Adsorption studies on Citrus reticulata (fruit peel of orange):: removal and recovery of Ni(II) from electroplating wastewater

被引：400

作者：

Ajmal, M ^{[1
]}

Rao, RAK ^{[1
]}

Ahmad, R ^{[1
]}

Ahmad, J ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Fac Engn & Technol, Dept Appl Chem, Environm Res Lab, Aligarh 202002, Uttar Pradesh, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2000年 / 79卷 / 1-2期

关键词：

endothermic; adsorption; isotherm; desorption; regeneration;

D O I：

10.1016/S0304-3894(00)00234-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The ability of fruit peel of orange to remove Zn, Ni, Cu, Pb and Cr from aqueous solution by adsorption was studied. The adsorption was in the order of Ni(II) > Cu(II) > Pb(II) > Zn(II) > Cr(II). The extent of removal of NI(II) was found to be dependent on sorbent dose, initial concentration, pH and temperature. The adsorption follows first-order kinetics. The process is endothermic showing monolayer adsorption of Ni(II), with a maximum adsorption of 96% at 50 degreesC for an initial concentration of 50 mg l(-1) at pH 6. Thermodynamic parameters were also evaluated. Desorption was possible with 0.05 M HCl and was found to be 95.83% in column and 76% in batch process, respectively. The spent adsorbent was regenerated and recycled thrice. The removal and recovery was also done in wastewater and was found to be 89% and 93.33%, respectively. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：117 / 131

页数：15

共 37 条

[1] Studies on removal and recovery of Cr(VI) from electroplating wastes [J].