Lead adsorption by biochar under the elevated competition of cadmium and aluminum

Abstract Competitive adsorption studies are important to accurately estimate the lead adsorption capacity on biochar in soil. The structure of biochars was evaluated by Fourier-Transform Infrared Spectroscopy and X-ray Diffraction, and the competitive of Cadmium (Cd) and Aluminum (Al) with Lead (Pb)...

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Autores principales:	Lu Han, Linbo Qian, Rongqin Liu, Mengfang Chen, Jingchun Yan, Qinhong Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bffb61f9bf9747c09788564a47cdc170
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spelling	oai:doaj.org-article:bffb61f9bf9747c09788564a47cdc1702021-12-02T11:52:23ZLead adsorption by biochar under the elevated competition of cadmium and aluminum10.1038/s41598-017-02353-42045-2322https://doaj.org/article/bffb61f9bf9747c09788564a47cdc1702017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02353-4https://doaj.org/toc/2045-2322Abstract Competitive adsorption studies are important to accurately estimate the lead adsorption capacity on biochar in soil. The structure of biochars was evaluated by Fourier-Transform Infrared Spectroscopy and X-ray Diffraction, and the competitive of Cadmium (Cd) and Aluminum (Al) with Lead (Pb) adsorption were determined by kinetic experiments and pH effects. Adsorption kinetics indicated that the adsorption amount (mg g−1) of Pb by biochar was in the decreasing order of CM400 (90.9) > BB600 (56.5) > CM100 (29.2), the presence of the oxygen-containing functional groups, Si-containing mineral, PO4 3− and CO3 2− significantly contributed to Pb adsorption by biochars. With the presence of Cd, Pb adsorption amount was reduced by 42.6%, 23.7% and 19.3% for CM100, CM400 and BB600, respectively. The Si-containing mineral, PO4 3− and CO3 2− that were rich in CM400 and BB600 has led to less competition by Cd. In addition, Al showed a strong competition with Pb leading to the adsorption being reduced by 95.8%, 82.3% and 80.6%, respectively for CM100, CM400 and BB600. This was mainly attributed to the additional acidification effect by Al resulting in a counteractive of biochar’s liming effect. Results from this study are important for accurately estimating the heavy metal adsorption by biochar in soil.Lu HanLinbo QianRongqin LiuMengfang ChenJingchun YanQinhong HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lu Han Linbo Qian Rongqin Liu Mengfang Chen Jingchun Yan Qinhong Hu Lead adsorption by biochar under the elevated competition of cadmium and aluminum
description	Abstract Competitive adsorption studies are important to accurately estimate the lead adsorption capacity on biochar in soil. The structure of biochars was evaluated by Fourier-Transform Infrared Spectroscopy and X-ray Diffraction, and the competitive of Cadmium (Cd) and Aluminum (Al) with Lead (Pb) adsorption were determined by kinetic experiments and pH effects. Adsorption kinetics indicated that the adsorption amount (mg g−1) of Pb by biochar was in the decreasing order of CM400 (90.9) > BB600 (56.5) > CM100 (29.2), the presence of the oxygen-containing functional groups, Si-containing mineral, PO4 3− and CO3 2− significantly contributed to Pb adsorption by biochars. With the presence of Cd, Pb adsorption amount was reduced by 42.6%, 23.7% and 19.3% for CM100, CM400 and BB600, respectively. The Si-containing mineral, PO4 3− and CO3 2− that were rich in CM400 and BB600 has led to less competition by Cd. In addition, Al showed a strong competition with Pb leading to the adsorption being reduced by 95.8%, 82.3% and 80.6%, respectively for CM100, CM400 and BB600. This was mainly attributed to the additional acidification effect by Al resulting in a counteractive of biochar’s liming effect. Results from this study are important for accurately estimating the heavy metal adsorption by biochar in soil.
format	article
author	Lu Han Linbo Qian Rongqin Liu Mengfang Chen Jingchun Yan Qinhong Hu
author_facet	Lu Han Linbo Qian Rongqin Liu Mengfang Chen Jingchun Yan Qinhong Hu
author_sort	Lu Han
title	Lead adsorption by biochar under the elevated competition of cadmium and aluminum
title_short	Lead adsorption by biochar under the elevated competition of cadmium and aluminum
title_full	Lead adsorption by biochar under the elevated competition of cadmium and aluminum
title_fullStr	Lead adsorption by biochar under the elevated competition of cadmium and aluminum
title_full_unstemmed	Lead adsorption by biochar under the elevated competition of cadmium and aluminum
title_sort	lead adsorption by biochar under the elevated competition of cadmium and aluminum
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bffb61f9bf9747c09788564a47cdc170
work_keys_str_mv	AT luhan leadadsorptionbybiocharundertheelevatedcompetitionofcadmiumandaluminum AT linboqian leadadsorptionbybiocharundertheelevatedcompetitionofcadmiumandaluminum AT rongqinliu leadadsorptionbybiocharundertheelevatedcompetitionofcadmiumandaluminum AT mengfangchen leadadsorptionbybiocharundertheelevatedcompetitionofcadmiumandaluminum AT jingchunyan leadadsorptionbybiocharundertheelevatedcompetitionofcadmiumandaluminum AT qinhonghu leadadsorptionbybiocharundertheelevatedcompetitionofcadmiumandaluminum
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Lead adsorption by biochar under the elevated competition of cadmium and aluminum

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