Pb2+ adsorption on birnessite affected by Zn2+ and Mn2+ pretreatments |
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| Authors: | Wei Zhao Qing Qing Wang Fan Liu Guo Hong Qiu Wen Feng Tan Xiong Han Feng |
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| Affiliation: | (1) Key Laboratory of Subtropical Agriculture Resource and Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, People’s Republic of China;(2) State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, No.26, Xinong Road, Yangling, Shaanxi, 712100, People’s Republic of China; |
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| Abstract: | Purpose Lead contamination is ubiquitous, and much attention has been paid due to its toxicity. The phyllomanganate birnessite is the most common Mn oxide in soils. The MnO6 octahedral layers may have significant Mn vacancies in the hexagonal birnessites. Among heavy metal ions, birnessites possess the greatest adsorption affinity and capacity for Pb2+. The aim of this study was to understand the relationship between vacant Mn octahedral sites and Pb2+ adsorption. |
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