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Food recovered by food waste critic Robin Greenfield in Madison, Wisconsin, from two days of recovery from dumpsters [1]. 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.
Different types of waste input (such as plant waste, food waste, tyres) placed in the pyrolysis process potentially yield an alternative to fossil fuels. [53] Pyrolysis is a process of thermo-chemical decomposition of organic materials by heat in the absence of stoichiometric quantities of oxygen ; the decomposition produces various hydrocarbon ...
Biodegradation is the naturally-occurring breakdown of materials by microorganisms such as bacteria and fungi or other biological activity. [ 35] Composting is a human-driven process in which biodegradation occurs under a specific set of circumstances. [ 36] The predominant difference between the two is that one process is naturally-occurring ...
Food preservation. A food scientist is preparing a meal for astronauts in space. Food preservation includes processes that make food more resistant to microorganism growth and slow the oxidation of fats. This slows down the decomposition and rancidification process. Food preservation may also include processes that inhibit visual deterioration ...
The Food and Agriculture Organization of the United Nations[ note 1] ( FAO) is a specialized agency of the United Nations that leads international efforts to defeat hunger and improve nutrition and food security. Its Latin motto, fiat panis, translates to "let there be bread".
Resource recovery. Resource recovery is using wastes as an input material to create valuable products as new outputs. The aim is to reduce the amount of waste generated, thereby reducing the need for landfill space, and optimising the values created from waste. [ 1] Resource recovery delays the need to use raw materials in the manufacturing ...
Plastic recycling is the processing of plastic waste into other products. [ 1 ][ 2 ][ 3 ] Recycling can reduce dependence on landfill, conserve resources and protect the environment from plastic pollution and greenhouse gas emissions. [ 4 ][ 5 ] Recycling rates lag behind those of other recoverable materials, such as aluminium, glass and paper.
The global blue water footprint of food waste is 250 km 3, the amount of water that flows annually through the Volga or three times Lake Geneva. [197] There are several factors that explain how food waste has increased globally in food systems. The main factor is population, because as population increases more food is being made, but most food ...