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Corn cob modified by lauric acid and ethanediol for emulsified oil adsorption

Journal of Central South University 2015年第6期22卷 2096-2105页

作者：季振林海陈月芳董颖博 Muhammad Imran Civil and Environmental Engineering School University of Science and Technology Beijing

Corn cob is a naturally renewable material with developed micropore and hydrophobic characteristics, which enables it to show good oil adsorption capacity. In order to improve oil adsorption capacity, corn cob was modified with lauric acid and ethanediol. The structure of raw and modified corn cob was investigated using Fourier transform infrared(FTIR) spectroscopy, scanning electron microscopy(SEM), Brunauer-Emmett-Teller(BET) method, thermogravimetric analysis(TGA) and Ze Ta potential analyzer. The effects of p H level, adsorption time, adsorbent dosage, and initial oil concentration on oil absorbency of corn cob were studied. The results indicate that the modification significantly improved the lipophilicity of corn cob, making the modified corn cob with much better adsorption capacity on oil absorbency. Compared with raw corn cob, the maximum saturated adsorption capacity of modified corn cob is 16.52 mg/g at p H 5, and the increasing percentage is found to be 141%, which indicates that the modification causes a better adsorption capacity for oil removal. In addition, due to high oil adsorption capacity, affordable price and low secondary pollution, the modified corn cob could be considered promising alternative for the traditional oil adsorbent to clean up the emulsified oily water.

关键词： emulsified oil corn cob lauric acid ethanediol lipophilicity

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维普期刊数据库

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EXPERIMENTAL STUDY ON ABSORPTION OF oil BY SEDIMENT IN WATER

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Journal of Hydrodynamics 1997年第2期9卷 24-30页

作者： Zhao, Wenqian Li, Chongming Luo, Lin Sichuan Univ Chengdu China

The absorption behaviour of emulsified oil by sediment (include loess) is studied by experiment. The absorption equation and the relations of absorption capacity with sediment concentration, grain size, salt concentration and temperature are analyzed. The absorbing reaction kinetics process is also studied. The absorption of emulsified oil by sediment in rivers is agreed with the Langmuir-Freundlich absorption equation. Experimental data shows that the larger the equilibrium oil concentration and the salt concentration , the more the absorption capacity. The absorption capacity increases immensely with grain size and temperature reduction.

关键词： absorption emulsified oil oil pollution

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MATHEMATIC MODEL AND EXPERIMENTAL STUDY ON ADSORBING oil BY SEDIMENT

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International Journal of Sediment Research 1998年第3期 5-13页

作者： Wenqian ZHAO 1 and Xiaobo CAO 2 and Qinsheng HUANG 3

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关键词： Adsorption characteristics emulsified oil oil pollution

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