OPTIMIZATION OF CONTINUOUS FLOW ADSORPTION OF HEAVY METAL IONS BY PEGANUM HARMALA SEEDS

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MOHAMMADPOUR ELHAMEH; YAFTIAN MOHAMMAD REZA; Zamani Abbasali; GHARBANI PARVIN

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Journal: ARCHIVE OF HYGIENE SCIENCES Year:2017 | Volume:6 | Issue:1 Page(s): 32-38

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Title

OPTIMIZATION OF CONTINUOUS FLOW ADSORPTION OF HEAVY METAL IONS BY PEGANUM HARMALA SEEDS

Author(s)

MOHAMMADPOUR ELHAMEH | YAFTIAN MOHAMMAD REZA | Zamani Abbasali | GHARBANI PARVIN | Issue Writer Certificate

Keywords

PEGANUM HARMALA SEEDS

ADSORBENT

ADSORPTION

CONTINUOUS FLOW

HEAVY METALS

IRAN

Abstract

Background & Aims of the Study: HEAVY METALS discharge to environment is a worldwide problem growing in scale. When they accumulate in the environment and in food chains, they can profoundly disrupt biological processes. PEGANUM HARMALA SEEDS (PHS) was used as a bio-sorbent, using a continuous system for removing Pb2+, Co2+, Ni2+ and Cu2+ ions from aqueous solutions.Materials and Methods: PHS was used as ADSORBENT in ADSORPTION of HEAVY METALS from aqueous solutions. A stock solution of Pb (II), Co (II), Cu (II) and Ni (II) was prepared and experiments were down in a column as a reactor. The concentration was determined by atomic ADSORPTION spectroscopy. The effect of various parameters such as pH, contact time, heavy metal concentration, ionic strength, particle size and ADSORBENT dosage on the process was investigated. Langmuir, Frundlich and Temkin isotherms were studied to evaluate of ADSORPTION isotherms.Results: The ADSORPTION efficiency was found to be pH dependent and enhanced by increasing the solution pH. Maximum removal of ions were obtained at pH=4-8. The equilibrium time was attained after 30 min and desorption studies were performed, using diluted HNO3, H2SO4 and HCl solution (1M) on adsorbed metal ions from PHS. Results illustrated that adsorbed metal ions could be recovered under acidic conditions.Investigation of the process kinetic was best fitted with pseudo second-order model.Langmuir, Freundlich and Temkin models were tested for describing the equilibrium data.The Langmuir isotherm illustrated the best description of the cobalt and copper ADSORPTION mechanism and Freundlich model describes lead and nickel ions ADSORPTION on PHS.Conclusion: It was found that PHS would be a good ADSORBENT for removal of HEAVY METALS.

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APA: Copy

MOHAMMADPOUR, ELHAMEH, YAFTIAN, MOHAMMAD REZA, Zamani, Abbasali, & GHARBANI, PARVIN. (2017). OPTIMIZATION OF CONTINUOUS FLOW ADSORPTION OF HEAVY METAL IONS BY PEGANUM HARMALA SEEDS. ARCHIVE OF HYGIENE SCIENCES, 6(1), 32-38. SID. https://sid.ir/paper/333032/en

Vancouver: Copy

MOHAMMADPOUR ELHAMEH, YAFTIAN MOHAMMAD REZA, Zamani Abbasali, GHARBANI PARVIN. OPTIMIZATION OF CONTINUOUS FLOW ADSORPTION OF HEAVY METAL IONS BY PEGANUM HARMALA SEEDS. ARCHIVE OF HYGIENE SCIENCES[Internet]. 2017;6(1):32-38. Available from: https://sid.ir/paper/333032/en

IEEE: Copy

ELHAMEH MOHAMMADPOUR, MOHAMMAD REZA YAFTIAN, Abbasali Zamani, and PARVIN GHARBANI, “OPTIMIZATION OF CONTINUOUS FLOW ADSORPTION OF HEAVY METAL IONS BY PEGANUM HARMALA SEEDS,” ARCHIVE OF HYGIENE SCIENCES, vol. 6, no. 1, pp. 32–38, 2017, [Online]. Available: https://sid.ir/paper/333032/en

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