JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2014, Vol. 44 ›› Issue (5): 65-71.doi: 10.6040/j.issn.1672-3961.0.2013.329

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The preparation of a new kind of modified chitosan material and its removing mechanism of tetracycline from waste water

ZHAO Wenjie1, SUN Xuefei1, DING Ke2, WANG Shuguang1   

  1. 1. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China;
    2. Linyi Environmental Monitoring Institute, Linyi 276001, Shandong, China
  • Received:2013-11-11 Revised:2014-05-16 Published:2013-11-11

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Abstract: Chitosan was cross-linked and loaded by MnO2 to improve the adsorption capacity of traditional chitosan material. Scanning electron microscopy(SEM)was used to characterize the materials. The effects of loading MnO2, temperature, pH and ion concentration on the adsorption of TC were investigated comprehensively. When loading rate of MnO2 was 0.344 mg/g, T=318 K, pH=4～11, and the ion concentration was 0, the adsorption efficiency was the best. Pseudo-second-order kinetic model and Freundlich adsorption isotherm fitted well to the adsorption process In addition, the adsorption process was spontaneous and endothermic. The results also showed that the new chitosan material performed well after being filled in column by continuous operation.

Key words: cross-linked, manganese (IV) oxide, chitosan, adsorption, tetracycline, loading

CLC Number: 

  • X52
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