Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment

The authors reported a potential candidate methylated mud snail protein (MeMsp) as an effective and eco-friendly flocculant to treat the high turbidity wastewater. MeMsp was obtained by extraction of mud snail protein (Msp) through isoelectric precipitation (PSC-IP) and then methylated via the ester...

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Autores principales:	Shaohui Mao, Xiaohui Xu, Linjiang Zhang, Bo Bai, Na Hu, Honglun Wang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bio-flocculant high turbidity wastewater kaolin methylation mud snail protein Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/ea933ce6934c40a7bc349f928862358d
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spelling	oai:doaj.org-article:ea933ce6934c40a7bc349f928862358d2021-11-06T11:16:45ZMethylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment0273-12231996-973210.2166/wst.2021.262https://doaj.org/article/ea933ce6934c40a7bc349f928862358d2021-08-01T00:00:00Zhttp://wst.iwaponline.com/content/84/3/737https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The authors reported a potential candidate methylated mud snail protein (MeMsp) as an effective and eco-friendly flocculant to treat the high turbidity wastewater. MeMsp was obtained by extraction of mud snail protein (Msp) through isoelectric precipitation (PSC-IP) and then methylated via the esterification with side-chain carboxyl. Structural characterization of FT-IR, zeta potential and elemental analysis were carried out and further confirmed the successful of the methylation. Flocculation experiments with kaolin suspension simulated wastewater indicated that MeMsp-24 displayed more excellent flocculation efficiency at a low dosage. At the optimum dosage 27 mg/L, the maximum clarification efficiency of MeMsp-24 was 97.46% under pH 7.0. Furthermore, MeMsp-24 exhibited a wide flocculation window in the pH range 1.0–9.0, and faster sedimentation velocity and larger flocs size. In addition, MeMsp-24 exhibited 92.12% clarification efficiency in treating railway tunnel construction effluent. The flocculation kinetic and mechanism analysis revealed that the most effective particle collision occurred at the optimal dosage, with charge neutralization and adhesion playing irreplaceable roles in different environments, respectively. Therefore, through extraction and methylation modification, MeMsp could be a promising eco-friendly flocculant for high turbidity wastewater treatment. HIGHLIGHTS Synthesized a novel bio-flocculant methylated mud snail protein.; The protein-rich mud snail is fully utilized.; Methylation successfully improved the flocculation performance of mud snail protein.; Methylated mud snail protein achieved a significant turbidity removal for high turbidity wastewater treatment.; Methylated mud snail protein is completely environmentally friendly.;Shaohui MaoXiaohui XuLinjiang ZhangBo BaiNa HuHonglun WangIWA Publishingarticlebio-flocculanthigh turbidity wastewaterkaolinmethylationmud snail proteinEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 3, Pp 737-751 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bio-flocculant high turbidity wastewater kaolin methylation mud snail protein Environmental technology. Sanitary engineering TD1-1066
spellingShingle	bio-flocculant high turbidity wastewater kaolin methylation mud snail protein Environmental technology. Sanitary engineering TD1-1066 Shaohui Mao Xiaohui Xu Linjiang Zhang Bo Bai Na Hu Honglun Wang Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
description	The authors reported a potential candidate methylated mud snail protein (MeMsp) as an effective and eco-friendly flocculant to treat the high turbidity wastewater. MeMsp was obtained by extraction of mud snail protein (Msp) through isoelectric precipitation (PSC-IP) and then methylated via the esterification with side-chain carboxyl. Structural characterization of FT-IR, zeta potential and elemental analysis were carried out and further confirmed the successful of the methylation. Flocculation experiments with kaolin suspension simulated wastewater indicated that MeMsp-24 displayed more excellent flocculation efficiency at a low dosage. At the optimum dosage 27 mg/L, the maximum clarification efficiency of MeMsp-24 was 97.46% under pH 7.0. Furthermore, MeMsp-24 exhibited a wide flocculation window in the pH range 1.0–9.0, and faster sedimentation velocity and larger flocs size. In addition, MeMsp-24 exhibited 92.12% clarification efficiency in treating railway tunnel construction effluent. The flocculation kinetic and mechanism analysis revealed that the most effective particle collision occurred at the optimal dosage, with charge neutralization and adhesion playing irreplaceable roles in different environments, respectively. Therefore, through extraction and methylation modification, MeMsp could be a promising eco-friendly flocculant for high turbidity wastewater treatment. HIGHLIGHTS Synthesized a novel bio-flocculant methylated mud snail protein.; The protein-rich mud snail is fully utilized.; Methylation successfully improved the flocculation performance of mud snail protein.; Methylated mud snail protein achieved a significant turbidity removal for high turbidity wastewater treatment.; Methylated mud snail protein is completely environmentally friendly.;
format	article
author	Shaohui Mao Xiaohui Xu Linjiang Zhang Bo Bai Na Hu Honglun Wang
author_facet	Shaohui Mao Xiaohui Xu Linjiang Zhang Bo Bai Na Hu Honglun Wang
author_sort	Shaohui Mao
title	Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
title_short	Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
title_full	Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
title_fullStr	Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
title_full_unstemmed	Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
title_sort	methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ea933ce6934c40a7bc349f928862358d
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Methylated mud snail protein as a bio-flocculant for high turbidity wastewater treatment

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