不同浸出毒性鉴别方法对铜基催化剂废渣重金属浸出的影响

摘要

The authors compared identification standard for hazardous wastes-extraction procedure toxicity of China and Japan, and toxicity characteristic leaching procedure of United States to evaluate which is better to identify toxicity characteristic of typical copper catalyst of China. They also studied leaching characteristic of metals in copper catalyst under different pH values. The results showed that pH was a major controlling factor in metal leachability. The metals exhibited a marked increase in leachability at low, while relatively low leachability of these metals were observed at neutral conditions.%以铜基催化剂废渣作为研究对象，考察中国、日本和美国的3种浸出毒性鉴别试验方法对铜基催化剂废渣浸出毒性鉴别的影响，研究了pH值对其中重金属浸出毒性的影响。结果表明：铜基催化剂废渣中重金属的浸出主要受pH值影响，在强酸条件下的浸出质量浓度高，而在中性条件下浸出质量浓度低。