Environmental & Analytical Toxicology

ISSN: 2161-0525

Open Access

Yang Hang


  • Research Article
    Study on the Effect of Modified Walnut Shell Filter on Oil Removal from Oilfield

    Author(s): Yang Hang, Wang Xiujun, Jing Bo, Guo Shuya and Yin XianqingYang Hang, Wang Xiujun, Jing Bo, Guo Shuya and Yin Xianqing

    Walnut shell filter materials has strong adsorption and contaminants interception ability, anti-oil immersion, high hardness, good wear resistance and stable chemical properties, its surface was easily polluted by the absorbed crude oil in oily sewage to reduce its filtering and backwashing effect. The surface modification of the walnut shell was the introduction of hydrophilic groups to enhance its hydrophilic oleophobic property; Used different ratio of sulfite to boil the walnut shell at a certain temperature to make a modification on the hydrophilicity of walnut shell surface, the modified filter materials with varying degree of surface modification was obtained. Measured the contact angle between walnut shell and water, the wetting performance was significantly improved, the contact angle was decreased from 95° to 36.75°, the surface properties were changed from lipophili.. Read More»


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