Food waste collection and recycling for value-added products: potential applications and challenges in Hong Kong

Environmental Science and Pollution Research International
Irene M C Lo, Kok Sin Woon

Abstract

About 3600 tonnes food waste are discarded in the landfills in Hong Kong daily. It is expected that the three strategic landfills in Hong Kong will be exhausted by 2020. In consideration of the food waste management environment and community needs in Hong Kong, as well as with reference to the food waste management systems in cities such as Linköping in Sweden and Oslo in Norway, a framework of food waste separation, collection, and recycling for food waste valorization is proposed in this paper. Food waste can be packed in an optic bag (i.e., a bag in green color), while the residual municipal solid waste (MSW) can be packed in a common plastic bag. All the wastes are then sent to the refuse transfer stations, in which food waste is separated from the residual MSW using an optic sensor. On the one hand, the sorted food waste can be converted into valuable materials (e.g., compost, swine feed, fish feed). On the other hand, the sorted food waste can be sent to the proposed Organic Waste Treatment Facilities and sewage treatment works for producing biogas. The biogas can be recovered to produce electricity and city gas (i.e., heating fuel for cooking purpose). Due to the challenges faced by the value-added products in Hong Kong,...Continue Reading

References

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Mar 4, 2014·Environmental Science and Pollution Research International·Josef Maroušek

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Citations

Feb 15, 2019·Environmental Science and Pollution Research International·Xiaopeng Guo, Xiaoyu Yang
Mar 25, 2019·Environmental Science and Pollution Research International·Iván Moreno-AndradeGuillermo Quijano
Jul 22, 2019·Environmental Science and Pollution Research International·Rizwan RasheedYuehong Su
May 1, 2021·Environmental Science and Pollution Research International·Zhang ChengZhanbiao Yang
Jun 22, 2021·Journal of Environmental Health Science & Engineering·Mohammad AminzadehHassan Aminirad

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