A. and Carlsson, I. (2010) Surahammar – a case study of the impacts of installing food waste disposers in fifty percent of households. Water Environ. J. 241 309-319 A FWD has no blades or knives, it has a grind chamber, the floor of which is a spinning disc with lugs spin the waste against the perforated wall of the chamber, particles exit when they are small enough. measured particle size distribution and found 98% <2mm. They also measured settleability and found the ground waste would be carried/resuspended easily in conventionally designed sewers. estimated the Global Warming Potentials (100 year) of options for food
waste management Waste management or waste disposal includes the processes and actions required to manage waste from its inception to its final disposal. This includes the collection, transport, treatment and disposal of waste, together with monitorin ...
were landfill +740 kgCO2e/t food waste, incineration +13, centralised composting -14 and that anaerobic digestion was about -170 kgCO2e/t food waste whether it was kerbside collected and transported by truck or FWD to sewer to AD at a wastewater treatment works. In a follow-up paper, analysed data from Surahammar, Sweden comparing the time when there were no FWD with the present when 50% of households have FWD. This study verified laboratory etc. work published earlier by other workers. They found there was no increase in wastewater treatment works' cost, nor the volume of wastewater but that there was a 46% increase in biogas.


Disposal

Food waste remains primarily disposed to landfill (54 per cent of total municipal waste was disposed of in this way in 2007/8), although year-on-year the amount being sent to landfill is decreasing.
Composting Compost is a mixture of ingredients used as plant fertilizer and to improve soil's physical, chemical and biological properties. It is commonly prepared by decomposing plant, food waste, recycling organic materials and manure. The resulting m ...
, the purposeful
biodegradation Biodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi. It is generally assumed to be a natural process, which differentiates it from composting. Composting is a human-driven process in which biodegrada ...
of organic matter by
microorganism A microorganism, or microbe,, ''mikros'', "small") and ''organism'' from the el, ὀργανισμός, ''organismós'', "organism"). It is usually written as a single word but is sometimes hyphenated (''micro-organism''), especially in olde ...
s, is among the most simple ways of treating food waste and thereby preventing it being sent to landfill. Since all biodegradable materials will eventually
oxidise Redox (reduction–oxidation, , ) is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a d ...
to become compost, the process can be undertaken at home with no running costs, although equipment can accelerate the process. Most components of food waste are putrescibles and will be broken down in a compost, however some exceptions will not (e.g. cooked foods and feces) and can attract
vermin Vermin ( colloquially varmint(s) or varmit(s)) are pests or nuisance animals that spread diseases or destroy crops or livestock. Since the term is defined in relation to human activities, which species are included vary by region and enterp ...
. The effectiveness of composting food waste depends on the available space (or storage capacity in the case of a compost bin) and the method of composting. Unlike in landfill, where it is mixed with other (non-biodegradable) materials, food waste
decomposing Decomposition or rot is the process by which dead organic substances are broken down into simpler organic or inorganic matter such as carbon dioxide, water, simple sugars and mineral salts. The process is a part of the nutrient cycle and is e ...
in a compost does not release harmful gases. Similarly to compost created from other waste sources, composted food waste can be used to return nutrients to the soil if spread on the garden (see uses of compost).
Anaerobic digestion Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to Waste management, manage waste or to produce fuels. Mu ...
(AD), the breaking down of biodegradable material by microorganisms in the absence of oxygen, is recognised as an effective method of waste disposal, with the potential to address the food waste problem nationally. AD technology has a small environmental impact, producing less greenhouse gas emissions than composting.Hogg, p. 8. However, although the process is well established in the
water industry The water industry provides drinking water and wastewater services (including sewage treatment) to residential, commercial, and industrial sectors of the economy. Typically public utilities operate water supply networks. The water industry doe ...
, it is less so within the waste sector. Despite this, the AD industry is being (and planned to be further) expanded by local councils and retailers to deal with food waste; several local authorities in the UK are planning to build anaerobic digestion plants, with the largest, to be located in
Selby Selby is a market town and civil parish in the Selby District of North Yorkshire, England, south of York on the River Ouse, with a population at the 2011 census of 14,731. The town was historically part of the West Riding of Yorkshire until ...
, due to operate from 2010. Supermarket chains
Tesco Tesco plc () is a British multinational groceries and general merchandise retailer headquartered in Welwyn Garden City, England. In 2011 it was the third-largest retailer in the world measured by gross revenues and the ninth-largest in th ...
and
Sainsbury's J Sainsbury plc, trading as Sainsbury's, is the second largest chain of supermarkets in the United Kingdom, with a 14.6% share of UK supermarket sales. Founded in 1869 by John James Sainsbury with a shop in Drury Lane, London, the company ...
are both adopting AD technology to dispose of their waste, while Tesco's head of waste and recycling said: "As renewable energy technologies now become mainstream, there is no excuse for sending waste to landfill that could actually be put to positive use." AD technology remains an experimental field though, and there is potential for advancements to increase efficiency. In July 2014 Sainsbury's began powering one of its stores using anaerobic digestion.
Incinerating Incineration is a waste treatment process that involves the combustion of substances contained in waste materials. Industrial plants for waste incineration are commonly referred to as waste-to-energy facilities. Incineration and other high ...
waste has traditionally been viewed as a method with the main purpose being the destruction of the waste involved. Recovering the energy generated from this process has become of greater importance, and all incineration facilities in England now operate as energy-from-waste plants (with many operating as combined heat and power facilities). Critics question the safety of the pollutants emitted during the process and argue that, as incinerators require constant levels of waste to operate, it encourages more waste. However, the levels of emissions from the incinerating process has been greatly reduced by developments in technology and legislation.


See also

*
FareShare FareShare is a charity network aimed at relieving food poverty and reducing food waste in the UK, which has been running since 1994. It does this by obtaining good quality surplus food from the food industry that would otherwise have gone to wast ...
* The Real Junk Food Project * Food waste in New Zealand *
Waste treatment Waste treatment refers to the activities required to ensure that waste has the least practicable impact on the environment. In many countries various forms of waste treatment are required by law. Solid waste treatment The treatment of solid wastes ...


Notes

  1. A figure of 18% for Wales is assumed by the authors; the composition of municipal waste indicates a lower figure for municipal waste (15.7%) but this included a significant proportion of non-household waste.
  2. The
    Scottish Environment Protection Agency The Scottish Environment Protection Agency (SEPA; gd, Buidheann Dìon Àrainneachd na h-Alba) is Scotland's environmental regulator and national flood forecasting, flood warning and strategic flood risk management authority.Food Standards Agency , type = Non-ministerial government department , nativename = , nativename_a = , nativename_r = , logo = Food Standards Agency.svg , logo_width = , logo_caption = , seal = , seal_width = , seal_caption = , picture = , picture_width = ...
    , 'the date up to and including which food may be used safely (cooked, processed or consumed) if it has been stored correctly'. 'Best before' by comparison is the date after which the food's quality may begin to deteriorate, although in most cases (discounting eggs) it remains edible.
  3. Since food waste is so rarely separated from municipal waste (only 2% was collected separately for either composting or anaerobic digestion) and comprises a significant proportion of it (around 20%), it can be assumed that the disposal of food waste follows the same trends as that of municipal waste, hence the use of Defra's municipal waste statistics.
  4. A putrescible is commonl
    defined
    as 'a substance which is liable to undergo decomposition when in contact with air and moisture at ordinary temperatures'. Animal, fruit, and vegetable debris, and cooked food are included under this definition.


References

;Bibliography * * *


Further reading

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External links


Love Food, Hate Waste

Love Food Hate Waste - Scotland

Waste Aware Scotland

This is Rubbish

Tristram Stuart Waste

Waste & Resources Action Programme

Thriving trade in out-of-date best-before foods
- BBC Magazine article on the selling of out-of-date best-before foods {{DEFAULTSORT:Food Waste In The United Kingdom Environmental issues in the United Kingdom Waste in the United Kingdom Food and drink in the United Kingdom