Water Science and Engineering 2020, 13(1) 65-73 DOI:   https://doi.org/10.1016/j.wse.2019.12.011  ISSN: 1674-2370 CN: 32-1785/TV

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Hexavalent chromium removal
Biomass adsorbent
Pomelo peel
FeCl3-modified pomelo peel
Aquatic solution

Removal of hexavalent chromium in aquatic solutions by pomelo peel

Qiong Wang a,b,*, Cong Zhou c, Yin-jie Kuang d, Zhao-hui Jiang d, Min Yang d

a Hunan Provincial Key Laboratory of Comprehensive Utilization of Agricultural and Animal Husbandry Waste Resources, College of Urban and Environmental Sciences, Hunan University of Technology, Zhuzhou 412007, China
b Hunan Provincial Engineering Laboratory of Key Technique of Non-metallic Packaging Waste Resources Utilization, Hunan University of Technology, Zhuzhou 421007, China
c People's Government of Luohong Town, Longhui County, Shaoyang 422211, China
d School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China


This study investigated the removal of hexavalent chromium (Cr(VI)) in aqueous solutions using pomelo peel (PP) and FeCl3-modified pomelo peel (FPP) as novel biomass adsorbents. Batch adsorption experiments were performed to evaluate the effects of pH, time, temperature, initial concentration, and adsorbent dose on Cr(VI) removal by PP and FPP. The results show that the maximum adsorption capacity of Cr(VI) was 21.55 mg/g for FPP and 0.57 mg/g for PP at a pH of 2.0 and a temperature of 40 ℃. The surface shape, microstructure, and chemical composition of FPP were analyzed with scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and energy dispersive spectroscopy (EDS), and compared with those of PP. The results show that the adsorption performance of FPP was much better than that of PP, indicating that FPP can be an alternative high-efficiency adsorbent for Cr(VI) removal.

Keywords Adsorption   Hexavalent chromium removal   Biomass adsorbent   Pomelo peel   FeCl3-modified pomelo peel   Aquatic solution  
Received 2019-01-21 Revised 2019-10-08 Online: 2020-03-31 
DOI: https://doi.org/10.1016/j.wse.2019.12.011

This work was supported by the National Key Research and Development Program of China (Grant No. 2018YFD1100504) and the Natural Science Foundation of Hunan Province, China (Grant No. 2017JJ2277).

Corresponding Authors: Qiong Wang
Email: 7570534@qq.com
About author:


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