上海交通大学学报(英文版) ›› 2013, Vol. 18 ›› Issue (4): 500-507.doi: 10.1007/s12204-013-1426-x
QI Pei-shi* (祁佩时), LIN Na (林 娜), LIU Yun-zhi (刘云芝), ZHAO Jun-jie (赵俊杰)
出版日期:
2013-08-28
发布日期:
2013-08-12
通讯作者:
QI Pei-shi (祁佩时)
E-mail: qipeishi@163.com
QI Pei-shi* (祁佩时), LIN Na (林 娜), LIU Yun-zhi (刘云芝), ZHAO Jun-jie (赵俊杰)
Online:
2013-08-28
Published:
2013-08-12
Contact:
QI Pei-shi (祁佩时)
E-mail: qipeishi@163.com
摘要: Ecological disasters and economic losses resulting from oil spills have reminded us the necessity for finding an environmentally friendly, cost-effective, and available in large-scale materials to minimize the oil spill effects. The development of high oil/water selectivity mineral sorbent for the removal of oil from the water is of great interest for oil spill cleanup. In this work, highly oil/water selectivity sorbent of expanded perlite modified with stearic acid was prepared by solution-immersion processes, and the characterization of sorbent was analyzed by Fourier transformation infrared (FT-IR) spectroscopy technique. The optimized amount of loaded stearic acid (SA) on the expanded perlite surface was found to be 2.0%. Then the sorption characteristics of unmodified expanded perlite (UMEP) and stearic acid modified expanded perlite (SMEP) were tested. The effects of different particles size, oil/water volume ratio and sorption simulated condition were investigated. It was found that expanded perlite modified with stearic acid could adsorb selectively oil from water in oil/water system. The maximum oil/water sorption ratio of SMEP was 46, which was about 191 times that of UMEP (0.24) in studied experimental range. The FT-IR analysis demonstrated the presence of long-chain alkyl group in the SMEP samples, which played an important role in oil/water selectivity of SMEP samples. The equilibrium were tested with Langmuir and Freundlich isotherm models, and oil sorption process of SMEP showed good correlation with the Langmuir isotherm model.
中图分类号:
QI Pei-shi* (祁佩时), LIN Na (林 娜), LIU Yun-zhi (刘云芝), ZHAO Jun-jie (赵俊杰). Improvement of Oil/Water Selectivity by Stearic Acid Modified Expanded Perlite for Oil Spill Cleanup[J]. 上海交通大学学报(英文版), 2013, 18(4): 500-507.
QI Pei-shi* (祁佩时), LIN Na (林 娜), LIU Yun-zhi (刘云芝), ZHAO Jun-jie (赵俊杰). Improvement of Oil/Water Selectivity by Stearic Acid Modified Expanded Perlite for Oil Spill Cleanup[J]. Journal of shanghai Jiaotong University (Science), 2013, 18(4): 500-507.
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