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Characterization of humic acids from original coal and its oxidization production

Five coal samples obtained from Chinese coal-producing areas were oxidized by hydrogen peroxide (H(2)O(2)), and humic acids (HAs) were derived from original coal and its oxidizition samples. HAs were characterized by physical and chemical methods, between which was also comparison. Yield, ash, aroma...

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Autores principales: Yan, Shuangdui, Zhang, Naiyu, Li, Juan, Wang, Yanan, Liu, Yue, Cao, Mengyao, Yan, Qiuyan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8319158/
https://www.ncbi.nlm.nih.gov/pubmed/34321585
http://dx.doi.org/10.1038/s41598-021-94949-0
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author Yan, Shuangdui
Zhang, Naiyu
Li, Juan
Wang, Yanan
Liu, Yue
Cao, Mengyao
Yan, Qiuyan
author_facet Yan, Shuangdui
Zhang, Naiyu
Li, Juan
Wang, Yanan
Liu, Yue
Cao, Mengyao
Yan, Qiuyan
author_sort Yan, Shuangdui
collection PubMed
description Five coal samples obtained from Chinese coal-producing areas were oxidized by hydrogen peroxide (H(2)O(2)), and humic acids (HAs) were derived from original coal and its oxidizition samples. HAs were characterized by physical and chemical methods, between which was also comparison. Yield, ash, aromaticity, molecular weight and functional group of HAs showed variance between original coals. While, yield, molecular weight, and the quantity of oxygen-containing groups of HAs increased more from coals oxidized with H(2)O(2). However, the increase of oxygen-containing functional groups depended on original coals. For Yimin lignite, the oxidation of H(2)O(2) could obviously improve the carboxyl group content of HAs, thus promoting the adsorption of nitrogen. This study demonstrated that oxidation of coal by using H(2)O(2) was one pretreatment way to obtain and modify HAs which could be used as prerequisite and functional material in agricultural field.
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spelling pubmed-83191582021-07-29 Characterization of humic acids from original coal and its oxidization production Yan, Shuangdui Zhang, Naiyu Li, Juan Wang, Yanan Liu, Yue Cao, Mengyao Yan, Qiuyan Sci Rep Article Five coal samples obtained from Chinese coal-producing areas were oxidized by hydrogen peroxide (H(2)O(2)), and humic acids (HAs) were derived from original coal and its oxidizition samples. HAs were characterized by physical and chemical methods, between which was also comparison. Yield, ash, aromaticity, molecular weight and functional group of HAs showed variance between original coals. While, yield, molecular weight, and the quantity of oxygen-containing groups of HAs increased more from coals oxidized with H(2)O(2). However, the increase of oxygen-containing functional groups depended on original coals. For Yimin lignite, the oxidation of H(2)O(2) could obviously improve the carboxyl group content of HAs, thus promoting the adsorption of nitrogen. This study demonstrated that oxidation of coal by using H(2)O(2) was one pretreatment way to obtain and modify HAs which could be used as prerequisite and functional material in agricultural field. Nature Publishing Group UK 2021-07-28 /pmc/articles/PMC8319158/ /pubmed/34321585 http://dx.doi.org/10.1038/s41598-021-94949-0 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Yan, Shuangdui
Zhang, Naiyu
Li, Juan
Wang, Yanan
Liu, Yue
Cao, Mengyao
Yan, Qiuyan
Characterization of humic acids from original coal and its oxidization production
title Characterization of humic acids from original coal and its oxidization production
title_full Characterization of humic acids from original coal and its oxidization production
title_fullStr Characterization of humic acids from original coal and its oxidization production
title_full_unstemmed Characterization of humic acids from original coal and its oxidization production
title_short Characterization of humic acids from original coal and its oxidization production
title_sort characterization of humic acids from original coal and its oxidization production
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8319158/
https://www.ncbi.nlm.nih.gov/pubmed/34321585
http://dx.doi.org/10.1038/s41598-021-94949-0
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