Chestnut oak shells activated carbon: Preparation, characterization and application for Cr (VI) removal from dilute aqueous solutions

被引：163

作者：

Niazi, Leila ^{[1
]}

Lashanizadegan, Asghar ^{[1
]}

Sharififard, Hakimeh ^{[1
]}

机构：

[1] Univ Yasuj, Dept Chem Engn, Fac Engn, Yasuj 7591874831, Iran

来源：

JOURNAL OF CLEANER PRODUCTION | 2018年 / 185卷

关键词：

Adsorption; Activated carbon; Chestnut; Chromium (VI); HEXAVALENT CHROMIUM REMOVAL; LOW-COST ADSORBENT; WASTE-WATER; SURFACE-AREA; PROCESS OPTIMIZATION; CHEMICAL ACTIVATION; AGRICULTURAL WASTE; BATCH ADSORPTION; CR(VI) REMOVAL; ZN(II) IONS;

D O I：

10.1016/j.jclepro.2018.03.026

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this research, chestnut shells were used for activated carbon preparation by way of chemical activation with H3PO4 in a nitrogen atmosphere. The chemical and physical characteristics of activated carbon were determined using FTIR, BET, SEM, pH(PZC) measurement, and Bohm titration methods and the results were compared with those of the chestnut shell used as raw material. The prepared carbon was applied as an adsorbent for Cr (VI) removal via a batch adsorption process. The effects of process parameters including initial pH of solution, agitation speed and, adsorbent dosage on Cr (VI) removal efficiency were investigated. Kinetics analysis showed that the chemical reaction is the rate-controlling step. Equilibrium experiments revealed that the maximum adsorption abilities of the chestnut shell and prepared carbon were 4.44 mg g(-1) and 33 mg g(-1), respectively. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：554 / 561

页数：8

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