ADSORPTION OF CHROMIUM-(VI) BY A LOW-COST ADSORBENT - BIOGAS RESIDUAL SLURRY

被引：280

作者：

NAMASIVAYAM, C

YAMUNA, RT

机构：

[1] Environmental Chemistry Division, Department of Environmental Sciences, Bharathiar University, Coimbatore

来源：

CHEMOSPHERE | 1995年 / 30卷 / 03期

关键词：

BIOGAS RESIDUAL SLURRY; CR (VI); ADSORPTION ISOTHERMS; THERMODYNAMICAL PARAMETERS; PH EFFECT;

D O I：

10.1016/0045-6535(94)00418-T

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ability of waste biogas residual slurry (BRS) to remove Cr (VI) from aqueous solutions was investigated. The influence of various parameters such as metal ion concentration, contact time, adsorbent dosage, adsorbent particle size, temperature and pH on the removal of Cr (VI) has been studied. The adsorption followed first order rate expression. The equilibrium data fit well into Langmuir and Freundlich isotherms. Adsorption was maximum at an initial pH of 1.51. Temperature studies showed that the adsorption process was endothermic in nature.

引用

页码：561 / 578

页数：18

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