| Relation of lead adsorption on birnessites with different average oxidation states of manganese and release of Mn^2＋/H^＋/K^＋ |
| |
| 作者单位： | Key Lab of Subtropical Agriculture Resource &Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China |
| |
| 基金项目： | 国家自然科学基金,the National Excellent Doctoral Dissertation of China |
| |
| 摘 要： | The characteristics of Pb2+ adsorption on the surface of birnessites with different average oxidation states (AOS) of Mn, synthesized under acidic and alkali conditions, were investigated. The results indicated that the amount of adsorbed Pb2+ increased with the increase of Mn AOS in birnessites. The amount of Pb2+ adsorbed positively correlated with the amount of released Mn2+, H+, and K+ (r = 0.9962 > 0.6614, n = 14, α = 0.01). The released Mn2+, H+, and K+ were derived mostly from the corresponding catio...
|
| 关 键 词： | 吸附表面 氧化锰 平均 铅 小时 碱性条件 业务服务 注册商标 |
Relation of lead adsorption on birnessites with different average oxidation states of manganese and release of Mn~(2+)/H~+/K~+ |
| |
| Zhao Wei,Feng Xionghan,Tan Wenfeng,Liu Fan,Ding Shuwen. Relation of lead adsorption on birnessites with different average oxidation states of manganese and release of Mn~(2+)/H~+/K~+[J]. Journal of environmental sciences (China), 2009, 21(4). DOI: 10.1016/S1001-0742(08)62302-5 |
| |
| Authors: | Zhao Wei Feng Xionghan Tan Wenfeng Liu Fan Ding Shuwen |
| |
| Affiliation: | Key Lab of Subtropical Agriculture Resource &Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China |
| |
| Abstract: | The characteristics of Pb2+ adsorption on the surface of birnessites with different average oxidation states (AOS) of Mn, synthesized under acidic and alkali conditions, were investigated. The results indicated that the amount of adsorbed Pb2+ increased with the increase of Mn AOS in birnessites. The amount of Pb2+ adsorbed positively correlated with the amount of released Mn2+, H+ and K+ (r = 0.9962 > 0.6614, n = 14, α = 0.01). The released Mn2+, H+ and K+ were derived mostly from the corresponding cations adsorbed on the vacant sites. The maximum amount of adsorbed Pb2+ increased with the increasing vacant cation sites, leading to an increase of the total amount of released Mn2+, H+ and K+, and the increased likelihood for two Pb2+ adsorbed in the region of one side of a vacant site. |
| |
| Keywords: | Pb2 adsorption birnessite vacant site cation release |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
