羟肟酸类选矿捕收剂的生物降解性评价

Evaluation of Biodegradability of Beneficiation Collector Hydroxamic Acid

利用摇床法对苯甲羟肟酸、水杨羟肟酸、N-羟基邻苯二甲酰亚胺和H205四种羟肟酸类选矿捕收剂的生物降解性进行评价,实验结果表明,四种羟肟酸20d的生物降解率分别为64.85%、60.75%、63.18%、9.41%。依据评价标准,前三种羟肟酸属于易降解选矿药剂,而H205属于难降解有机物。

Shaking table process is applied to evaluating biodegradability of beneficiation collector： benzyl hydroxamic acid,salicyl hydroxamic acid,N-hydroxy phthalimide and H205.The results show that the biodegradability rate of the four kinds of hydroxamic acid in twenty days is 64.85%,60.75%,63.18% and 9.41%,respectively.According to the standards,the first three kinds of hydroxamic acid are easily biodegradable,while H205is hardly biodegradable.