硅酸镁的改性及其对稠油污水中有机物的吸附

发布时间：2018-11-19 14:08

【摘要】：采用焙烧酸处理成功制备了酸化硅酸镁吸附材料,通过傅里叶红外(FT-IR)、扫描电镜(SEM)和全自动化表面积和孔结构分析仪等手段对样品结构进行表征;研究了酸化硅酸镁的吸附性能,考察了吸附剂加量、pH值、温度和时间等因素对稠油污水中有机物的吸附影响。结果表明,酸化处理改变了硅酸镁表面晶体结构,微孔数量与比表面积增加;强化了硅酸镁对稠油污水的有机物吸附,将同浓度的COD去除率从52.94%提高到76.12%;吸附剂的吸附能力随温度的升高而降低;强酸或强碱性条件下有利于对稠油污水中有机物的吸附;吸附0.5h,COD去除率可达65.58%。
[Abstract]:Acidified magnesium silicate adsorption materials were successfully prepared by roasting acid treatment. The structure of the samples was characterized by Fourier transform infrared (FT-IR), scanning electron microscopy (SEM) and fully automated surface area and pore structure analyzer. The adsorption properties of acidified magnesium silicate were studied. The effects of the amount of adsorbent, pH value, temperature and time on the adsorption of organic matter in heavy oil wastewater were investigated. The results showed that the crystal structure of magnesium silicate surface was changed by acidification treatment, the number of micropores and the specific surface area were increased, and the adsorption of organic matter on heavy oil wastewater was enhanced, and the removal rate of COD at the same concentration was increased from 52.94% to 76.12%. The adsorption ability of adsorbent decreases with the increase of temperature, the adsorption rate of organic matter in heavy oil wastewater is favorable under the condition of strong acid or strong alkalinity, and the removal rate of COD can reach 65.58 at 0.5 h.
【作者单位】：西南石油大学化学化工学院;
【基金】：“十三五”国家科技重大专项资助项目(2016ZX05040-003)
【分类号】：X741

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