Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents

Phosphorus removal is a crucial aspect of controlling water pollution and eutrophication. In this study, the preparation of lanthanum carbonate (LC) nano-adsorbents for the efficient removal of phosphate (P) from water and wastewater was investigated. Results from XRD, SEM and Zeta potential analyse...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yifan Lu, Huawei Wu, Yan Xia, Mei Huang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption kinetics amorphous lanthanum carbonate langmuir model nano-adsorbents phosphate removal water treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/bbbb41b108554bbb9b0ea5064ed19292
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:bbbb41b108554bbb9b0ea5064ed19292
record_format	dspace
spelling	oai:doaj.org-article:bbbb41b108554bbb9b0ea5064ed192922021-11-06T10:54:13ZStrong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents0273-12231996-973210.2166/wst.2021.086https://doaj.org/article/bbbb41b108554bbb9b0ea5064ed192922021-04-01T00:00:00Zhttp://wst.iwaponline.com/content/83/7/1605https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Phosphorus removal is a crucial aspect of controlling water pollution and eutrophication. In this study, the preparation of lanthanum carbonate (LC) nano-adsorbents for the efficient removal of phosphate (P) from water and wastewater was investigated. Results from XRD, SEM and Zeta potential analyses revealed that addition of magnesium ions and adjustment of the reaction temperature could control the morphology and microstructure of LC. Effects of initial pH, adsorbent dosage, contact time, and the water matrix on P adsorption were investigated. Batch adsorption experiments revealed that LC showed strong performance on P removal over a wide pH range (3.0 to 11.0). The kinetic data followed a pseudo-second-order model, and equilibrium data were well fitted by the Langmuir model with a maximum adsorption capacity of 112.9 mg P/g. Adsorption thermodynamics showed that the adsorption process was exothermic and spontaneous. Results of a monolayer model for single adsorption indicated that P could completely interact with two or more functional groups from the LC surface. In the presence of competing ions (F−, Cl−, SO42−, NO3−, and HCO3−), LC maintained high selectivity for phosphate. For a real effluent, the P concentration was efficiently reduced from 3.2 mg P/L to below 0.5 mg P/L at a dose of 0.5 g/L LC. All the results suggested that LC can serve as a promising adsorbent for P removal in a wide range of pH, and thus could meet the stricter discharge regulations from actual wastewater. HIGHLIGHTS High phosphate binding efficiency of amorphous lanthanum carbonate.; The affinity of lanthanum carbonate nano-adsorbents toward phosphate was high over a pH range of 3.0–11.0.; The Langmuir adsorption maximum for phosphate reached 112.9 mg P/g.;Yifan LuHuawei WuYan XiaMei HuangIWA Publishingarticleadsorption kineticsamorphous lanthanum carbonatelangmuir modelnano-adsorbentsphosphate removalwater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 7, Pp 1605-1618 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption kinetics amorphous lanthanum carbonate langmuir model nano-adsorbents phosphate removal water treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption kinetics amorphous lanthanum carbonate langmuir model nano-adsorbents phosphate removal water treatment Environmental technology. Sanitary engineering TD1-1066 Yifan Lu Huawei Wu Yan Xia Mei Huang Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
description	Phosphorus removal is a crucial aspect of controlling water pollution and eutrophication. In this study, the preparation of lanthanum carbonate (LC) nano-adsorbents for the efficient removal of phosphate (P) from water and wastewater was investigated. Results from XRD, SEM and Zeta potential analyses revealed that addition of magnesium ions and adjustment of the reaction temperature could control the morphology and microstructure of LC. Effects of initial pH, adsorbent dosage, contact time, and the water matrix on P adsorption were investigated. Batch adsorption experiments revealed that LC showed strong performance on P removal over a wide pH range (3.0 to 11.0). The kinetic data followed a pseudo-second-order model, and equilibrium data were well fitted by the Langmuir model with a maximum adsorption capacity of 112.9 mg P/g. Adsorption thermodynamics showed that the adsorption process was exothermic and spontaneous. Results of a monolayer model for single adsorption indicated that P could completely interact with two or more functional groups from the LC surface. In the presence of competing ions (F−, Cl−, SO42−, NO3−, and HCO3−), LC maintained high selectivity for phosphate. For a real effluent, the P concentration was efficiently reduced from 3.2 mg P/L to below 0.5 mg P/L at a dose of 0.5 g/L LC. All the results suggested that LC can serve as a promising adsorbent for P removal in a wide range of pH, and thus could meet the stricter discharge regulations from actual wastewater. HIGHLIGHTS High phosphate binding efficiency of amorphous lanthanum carbonate.; The affinity of lanthanum carbonate nano-adsorbents toward phosphate was high over a pH range of 3.0–11.0.; The Langmuir adsorption maximum for phosphate reached 112.9 mg P/g.;
format	article
author	Yifan Lu Huawei Wu Yan Xia Mei Huang
author_facet	Yifan Lu Huawei Wu Yan Xia Mei Huang
author_sort	Yifan Lu
title	Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
title_short	Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
title_full	Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
title_fullStr	Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
title_full_unstemmed	Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
title_sort	strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/bbbb41b108554bbb9b0ea5064ed19292
work_keys_str_mv	AT yifanlu strongadsorptionofphosphatebyamorphouslanthanumcarbonatenanoadsorbents AT huaweiwu strongadsorptionofphosphatebyamorphouslanthanumcarbonatenanoadsorbents AT yanxia strongadsorptionofphosphatebyamorphouslanthanumcarbonatenanoadsorbents AT meihuang strongadsorptionofphosphatebyamorphouslanthanumcarbonatenanoadsorbents
_version_	1718443757185007616

Strong adsorption of phosphate by amorphous lanthanum carbonate nano-adsorbents

Ejemplares similares