INNOVATIVE BIOSORBENT FOR THE REMOVAL OF CADMIUM IONS FROM WASTEWATER

被引：11

作者：

Altaher, Hosam ^{[1
,2
]}

Alghamdi, Ahmad ^{[1
]}

Omar, Waid ^{[3
]}

机构：

[1] Yanbu Ind Coll, Chem Engn Technol Dept, Yanbu, Saudi Arabia

[2] Univ Nizwa, Coll Engn, Dept Chem & Petrochem Engn, Birkat Almouz 616, Oman

[3] King Faisal Univ, Coll Engn, Dept Chem Engn, Al Hufuf 31982, Al Ahsaa, Saudi Arabia

来源：

ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL | 2015年 / 14卷 / 04期

关键词：

adsorption; Cadmium; fiber; palm; wastewater; HEAVY-METALS; AQUEOUS-SOLUTION; ADSORPTION; EQUILIBRIUM; BIOSORPTION; SEPARATION; RECOVERY; GREEN; ZINC; PRECIPITATION;

D O I：

10.30638/eemj.2015.088

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the present work, the removal of cadmium ions from aqueous solution using an agricultural waste as biosorbent, namely trunk palm fibers was investigated. The adsorption equilibrium and kinetics for this system were studied. Four adsorption models were applied to understand the nature of the adsorption process. Freundlich adsorption isotherm was found to best fit the experimental data. The maximum adsorption capacity was found to be 23.8 mg/g. The adsorption process was found to be very fast achieving equilibrium within 5 minutes. Four kinetic models were applied to explain the mechanism of adsorption. Among these models, pseudo second order model was found to perfectly fit the experimental data. Both equilibrium and kinetic models indicated the chemical nature of the adsorption process due to the interaction of cadmium ions and functional groups on the surface of the palm fibers.

引用

页码：793 / 800

页数：8

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