Hong Kong Polytechnic University (PolyU) has agreed to collaborate with Hong Kong’s Correctional Services Department (CSD) to convert food waste into environmentally friendly materials for industrial production. As part of a Memorandum of Understanding (MoU), a new 3D printing material made from coffee grounds is to be used in prisons, among other things. The aim of the cooperation is to combine both ecological and social aspects by linking sustainable production with the professional rehabilitation of prisoners.
The Research Institute for Future Food at PolyU has developed a patented process that uses food waste, in particular coffee grounds, as the basis for additively manufactured products. This technology could help to reduce the problem of urban food waste and the associated greenhouse gas emissions. In the first phase of the project, the process will be implemented in industrial work programs within correctional facilities, where inmates will be trained in environmentally friendly product design and manufacturing.
Professor Christopher Chao, Vice President for Research and Innovation at PolyU, emphasized at the signing of the agreement that the university addresses social challenges and promotes sustainable development through innovative research. The collaboration with the Prison Service is an example of a mutually beneficial partnership that creates environmental as well as economic and social value.
The products made from coffee grounds are sold via the CSD Sports Association’s online sales platform “Made in Prison”. The proceeds, minus the production costs, are donated to local charities. As well as helping to protect the environment, this gives prisoners the opportunity to make a positive contribution to society and improve their career prospects after their time in prison.
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