Study on Orthogonal Experiment and Affecting Factors on Pb2+ Adsorption by Saccharomyces Cerevisiae

摘要：

Dynamic adsorption of dead-immobilized Saccharomyces cerevisiae on Pb2+ in continuous-upflow reactor was studied through orthogonal experiment to investigate the optimal operating parameters of pH value、flow rate、adsorbent concentration as well as affect factors, such as yeast diameter, initial Pb2+ concentration and initial pH value. It showed that the optimal conditions were ofpH6、flow rate 5mL/min、adsorbent concentration 80 g/L. And the optimal diameter was 2.5mm,initial Pb2+ concentration 20mg/L, optimal pH value 6. In the early 40 minutes of the experiment, Ct/C increased fast, which indicated that a majority of, up to 92％ of Pb2+ was adsorbed. The adsorption process by dead-immobilized discarded Saccharomyces cerevisiae in continuous-upflow reactor was very fast. It was feasible to wipe off Pb2+ in wastewater by continuous-upflow reactor, which could guide future researchers and establish foundation for its industrialization.

关键词： Dead-immobilized Saccharomyces cerevisiae Pb2+ continuous-upflow reactor orthogonal experiment affect factors

作者: ZHANG Ying FAN Chunhui

作者单位: School of Resource & Environment,Northeast Agricultural University,Harbin,150030,PRC

会议类型: 国际会议

会议名称: 2007 International Conference on Agriculture Engineering(2007年农业工程国际会议)

会议地点: 河北保定

会议语种:英文

页码: 675-680

在线出版日期: 2007-10-20（万方平台首次上网日期，不代表论文的发表时间）