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Preparation and characterization of a novel adsorbent for removing lipophilic organic from water

Science china {1. 2005年第6期48卷 600-604页

作者： liu huijuan1. dai ruihua1. qu jiuhui1.& ru jia1.2.1. state key laboratory of environmental aquatic chemistry, {1. {2. for eco-environmental Sciences, chinese Academy of Sciences, beijing 1.0085, china 2. Graduate School of the chinese Academy of Sciences, beijing 1.0039, china 1. state {1. laboratory of environmental aquatic chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences 100085 Beijing China 2. Graduate School of the chinese Academy of Sciences 100039 Beijing China

A novel composite adsorbent containing a kind of lipid-triolein is studied. The ad-sorbent is prepared by embedding triolein into cellulose acetate (CA) sphere. The preparation method, the physical-chemical properties of the adsorbent and the removal efficiency of two or-ganochlorinated pesticides are studied. The adsorbent is stable in water and no triolein leaks into water for 465 h soaking. The adsorbent has high adsorption capacity for organochlorinated pes-ticides such as dieldrin and aldrin. The results suggest that triolein-containing adsorbent could serve as a good adsorbent for lipophilic organic pollutants. The adsorption rate for lipophilic pol-lutants is very fast and has relation with the logKow of the compounds.

关键词： triolein, cellulose acetate, adsorbent, lipophilic organic, drinking water.

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Characterization and adsorption behavior of a novel triolein-embedded activated carbon composite adsorbent

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chinese Science Bulletin 2005年第23期50卷 2788-2790页

作者： ru {1. {2. huijuan qu jiuhui WANG Aimin dai ruihua state {1. {2. of environmental aquatic chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Graduate School of chinese Academy of Sciences Beijing 100039China

A novel triolein-embedded activated carbon composite adsorbent was developed. Experiments were car-ried out in areas such as the preparation method, the char-acterization of physicochemical properties, and the adsorp-tion behavior of the composite adsorbent in removing diel-drin from aqueous solution. Results suggested that the novel composite adsorbent was composed of the supporting acti-vated carbon and the surrounding triolein-embedded cellu-lose acetate membrane. The adsorbent was stable in water, for no triolein leakage was detected after soaking the ad-sorbent for five weeks. The adsorbent had good adsorption capability to dieldrin, which was indicated by a residual di-eldrin concentration of 0.2.4 μg·L?1. The removal efficiency of the composite adsorbent was higher than the traditional activated carbon adsorbent.

关键词：饮用水处理活性碳吸附剂三油精持久性有机污染物吸附行为

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