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Handy purifier based on bacterial cellulose and Ca-montmorillonite composites for efficient removal of dyes and antibiotics

Author:
Hu, Ying, Chen, Chuntao, Yang, Luyu, Cui, Jian, Hao, Qingli, Sun, Dongping
Source:
Carbohydrate polymers 2019 v.222 pp. 115017
ISSN:
0144-8617
Subject:
adsorption, cellulose, methylene blue, models, porous media, raw materials, sewage treatment, sorption isotherms, tetracycline, wastewater, water purification
Abstract:
Water purification has always being an imperative but challenging issue of our times. Here, we used an organic-inorganic material, i.e. bacterial cellulose (BC) and Ca-montmorillonite (Ca-MMT) composites to treat complex wastewater. The surface and inside of the BC/Ca-MMT was a microporous structure capable of providing abundant adsorption sites. We demonstrated the BC/Ca-MMT has superior removal efficiency towards methylene blue (MB) and tetracycline (TC). Typically, the sample showed significant uptake ability towards MB and TC with uptake characteristics of pseudo-second-order model and Langmuir isotherm model. More interestingly, in MB-TC binary system, the removal of the two contaminative species was hardly affected by other coexisting components. Meanwhile, the sample was ease of regeneration and kept stable reusability through consecutive four recycles. With more virtues, such as low cost and wide range of resources of the two raw materials, the BC/Ca-MMT is expected to be a promising versatile water purifier in sewage treatment.
Agid:
6483514