摘要
应用聚乙烯醇(PVA)为载体固定化混合细菌细胞以PVA浓度为12％(w/v),细胞浓度为2％(w/v)最好,pH对固定化操作过程影响不大。固定化细胞对印染废水的脱色活性与其自然细胞相似,最适温度为30—40℃,最适pH为7.0;在pH 6.0—8.0温度25—40℃范围内都具有较高的脱色活性,以及好的热稳定性;在连续一个月的印染废水脱色试验中,停留时间小于3.0h,脱色率均可维持在70—80％。
In preparing mixed decolorizing bacterial cells immobilized in polyvinyl alcohol (PVA) for decolorizational treatment of dyeing waste water, the optimum concentrations of PVA and cells were 12% (w/v) and 2% (w/v), respectively, pH Value had little influence on the cell immobilization course. The immobilized cells of mixed decolorizing bacteria were similar to the native cells for their function of decolorization of dyeing vvastewater. The optimum temperature and pH were 30-40℃ and 7.0, respectively. The highest decolorizing activity and thermal stability were observed at pH ranging from 6.0 to 8.0 and temperature ranging from 25℃ to 40℃ . In the course of one month continuous decolorizational treatment of dyeing wastewater, the retention time of wastewater was found to be less than 3.0 hours and decolorization rate reached 70-80%.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1992年第1期2-6,共5页
Environmental Science
基金
国家自然科学基金
关键词
PVA
固定化细胞
印染废水
处理
mixed decolorizing bacteria, pol-y vinylalcohol (PVA), immobilized cells, decolori-zation or dyeing wastewater.
