文献类型：期刊文献

英文题名：Effective removal of Cr(VI) from aqueous solution using modified orange peel powder: Equilibrium and kinetic study

作者：Liang, L.P.[1]; Wang, Q.[1]; Xi, F.F.[1]; Tan, W.S.[1]; Zhang, Y.T.[1]; Cheng, L.B.[1]; Wu, Q.[1]; Xue, Y.Y.[1]; Meng, X.[2]

机构：[1] School of Civil Engineering, College of Life Science, College of Textile and Garment, Shaoxing University, Shaoxing, 312000, China; [2] Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing University, Shaoxing, 312000, China

年份：2020

卷号：19

期号：4

起止页码：1391

外文期刊名：Nature Environment and Pollution Technology

收录：EI(收录号：20205309698788)、Scopus(收录号：2-s2.0-85098133871)

基金：The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Grant No. 41807468), Zhejiang Provincial Natural Science Foundation of China (Grant No. LY18E080018), Shaoxing Public Welfare Project (Grant No. 2017B70042), State Key Laboratory of Pollution Control and Resource Reuse Foundation, (Grant No. PCRRF18021).

语种：英文

外文关键词：Adsorption - Adsorption isotherms - Citrus fruits - Integral equations - Kinetic theory - Kinetics

外文摘要：A new adsorbent modified from orange peel (OP) was successfully synthesized by ethylenediamine crosslinking method to remove Cr(VI) from wastewater. The modified orange peel powder (MOPP) was investigated in a batch adsorption system, including both equilibrium adsorption isotherms and kinetics. Effects of several factors, including adsorbent dose, initial pH and Cr(VI) concentration were studied. The data indicated that the pH was not an essential factor that affected the adsorption process, it has a wide pH range from 4 to 10, and high adsorbent dose and lower Cr(VI) concentration could increase the Cr(VI) removal efficiency. Equilibrium data were analysed using the Langmuir, Freundlich and Temkin isotherm models and found to be well represented by the Langmuir isotherm model. The maximum capacity (qmax) obtained from Langmuir model was 52.08 mg/g at pH 6.0. The kinetics of adsorption followed the pseudo-second-order kinetic equation. The results suggest that MOPP is an inexpensive and efficient adsorbent for removing Cr(VI) from aqueous solution. ? 2020 Technoscience Publications. All rights reserved.