Local strategies for efficient management of solid household waste – the full-scale Augustenborg experiment

A system with property-close source-separation of thirteen different solid household waste fractions in a residential area in southern Sweden, including the implementation of new systems for source-separation of food waste, waste electric and electronic equipment, hazardous waste and fat, oils and grease was monitored over a 2-year period. Continuous weighing of disposed waste and repeated waste composting analyses were used to investigate recycling behaviour of households in the area and to monitor the composition of disposed waste. Results show that 34% of the total amount of generated waste was currently diverted to material recycling. The removal of recyclables from residual waste could be significantly increased, as more than 80% of all waste in the area (bulky waste excluded) was either covered by the Producer Responsibility Ordinances on packaging and newspaper or constitutes food waste suitable for biogas production. Food waste still represented almost 30% of all residual waste in the study area and was thus the fraction with the greatest potential (on weight basis) for increased source-separation.

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Key parameters for behaviour related to source separation of household organic waste: A case study in Hanoi, Vietnam

Waste Management & Research ◽

10.1177/0734242x16683441 ◽

2017 ◽

Vol 35 (3) ◽

pp. 246-252 ◽

Cited By ~ 6

Author(s):

Kosuke Kawai ◽

Luong Thi Mai Huong

Keyword(s):

Food Waste ◽

Organic Waste ◽

Discharge Rate ◽

Source Separation ◽

Participation Rate ◽

City Government ◽

Household Waste ◽

Local Officials ◽

Inorganic Waste

Proper management of food waste, a major component of municipal solid waste (MSW), is needed, especially in developing Asian countries where most MSW is disposed of in landfill sites without any pretreatment. Source separation can contribute to solving problems derived from the disposal of food waste. An organic waste source separation and collection programme has been operated in model areas in Hanoi, Vietnam, since 2007. This study proposed three key parameters (participation rate, proper separation rate and proper discharge rate) for behaviour related to source separation of household organic waste, and monitored the progress of the programme based on the physical composition of household waste sampled from 558 households in model programme areas of Hanoi. The results showed that 13.8% of 558 households separated organic waste, and 33.0% discharged mixed (unseparated) waste improperly. About 41.5% (by weight) of the waste collected as organic waste was contaminated by inorganic waste, and one-third of the waste disposed of as organic waste by separators was inorganic waste. We proposed six hypothetical future household behaviour scenarios to help local officials identify a final or midterm goal for the programme. We also suggested that the city government take further actions to increase the number of people participating in separating organic waste, improve the accuracy of separation and prevent non-separators from discharging mixed waste improperly.

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Effect of substrate pretreatment on biogas production through anaerobic digestion of food waste

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2017.06.178 ◽

2017 ◽

Vol 42 (42) ◽

pp. 26522-26528 ◽

Cited By ~ 57

Author(s):

B. Deepanraj ◽

V. Sivasubramanian ◽

S. Jayaraj

Keyword(s):

Anaerobic Digestion ◽

Food Waste ◽

Biogas Production ◽

Substrate Pretreatment

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Internet of Things (IoT)-Enabled Accountability in Source Separation of Household Waste for a Circular Economy in China

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.126773 ◽

2021 ◽

pp. 126773

Author(s):

Bill Wang ◽

Muhammad Farooque ◽

Ray Y. Zhong ◽

Abraham Zhang ◽

Yanping Liu

Keyword(s):

Internet Of Things ◽

Circular Economy ◽

Source Separation ◽

Household Waste

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Biogas potential of organic waste onboard cruise ships — a yet untapped energy source

Biomass Conversion and Biorefinery ◽

10.1007/s13399-020-01249-0 ◽

2021 ◽

Author(s):

Kai Schumüller ◽

Dirk Weichgrebe ◽

Stephan Köster

Keyword(s):

Energy Source ◽

Anaerobic Digestion ◽

Sewage Sludge ◽

Food Waste ◽

Energy Demand ◽

Organic Waste ◽

Biogas Production ◽

Biogas Yield ◽

Cruise Ships ◽

Detailed Presentation

AbstractTo tap the organic waste generated onboard cruise ships is a very promising approach to reduce their adverse impact on the maritime environment. Biogas produced by means of onboard anaerobic digestion offers a complementary energy source for ships’ operation. This report comprises a detailed presentation of the results gained from comprehensive investigations on the gas yield from onboard substrates such as food waste, sewage sludge and screening solids. Each person onboard generates a total average of about 9 kg of organic waste per day. The performed analyses of substrates and anaerobic digestion tests revealed an accumulated methane yield of around 159 L per person per day. The anaerobic co-digestion of sewage sludge and food waste (50:50 VS) emerged as particularly effective and led to an increased biogas yield by 24%, compared to the mono-fermentation. In the best case, onboard biogas production can provide an energetic output of 82 W/P, on average covering 3.3 to 4.1% of the total energy demand of a cruise ship.

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