文献类型：期刊文献

英文题名：Holistic utilization of waste plastics through a tandem process

作者：Dai, Leilei[1];Karakas, Ozlem[1];Lata, Suman[1];Cobb, Kirk[1];Lei, Hanwu[2];He, Chao[3];Cheng, Yanling[1,4];Chen, Paul[1];Ruan, Roger[1]

第一作者：Dai, Leilei

通讯作者：Ruan, RG[1]

机构：[1]Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55112 USA;[2]Washington State Univ, Dept Biol Syst Engn, Richland, WA 99354 USA;[3]Tampere Univ, Fac Engn & Nat Sci, Mat Sci & Environm Engn, Tampere, Finland;[4]Beijing Union Univ, Biochem Engn Coll, 18, Fatouxili 3 Area, Beijing 100023, Peoples R China

第一机构：Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55112 USA

通讯机构：[1]corresponding author), Univ Minnesota, Ctr Biorefining, 1390 Eckles Ave, St Paul, MN 55112 USA.

年份：2023

卷号：11

期号：5

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：;EI(收录号：20233214497052);Scopus(收录号：2-s2.0-85166616441);WOS:【SCI-EXPANDED(收录号:WOS:001049427800001)】；

基金：We acknowledge the financial support from Resynergi, the University of Minnesota MnDrive Environment Program MNE12, and the University of Minnesota Center for Biorefining.

语种：英文

外文关键词：Waste plastics; Carbon nanomaterials; Pyrolysis; Chemical vapor deposition

摘要：In this study, a tandem process that combines catalytic pyrolysis with catalytic chemical vapor deposition (CVD) was performed to investigate the conversion of waste plastics to carbon nanomaterials, oil, and for hydrogen production. This study primarily explored the effects of plastic types and the plastic feeding rate on the pyrolysis products and the quality and morphology of carbon nanomaterials. High-density polyethylene (HDPE), lowdensity polyethylene (LDPE), polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET) were used as carbon precursors for the growth of carbon nanomaterials on nickel foams. Results showed that PS produced the highest liquid oil with just 2 % of predominantly amorphous structured carbon nanomaterials. PET had the lowest hydrogen yield and approximately 42 % amorphous carbon due to the formation of more CO2 and CO. Most importantly, since HDPE, LDPE, and PP produced more graphitic carbon nanomaterial with fewer structural defects compared to PET and PS, they are more favorable for the production of hydrogen and carbon nanomaterials. Additionally, HDPE loading significantly affected the quality of the produced carbon nanomaterial, particularly higher or lower feedstock loading resulting in more defects. This proposed tandem process shows great potential for upcycling waste plastics for secondary use.