| 污泥中重金属的回收工艺研究 |
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| 引用本文： | 齐亚凤,何正艳,池汝安,余军霞.污泥中重金属的回收工艺研究[J].有色金属(冶炼部分),2011(12):5-7. |
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| 作者姓名： | 齐亚凤 何正艳 池汝安 余军霞 |
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| 作者单位： | 武汉工程大学化工与制药学院,绿色化工过程省部共建教育部重点试验室,武汉430073 |
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| 基金项目： | 教育部创新团队项目(IRT0974) |
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| 摘 要： | 研究了重金属污泥中的4种重金属离子(Cu2+、Zn2+、Pb2+、Cd2+)的回收方法,考察了酸的种类、酸浓度、温度、时间、固液比对浸出效果的影响。结果表明,4mol/L的HNO3与750℃焙烧3h后的污泥在固液比1∶20,转速600r/min,80℃下反应3h,Cu2+、Pb2+、Zn2+、Cd2+的浸出率分别为92.0%、99.5%、99.5%、99.3%。
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| 关 键 词： | 污泥 重金属 焙烧 酸浸 |
| 收稿时间： | 5/6/2011 12:00:00 AM |
Recovery of Heavy Metals from Sludge |
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| QI Ya-feng,HE Zheng-yan,CHI ru-an,YU Jun-xia.Recovery of Heavy Metals from Sludge[J].Nonferrous Metals(Extractive Metallurgy),2011(12):5-7. |
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| Authors: | QI Ya-feng HE Zheng-yan CHI ru-an YU Jun-xia |
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| Affiliation: | Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China |
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| Abstract: | The recovery of four metal ions,to be specific,Cu2+,Pb2+,Zn2+ and Cd2+ from heavy metals sludge was investigated.Effects of acid type,acid concentration,temperature,time and ratio of solid to liquid on leaching efficiency in acid leaching process were investigated.The results show that when the sludge calcined at 750 ℃ for 3 h is treated with 4 mol/L HNO3(solid-to-liquid ratio is 1∶20) at 80 ℃ for 3 h under the rotation speed of 600 r/min,the leaching rate of Cu2+,Pb2+,Zn2+ and Cd2+ is 92.0%,99.5%,99.5%,99.3%,respectively. |
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| Keywords: | Sludge Heavy metals Calcination Acid leaching |
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