This year, The Guild – the University of Liverpool’s students’ union (SU) – celebrates half a decade of composting food waste from its campus kitchens.Read more
Food Waste Recycling
What is food waste?
In general, food waste is the food intended for consumption that is discarded along the food supply chain and cannot be used. The particular causes of food waste are numerous and occur at the stages of producing, processing, retailing, and consuming.
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Reduce food waste
With growing urbanization around the world, changes in consumption patterns and food distribution systems present growing challenges for management of food waste.
Currently, one-third of food produced for human consumption is lost or wasted globally. This amount of food waste that is produced globally every year is more than enough to feed the nearly 1 billion hungry people in the world.
How to reduce food waste
- We should eat all shapes and sizes,
- Companies can use 'ugly' fruit and vegetables in their products
- We should use food waste to make other resources: An increasing amount of food waste is composted – so it’s put back into the soil, or is broken down and converted into gases, creating a source of renewable energy in anaerobic digestion facilities.
Food waste recycling
Different food waste recycling technologies are presently emerging or establishing themselves economically and environmentally as possible alternatives to the practice of landfilling food waste.
These food waste recycling technologies serve to the complete spectrum of food waste management opportunities, from small commercial businesses, up to large organizations.
The food process technologies can be broken down into the three main categories of biological digestion, non-biological volume/weight reduction, and thermal processing.
Anaerobic Digestion - Anaerobic digestion is the process by which organic matter such as animal or food waste is broken down to produce biogas and biofertiliser. This process happens in the absence of oxygen in a sealed, oxygen-free tank called ananaerobic digester.
Thermal Hydrolysis - A two-stage process involving high-pressure boiling of waste followed by rapid decompression. The waste sludge is then digested anaerobically by bacteria, producing high yields of biogas
Aerobic Digestion - Food waste is broken down aerobically (in the presence of oxygen) by natural organic bacteria.
Size reduction / volume reduction (Mechanical Processing) - Mechanical blades grind or shred the waste in the presence of water to create a pulp, which is then pressed to remove the majority of the water content.
- Waste to energy incineration - Combustion of MSW and capture of residual heat to generate electricity and heat.
- Pyrolysis - Pyrolysis is the thermo-chemical decomposition of organic material at elevated temperatures in the absence of oxygen.
- Gasification - The conversion of carbon-based materials (organic wastes and fossil fuel derived products) into CO, H2, and CO2.
Food waste management
Food waste management are the activities and actions that are required to manage food waste.
This includes the collection, transport, treatment and disposal of food waste, together with monitoring and regulation of the food waste management process.
Collection of food waste - Collection systems that ensure clean food waste is brought to treatment.
Treatment of food waste - Food waste treatment alternatives, from windrow composting to anaerobic digestion.
Food waste disposal - Food waste can be composted to produce soil and fertilizer, fed to animals, or used to produce energy or fuel.
Food waste solutions
Wasting food is not only an economical issue, but it also depletes natural resources and has a strong impact on the environment. With a little effort, everyone can play a role in reducing food waste.
Articles about Food Waste Recycling
Raymond Blanc’s Michelin-starred luxury hotel and restaurant Belmond Le Manoir aux Quat’ Saisons has invested in composting and food waste drying technology from Macclesfield-headquartered Tidy Planet, helping the site to compost 94% of its annual food waste.Read more
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Dundee and Angus College has invested in a second of Tidy Planet’s Rocket Composters for its Arbroath Campus, after successfully composting over 70 tonnes of food waste in the last three years at its Kingsway site.Read more
Karen Markey from Mitie’s Waste business discusses why we shouldn’t write-off the viable potential of food waste as a revenue stream by keeping it in the food chain.Read more
RUE DES PLANQUETTES – Sustainable development, pollution control and environmental protection are some of the major issues of the 21st century. Growth of the world population and world production induces a significant increase of waste. Waste management is becoming a real challenge for all companies, in all activity areas.
First, some science: Food entering landfills releases methane to the atmosphere, a greenhouse gas that has many more times the impact than the better known greenhouse gas CO2 (www.waste360.com/operations/how-banning-food-waste-landfills-affects-industry).Read more
Bentall Kennedy’s Launch Innovative Recycling Program To Keep One Million Pounds Of Food Waste Out Of landfills by 2020
TORONTO – Bentall Kennedy is breaking new ground and closing the loop on food waste through an innovative technology partnership with Hop Compost and Waste Solutions Canada that will divert almost 1,000,000 pounds of food waste from landfills by 2020. Starting in 2018, Bentall Kennedy will roll out the organics collection service to 18 of its properties in the Greater Toronto Area. This new technology converts food waste into soil to be re-purposed for landscaping at participating properties.Read more