Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp

In this paper, the effect of D0 temperature, Kappa factor and the final pH value on bleaching sulfate bleached pine wood pulp was studied. The results showed that the bleaching efficiency was better when the pH value was 4, and the amount of absorbable organic halogen (AOX) in the bleaching wastewat...

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Autores principales:	Lijie Huang, Zhehao Wei, Yanan Wang, Xiaoxue Han, Haobin Chen, Chongxing Huang, Yingnan Wei
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/d89e15fd369f45fea541f94b14d6436e
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spelling	oai:doaj.org-article:d89e15fd369f45fea541f94b14d6436e2021-12-01T18:52:06ZEffect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp2158-322610.1063/5.0064470https://doaj.org/article/d89e15fd369f45fea541f94b14d6436e2021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0064470https://doaj.org/toc/2158-3226In this paper, the effect of D0 temperature, Kappa factor and the final pH value on bleaching sulfate bleached pine wood pulp was studied. The results showed that the bleaching efficiency was better when the pH value was 4, and the amount of absorbable organic halogen (AOX) in the bleaching wastewater was decreased. The Kappa factor is linear with the whiteness in the range of 0–0.15. With the increase of the Kappa factor, the amount of AOX in bleaching wastewater of D0 and Ep gradually increases. High temperature bleaching can reduce AOX production, but some fibers are hydrolyzed, leading to a decrease in pulp viscosity. The effects of chlorine dioxide solution adding sodium dihydrogen phosphate (NaH2PO4) and dimethylsulfoxide (DMSO) on pulp bleaching were investigated. The results showed that both solutions could reduce the amount of AOX in bleaching wastewater. Among them, the addition of NaH2PO4 in chlorine dioxide increased pulp whiteness, while the addition of DMSO was the opposite. Scanning electron microscope showed that a small amount of hollow cracks and more voids appeared on the surface of pulp fibers after the addition of NaH2PO4. Pulp fibers bleached by the chlorine dioxide adding DMSO have more folds and less voids on the surface. The surface wrinkles of pulp fibers increased with the addition of DMSO and the voids were less. FT-IR showed that the number of chromophore groups in the pulp bleached by chlorine dioxide adding NaH2PO4 were decreased. However, the lignin characteristic absorption peak in the pulp bleached by chlorine dioxide adding DMSO increased at the intensity of 1062 and 1160 cm−1, which indicated that there were more residual chromophore groups.Lijie HuangZhehao WeiYanan WangXiaoxue HanHaobin ChenChongxing HuangYingnan WeiAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115224-115224-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Lijie Huang Zhehao Wei Yanan Wang Xiaoxue Han Haobin Chen Chongxing Huang Yingnan Wei Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
description	In this paper, the effect of D0 temperature, Kappa factor and the final pH value on bleaching sulfate bleached pine wood pulp was studied. The results showed that the bleaching efficiency was better when the pH value was 4, and the amount of absorbable organic halogen (AOX) in the bleaching wastewater was decreased. The Kappa factor is linear with the whiteness in the range of 0–0.15. With the increase of the Kappa factor, the amount of AOX in bleaching wastewater of D0 and Ep gradually increases. High temperature bleaching can reduce AOX production, but some fibers are hydrolyzed, leading to a decrease in pulp viscosity. The effects of chlorine dioxide solution adding sodium dihydrogen phosphate (NaH2PO4) and dimethylsulfoxide (DMSO) on pulp bleaching were investigated. The results showed that both solutions could reduce the amount of AOX in bleaching wastewater. Among them, the addition of NaH2PO4 in chlorine dioxide increased pulp whiteness, while the addition of DMSO was the opposite. Scanning electron microscope showed that a small amount of hollow cracks and more voids appeared on the surface of pulp fibers after the addition of NaH2PO4. Pulp fibers bleached by the chlorine dioxide adding DMSO have more folds and less voids on the surface. The surface wrinkles of pulp fibers increased with the addition of DMSO and the voids were less. FT-IR showed that the number of chromophore groups in the pulp bleached by chlorine dioxide adding NaH2PO4 were decreased. However, the lignin characteristic absorption peak in the pulp bleached by chlorine dioxide adding DMSO increased at the intensity of 1062 and 1160 cm−1, which indicated that there were more residual chromophore groups.
format	article
author	Lijie Huang Zhehao Wei Yanan Wang Xiaoxue Han Haobin Chen Chongxing Huang Yingnan Wei
author_facet	Lijie Huang Zhehao Wei Yanan Wang Xiaoxue Han Haobin Chen Chongxing Huang Yingnan Wei
author_sort	Lijie Huang
title	Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
title_short	Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
title_full	Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
title_fullStr	Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
title_full_unstemmed	Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
title_sort	effect of chlorine dioxide with nah2po4 and dmso on bleaching of kraft pine pulp
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/d89e15fd369f45fea541f94b14d6436e
work_keys_str_mv	AT lijiehuang effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp AT zhehaowei effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp AT yananwang effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp AT xiaoxuehan effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp AT haobinchen effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp AT chongxinghuang effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp AT yingnanwei effectofchlorinedioxidewithnah2po4anddmsoonbleachingofkraftpinepulp
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Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp

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