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Manuscript Submission Deadline 13 January 2023
Manuscript Extension Submission Deadline 03 February 2023

Currently, desalination is the major technology that has been used for removing salts, and it is becoming more and more commercialized. There are two main primary streams produced from the desalination plants: the desalinated water and a highly saline wastewater (brine discharge). Environmentally, there is a big problem during the desalination process; the disposal of the brine (solution with high concentration of salts) into the sea in the case of coastal desalination plants, or in the ground water aquifers in the case of inland plants. Because this brine solution contains a high concentration of salts, in addition to residual of chemicals from pre-treatment process, and the chemicals used to clean the membranes, it can adversely affect the ecosystem and the water salinity of the aquifers. Membrane distillation (MD), a thermally driven separation process in which separation is driven by phase change, is a promising technique for desalination of this highly concentrated water.

The main goal of this special issue is to cover the recent advances in the research of preparation, characterization and applications of membrane distillation technique for brine (RO reject) treatment. It is proposed to cover the new ideas and research directions around progressive advances of MD membranes. In addition, one of the main goals is to improve the energy efficiency of different MD configuration systems including Direct Contact Membrane Distillation (DCMD), Vacuum Membrane Distillation (VMD), Air Gap Membrane Distillation (AGMD), and Sweeping Gas Membrane Distillation (SGMD). In addition, one of the main applications of MD membranes is wastewater treatment, which includes: treatment of textile wastewaters, radioactive waste treatment, concentration of non-volatile acids, volatile acid recovery from industrial effluents, etc.

The aim of the current Research Topic is to cover promising, recent, and novel research trends in MD membranes, especially those are regarding to brine concentrate treatment. Areas to be covered in this Research Topic may include, but are not limited to:
• Preparation of superhydrophobic MD membranes
• Anti-wetting and scaling mitigation onto membranes surface
• Energy consumption reduction, solar-driven MD
• Oil/water separation MD membranes
• Nanocomposite and metal-organic framework composite MD membranes
• Different configurations of MD membranes (VMD, AGMD, SGMD, and DCMD)
• Advanced techniques of membranes cleaning systems
• Hollow fiber and nanofiber membranes
• Brine disposal management
• Wastewater treatment

Keywords: wastewater treatment, membrane, membrane distillation, desalination, brine discharge, separation


Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

Currently, desalination is the major technology that has been used for removing salts, and it is becoming more and more commercialized. There are two main primary streams produced from the desalination plants: the desalinated water and a highly saline wastewater (brine discharge). Environmentally, there is a big problem during the desalination process; the disposal of the brine (solution with high concentration of salts) into the sea in the case of coastal desalination plants, or in the ground water aquifers in the case of inland plants. Because this brine solution contains a high concentration of salts, in addition to residual of chemicals from pre-treatment process, and the chemicals used to clean the membranes, it can adversely affect the ecosystem and the water salinity of the aquifers. Membrane distillation (MD), a thermally driven separation process in which separation is driven by phase change, is a promising technique for desalination of this highly concentrated water.

The main goal of this special issue is to cover the recent advances in the research of preparation, characterization and applications of membrane distillation technique for brine (RO reject) treatment. It is proposed to cover the new ideas and research directions around progressive advances of MD membranes. In addition, one of the main goals is to improve the energy efficiency of different MD configuration systems including Direct Contact Membrane Distillation (DCMD), Vacuum Membrane Distillation (VMD), Air Gap Membrane Distillation (AGMD), and Sweeping Gas Membrane Distillation (SGMD). In addition, one of the main applications of MD membranes is wastewater treatment, which includes: treatment of textile wastewaters, radioactive waste treatment, concentration of non-volatile acids, volatile acid recovery from industrial effluents, etc.

The aim of the current Research Topic is to cover promising, recent, and novel research trends in MD membranes, especially those are regarding to brine concentrate treatment. Areas to be covered in this Research Topic may include, but are not limited to:
• Preparation of superhydrophobic MD membranes
• Anti-wetting and scaling mitigation onto membranes surface
• Energy consumption reduction, solar-driven MD
• Oil/water separation MD membranes
• Nanocomposite and metal-organic framework composite MD membranes
• Different configurations of MD membranes (VMD, AGMD, SGMD, and DCMD)
• Advanced techniques of membranes cleaning systems
• Hollow fiber and nanofiber membranes
• Brine disposal management
• Wastewater treatment

Keywords: wastewater treatment, membrane, membrane distillation, desalination, brine discharge, separation


Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

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