Study on characteristics of palygorskite in purification of petroleum contaminated groundwater

摘要：

The natural palygorskite modified was as reactive media of PRB. Based on the investigation of effect of specific hydrochemical factors, such as Fe2+, Fe3+, Mn2+, NO3-, SO42- etc., on remediation efficiency of petroleum contaminated groundwater, the dynamics, isothermal adsorption model and characterization of reactive media were studied. The results showed that the effect of purifying TPH with the palygorskite modified was best when concentration of Fe2+, Mn2+ and SO42-were 0-30, 0-10 and 0-50 mg/L, respectively. The purification process of TPH was achieved quickly and the removal rate was 92.82％ in 30 minutes. The absorption kinetics was followed pseudo-second order kinetics. The adsorption process fitted the Langmuir isothermal models. The apparent maximum adsorption capacity was 2.5g/g. The characteristics of palygorskite modified were acicular or fibrous, some other crystals gathering in it, more pores, very large specific surface area;it had the advantage to remove TPH from petroleum contaminated groundwater by absorption method.

关键词： palygorskite purification petroleum contaminated groundwater characteristics

作者: ZHANG Sheng-yu ZHANG Yu-Ling SU Xiao-si SONG Fan

作者单位: College of Environment and Resources, JiLin University, Changchun, 130026 China Institute of Water Resources and Environment, JiLin University, Changchun, 130026 China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 451-454

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）