期刊
CARBOHYDRATE POLYMERS
卷 219, 期 -, 页码 1-11出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.05.021
关键词
Microbial polysaccharide; Wastewater treatment; Bio-adsorbent; Methyl violet; Salecan
资金
- National Natural Science Foundation of China [31800833]
- Zhejiang Provincial Natural Science of Foundation of China [Z19H180001]
- Wenzhou Medical University [89218028]
- Wenzhou Institute of Biomaterials Engineering [WIBEZD2017001-03]
Wastewater treatment materials that combine high decontamination performance, ease of use and economic production are highly desirable for practical applications. Herein, we fabricated a low-cost and recyclable bio-adsorbent based on a microbial polysaccharide (salecan) for efficient removal of methyl violet (MV) from wastewater. The success fabrication and the properties (such as thermal stability, microarchitecture, mechanical strength and water uptake) of the adsorbent had been investigated, and the hydrogels were found to have tunable properties by simple adjusting the salecan dose in hydrogel composition. Adsorption data displayed that the adsorption of MV followed the pseudo second-order kinetic model (R-2 = 0.99015) and Freundlich isotherm model (R-2 = 0.99221) with a maximum adsorption capacity of 178.9 mg/g. Moreover, salecan-based hydrogels showed a good reversibility in adsorption-desorption cycles. These features indicate that salecan-based bio-adsorbent may be a promising device for dye removal from dyeing waste water.
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