文献类型： 会议论文

第一作者： Panagiotis Evangelopoulos

作者： Panagiotis Evangelopoulos ¹ ; Richard Sott ² ; Lena Smuk ¹ ;

作者机构： 1.RISE Research Institutes of Sweden,Division Built Environment-Systems Transition and Service Innovation,Resources from Waste,Drottning Kristinas vag 61,114 86,Stockholm,Sweden

2.RISE Research Institutes of Sweden,Division Materials and Production-Chemistry,Biomaterials and Textiles,Chemical and Biological safety,Brinellgatan 4,504 62 Boras,Sweden

关键词： Hydrothermal liquefaction;HTL;plastic recycling;feedstock recycling;thermochemical recycling;plastic waste;polymer degradationa

会议名称： International waste management and landfill symposium

主办单位：

页码： 1-8

摘要： Separating plastic packaging and food waste from retailers requires a lot of effort,is time consuming and thus costly.Every year in Sweden,more than 100 000 tonnes of expired food with the packaging from the supermarkets are discarded without passing through proper sorting(Westoo et al.,2018).The hydrothermal liquefaction(HTL)is a promising technology that can be applied for recycling of such heterogeneous waste fractions.This mild-temperature thermal treatment process can be used for treating food waste together with the plastic packaging without sorting,to convert all the organic fraction into lower molecular weight compounds,which could be used for other applications.Thermochemical processes are seen as the key for creating circular flows of polymers(Ragaert et al.,2017a).Chemical recycling decomposes organic matter into lower molecular weight compounds that can be used as raw materials in chemical and petrochemical industries,thus reducing the dependency on fossil resources.The products of from such processes are hydrocarbon-rich bio-oil that can be used for production of secondary raw materials and combustible gases that can supply the process with the energy needs.The Hydrothermal liquefaction(HTL)has been tested and used in several applications in the past with positive results(Gollakota et al.,2018).The main advantage of this process is that it can tolerate high moisture content of the feedstock,so no time-and energy-intensive drying of the feedstock prior to the process is needed(Dimitriadis and Bezergianni,2017).In the case of mixed food waste with plastic packaging,the moisture content of the waste fraction is expected to be high,which makes HTL an attractive option.Another advantage is the relative low temperature of the process,which results in lower energy consumption compared to other thermochemical processes.This study includes solvolysis experiments performed for polycarbonates(PC)and polyethylene terephthalate(PET).Additionally,food substitutes are being used for simulating a real waste fraction that food contamination of the plastic waste occurs.

分类号： x7