期刊
CHEMICAL ENGINEERING JOURNAL
卷 230, 期 -, 页码 389-395出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2013.06.072
关键词
Adsorption; Ciprofloxacin hydrochloride; Graphene oxide; Kinetic
资金
- National Natural Science Foundation of China [20975056]
- SRF for ROCS, SEM
- Natural Science Foundation of Qingdao [12-1-4-2-23-jch]
- Science & Technology Development Program of Shandong Province [2012GSF111819]
- National Key Basic Research Development Program of China (973) [2012CB722705]
A new kind of biocomposite fibers, graphene oxide doped calcium alginate (GO/CA), was prepared by a wet spinning method. The adsorption properties of ciprofloxacin onto the GO/CA fibers were studied through investigating the effect factors such as pH, dosage, and contact time. The optimum pH of ciprofloxacin adsorbed by the GO/CA fibers is 5.9. The removal percentage of the GO/CA fibers reaches 78.9% at the adsorbent dose of 2 g/L and GO loading of 6%. The adsorption data can be fitted well by the Freundlich model. The adsorption capacity increases from 18.45 mg/g to 39.06 mg/g with increasing the graphene oxide loading in the fibers from 0% to 6% at the ciprofloxacin equilibrium concentration of 60 mg/L. The kinetic adsorption data are fitted well by the pseudo-second-order model. (C) 2013 Elsevier B.V. All rights reserved.
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