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Intensified Hydrodynamic Cavitation-Based Process for the Production of Liquid Emulsion Membrane (LEM) for the Extraction of Chromium(VI) Ions

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Abstract

The present work deals with the production of liquid emulsion membrane (LEM) accomplished by applying hydrodynamic cavitation-based process for the extraction of Chromium(VI) from wastewater. Aliquat 336 was used as the carrier during membrane transport. Diesel and Span 80 were used as diluent and emulsifier, respectively. NaOH (as a stripping agent in the internal phase) was used in emulsion preparation with the use of orifice (1 mm diameter)-based hydrodynamic cavitation process. Chromium(VI) removal from heavy metal-containing water was examined with the influence of LEM production time, amount of carrier, surfactant concentration, treat ratio (which is the ratio of feed phase to emulsion membrane phase) and type of diluent. The LEM synthesized using hydrodynamic cavitation process showed the possibility of complete removal of Chromium(VI) from the feed phase containing heavy metals, i.e. Chromium(VI). The optimal conditions were observed to be 2 min emulsification time, 1.00% carrier concentration, 3% surfactant concentration and treat ratio of 1:05. Therefore, the application of hydrodynamic cavitation for the production of LEM with excellent stability can be considered as a novel process for the extraction of Chromium(VI) from wastewater.

Article Highlights

  • Efficient preparation of ELM with Aliquat 336 using hydrodynamic cavitation.

  • 97.86% extraction of Cr(VI) in 10 min with prepared LEM by hydrodynamic cavitation.

  • Intensified interfacial mass transfer area of LEM prepared by hydrodynamic cavitation.

  • Intensified extraction of Chromium(VI) from the feed phase.

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Acknowledgements

This work was funded under Research Promotion Scheme [Sanction order no. 8-102/FDC/RPS(policy-1)/2019-20 dated 14th August 2020] by All India Council For Technical Education (AICTE), New Delhi.

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Correspondence to Bharat Apparao Bhanvase.

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Bolne, P.C., Ghodke, S.A. & Bhanvase, B.A. Intensified Hydrodynamic Cavitation-Based Process for the Production of Liquid Emulsion Membrane (LEM) for the Extraction of Chromium(VI) Ions. Int J Environ Res 15, 313–320 (2021). https://doi.org/10.1007/s41742-021-00322-4

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  • DOI: https://doi.org/10.1007/s41742-021-00322-4

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