Membrane and Water Treatment

  • 제12권6호
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  • Pages.293-304
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  • 2021
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Removal of Hg2+ ions using tri n-butyl phosphate based supported liquid membrane from aqueous samples

  • 투고 : 2020.02.01
  • 심사 : 2021.10.04
  • 발행 : 2021.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

Mercury is a poisonous heavy metal that causes deleterious effects on public health and the ecosystem, even with a trace level of contamination. Selective separation of mercury ions in an aqueous environment is a challenging task, while supported liquid membrane poses to be a promising tool. In this research work, the removal of mercury ions using a porous PTFE membrane with TBP as a carrier has been studied. Batch experiments were carried out in an SLM reactor with feed phase and strip phase solution on either side of the membrane. Maximum removal of 97% of Hg2+ ions occurred under optimum conditions, namely, 0.5 M of HCl (feed), 0.4 M NaOH (strip), 90% of TBP, stirring speed at 300 rpm and 3 h of reaction time. SEM analysis of the membrane confirmed the formation of a complex between TBP and Hg2+ ions. SLM was found to be stable for 18 h. The high selectivity of the SLM towards Hg2+ ions was unaltered in the presence of Cd2+, Ni2+ and Zn2+ ions. The proposed SLM was used for the treatment of spiked seawater samples, wastewater from a thermal power plant, and contaminated lake water samples. The results indicated that the SLM system was highly efficient in removing Hg2+ ions from real contaminated samples.

키워드

과제정보

Author Mr. Ayyavoo Saravanan is highly thankful to Basic Scientific research fellowship granted by University Grants commission, Government of India for the financial assistance and thankful to Management of NLC India Limited, Neyveli for their immense support.

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