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[1]李文婕,陈云,余训民*,等.冶炼废水处理污泥中金的浸出过程动力学[J].武汉工程大学学报,2012,(05):31-34.[doi:103969/jissn16742869201205009]
 LI Wen\|jie,CHEN Yun,YU Xun\|min,et al.Kinetics of leaching gold from processed sludge of nonferrous metal smelting waste water[J].Journal of Wuhan Institute of Technology,2012,(05):31-34.[doi:103969/jissn16742869201205009]
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冶炼废水处理污泥中金的浸出过程动力学
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2012年05期
页码:
31-34
栏目:
资源与土木工程
出版日期:
2012-05-31

文章信息/Info

Title:
Kinetics of leaching gold from processed sludge of nonferrous
metal smelting waste water
文章编号:
16742869(2012)05003104
作者:
李文婕陈云余训民*李庆新关洪亮
武汉工程大学环境与城市建设学院,湖北 武汉 430074
Author(s):
LI Wen\|jieCHEN YunYU Xun\|minLI Qing\|xinGUAN Hong\|liang
School of Environment and Civil Engineering, Wuhan Institute of Technology,Wuhan 430074,China
关键词:
有色冶炼废水污泥 硫氰酸铵 浸出 模型 动力学
Keywords:
nonferrous metal smelting waste water sludge ammonium thiocyanate leaching model kinetics
分类号:
X703
DOI:
103969/jissn16742869201205009
文献标志码:
A
摘要:
有色冶炼废水处理污泥中含有7.70 g/t的金和90.30 g/t的银,从污泥中提取金、银等有价金属,不仅可以减小污泥对环境的危害,还能较好地避免资源浪费.以硫氰酸铵为浸出剂对除砷后的二次污泥进行了浸金研究,并采用未反应核收缩模型对浸金过程的表观动力学进行了探讨,通过尝试法确定了浸出过程的控制步骤. 结果表明,搅拌强度为250 r/min时,该浸出过程受固体产物层扩散控制,其动力学方程为1-2η/3-(1\|η)2/3=kDt,反应扩散系数为D′=10.807 exp(-9 855/RT),cm5.359 4mol-1.119 8s-1,表观活化能为9.855 kJ/mol.
Abstract:
Processed sluge from nonferrous metal smelting waste water contains gold 7.70 g/t and silver 90.30 g/t. Extraction of valuable metals such as gold and silver from the sludge can not only reduce the hazards of sludge on the environment, but also avoid wasting resources effectively. Ammonium thiocyanate was used as leaching reagent for extracting gold from the arsenic\|free anode sludge (secondary sludge). The apparent kinetics of the gold leaching process was discussed by adopting the unreacted core contracting model and the controlling steps of the leaching process were confirmed by tentative method. The results show that the leaching process is under the diffusion control of solid product layer while the stirring intensity is 250 r/min,the kinetics equation, the diffusion coefficient and the apparent activation energy are 1\|2η/3-(1\|η)2/3=kDt, D′=10.807exp(-9 855/RT),cm5.3594mol-1.1198s-1and 9.855 kJ/mol, respectively.

参考文献/References:

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[2]巫瑞中. 石灰-铁盐法处理含重金属及砷工业废水[J]. 江西理工大学学报,2006,27(3):58-61.
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备注/Memo

备注/Memo:
收稿日期:20120305作者简介:李文婕(1989-),女,湖北天门人,硕士研究生.研究方向:废物资源化利用.指导老师:余训民,男,教授,硕士研究生导师.研究方向:环境新材料、废物资源化利用和水环境化学污染控制.
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