Based on the shaking cultivation method, the mixed bacteria were used to study the biodegradability of hydroxamic acid collectors. The biodegradation rates of salicylhydroxamic acid, benzo- hydroxamic acid, N-hydroxy phthalimide and H205 on the seventh day are 93.3% , 86.9% , 86.5% and 21.9% respectively. According to GB/T 15818 -2006, the first three collectors are easy primary biode- gradable organic compounds, and H205 is refractory organic matter. The biodegradation process of hydroxamic acid collectors follows the first-order reaction kine...
