Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China

Long-term polluted rivers often lead to the accumulation of heavy metals in sediments. Anthropogenic activities or biological disturbances break the adsorption balance, causing them to return from the bottom mud to the overlying water and change the aquatic environment. In order to understand the va...

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Autores principales:	Yanqi Zhao, Ying Yang, Rongkun Dai, Sobkowiak Leszek, Xinyi Wang, Lizhi Xiao
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	disturbed experiment heavy metal infiltration migration overlying water sediment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/5030319e86c6425883d37baf50a165d1
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spelling	oai:doaj.org-article:5030319e86c6425883d37baf50a165d12021-11-06T11:20:25ZAdsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China0273-12231996-973210.2166/wst.2021.314https://doaj.org/article/5030319e86c6425883d37baf50a165d12021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/5/1257https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Long-term polluted rivers often lead to the accumulation of heavy metals in sediments. Anthropogenic activities or biological disturbances break the adsorption balance, causing them to return from the bottom mud to the overlying water and change the aquatic environment. In order to understand the variation of heavy metals between sediments and river water, we collected the riverbed sediments in the polluted Xinhe River and carried out static continuous infiltration and dynamic uninterrupted disturbance experiments. The leaching experiment shows that the absorbability of Cd and Pb is stronger than Cr in the sediment; at the same time, the properties of the medium have a great influence on the adsorption of heavy metals. The disturbance can prompt heavy metals in the sediment to resuspend into the overlying water. The impact is the greatest during the first 12 h, and the influence degree is stronger in the relatively static water than in the moving river. In addition, pH and other factors have different degrees of influence on the desorption of heavy metals. HIGHLIGHTS The static infiltration and dynamic agitation experiments were carried out.; The adsorption performances of Cd and Pb were better than that of Cr.; Disturbances greatly affect heavy metals in sediments especially at the first 12 h.; Disturbance has irregular effect on Fe and Cu in sediments.; Influence of disturbance in static water on heavy metals is greater than that in flowing water.;Yanqi ZhaoYing YangRongkun DaiSobkowiak LeszekXinyi WangLizhi XiaoIWA Publishingarticledisturbed experimentheavy metalinfiltrationmigrationoverlying watersedimentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 5, Pp 1257-1269 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	disturbed experiment heavy metal infiltration migration overlying water sediment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	disturbed experiment heavy metal infiltration migration overlying water sediment Environmental technology. Sanitary engineering TD1-1066 Yanqi Zhao Ying Yang Rongkun Dai Sobkowiak Leszek Xinyi Wang Lizhi Xiao Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China
description	Long-term polluted rivers often lead to the accumulation of heavy metals in sediments. Anthropogenic activities or biological disturbances break the adsorption balance, causing them to return from the bottom mud to the overlying water and change the aquatic environment. In order to understand the variation of heavy metals between sediments and river water, we collected the riverbed sediments in the polluted Xinhe River and carried out static continuous infiltration and dynamic uninterrupted disturbance experiments. The leaching experiment shows that the absorbability of Cd and Pb is stronger than Cr in the sediment; at the same time, the properties of the medium have a great influence on the adsorption of heavy metals. The disturbance can prompt heavy metals in the sediment to resuspend into the overlying water. The impact is the greatest during the first 12 h, and the influence degree is stronger in the relatively static water than in the moving river. In addition, pH and other factors have different degrees of influence on the desorption of heavy metals. HIGHLIGHTS The static infiltration and dynamic agitation experiments were carried out.; The adsorption performances of Cd and Pb were better than that of Cr.; Disturbances greatly affect heavy metals in sediments especially at the first 12 h.; Disturbance has irregular effect on Fe and Cu in sediments.; Influence of disturbance in static water on heavy metals is greater than that in flowing water.;
format	article
author	Yanqi Zhao Ying Yang Rongkun Dai Sobkowiak Leszek Xinyi Wang Lizhi Xiao
author_facet	Yanqi Zhao Ying Yang Rongkun Dai Sobkowiak Leszek Xinyi Wang Lizhi Xiao
author_sort	Yanqi Zhao
title	Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China
title_short	Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China
title_full	Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China
title_fullStr	Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China
title_full_unstemmed	Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China
title_sort	adsorption and migration of heavy metals between sediments and overlying water in the xinhe river in central china
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/5030319e86c6425883d37baf50a165d1
work_keys_str_mv	AT yanqizhao adsorptionandmigrationofheavymetalsbetweensedimentsandoverlyingwaterinthexinheriverincentralchina AT yingyang adsorptionandmigrationofheavymetalsbetweensedimentsandoverlyingwaterinthexinheriverincentralchina AT rongkundai adsorptionandmigrationofheavymetalsbetweensedimentsandoverlyingwaterinthexinheriverincentralchina AT sobkowiakleszek adsorptionandmigrationofheavymetalsbetweensedimentsandoverlyingwaterinthexinheriverincentralchina AT xinyiwang adsorptionandmigrationofheavymetalsbetweensedimentsandoverlyingwaterinthexinheriverincentralchina AT lizhixiao adsorptionandmigrationofheavymetalsbetweensedimentsandoverlyingwaterinthexinheriverincentralchina
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Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China

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