Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3

Here adsorption studies were proposed on a carboxylated sludge biochar (CSB) material modified by HNO3 to assess its capacity in the removal of cobalt from aqueous solution. The as-prepared sludge biochar material was characterized by Brunauer-Emmett-Teller (BET) analysis, Fourier transform infrared...

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Autores principales:	Chunlian Hu, Wei Zhang, Yuantao Chen, Na Ye, DaWa YangJi, Haizhe Jia, Yanting Shen, Minna Song
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption adsorption mechanism cobalt csb isotherms kinetics Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/fcb3db2221af420d88a6fefd41c9f2e8
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spelling	oai:doaj.org-article:fcb3db2221af420d88a6fefd41c9f2e82021-11-06T11:12:03ZAdsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO30273-12231996-973210.2166/wst.2021.199https://doaj.org/article/fcb3db2221af420d88a6fefd41c9f2e82021-07-01T00:00:00Zhttp://wst.iwaponline.com/content/84/1/251https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Here adsorption studies were proposed on a carboxylated sludge biochar (CSB) material modified by HNO3 to assess its capacity in the removal of cobalt from aqueous solution. The as-prepared sludge biochar material was characterized by Brunauer-Emmett-Teller (BET) analysis, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), energy-dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The isotherm process could be well described by the Langmuir isotherm model. The adsorption kinetics indicated that cobalt adsorption followed a pseudo-second-order kinetics model. The mechanism between Co(II) and biochar involved electrostatic interaction, ion exchange, surface complexation and physical function. The adsorption capacity on CSB was as high as 72.27 mg·g−1, surpassing original sludge biochar (SB) as CSB had abundant oxygen-containing functional groups and many hydroxyls, plus the BET surface areas increased when SB was modified by HNO3, which stimulated adsorption effect. Therefore, this work shows that CSB could be used as an efficient adsorbent to remove Co(II) in wastewater. Highlights The material has abundant oxygen-containing functional groups, which are beneficial for binding Co(II).; The isotherm process could be well described by the Langmuir isotherm model and pseudo-second-order kinetic model.; The adsorbent has an efficient adsorption capacity for Co(II), as high as 72.27 mg·g−1.;Chunlian HuWei ZhangYuantao ChenNa YeDaWa YangJiHaizhe JiaYanting ShenMinna SongIWA Publishingarticleadsorptionadsorption mechanismcobaltcsbisothermskineticsEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 1, Pp 251-261 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption adsorption mechanism cobalt csb isotherms kinetics Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption adsorption mechanism cobalt csb isotherms kinetics Environmental technology. Sanitary engineering TD1-1066 Chunlian Hu Wei Zhang Yuantao Chen Na Ye DaWa YangJi Haizhe Jia Yanting Shen Minna Song Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3
description	Here adsorption studies were proposed on a carboxylated sludge biochar (CSB) material modified by HNO3 to assess its capacity in the removal of cobalt from aqueous solution. The as-prepared sludge biochar material was characterized by Brunauer-Emmett-Teller (BET) analysis, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), energy-dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The isotherm process could be well described by the Langmuir isotherm model. The adsorption kinetics indicated that cobalt adsorption followed a pseudo-second-order kinetics model. The mechanism between Co(II) and biochar involved electrostatic interaction, ion exchange, surface complexation and physical function. The adsorption capacity on CSB was as high as 72.27 mg·g−1, surpassing original sludge biochar (SB) as CSB had abundant oxygen-containing functional groups and many hydroxyls, plus the BET surface areas increased when SB was modified by HNO3, which stimulated adsorption effect. Therefore, this work shows that CSB could be used as an efficient adsorbent to remove Co(II) in wastewater. Highlights The material has abundant oxygen-containing functional groups, which are beneficial for binding Co(II).; The isotherm process could be well described by the Langmuir isotherm model and pseudo-second-order kinetic model.; The adsorbent has an efficient adsorption capacity for Co(II), as high as 72.27 mg·g−1.;
format	article
author	Chunlian Hu Wei Zhang Yuantao Chen Na Ye DaWa YangJi Haizhe Jia Yanting Shen Minna Song
author_facet	Chunlian Hu Wei Zhang Yuantao Chen Na Ye DaWa YangJi Haizhe Jia Yanting Shen Minna Song
author_sort	Chunlian Hu
title	Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3
title_short	Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3
title_full	Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3
title_fullStr	Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3
title_full_unstemmed	Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3
title_sort	adsorption of co(ii) from aqueous solution using municipal sludge biochar modified by hno3
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/fcb3db2221af420d88a6fefd41c9f2e8
work_keys_str_mv	AT chunlianhu adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT weizhang adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT yuantaochen adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT naye adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT dawayangji adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT haizhejia adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT yantingshen adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3 AT minnasong adsorptionofcoiifromaqueoussolutionusingmunicipalsludgebiocharmodifiedbyhno3
_version_	1718443772137701376

Adsorption of Co(II) from aqueous solution using municipal sludge biochar modified by HNO3

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