Treatment of wastewater containing arsenic using Rhazya stricta as a new adsorbent

被引：20

作者：

Badr, Nadia ^{[1
]}

Al-Qahtani, Khairia M. ^{[2
]}

机构：

[1] Univ Alexandria, Dept Environm Sci, Fac Sci, Alexandria, Egypt

[2] Abdel Rahman Univ, Dept Chem, Fac Sci, Princess Nora Bint, Riyadh, Saudi Arabia

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2013年 / 185卷 / 12期

关键词：

Biosorption; Arsenic; Rhazia stricta; Adsorption isotherm; Adsorption kinetics; AQUEOUS-SOLUTIONS; METHYLENE-BLUE; ADSORPTION; BIOSORPTION; SORPTION; CONTAMINATION; KINETICS; REMOVAL; BANGLADESH; IONS;

D O I：

10.1007/s10661-013-3220-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effective removal of heavy metals from aqueous wastes is among the most important issues for many industrialized countries. Removal of arsenic (As) from aqueous solutions was studied using Rhazia stricta biomass. The batch experiments are carried out to investigate the effect of the significant process parameters such as pH, contact time, solute concentration and adsorbent dose. The optimum pH required for maximum adsorption was found to be 5. The equilibrium data for the adsorption of As(V) on R. stricta are tested with various adsorption isotherm models such as Langmuir, Freundlich, Tempkin and Generalized equation. Results indicate the following order to fit the isotherm: Langmuir (1 and 2) > Tempkin > Generalized form > Freundlich. A comparison of two kinetic models showed that our data fitted well to the Elovich model.

引用

页码：9669 / 9681

页数：13

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