Stability of emulsion liquid membrane using bifunctional diluent and blended nonionic surfactant for phenol removal

Rosly, Muhammad Bukhari; Jusoh, Norela; Othman, Norasikin; Rahman, Hasimah Abdul; Sulaiman, Raja Norimie Raja; Noah, Norul Fatiha Mohamed

doi:10.1016/j.cep.2019.107790

Cited by 47 publications

(15 citation statements)

References 43 publications

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“…In the present study, the extraction of Cr(VI) using TOPO is considered to be optimal for pH 1, since lower pHs do not offer significantly improved extraction efficiency. However, not satisfactory results are obtained at intermediate pHs (3)(4)(5)(6)(7), indicating that frequently a pH adjustment of most industrial wastewaters will be required for Cr(VI) removal by ELMs.…”

Section: Effect Of Ph Of the Feed Phasementioning

confidence: 99%

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Green Emulsified Liquid Membrane for Hexavalent Chromium Extraction: Formulation and Process Optimization

et al. 2021

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The influence of several formulation and operating conditions on hexavalent chromium extraction by green emulsified liquid membranes (GELMs) was studied. An excellent removal efficiency was achieved under optimized conditions. The optimum GELM formulation in terms of stability was obtained with tri-n-octylphosphine oxide (TOPO) as extractant, polyglycerol polyricinoleate (PGPR) and polyoxyethylene sorbitan monooleate (Tween 80) as stabilizers in sunflower oil. Optimum GELMs showed a monomodal distribution of sizes around 1.29 mm. Results confimed that the use of a vegetable solvent and PGPR for GELM formulation is a promising alternative to petroleum organic solvents.

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Section: Effect Of Ph Of the Feed Phasementioning

confidence: 99%

“…The emulsion liquid membrane (ELM) technique has great potential for recovery and removal of hydrocarbons and different metal ions from wastewater in comparison with conventional methods [4]. This technique have been studied for removing phenol [5][6][7], cadmium [8][9][10], and chromium [11,12] from waste solutions.…”

Section: Introductionmentioning

confidence: 99%

Green Emulsified Liquid Membrane for Hexavalent Chromium Extraction: Formulation and Process Optimization

et al. 2021

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“…EMLs are usually described as a bubble inside a bubble contained in the feed phase, where the inner bubble is the strip phase, closed by the LM membrane phase. ELMs are characterized by a large surface area per unit source phase volume, but are not technologically attractive, mainly because of the low emulsion stability [ 69 , 70 ].…”

Section: Hmps Obtained By Coupling Membrane Processes With Solventmentioning

confidence: 99%

Application of Hybrid Membrane Processes Coupling Separation and Biological or Chemical Reaction in Advanced Wastewater Treatment

2020

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The rapid urbanization and water shortage impose an urgent need in improving sustainable water management without compromising the socioeconomic development all around the world. In this context, reclaimed wastewater has been recognized as a sustainable water management strategy since it represents an alternative water resource for non-potable or (indirect) potable use. The conventional wastewater remediation approaches for the removal of different emerging contaminants (pharmaceuticals, dyes, metal ions, etc.) are unable to remove/destroy them completely. Hybrid membrane processes (HMPs) are a powerful solution for removing emerging pollutants from wastewater. On this aspect, the present paper focused on HMPs obtained by the synergic coupling of biological and/or chemical reaction driven processes with membrane processes, giving a critical overview and particular emphasis on some case studies reported in the pertinent literature. By using these processes, a satisfactory quality of treated water can be achieved, permitting its sustainable reuse in the hydrologic cycle while minimizing environmental and economic impact.

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“…However, considering the low concentration of the main monolignols that constitute lignin, which can be obtained through enzymatic, thermal, chemical, and physical processes, membrane technology is more suitable because of its low operating costs and energy consumption. Liquid membranes have been used the recent years to treat individual phenolic or amino acid compounds in wastewater and food samples [ 15 , 16 , 17 , 18 ]. The carrier used as the liquid membrane has mostly been a mixture of an organic-solvent systems.…”

Section: Introductionmentioning

confidence: 99%

Liquid Membranes for Efficient Recovery of Phenolic Compounds Such as Vanillin and Catechol

et al. 2020

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Investigations were carried out to obtain different lignin monomers such as vanillin and catechol as efficiently as possible, to prevent side reactions e.g., during lignin degradation. Therefore, extraction experiments were performed to determine the influence of parameters such as initial pH in the aqueous phase, organic phases containing alcohols or solvating extractants, and monomer concentrations. Cyanex 923 (Cy923) and tri-n-butyl-phosphat (TBP) diluted in kerosene were the organic phases chosen to evaluate the transport of vanillin because of their high efficiencies (>76.8%) and suitability in membrane technologies. The most efficient vanillin transport was accomplished with Cy923, as > 90% of vanillin was transferred after 5 h. However, the permeability coefficient at carrier concentration of > 0.48 mol/L was influenced not only by the diffusion but also by the organic mixture viscosity. Thus, this concentration was used in the membrane experiment containing a mixture of vanillin and catechol in the feed phase. Catechol was transported about 7% faster to the receiving phase than vanillin, presumably due to its chemical structure. Side reactions were avoided using the current liquid membrane set-up, allowing the further industrial application of an entire process, which, e.g., recovers vanillin from enzymatic lignin conversion by membrane technology.

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Stability of emulsion liquid membrane using bifunctional diluent and blended nonionic surfactant for phenol removal

Cited by 47 publications

References 43 publications

Green Emulsified Liquid Membrane for Hexavalent Chromium Extraction: Formulation and Process Optimization

Green Emulsified Liquid Membrane for Hexavalent Chromium Extraction: Formulation and Process Optimization

Application of Hybrid Membrane Processes Coupling Separation and Biological or Chemical Reaction in Advanced Wastewater Treatment

Liquid Membranes for Efficient Recovery of Phenolic Compounds Such as Vanillin and Catechol

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