Removal of chromium(VI) from aqueous solution by carbon waste from thermal power plant

被引：6

作者：

Nagpal, Garima ^{[1
]}

Bhattacharya, A. ^{[2
]}

Singh, N. B. ^{[1
]}

机构：

[1] Sharda Univ, Res & Technol Dev Ctr, Greater Noida, India

[2] Univ Petr & Energy Studies, Dept Chem, Dehra Dun 248007, Uttar Pradesh, India

来源：

DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 21期

关键词：

SEM; Carbon waste; Chromium(VI); FTIR; Kinetics; Isotherms; ACTIVATED CARBON; ADSORPTION; KINETICS; CR(VI); SAWDUST; POLYACRYLAMIDE; ISOTHERM; SORPTION;

D O I：

10.1080/19443994.2015.1032360

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Carbon waste was used as an adsorbent for the removal of Cr(VI) from aqueous solution of K2Cr2O7. The experiments were carried out at different doses of adsorbent (0.1-0.8g), pH (1-7), and initial metal ion concentration (1-30mg/L). Different adsorption isotherms such as Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich were tested. Langmuir adsorption isotherm was found to have highest regression value and hence the best-fit. Pseudo-second-order fitted best the kinetic data. Further, it was found that 92% chromium(VI) removal is possible at pH 2.0, adsorbent dose 0.6g/50ml, metal ion concentration 20mg/L, and time 120 min. Thermodynamic parameters showed that the sorption process is endothermic and spontaneous in nature.

引用

页码：9765 / 9775

页数：11

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