Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal

In the present investigation, a one-step synthesis of hydrochar (HC) supported zero-valent iron (ZVI) was performed through hydrothermal carbonization (HTC) of granatum and ZVI. According to XRD, XPS, and FTIR data, ZVI was evenly distributed on the surface of the hydrochar. In addition, the externa...

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Autores principales:	Guangyin Jia, Xiangchao Tang, Jie Xu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	composites hydrochar pb2+ adsorption surface area zero valent iron Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/568b2b3632f64bbd862f0fb7ce2be819
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spelling	oai:doaj.org-article:568b2b3632f64bbd862f0fb7ce2be8192021-11-06T11:26:03ZSynthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal0273-12231996-973210.2166/wst.2021.366https://doaj.org/article/568b2b3632f64bbd862f0fb7ce2be8192021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/8/1873https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732In the present investigation, a one-step synthesis of hydrochar (HC) supported zero-valent iron (ZVI) was performed through hydrothermal carbonization (HTC) of granatum and ZVI. According to XRD, XPS, and FTIR data, ZVI was evenly distributed on the surface of the hydrochar. In addition, the external ZVI oxide layer and the functional groups present in the hydrochar remained on the surface of the HC/ZVI composites after HTC treatment. The surface area of the HC/ZVI composites was between 31.11 and 44.16 m2/g. These numbers were higher than those obtained for hydrochar (20.36 m2/g) and ZVI (12.14 m2/g) separately. The Pb2+ adsorption capacity of hydrochar and ZVI was 28.64 and 192.44 mg/g, respectively (25 °C, pH = 6.05, Pb2+ concentration of 200 mg/L with 0.05 g HC and 0.01 g ZVI). In addition, the adsorption capacity of the composites was between 49.63 and 88.09 mg/g. The data obtained for Pb2+ removal by the samples used in this experiments fitted well the pseudo-second-order kinetics and Langmuir isotherm models. Therefore, hydrochar may represent a promising supporting material for the synthesis of ZVI composites. HIGHLIGHTS The composites was prepared via hydrothermal carbonization of granatum and nZVI.; The ZVI was evenly distributed on the surface of the hydrochar.; The functional groups on the surface of hydrochar were retained in the composites.; The strong reducibility of ZVI was preserved for the composites.; The Pb2+ adsorption capacity of the composites was between 49.63 and 88.09 mg/g.;Guangyin JiaXiangchao TangJie XuIWA Publishingarticlecompositeshydrocharpb2+ adsorptionsurface areazero valent ironEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 8, Pp 1873-1884 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	composites hydrochar pb2+ adsorption surface area zero valent iron Environmental technology. Sanitary engineering TD1-1066
spellingShingle	composites hydrochar pb2+ adsorption surface area zero valent iron Environmental technology. Sanitary engineering TD1-1066 Guangyin Jia Xiangchao Tang Jie Xu Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal
description	In the present investigation, a one-step synthesis of hydrochar (HC) supported zero-valent iron (ZVI) was performed through hydrothermal carbonization (HTC) of granatum and ZVI. According to XRD, XPS, and FTIR data, ZVI was evenly distributed on the surface of the hydrochar. In addition, the external ZVI oxide layer and the functional groups present in the hydrochar remained on the surface of the HC/ZVI composites after HTC treatment. The surface area of the HC/ZVI composites was between 31.11 and 44.16 m2/g. These numbers were higher than those obtained for hydrochar (20.36 m2/g) and ZVI (12.14 m2/g) separately. The Pb2+ adsorption capacity of hydrochar and ZVI was 28.64 and 192.44 mg/g, respectively (25 °C, pH = 6.05, Pb2+ concentration of 200 mg/L with 0.05 g HC and 0.01 g ZVI). In addition, the adsorption capacity of the composites was between 49.63 and 88.09 mg/g. The data obtained for Pb2+ removal by the samples used in this experiments fitted well the pseudo-second-order kinetics and Langmuir isotherm models. Therefore, hydrochar may represent a promising supporting material for the synthesis of ZVI composites. HIGHLIGHTS The composites was prepared via hydrothermal carbonization of granatum and nZVI.; The ZVI was evenly distributed on the surface of the hydrochar.; The functional groups on the surface of hydrochar were retained in the composites.; The strong reducibility of ZVI was preserved for the composites.; The Pb2+ adsorption capacity of the composites was between 49.63 and 88.09 mg/g.;
format	article
author	Guangyin Jia Xiangchao Tang Jie Xu
author_facet	Guangyin Jia Xiangchao Tang Jie Xu
author_sort	Guangyin Jia
title	Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal
title_short	Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal
title_full	Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal
title_fullStr	Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal
title_full_unstemmed	Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal
title_sort	synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for pb2+ removal
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/568b2b3632f64bbd862f0fb7ce2be819
work_keys_str_mv	AT guangyinjia synthesisofhydrocharsupportedzerovalentironcompositesthroughhydrothermalcarbonizationofgranatumandzerovalentironpotentialapplicationsforpb2removal AT xiangchaotang synthesisofhydrocharsupportedzerovalentironcompositesthroughhydrothermalcarbonizationofgranatumandzerovalentironpotentialapplicationsforpb2removal AT jiexu synthesisofhydrocharsupportedzerovalentironcompositesthroughhydrothermalcarbonizationofgranatumandzerovalentironpotentialapplicationsforpb2removal
_version_	1718443668929511424

Synthesis of hydrochar supported zero-valent iron composites through hydrothermal carbonization of granatum and zero-valent iron: potential applications for Pb2+ removal

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