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电镀污泥回收重金属的新工艺

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丁建东, 唱鹤鸣, 丁勇. 电镀污泥回收重金属的新工艺[J]. 环境工程学报, 2013, 7(5): 1969-1973.
引用本文: 丁建东, 唱鹤鸣, 丁勇. 电镀污泥回收重金属的新工艺[J]. 环境工程学报, 2013, 7(5): 1969-1973.
shu
Ding Jiandong, Chang Heming, Ding Yong. New technology for heavy metals recovery from electroplating sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1969-1973.
Citation: Ding Jiandong, Chang Heming, Ding Yong. New technology for heavy metals recovery from electroplating sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1969-1973.
shu

电镀污泥回收重金属的新工艺

  • 1.

    南通大学化学化工学院,南通 226019

  • 基金项目:

    南通大学自然科学基金资助项目(10Z016)

  • 中图分类号: X705

New technology for heavy metals recovery from electroplating sludge

  • 1.

    School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China

  • Fund Project:

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  • 摘要: 合理、经济地处理混合电镀污泥,回收其中有价值的金属具有重要意义。以不同的酸作为浸出剂对电镀污泥中的金属进行了浸出效果实验。结果表明,在相同条件下,各酸的浸出效果顺序为:硫酸>盐酸>王水>硝酸;液体水与固体电镀污泥比为3,干污泥为5 g,硫酸加入量为15 mL,时间1 h条件下,混合电镀污泥中金属铜锌的浸出率最大,达到97.38%。分别采用铁和铁锰合金还原剂常温还原低熔点重金属离子铜、锌,浸出液中99%以上含量的铜、锌沉淀,使低熔点重金属与黑色金属铁、锰、铬有效分离。低熔点混合重金属可以用来做铜合金添加剂使用,最后沉淀的混合黑色金属氢氧化物处理后可以用来做炼钢合金添加剂使用。
    Abstract: It is very significant that the valuable metals are recovered from electroplating sludge by reasonable and economic methods. The efficiency of multiple heavy metals extraction from hazardous electroplating sludge via different acid leaching was studied. Under the same conditions, the results showed that the best effect of leaching acid was sulfuric acid, then hydrochloric acid, aqua, nitrate. When 5 g of dried sludge at a 3:1 water/solid ratio, was mixed with 15 mL H2SO4 for 1 h, the highest leaching efficiency of Cu and Zn from electroplating sludge reached to 97.38%. Fe and Fe-Mn alloy were used as reducing agents to reduce low melting point heavy metal ions of Cu and Zn, at room temperature. The results indicated that more than 99% of Cu and Zn in leaching solution were precipitated. Cu and Zn were separated effectively from Fe, Mn and Cr. The low melting point metals can be used as copper alloy additive; the mixed hydroxides of Fe, Mn and Cr can be used as steel smelting additive after reasonable treatment.
  • [1] 曾彩明,王德汉,谢国樑,等.不同预处理对电镀污泥电动过程的影响. 环境工程学报, 2008,2(1):120-125 Zeng C. M., Wang D. H., Xie G. L., et al. Effect of different pretreatments on electro kinetic processes of electroplating sludge. Chinese Journal of Environmental Engineering, 2008,2(1):120-125 (in Chinese)
    [2] Rossini G., Bernardes A. M. Galvanic sludge metals recovery by pyrometallurgical and hydrometallurgical treatment. Journal of Hazardous Materials, 2006, 131(1-3): 210-216
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    [5] 李盼盼,彭昌盛. 电镀污泥中铜和镍的回收工艺研究——污泥的酸浸出工艺.电镀与精饰, 2010,3(1):37-40 Li P. P., Peng C. S. Recovery technology of copper and nickel from electroplating sludge—Acid-leaching process of electroplating sludge. Plating and Finishing, 2010,3(1):37-40 (in Chinese)
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出版历程
  • 收稿日期:  2012-05-11
  • 刊出日期:  2013-05-22
丁建东, 唱鹤鸣, 丁勇. 电镀污泥回收重金属的新工艺[J]. 环境工程学报, 2013, 7(5): 1969-1973.
引用本文: 丁建东, 唱鹤鸣, 丁勇. 电镀污泥回收重金属的新工艺[J]. 环境工程学报, 2013, 7(5): 1969-1973.
shu
Ding Jiandong, Chang Heming, Ding Yong. New technology for heavy metals recovery from electroplating sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1969-1973.
Citation: Ding Jiandong, Chang Heming, Ding Yong. New technology for heavy metals recovery from electroplating sludge[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1969-1973.
shu

电镀污泥回收重金属的新工艺

  • 1. 南通大学化学化工学院,南通 226019
  • 收稿日期:  2012-05-11
基金项目:

南通大学自然科学基金资助项目(10Z016)

摘要: 合理、经济地处理混合电镀污泥,回收其中有价值的金属具有重要意义。以不同的酸作为浸出剂对电镀污泥中的金属进行了浸出效果实验。结果表明,在相同条件下,各酸的浸出效果顺序为:硫酸>盐酸>王水>硝酸;液体水与固体电镀污泥比为3,干污泥为5 g,硫酸加入量为15 mL,时间1 h条件下,混合电镀污泥中金属铜锌的浸出率最大,达到97.38%。分别采用铁和铁锰合金还原剂常温还原低熔点重金属离子铜、锌,浸出液中99%以上含量的铜、锌沉淀,使低熔点重金属与黑色金属铁、锰、铬有效分离。低熔点混合重金属可以用来做铜合金添加剂使用,最后沉淀的混合黑色金属氢氧化物处理后可以用来做炼钢合金添加剂使用。

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