阻垢剂聚环氧琥珀酸生物降解性能研究

Study on Biodegradability of Polyepoxysuccinic Acid

研究了聚环氧琥珀酸(PESA)生物降解性能及影响生物降解的因素.影响生物降解的因素有:营养盐的氮磷比例,聚环氧琥珀酸的浓度,降解时间,降解温度,溶解氧等.当C∶N∶P为100∶20∶1时,聚环氧琥珀酸浓度为5 mg.L-1,温度为20℃,溶解氧足量,聚环氧琥珀酸28 d的降解率为73.7%.对照OECD301B标准,聚环氧琥珀酸属于易生物降解物质.

The biodegradability performance and several influencing factors of polyepoxysuccinic acid were studied. The influencing factors are the proportion of nitrogen and phosphorus, concentration of PESA ,the time and temperature of biodegradability, oxygen of solution . The degradation ratio reaches to 73.7% under C： N： P 100： 20： 1, temperature 20 ℃, time 28 d, enough oxygen of solution,and 5 mg · L^-1 of PESA. The biodegradability of polyepoxysuccinic acid is easier than else according to OECD301B standard.