气候变化领域集成服务门户(CCPortal): Thermodynamic feasibility of shipboard conversion of marine plastics to blue diesel for self-powered ocean cleanup

CCPortal

DOI	10.1073/pnas.2107250118
	Thermodynamic feasibility of shipboard conversion of marine plastics to blue diesel for self-powered ocean cleanup
	Belden E.R.; Kazantzis N.K.; Reddy C.M.; Kite-Powell H.; Timko M.T.; Italiani E.; Herschbach D.R.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:46
英文摘要	Collecting and removing ocean plastics can mitigate their environmental impacts; however, ocean cleanup will be a complex and energy-intensive operation that has not been fully evaluated. This work examines the thermodynamic feasibility and subsequent implications of hydrothermally converting this waste into a fuel to enable self-powered cleanup. A comprehensive probabilistic exergy analysis demonstrates that hydrothermal liquefaction has potential to generate sufficient energy to power both the process and the ship performing the cleanup. Self-powered cleanup reduces the number of roundtrips to port of a waste-laden ship, eliminating the need for fossil fuel use for most plastic concentrations. Several cleanup scenarios are modeled for the Great Pacific Garbage Patch (GPGP), corresponding to 230 t to 11,500 t of plastic removed yearly; the range corresponds to uncertainty in the surface concentration of plastics in the GPGP. Estimated cleanup times depends mainly on the number of booms that can be deployed in the GPGP without sacrificing collection efficiency. Self-powered cleanup may be a viable approach for removal of plastics from the ocean, and gaps in our understanding of GPGP characteristics should be addressed to reduce uncertainty. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Exergy analysis; Hydrothermal liquefaction; Monte Carlo simulation; Ocean plastic
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238598
作者单位	Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA 01069, United States; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Marine Policy Center, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, United States
推荐引用方式 GB/T 7714	Belden E.R.,Kazantzis N.K.,Reddy C.M.,et al. Thermodynamic feasibility of shipboard conversion of marine plastics to blue diesel for self-powered ocean cleanup[J],2021,118(46).
APA	Belden E.R..,Kazantzis N.K..,Reddy C.M..,Kite-Powell H..,Timko M.T..,...&Herschbach D.R..(2021).Thermodynamic feasibility of shipboard conversion of marine plastics to blue diesel for self-powered ocean cleanup.Proceedings of the National Academy of Sciences of the United States of America,118(46).
MLA	Belden E.R.,et al."Thermodynamic feasibility of shipboard conversion of marine plastics to blue diesel for self-powered ocean cleanup".Proceedings of the National Academy of Sciences of the United States of America 118.46(2021).