ADSORPTION OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTIONS BY WHEAT BRAN

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NAMENI M.; ALAVI MOGHADAM S.M.R.; ARAMI M.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2008 | Volume:5 | Issue:2 (18) Page(s): 161-168

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Title

ADSORPTION OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTIONS BY WHEAT BRAN

Author(s)

NAMENI M. | ALAVI MOGHADAM S.M.R. | ARAMI M. | Issue Writer Certificate

Keywords

HEAVY METALS

NATURAL ADSORBENTS

ISOTHERM

KINETICS

Abstract

In this research, adsorption of chromium (VI) ions on wheat bran has been studied through using batch adsorption techniques. The main objectives of this study are to 1) investigate the chromium adsorption from aqueous solution by wheat bran, 2) study the influence of contact time, pH, adsorbent dose and initial chromium concentration on adsorption process performance and 3) determine appropriate adsorption ISOTHERM and KINETICS parameters of chromium (VI) adsorption on wheat bran. The results of this study showed that adsorption of chromium by wheat bran reached to equilibrium after 60 min and after that a little change of chromium removal efficiency was observed. Higher chromium adsorption was observed at lower pHs, and maximum chromium removal (87.8 %) obtained at pH of 2. The adsorption of chromium by wheat bran decreased at the higher initial chromium concentration and lower adsorbent doses. The obtained results showed that the adsorption of chromium (VI) by wheat bran follows Langmuir ISOTHERM equation with a correlation coefficient equal to 0.997. In addition, the KINETICS of the adsorption process follows the pseudo second-order KINETICS model with a rate constant value of 0.131 g/mg.min The results indicate that wheat bran can be employed as a low cost alternative to commercial adsorbents in the removal of chromium (VI) from water and wastewater.

Cites

References

PORE AND SOLID DIFFUSION KINETICS IN FIXED BED ADSORPTION UNDER CONSTANT PATTERN CONDITIONS

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APA: Copy

NAMENI, M., ALAVI MOGHADAM, S.M.R., & ARAMI, M.. (2008). ADSORPTION OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTIONS BY WHEAT BRAN. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 5(2 (18)), 161-168. SID. https://sid.ir/paper/285087/en

Vancouver: Copy

NAMENI M., ALAVI MOGHADAM S.M.R., ARAMI M.. ADSORPTION OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTIONS BY WHEAT BRAN. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2008;5(2 (18)):161-168. Available from: https://sid.ir/paper/285087/en

IEEE: Copy

M. NAMENI, S.M.R. ALAVI MOGHADAM, and M. ARAMI, “ADSORPTION OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTIONS BY WHEAT BRAN,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 5, no. 2 (18), pp. 161–168, 2008, [Online]. Available: https://sid.ir/paper/285087/en

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