Mechanistic study of lead desorption during the leaching process of ion-absorbed rare earths: pH effect and the column experiment
作者: Jie TangQiang XueHonghan ChenWenting Li
作者单位: 1China University of Geosciences
刊名: Environmental Science and Pollution Research, 2017, Vol.24 (14), pp.12918-12926
来源数据库: Springer Journal
DOI: 10.1007/s11356-017-8814-y
关键词: Ion-absorbed rare earth oreLeadDesorptionAmmonium sulfatePH effectColumn tests
英文摘要: High concentrations of ammonium sulfate, often used in the in situ mining process, can result in a decrease of pH in the environment and dissolution of rare earth metals. Ammonium sulfate can also cause desorption of toxic heavy metals, leading to environmental and human health implications. In this study, the desorption behavior and fraction changes of lead in the ion-absorbed rare earth ore were studied using batch desorption experiments and column leaching tests. Results from batch desorption experiments showed that the desorption process of lead included fast and slow stages and followed an Elovich model well. The desorption rate and the proportion of lead content in the solution to the total lead in the soil were observed to increase with a decrease in the initial pH of the ammonium...
原始语种摘要: High concentrations of ammonium sulfate, often used in the in situ mining process, can result in a decrease of pH in the environment and dissolution of rare earth metals. Ammonium sulfate can also cause desorption of toxic heavy metals, leading to environmental and human health implications. In this study, the desorption behavior and fraction changes of lead in the ion-absorbed rare earth ore were studied using batch desorption experiments and column leaching tests. Results from batch desorption experiments showed that the desorption process of lead included fast and slow stages and followed an Elovich model well. The desorption rate and the proportion of lead content in the solution to the total lead in the soil were observed to increase with a decrease in the initial pH of the ammonium...
全文获取路径: Springer  (合作)
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来源刊物:
影响因子:2.618 (2012)

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关键词翻译
关键词翻译
  • 地球 
  • desorption 解吸
  • leaching 淋滤
  • extractable 可提取的
  • fraction 分数
  • absorbed 被吸收的
  • reducible 可还原的
  • solution 溶液
  • ammonium 
  • earth 
  • sulfate 硫酸盐