镍渣的重金属浸出特性

何绪文, 石靖靖, 李静, 王建兵, 柴祯. 镍渣的重金属浸出特性[J]. 环境工程学报, 2014, 8(8): 3385-3389.
引用本文: 何绪文, 石靖靖, 李静, 王建兵, 柴祯. 镍渣的重金属浸出特性[J]. 环境工程学报, 2014, 8(8): 3385-3389.
He Xuwen, Shi Jingjing, Li Jing, Wang Jianbing, Chai Zhen. Leaching characteristics of heavy metals from nickel slag[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3385-3389.
Citation: He Xuwen, Shi Jingjing, Li Jing, Wang Jianbing, Chai Zhen. Leaching characteristics of heavy metals from nickel slag[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3385-3389.

镍渣的重金属浸出特性

  • 基金项目:

    国家公益性基金项目:有色金属采选重点行业(镍钴锡锑)重金属污染控制与管理支撑技术研究(201209013)

  • 中图分类号: X705

Leaching characteristics of heavy metals from nickel slag

  • Fund Project:
  • 摘要: 在分析镍渣的矿物相组成和重金属元素含量的基础上,鉴定了镍渣样品的浸出毒性,并考察了pH、液固比和浸出时间等条件对镍渣样中铬、铅、铜和锌等重金属浸出特性的影响。结果表明,镍渣中的重金属总量约为渣样的0.9%,且铬、铜和锌的含量较高,需进行安全管理。实验所用镍渣样品为第Ⅰ类一般工业固体废物。在强酸条件下镍渣中重金属浸出浓度较大,pH>3后浸出浓度显著降低;液固比40 L/kg后,浸出达到饱和,浸出浓度趋于平衡;随着浸出时间的增加,重金属离子的浸出浓度先增加后减少,但由于各重金属性质不同,各重金属达到最大浸出浓度的时间不同。
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    [8] Jin Z.,Liu T.,Yang Y.,et al.Leaching of cadmium, chromium,copper,lead,and zinc from two slag dumps with different environmental exposure periods under dynamic acidic condition.Ecotoxicology and Environmental Safety,2014,104(2):43-50
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出版历程
  • 收稿日期:  2014-05-13
  • 刊出日期:  2014-07-31
何绪文, 石靖靖, 李静, 王建兵, 柴祯. 镍渣的重金属浸出特性[J]. 环境工程学报, 2014, 8(8): 3385-3389.
引用本文: 何绪文, 石靖靖, 李静, 王建兵, 柴祯. 镍渣的重金属浸出特性[J]. 环境工程学报, 2014, 8(8): 3385-3389.
He Xuwen, Shi Jingjing, Li Jing, Wang Jianbing, Chai Zhen. Leaching characteristics of heavy metals from nickel slag[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3385-3389.
Citation: He Xuwen, Shi Jingjing, Li Jing, Wang Jianbing, Chai Zhen. Leaching characteristics of heavy metals from nickel slag[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3385-3389.

镍渣的重金属浸出特性

  • 1. 中国矿业大学(北京)化学与环境工程学院, 北京 100083
基金项目:

国家公益性基金项目:有色金属采选重点行业(镍钴锡锑)重金属污染控制与管理支撑技术研究(201209013)

摘要: 在分析镍渣的矿物相组成和重金属元素含量的基础上,鉴定了镍渣样品的浸出毒性,并考察了pH、液固比和浸出时间等条件对镍渣样中铬、铅、铜和锌等重金属浸出特性的影响。结果表明,镍渣中的重金属总量约为渣样的0.9%,且铬、铜和锌的含量较高,需进行安全管理。实验所用镍渣样品为第Ⅰ类一般工业固体废物。在强酸条件下镍渣中重金属浸出浓度较大,pH>3后浸出浓度显著降低;液固比40 L/kg后,浸出达到饱和,浸出浓度趋于平衡;随着浸出时间的增加,重金属离子的浸出浓度先增加后减少,但由于各重金属性质不同,各重金属达到最大浸出浓度的时间不同。

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