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High-value utilization of mask and heavy fraction of bio-oil: From hazardous waste to biochar, bio-oil, and graphene films.
Luo, Zejun; Zhu, Xiefei; Deng, Jingjing; Gong, Ke; Zhu, Xifeng.
  • Luo Z; School of Engineering Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
  • Zhu X; School of Engineering Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
  • Deng J; School of Engineering Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
  • Gong K; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
  • Zhu X; School of Engineering Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China. Electronic address: xfzhu@ustc.edu.cn.
J Hazard Mater ; 420: 126570, 2021 10 15.
Article in English | MEDLINE | ID: covidwho-1293967
ABSTRACT
At present, it is very common to wear mask outdoors in order to avoid coronavirus disease 19 (COVID-19) infection. However, this leads to the formation of numerous plastic wastes that threaten humans and ecosystem. Against this major background, a novel co-pyrolysis coupled chemical vapor deposition (CVD) strategy is proposed to systematically convert mask and heavy fraction of bio-oil (HB) into biochar, bio-oil, and three-dimensional graphene films (3DGFs) is proposed. The biochar exhibits high higher heating value (HHV) (33.22-33.75 MJ/kg) and low ash content (2.34%), which is obviously superior to that of the walnut shell and anthracite coal. The bio-oil contains rich aromatic components, such as 1,2-dimethylbenzene and 2-methylnaphthalene, which can be used as chemical feedstock for insecticides. Furthermore, the 3DGF800 has a wide range of applications in the fields of oil spill cleanup and oil/water separation according to its fire resistance, high absorbability (40-89 g g-1) and long-term cycling stability. This research sheds new light on converting plastic wastes and industrial by-products into high added-value chemicals.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: COVID-19 / Graphite Limits: Humans Language: English Journal: J Hazard Mater Journal subject: Environmental Health Year: 2021 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: COVID-19 / Graphite Limits: Humans Language: English Journal: J Hazard Mater Journal subject: Environmental Health Year: 2021 Document Type: Article