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Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes

Spent polyethylene terephthalate (PETE) bottles were collected and co-pyrolyzed with rice straw (RS) to examine the characteristics and performance of biochar as a sorbent for various types of U.S. EPA priority pollutants, including 2,4-dinitrotoluene (DNT), 2,4-dichlorophenol (DCP), Pb, chromate (C...

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Autores principales: Oh, Seok-Young, Seo, Tae-Cheol
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9071198/
https://www.ncbi.nlm.nih.gov/pubmed/35530497
http://dx.doi.org/10.1039/c9ra05518e
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author Oh, Seok-Young
Seo, Tae-Cheol
author_facet Oh, Seok-Young
Seo, Tae-Cheol
author_sort Oh, Seok-Young
collection PubMed
description Spent polyethylene terephthalate (PETE) bottles were collected and co-pyrolyzed with rice straw (RS) to examine the characteristics and performance of biochar as a sorbent for various types of U.S. EPA priority pollutants, including 2,4-dinitrotoluene (DNT), 2,4-dichlorophenol (DCP), Pb, chromate (CrO(4)(2−)), and selenate (SeO(4)(2−)). During sorption of contaminants to PETE/RS-derived biochar, PETE residues from pyrolysis, pH, and pyrolysis temperature greatly affected the sorption process. Depending on the types of contaminants and experimental conditions, co-pyrolysis of PETE and RS may enhance the sorption of contaminants through different sorption mechanisms, including hydrophobicity, electrostatic force, ion exchange, surface complexation, and surface precipitation. Unlike other contaminants, selenate was reductively transformed by delocalized electrons from the graphitic structure in biochar. Our results strongly suggest that co-pyrolysis of PETE and agricultural wastes may be favorable to enhance the properties of biochar. In addition to syn-gas and bio-oil from co-pyrolysis, biochar may be a valuable by-product for commercial use.
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spelling pubmed-90711982022-05-06 Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes Oh, Seok-Young Seo, Tae-Cheol RSC Adv Chemistry Spent polyethylene terephthalate (PETE) bottles were collected and co-pyrolyzed with rice straw (RS) to examine the characteristics and performance of biochar as a sorbent for various types of U.S. EPA priority pollutants, including 2,4-dinitrotoluene (DNT), 2,4-dichlorophenol (DCP), Pb, chromate (CrO(4)(2−)), and selenate (SeO(4)(2−)). During sorption of contaminants to PETE/RS-derived biochar, PETE residues from pyrolysis, pH, and pyrolysis temperature greatly affected the sorption process. Depending on the types of contaminants and experimental conditions, co-pyrolysis of PETE and RS may enhance the sorption of contaminants through different sorption mechanisms, including hydrophobicity, electrostatic force, ion exchange, surface complexation, and surface precipitation. Unlike other contaminants, selenate was reductively transformed by delocalized electrons from the graphitic structure in biochar. Our results strongly suggest that co-pyrolysis of PETE and agricultural wastes may be favorable to enhance the properties of biochar. In addition to syn-gas and bio-oil from co-pyrolysis, biochar may be a valuable by-product for commercial use. The Royal Society of Chemistry 2019-09-09 /pmc/articles/PMC9071198/ /pubmed/35530497 http://dx.doi.org/10.1039/c9ra05518e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Oh, Seok-Young
Seo, Tae-Cheol
Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
title Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
title_full Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
title_fullStr Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
title_full_unstemmed Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
title_short Upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
title_sort upgrading biochar via co-pyrolyzation of agricultural biomass and polyethylene terephthalate wastes
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9071198/
https://www.ncbi.nlm.nih.gov/pubmed/35530497
http://dx.doi.org/10.1039/c9ra05518e
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