Removal of hexavalent chromium from aqueous solution by a novel biosorbent Caryota urens seeds: equilibrium and kinetic studies

被引：17
|
作者：
Suganya, E. [1 ]
Rangabhashiyam, S. [1 ]
Lity, A. V. [1 ]
Selvaraju, N. [1 ]
机构：
[1] Natl Inst Technol Calicut, Dept Chem Engn, Kozhikode 673601, Kerala, India
来源：
DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 50期
关键词：
Biosorption; Hexavalent chromium; Caryota urens seed; Isotherms; Kinetics; WASTE-WATER; VI IONS; ADSORPTION; DEGRADATION; BIOSORPTION; PERFORMANCE; ADSORBENTS; CR(VI); COMPOSITE; PB(II);
D O I：
10.1080/19443994.2015.1134355
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A novel biosorbent Caryota urens seeds (CUS) was investigated for the technical feasibility for the biosorption of hexavalent chromium from aqueous solution. The biosorbent was characterized by SEM, FT-IR spectral, and EDS analysis. Effects of biosorbent size, biosorbent dosage, Cr(VI) concentration, pH, and contact time on the biosorption of hexavalent chromium were investigated. Both the Langmuir and Freundlich isotherms were suitable for describing the biosorption of Cr(VI) onto CUS. Application of the Langmuir isotherm model to the biosorption system yielded a maximum biosorption capacity of 52.63mg/g at an equilibrium pH value of 2 and 303K. Kinetic data were best fitted with the pseudo-second-order kinetic model. The results indicate that the CUS can be effective biosorbent for the removal of Cr(VI) from aqueous solution.
引用
收藏
页码：23940 / 23950
页数：11
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