REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION BY USING ADSORPTION ONTO COMMERICAL IRON POWDER; STUDY OF EQUILIBRIUM AND KINETICS

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RAHMANI A.R.; NOOROZI R.; SAMADI M.T.; SHIRZAD SIBONI M.

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Journal: Avicenna Journal of Clinical Medicine Year:2011 | Volume:18 | Issue:3 (SN 61) Page(s): 33-40

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Title

REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION BY USING ADSORPTION ONTO COMMERICAL IRON POWDER; STUDY OF EQUILIBRIUM AND KINETICS

Author(s)

RAHMANI A.R. | NOOROZI R. | SAMADI M.T. | SHIRZAD SIBONI M. | Issue Writer Certificate

Keywords

ADSORPTIONQ2

CHROMIUMQ2

HEXAVALENTQ2

IRON POWDERQ2

Abstract

Introduction & Objective: Industrial wastewaters including heavy metals are one of the important sources of environmental pollution. Heavy metals such as CHROMIUM are found in plating wastewater and are harmful for human health and environment. The purpose of the present study was to investigate ADSORPTION of HEXAVALENT CHROMIUM Cr (VI) from aqueous solution onto commerical IRON POWDER as an effective, faster, and cheaper adsorbent. Materials & Methods: This research was an experimental- lablatory study done in batch system. This study investigated the removal of HEXAVALENT CHROMIUM by using commerical IRON POWDER with variation pH, contact time, IRON POWDER dose and initial HEXAVALENT CHROMIUM concentration in batch system, and the result was analyzed by Excel software.Results: The results showed that the removal efficiency decreased with increasing pH and initial CHROMIUM concentration. Also the results showed that the removal efficiency increased with increasing IRON POWDER dose and contact time. With increasing adsorbent dose from 0.1 g/100 cc to 1.5 g/100 cc, the removal efficiency increased from 47.5% to 92.5 % in constant conditions (pH=7, initial HEXAVALENT CHROMIUM concentration=20 mg/L). Also removal efficiency increased from 41.1% to 48.5% with increasing contact time from 2 min to 120 min in constant conditions (pH=7, IRON POWDER=0.1 g/100 cc, initial HEXAVALENT CHROMIUM concentration=20 mg/L). Experimental isotherms and kinetics models were assessed by Langmuir and Freundlich isotherms and pseudo-first-order, pseudo-second-order kinetics and modifed pseudo-first-order models. The results showed that the data were acceptably explained by Langmuir isotherms and pseudo-second-order kinetics models, respectively.Conclusion: The results showed that the removal of HEXAVALENT CHROMIUM from aqueous solution using sawdust can be done faster and cheaper.

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APA: Copy

RAHMANI, A.R., NOOROZI, R., SAMADI, M.T., & SHIRZAD SIBONI, M.. (2011). REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION BY USING ADSORPTION ONTO COMMERICAL IRON POWDER; STUDY OF EQUILIBRIUM AND KINETICS. AVICENNA JOURNAL OF CLINICAL MEDICINE (SCIENTIFIC JOURNAL OF HAMADAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES), 18(3 (SN 61)), 33-40. SID. https://sid.ir/paper/17450/en

Vancouver: Copy

RAHMANI A.R., NOOROZI R., SAMADI M.T., SHIRZAD SIBONI M.. REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION BY USING ADSORPTION ONTO COMMERICAL IRON POWDER; STUDY OF EQUILIBRIUM AND KINETICS. AVICENNA JOURNAL OF CLINICAL MEDICINE (SCIENTIFIC JOURNAL OF HAMADAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES)[Internet]. 2011;18(3 (SN 61)):33-40. Available from: https://sid.ir/paper/17450/en

IEEE: Copy

A.R. RAHMANI, R. NOOROZI, M.T. SAMADI, and M. SHIRZAD SIBONI, “REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION BY USING ADSORPTION ONTO COMMERICAL IRON POWDER; STUDY OF EQUILIBRIUM AND KINETICS,” AVICENNA JOURNAL OF CLINICAL MEDICINE (SCIENTIFIC JOURNAL OF HAMADAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES), vol. 18, no. 3 (SN 61), pp. 33–40, 2011, [Online]. Available: https://sid.ir/paper/17450/en

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