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<p>Heavy metal ions in aqueous and acidic solutions pose serious threats to ecosystems. Their effective removal is crucial, and emulsion liquid membrane (ELM) technology offers a promising solution. This review delves into ELM’s principles, mechanisms, components, and performance indicators&#xa0;including stability for extracting heavy metals from acidic solutions&#xa0;including phosphoric acid. , ELM’s stability issues, such as internal phase coalescence, membrane leakage, and swelling, limit its efficiency. Thus this review paper discusses previous research that analyzed ELM stability and heavy metal extraction efficiency from these&#xa0;acidic solutions. Furthermore, it assesses other&#xa0;techniques like EmulsionIonic Liquid Membrane&#xa0;(EILM) and Pickering Emulsion Liquid Membrane&#xa0;(PELM). These are proposed solutions for the stability challenges faced by conventional ELM. Comparing such techniques&#xa0;with conventional ELM,&#xa0;provides insight on&#xa0; their potential in recovering heavy metals. This review&#xa0;brings the attention for the needs for developing optimized ELM separation processes. It underscores the significance of ELM in extracting heavy metals&#xa0;and mitigating their ecological impacts. The findings and advancements discussed here highlight the potential for enhancing ELM’s stability and effectiveness, contributing to the sustainable management of heavy metal contamination in aqueous and acidic environments.</p>

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Emulsion liquid membrane (ELM) technique for efficient separation of heavy metals from acidic solutions including phosphoric acid: a review

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • O. Karai,
  • N. Y. Selem,
  • K. Benabderazak,
  • J. Mendil,
  • H. Mazouz,
  • M. H. Al-Dahhan

摘要

Heavy metal ions in aqueous and acidic solutions pose serious threats to ecosystems. Their effective removal is crucial, and emulsion liquid membrane (ELM) technology offers a promising solution. This review delves into ELM’s principles, mechanisms, components, and performance indicators including stability for extracting heavy metals from acidic solutions including phosphoric acid. , ELM’s stability issues, such as internal phase coalescence, membrane leakage, and swelling, limit its efficiency. Thus this review paper discusses previous research that analyzed ELM stability and heavy metal extraction efficiency from these acidic solutions. Furthermore, it assesses other techniques like EmulsionIonic Liquid Membrane (EILM) and Pickering Emulsion Liquid Membrane (PELM). These are proposed solutions for the stability challenges faced by conventional ELM. Comparing such techniques with conventional ELM, provides insight on  their potential in recovering heavy metals. This review brings the attention for the needs for developing optimized ELM separation processes. It underscores the significance of ELM in extracting heavy metals and mitigating their ecological impacts. The findings and advancements discussed here highlight the potential for enhancing ELM’s stability and effectiveness, contributing to the sustainable management of heavy metal contamination in aqueous and acidic environments.