Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals

The adsorption performance of pyridine onto polyaluminium chloride (PAC) and anionic polyacrylamide (APAM) water treatment residuals (WTRs) was investigated by batch experiments. This study confirmed the assumption that PAC–APAM WTRs had the ability to remove pyridine. The non-linear Dubinin–Radushk...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Runbin Duan, Clifford B. Fedler, Xiaofei Jiao
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption isotherms anionic polyacrylamide d–r model polyaluminium chloride pyridine soil remediation Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/9a743889d02e48d9975a6c150bacc7ee
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9a743889d02e48d9975a6c150bacc7ee
record_format	dspace
spelling	oai:doaj.org-article:9a743889d02e48d9975a6c150bacc7ee2021-11-06T10:54:31ZAdsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals0273-12231996-973210.2166/wst.2021.082https://doaj.org/article/9a743889d02e48d9975a6c150bacc7ee2021-04-01T00:00:00Zhttp://wst.iwaponline.com/content/83/7/1753https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The adsorption performance of pyridine onto polyaluminium chloride (PAC) and anionic polyacrylamide (APAM) water treatment residuals (WTRs) was investigated by batch experiments. This study confirmed the assumption that PAC–APAM WTRs had the ability to remove pyridine. The non-linear Dubinin–Radushkevich model and non-linear Freundlich model better described the isotherms, indicating that the adsorption was a chemically controlled multilayer process. The pyridine adsorption rate was simultaneously controlled by external film diffusion and intraparticle diffusion. The adsorption of pyridine was an endothermic reaction with randomness increase. The pyridine adsorption decreased with pH increase. Pyridine removal was observed to be a linear increase from 6.16% to 96.18%, with the increase of dosage from 2.5 g/L to 15 g/L. The Langmuir maximum adsorption capacity was 3.605 mg/g while the theoretical isotherm saturation capacity was 9.823 mg/g. Therefore, PAC–APAM WTRs recycled into contaminated soils for remediation is expected to be an innovative alternative disposal method. More research is recommended in the future to identify detailed adsorption mechanisms and the most appropriate mixing ratio of PAC–APAM WTRs to contaminated soils under various climatic conditions. HIGHLIGHTS The pyridine adsorption by PAC–APAM WTRs was investigated.; The pyridine adsorption decreased with pH increase.; The pyridine adsorption was a multilayer chemisorption process.; The rate was controlled by external film diffusion and intraparticle diffusion.; PAC–APAM WTRs recycling is an innovative alternative to disposal.;Runbin DuanClifford B. FedlerXiaofei JiaoIWA Publishingarticleadsorption isothermsanionic polyacrylamided–r modelpolyaluminium chloridepyridinesoil remediationEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 7, Pp 1753-1763 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption isotherms anionic polyacrylamide d–r model polyaluminium chloride pyridine soil remediation Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption isotherms anionic polyacrylamide d–r model polyaluminium chloride pyridine soil remediation Environmental technology. Sanitary engineering TD1-1066 Runbin Duan Clifford B. Fedler Xiaofei Jiao Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
description	The adsorption performance of pyridine onto polyaluminium chloride (PAC) and anionic polyacrylamide (APAM) water treatment residuals (WTRs) was investigated by batch experiments. This study confirmed the assumption that PAC–APAM WTRs had the ability to remove pyridine. The non-linear Dubinin–Radushkevich model and non-linear Freundlich model better described the isotherms, indicating that the adsorption was a chemically controlled multilayer process. The pyridine adsorption rate was simultaneously controlled by external film diffusion and intraparticle diffusion. The adsorption of pyridine was an endothermic reaction with randomness increase. The pyridine adsorption decreased with pH increase. Pyridine removal was observed to be a linear increase from 6.16% to 96.18%, with the increase of dosage from 2.5 g/L to 15 g/L. The Langmuir maximum adsorption capacity was 3.605 mg/g while the theoretical isotherm saturation capacity was 9.823 mg/g. Therefore, PAC–APAM WTRs recycled into contaminated soils for remediation is expected to be an innovative alternative disposal method. More research is recommended in the future to identify detailed adsorption mechanisms and the most appropriate mixing ratio of PAC–APAM WTRs to contaminated soils under various climatic conditions. HIGHLIGHTS The pyridine adsorption by PAC–APAM WTRs was investigated.; The pyridine adsorption decreased with pH increase.; The pyridine adsorption was a multilayer chemisorption process.; The rate was controlled by external film diffusion and intraparticle diffusion.; PAC–APAM WTRs recycling is an innovative alternative to disposal.;
format	article
author	Runbin Duan Clifford B. Fedler Xiaofei Jiao
author_facet	Runbin Duan Clifford B. Fedler Xiaofei Jiao
author_sort	Runbin Duan
title	Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
title_short	Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
title_full	Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
title_fullStr	Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
title_full_unstemmed	Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
title_sort	adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/9a743889d02e48d9975a6c150bacc7ee
work_keys_str_mv	AT runbinduan adsorptionofpyridinefromaqueoussolutionsontopolyaluminiumchlorideandanionicpolyacrylamidewatertreatmentresiduals AT cliffordbfedler adsorptionofpyridinefromaqueoussolutionsontopolyaluminiumchlorideandanionicpolyacrylamidewatertreatmentresiduals AT xiaofeijiao adsorptionofpyridinefromaqueoussolutionsontopolyaluminiumchlorideandanionicpolyacrylamidewatertreatmentresiduals
_version_	1718443748773330944

Adsorption of pyridine from aqueous solutions onto polyaluminium chloride and anionic polyacrylamide water treatment residuals

Ejemplares similares