Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers

Adsorptive properties for Cd(II), Cr(III), Cu(II), Ni(II), Pb(II) and Zn(II) onto amidoxime-functionalized polyacrylonitrile (APAN) micro/nanofibers were systematically investigated in a hexahydroxy metallic solution system using batch experiments. The interactive effect of multi-metal ions in multi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Huiqing Lou, Siyu Li, Xiangwei Feng, Xianzhong Cao
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption behavior adsorption capacity apan micro/nanofibers competitive adsorption hexahydroxy metallic system mechanism Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/71e996ad87da40e78339af47f5d1a76f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:71e996ad87da40e78339af47f5d1a76f
record_format	dspace
spelling	oai:doaj.org-article:71e996ad87da40e78339af47f5d1a76f2021-11-05T21:17:10ZCompetitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers1751-231X10.2166/wpt.2021.084https://doaj.org/article/71e996ad87da40e78339af47f5d1a76f2021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1327https://doaj.org/toc/1751-231XAdsorptive properties for Cd(II), Cr(III), Cu(II), Ni(II), Pb(II) and Zn(II) onto amidoxime-functionalized polyacrylonitrile (APAN) micro/nanofibers were systematically investigated in a hexahydroxy metallic solution system using batch experiments. The interactive effect of multi-metal ions in multi- metal systems was antagonistic in nature, and the adsorption capacity in a multi-metal system was lower than that in a single-metal system. The Langmuir isotherm model could explain respectively the isotherm and kinetic experimental data for the hexahydroxy metallic system with much satisfaction. The maximum adsorption capacity in hexahydroxy metallic for Cd(II), Cr(III), Cu(II), Ni(II), Pb(II) and Zn(II) was calculated to be 98 mg/L, 158 mg/L, 80 mg/L, 76, 312 and 58 mg/L individually. The APAN micro/nanofibers possessed good selectivity toward Pb(II) and Cr(III), over Cd(II), Cu(II), Ni(II), and Zn(II), having the highest selectivity coefficients at 17.52 and 6.07 in the test range. The five adsorption-desorption cycle experiments exhibited that APAN micro/nanofibers adsorbent are readily reusable, and have potential for heavy metal removal from wastewater. The adsorption behavior in multi-metal systems was shown to be complex, including surface complexation, antagonistic competition and displacement reactions. The diversity and selectivity in metal ion adsorption onto the micro/nanofibers relate mainly to the stability constants, and the microscopic coupling mechanism between the heavy metal ions and the functional groups on the fiber surface. This interaction mechanism between the favorable component and other metal ions could contribute significantly to the direct displacement impact illustrated schematically. HIGHLIGHTS Amidoxime-functionalized polyacrylonitrile micro/nanofibers were prepared.; Competitive adsorption behavior of hexahydroxy metallic system was investigated.; APAN micro/nanofibers had a better selective adsorption for Pb(II) and Cr(III).; The mechanisms included surface complexation, antagonistic competition and displacement reaction.;Huiqing LouSiyu LiXiangwei FengXianzhong CaoIWA Publishingarticleadsorption behavioradsorption capacityapan micro/nanofiberscompetitive adsorptionhexahydroxy metallic systemmechanismEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1327-1342 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption behavior adsorption capacity apan micro/nanofibers competitive adsorption hexahydroxy metallic system mechanism Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption behavior adsorption capacity apan micro/nanofibers competitive adsorption hexahydroxy metallic system mechanism Environmental technology. Sanitary engineering TD1-1066 Huiqing Lou Siyu Li Xiangwei Feng Xianzhong Cao Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
description	Adsorptive properties for Cd(II), Cr(III), Cu(II), Ni(II), Pb(II) and Zn(II) onto amidoxime-functionalized polyacrylonitrile (APAN) micro/nanofibers were systematically investigated in a hexahydroxy metallic solution system using batch experiments. The interactive effect of multi-metal ions in multi- metal systems was antagonistic in nature, and the adsorption capacity in a multi-metal system was lower than that in a single-metal system. The Langmuir isotherm model could explain respectively the isotherm and kinetic experimental data for the hexahydroxy metallic system with much satisfaction. The maximum adsorption capacity in hexahydroxy metallic for Cd(II), Cr(III), Cu(II), Ni(II), Pb(II) and Zn(II) was calculated to be 98 mg/L, 158 mg/L, 80 mg/L, 76, 312 and 58 mg/L individually. The APAN micro/nanofibers possessed good selectivity toward Pb(II) and Cr(III), over Cd(II), Cu(II), Ni(II), and Zn(II), having the highest selectivity coefficients at 17.52 and 6.07 in the test range. The five adsorption-desorption cycle experiments exhibited that APAN micro/nanofibers adsorbent are readily reusable, and have potential for heavy metal removal from wastewater. The adsorption behavior in multi-metal systems was shown to be complex, including surface complexation, antagonistic competition and displacement reactions. The diversity and selectivity in metal ion adsorption onto the micro/nanofibers relate mainly to the stability constants, and the microscopic coupling mechanism between the heavy metal ions and the functional groups on the fiber surface. This interaction mechanism between the favorable component and other metal ions could contribute significantly to the direct displacement impact illustrated schematically. HIGHLIGHTS Amidoxime-functionalized polyacrylonitrile micro/nanofibers were prepared.; Competitive adsorption behavior of hexahydroxy metallic system was investigated.; APAN micro/nanofibers had a better selective adsorption for Pb(II) and Cr(III).; The mechanisms included surface complexation, antagonistic competition and displacement reaction.;
format	article
author	Huiqing Lou Siyu Li Xiangwei Feng Xianzhong Cao
author_facet	Huiqing Lou Siyu Li Xiangwei Feng Xianzhong Cao
author_sort	Huiqing Lou
title	Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
title_short	Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
title_full	Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
title_fullStr	Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
title_full_unstemmed	Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
title_sort	competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/71e996ad87da40e78339af47f5d1a76f
work_keys_str_mv	AT huiqinglou competitiveadsorptionandmechanismofhexahydroxymetallicsystembyaminatedsolutionblownpolyacrylonitrilemicronanofibers AT siyuli competitiveadsorptionandmechanismofhexahydroxymetallicsystembyaminatedsolutionblownpolyacrylonitrilemicronanofibers AT xiangweifeng competitiveadsorptionandmechanismofhexahydroxymetallicsystembyaminatedsolutionblownpolyacrylonitrilemicronanofibers AT xianzhongcao competitiveadsorptionandmechanismofhexahydroxymetallicsystembyaminatedsolutionblownpolyacrylonitrilemicronanofibers
_version_	1718443987070615552

Competitive adsorption and mechanism of hexahydroxy metallic system by aminated solution-blown polyacrylonitrile micro/nanofibers

Ejemplares similares