SEPARATION OF CR (VI) FROM AQUEOUS SOLUTIONS BY ADSORPTION ON THE MICROFUNGUS USTILAGO MAYDIS

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SERRANO GOMEZ J.; OLGUIN M.T.

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Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2015 | Volume:12 | Issue:8 Page(s): 0-0

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Title

SEPARATION OF CR (VI) FROM AQUEOUS SOLUTIONS BY ADSORPTION ON THE MICROFUNGUS USTILAGO MAYDIS

Author(s)

SERRANO GOMEZ J. | OLGUIN M.T.

Keywords

CHROMIUM

USTILAGO MAYDIS

ADSORPTION

ISOTHERMS

THERMODYNAMIC PARAMETERS

Abstract

Cr (VI) ADSORPTION from aqueous solutions on the microfungus USTILAGO MAYDIS modified with formaldehyde (UmF) was studied as a function of the initial pH, contact time, CHROMIUM concentration and temperature. The pH results showed that Cr (VI) ADSORPTION on UmF is higher at acidic pH values and decreases as the pH increases to alkaline values. Cr (VI) ADSORPTION also depends on the CHROMIUM concentration and temperature. The Cr (VI) ADSORPTION data as a function of concentration obey the Freundlich and Langmuir ISOTHERMS at pH values of 2 and 6.5. The maximum sorption capacity of UmF for Cr (VI) at pH 2 was 2.53×10-3 mol/g (131.55 mg/g), which is significantly higher than that at pH 6.5 (0.33×10-3 mol/g or 17.60 mg/g). The negative value of ΔHo and the positive values of ΔGo indicate that the CHROMIUM ADSORPTION process is exothermic and non-spontaneous. The pHpzc value was 5 for UmF and it played a role in the Cr (VI) ADSORPTION.

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APA: Copy

SERRANO GOMEZ, J., & OLGUIN, M.T.. (2015). SEPARATION OF CR (VI) FROM AQUEOUS SOLUTIONS BY ADSORPTION ON THE MICROFUNGUS USTILAGO MAYDIS. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 12(8), 0-0. SID. https://sid.ir/paper/286133/en

Vancouver: Copy

SERRANO GOMEZ J., OLGUIN M.T.. SEPARATION OF CR (VI) FROM AQUEOUS SOLUTIONS BY ADSORPTION ON THE MICROFUNGUS USTILAGO MAYDIS. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2015;12(8):0-0. Available from: https://sid.ir/paper/286133/en

IEEE: Copy

J. SERRANO GOMEZ, and M.T. OLGUIN, “SEPARATION OF CR (VI) FROM AQUEOUS SOLUTIONS BY ADSORPTION ON THE MICROFUNGUS USTILAGO MAYDIS,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 12, no. 8, pp. 0–0, 2015, [Online]. Available: https://sid.ir/paper/286133/en

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