Grewia spp. Biopolymer as Low-Cost Biosorbent for Hexavalent Chromium Removal

被引：3
|
作者：
Kofa, G. P. [1 ]
Ndongo, G. R. Nkoue [2 ]
Ngounou, M. B. Kameni [1 ]
Nsoe, M. N. [1 ]
Amba, E. V. [1 ]
Koungou, S. Ndi [1 ]
机构：
[1] Univ Ngaoundere, ENSAI, Dept Proc Engn, Water Treatment & Filtrat Res Chem Engn Grp, POB 455, Ngaoundere, Cameroon
[2] Univ Douala, Fac Sci, POB 24157, Douala, Cameroon
来源：
JOURNAL OF CHEMISTRY | 2019年 / 2019卷
关键词：
AQUEOUS-SOLUTION; BIOSORPTION;
D O I：
10.1155/2019/6505731
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, Grewia spp. biopolymer was utilized as a biosorbent for elimination of hexavalent chromium from water. Fourier-transform infrared spectrometry (FTIR) and X-ray diffraction (XRD) were performed for characterization of the biosorbent. Experiments were conducted in a batch mode at room temperature (25 +/- 2 degrees C) and agitation speed of 100rpm to determine the influence of biosorbent dose, contact time, Cr(VI) concentration, and initial solution pH. It was found that equilibrium was attained in 50min. A pseudo-first-order model suited well than a pseudo-second-order model. Biosorption capacity of Grewia spp. biopolymer increased with increase in concentration and depended on the solution pH. Langmuir and Freundlich models described experimental data very well. These findings showed that Grewia spp. biopolymer can serve as a biosorbent for elimination of Cr(VI) from water.
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收藏
页数：7
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