菌株HP3降解溴胺酸特性研究

Study of biodegradation characters of HP3 to 1-amino-4-bromoanthraquinone-2-sulfonic acid

从溴胺酸生产车间的活性污泥中筛选到以溴胺酸为惟一碳、氮源且对溴胺酸有较高降解能力的菌株 ,暂命名为HP3.在良好的通气条件下 ,该菌株降解溴胺酸的最佳条件为 30℃、pH7.0 7.5 .溴胺酸浓度为 10 0 0mg/L时 ,4d内可被完全降解 .葡萄糖、牛肉膏、蛋白胨能不同程度地提高菌体降解溴胺酸的速度 .在所试的含氮无机物中 ,(NH4 ) 2 SO4 和NH4 NO3 能加快菌体降解溴胺酸的速度 ,NH4 Cl则起反作用 .NaCl的存在抑制菌体的生长并降低溴胺酸降解速度 .菌体降解溴胺酸的产物之一为邻苯二甲酸 ,它可被菌体进一步代谢 .

Strain HP3 screened from active sludge can use 1 amino 4 bromoanthraquinone 2 sulfonic acid(ABAS) as the sole carbon and nitrogen source and highly degrade ABAS. The optimum pH and temperature are 7.0~7.5 and 30℃ respectively, and the efficient supply of oxygen is needed. In this case, ABAS of 1 000 mg/L was completely degraded after reacting for 4 days. Different organic compounds speed up the degradation of ABAS by HP3. Different inorganic compounds containing nitrogen, such as (NH 4) 2SO 4 and NH 4NO 3, can speed up the degradation of ABAS. However, NH 4Cl inhibits the degradation. NaCl can inhibit the growth of HP3 and slow the degradation of ABAS. ABAS degraded by HP3 changes into o benzenedicarboxylic acid(OBDA) and a certain compound. The former is further degraded.