摘要
以酿酒酵母纳米Fe_(3)O_(4)复合材料为吸附材料,以去除率为响应值,对含铅工业废水进行铅去除效果研究。通过单因素实验和响应面法实验相结合对酿酒酵母纳米Fe_(3)O_(4)复合材料的铅吸附效果进行研究。单因素实验结果表明pH值为6,铅浓度为10 mg/L,投加量为140颗,温度为30℃,转速为200 r/min时酿酒酵母纳米Fe_(3)O_(4)复合材料对铅的去除效果较好。在单因素实验,选取对铅去除影响较大的pH值、投加量和温度三个因素,以铅的去除率为响应值,采用Box-Behnken响应面分析法(BBD)探讨这3种因素对铅去除率的影响以及各个因素之间的交互作用。结果表明,酿酒酵母纳米Fe_(3)O_(4)复合材料最佳去除铅的工艺条件为pH值为6,投加量为140颗,温度为33.5℃,该条件下酿酒酵母纳米Fe_(3)O_(4)复合材料对小于10 mg/L的铅废水中铅的去除率大于92.3%,达到污水排放标准。
Using Saccharomyces cerevisiae nanoFe_(3)O_(4) composites as adsorption material and removal rate as response value,the lead removal efficiency of lead-containing industrial waste-water was studied.The lead adsorption effect of Saccharomyces cerevisiae nanoFe_(3)O_(4) composites was studied by single factor experiment and response surface method.The results of single factor experiment showed that the removal effect of lead in Saccharomyces cerevisiae nanoFe_(3)O_(4) composites was better when pH was 6,lead concentration was 10 mg/L,dosage was 140,temperature was 30℃and rotating speed was 200 r/min.PH,dosage and temperature,which had great influence on lead removal,were selected as response value.Box-Behnken response surface analysis(BBD)was used to explore the effects of these three factors on lead removal rate and the interaction among them.The results showed that the optimum lead removal conditions of Saccharomyces cerevisiae nanoFe_(3)O_(4) composites were as follows:pH 6,dosage 140 pieces,temperature 33.5℃.Under these conditions,the lead removal effect of Saccharomyces cerevisiae nanoFe_(3)O_(4) composites could reach 92.3%.
作者
张瑞刚
张艳芳
Zhang Ruigang;Zhang Yanfang(Department of Life Sciences,Lyuliang University,Lyuliang 033099,China)
出处
《山东化工》
CAS
2023年第4期203-207,共5页
Shandong Chemical Industry
基金
吕梁市引进高层次人才重点研发项目(2019103)
大学生创新创业项目(202110812006)
山西省应用基础研究计划(201901D211447)
山西省高等学校科技创新项目(2019L0967)。
