摘要
目的回收处理废水中的银离子。方法采用杂多酸作光催化剂在紫外光照射下回收废水中的重金属银离子。探讨异丙醇浓度、磷钨杂多酸浓度、光照时间、银离子浓度等因素对光催化还原废水中银离子回收率的影响。结果在最优化实验条件下,杂多酸光催化还原回收处理废水中银离子的回收率达99.63%。结论可将杂多酸作光催化还原剂应用于处理和回收废水中的银离子。
[ Objective ] To carry out the disposal and recovery of silver ions in waste water. [ Methods ] By using heteropoly acid as pholocatalyst, silver ions were recovered from waste water under ultraviolet radiation. The influences of isopropyl alcohol concentra-tion, the concentration of phosphorus tungsten heteropoly acid, illumination time, and concentration of silver ions on the recovery rate of silver ions in waste water by photocatalytic reduction were studied. [ Results ] Under the optimized experiment conditions, the recovery rate of silver ions in waste water by photocatalytic reduction with heteropoly acid reached 99.63%. [ Conclusion] The het-eropoly acid can be used as the photocatalyst in disposal and recovery of silver ions in waste water.
出处
《职业与健康》
CAS
2014年第1期52-54,57,共4页
Occupation and Health
关键词
杂多酸
银
光催化
废水
Heteropoly acid
Silver
Photocatalysis
Waste water
