摘要
本文以六价铬电镀废水为研究对象,利用响应曲面法研究稀释度(蒸馏水和电镀废水的体积比)、pH、培养时间三因素对蜡状芽孢杆菌ZW1去除有机物效率的影响,先优化去除条件再对二次回归模型验证,结果表明:模型优化结果预测稀释度为1︰1,pH值为9,培养时间为96h,ZW1菌株去除含六价铬电镀废水CODcr的效果最佳。实测该条件下CODcr平均去除率为73.41%,与模型预测值相吻合。
In this paper, hexavalent chromium electroplating wastewaters were used as the research object. Three factors(dilution rate, pH and culture time) were used to study the efficiency of Bacillus cereus ZW1 on removing organic matter from wastewater. The removal conditions were optimized and the quadratic regression model was verified. The results were as follow. The results of model optimization showed that the ZW1 strain has the best effect on removing CODcr from electroplating wastewater with hexavalent chromium when the predicted dilution rate(volume ratio of distilled water and electroplating wastewater) was 1︰1, the pH value was 9, and the culture time was 96 h. The real average removal rate of CODcr under this condition was 73.41 %, which was consistent with the predicted value of the model.
作者
刘裕华
戴江汇
陈寿昆
陈玉华
黄静
马思鹏
尚常花
陆祖军
Liu Yuhua;Dai Jianghui;Chen Shoukun;Chen Yuhua;Huang Jing;Ma Sipeng;Shang Changhua;Lu Zujun(College of Life Science, Guangxi Normal University, Guilin 541006;Key Laboratory of Rare and Endangered Animal and Plant Ecologyand Environmental Protection, Guangxi Normal University, Guilin 541006, China)
出处
《广东化工》
CAS
2019年第15期9-12,25,共5页
Guangdong Chemical Industry
基金
广西高校中青年教师基础能力提升项目(2018KY0086)
广西师范大学校级项目博士启动基金(2017BQ015)
广西大学生创新创业训练项目(201810602265)
关键词
蜡状芽孢杆菌
响应曲面法
电镀废水
有机物
Bacillus cereus
response surface methodology
electroplating wastewater
organic matter
