Etherifying agent, 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHPTA) was modified by grafting on cellulose to make quaternary ammonium cationic cellulose (QACC) with 2.01% nitrogen content and a degree of substitution of 0.289. The experiment results showed that at 318 K, the adsorption capacities of QACC on monochloroacetic acid (MCAA), dichloroacetic acid and trichloroacetic acid (TCAA) were 1.80, 1.87 and 2.01 mmol/g, respectively. The adsorption process could be modeled by pseudo second-order kinetics very well. The adsorption rate constant increased with temperature, and the adsorption pattern fitted Langmuir isotherms, which was monomolecular layer absorption. ΔH of the three chlorinated acetic acids were all above zero, and ΔS of them were above zero too. At 298 K, ΔG of the adsorption processes were below zero. These experiment results showed that it was main chemical adsorption accompanied by physical adsorption.
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October 28 2013
Adsorption of chlorinated acetic acids by quaternary ammonium cationic cellulose Available to Purchase
Wenjian Shi;
1College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
E-mail: [email protected]
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Haixin Gu;
Haixin Gu
1College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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Xuan Chen;
Xuan Chen
1College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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Yuanxing Huang;
Yuanxing Huang
1College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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Wei Wu;
Wei Wu
1College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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Jingzhi Wang
Jingzhi Wang
1College of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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Water Supply (2014) 14 (2): 321–328.
Article history
Received:
June 05 2013
Accepted:
October 14 2013
Citation
Wenjian Shi, Haixin Gu, Xuan Chen, Yuanxing Huang, Wei Wu, Jingzhi Wang; Adsorption of chlorinated acetic acids by quaternary ammonium cationic cellulose. Water Supply 1 April 2014; 14 (2): 321–328. doi: https://doi.org/10.2166/ws.2013.208
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