交联壳聚糖微球的制备及其对水中芳香族羧基化合物的吸附性能研究

黄浦; 施文健; 潘旻旻; 彭阳; 闻海峰

doi:10.3969/j.issn.2096-1553.2018.06.002

November 2018

Article Contents

HUANG Pu, SHI Wenjian, PAN Minmin, et al. Research on preparation of crosslinked chitosan microspheres and its adsorption properties for aromatic carboxyl compounds in water[J]. Journal of Light Industry, 2018, 33(6): 8-18. doi: 10.3969/j.issn.2096-1553.2018.06.002

Citation: HUANG Pu, SHI Wenjian, PAN Minmin, et al. Research on preparation of crosslinked chitosan microspheres and its adsorption properties for aromatic carboxyl compounds in water[J]. Journal of Light Industry, 2018, 33(6): 8-18. doi: 10.3969/j.issn.2096-1553.2018.06.002 shu

Research on preparation of crosslinked chitosan microspheres and its adsorption properties for aromatic carboxyl compounds in water

School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China

Received Date: 2018-07-19

Abstract

Using chitosan as raw material, liquid paraffin as dispersant, formaldehyde as pre-crosslinking agent and epichlorohydrin as crosslinking agent, crosslinked chitosan microspheres were prepared by reversed-phase suspension method. The adsorption properties of crosslinked chitosan microspheres on aromatics carboxy compounds in water were studied. The results showed that it had fast adsorption rate and large adsorption capacity,the saturated adsorption capacity of crosslinked chitosan microspheres for 2-hydroxy-3-naphthoic acid, α-naphthoic acid and benzoic acid were 702.0 mg·g^-1, 320.1 mg·g^-1, 176.3 mg·g^-1 at the pH value of 3.5 and 288 K, respectively. The adsorption process conformed to the Lagergren-second-order kinetic equation, and the adsorption isotherm model conformed to the Langmuir isotherm adsorption equation, which was mainly monolayer adsorption. The adsorption process was a spontaneous, exothermic and entropic reduction process with physical adsorption and chemical action. The crosslinked chitosan microspheres had good recycling ability. After 8 cycles of regeneration, the adsorption capacity could still be stabilized above 97%.
- crosslinked chitosan microsphere,
- aromatic carboxyl compounds,
- reversed-phase suspension method,
- adsorption property
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沈阳化工大学材料科学与工程学院沈阳 110142

Research on preparation of crosslinked chitosan microspheres and its adsorption properties for aromatic carboxyl compounds in water

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