A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor

The presence of lignin hampers the utilization of hemicelluloses in the pre-hydrolysis liquor (PHL) from the kraft-based dissolving pulp production process. In this paper, a novel process for removing lignin from PHL was proposed by effectively recycling catalysts of BiOCl/BiOBr. During the whole pr...

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Autores principales:	Shengyu Zhang, Jiachuan Chen, Qianqian Jia, Qimeng Jiang, Jiaqiang Yan, Guihua Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pre-hydrolysis liquor BiOCl/BiOBr lignin photocatalysis Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/3de24d3ff00d4eeea5680c72f1def695
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spelling	oai:doaj.org-article:3de24d3ff00d4eeea5680c72f1def6952021-11-25T18:30:11ZA Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor10.3390/nano111128362079-4991https://doaj.org/article/3de24d3ff00d4eeea5680c72f1def6952021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2836https://doaj.org/toc/2079-4991The presence of lignin hampers the utilization of hemicelluloses in the pre-hydrolysis liquor (PHL) from the kraft-based dissolving pulp production process. In this paper, a novel process for removing lignin from PHL was proposed by effectively recycling catalysts of BiOCl/BiOBr. During the whole process, BiOCl and BiOBr were not only adsorbents for removing lignin, but also photocatalysts for degrading lignin. The results showed that BiOCl and BiOBr treatments caused 36.3% and 33.9% lignin removal, respectively, at the optimized conditions, and the losses of hemicellulose-derived saccharides (HDS) were both 0.1%. The catalysts could be regenerated by simple photocatalytic treatment and obtain considerable CO and CO<sub>2</sub>. After 15 h of illumination, 49.9 μmol CO and 553.0 μmol CO<sub>2</sub> were produced by BiOCl, and 38.7 μmol CO and 484.3 μmol CO<sub>2</sub> were produced by BiOBr. Therefore, both BiOCl and BiOBr exhibit excellent adsorption and photocatalytic properties for lignin removal from pre-hydrolysis.Shengyu ZhangJiachuan ChenQianqian JiaQimeng JiangJiaqiang YanGuihua YangMDPI AGarticlepre-hydrolysis liquorBiOCl/BiOBrligninphotocatalysisChemistryQD1-999ENNanomaterials, Vol 11, Iss 2836, p 2836 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pre-hydrolysis liquor BiOCl/BiOBr lignin photocatalysis Chemistry QD1-999
spellingShingle	pre-hydrolysis liquor BiOCl/BiOBr lignin photocatalysis Chemistry QD1-999 Shengyu Zhang Jiachuan Chen Qianqian Jia Qimeng Jiang Jiaqiang Yan Guihua Yang A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor
description	The presence of lignin hampers the utilization of hemicelluloses in the pre-hydrolysis liquor (PHL) from the kraft-based dissolving pulp production process. In this paper, a novel process for removing lignin from PHL was proposed by effectively recycling catalysts of BiOCl/BiOBr. During the whole process, BiOCl and BiOBr were not only adsorbents for removing lignin, but also photocatalysts for degrading lignin. The results showed that BiOCl and BiOBr treatments caused 36.3% and 33.9% lignin removal, respectively, at the optimized conditions, and the losses of hemicellulose-derived saccharides (HDS) were both 0.1%. The catalysts could be regenerated by simple photocatalytic treatment and obtain considerable CO and CO<sub>2</sub>. After 15 h of illumination, 49.9 μmol CO and 553.0 μmol CO<sub>2</sub> were produced by BiOCl, and 38.7 μmol CO and 484.3 μmol CO<sub>2</sub> were produced by BiOBr. Therefore, both BiOCl and BiOBr exhibit excellent adsorption and photocatalytic properties for lignin removal from pre-hydrolysis.
format	article
author	Shengyu Zhang Jiachuan Chen Qianqian Jia Qimeng Jiang Jiaqiang Yan Guihua Yang
author_facet	Shengyu Zhang Jiachuan Chen Qianqian Jia Qimeng Jiang Jiaqiang Yan Guihua Yang
author_sort	Shengyu Zhang
title	A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor
title_short	A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor
title_full	A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor
title_fullStr	A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor
title_full_unstemmed	A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor
title_sort	novel and effective recyclable biocl/biobr photocatalysis for lignin removal from pre-hydrolysis liquor
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3de24d3ff00d4eeea5680c72f1def695
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A Novel and Effective Recyclable BiOCl/BiOBr Photocatalysis for Lignin Removal from Pre-Hydrolysis Liquor

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