Author
Gayathri Naidu
Bio: Gayathri Naidu is an academic researcher from University of Technology, Sydney. The author has contributed to research in topics: Membrane distillation & Fouling. The author has an hindex of 25, co-authored 54 publications receiving 1595 citations.
Topics: Membrane distillation, Fouling, Adsorption, Brine, Desalination
Papers
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TL;DR: Insight is provided in establishing reuse and resource recovery as the holistic approach towards sustainable AMD treatment and integrated technologies that deserve in depth future exploration are highlighted.
229 citations
05 Jan 2017
TL;DR: In this article, the authors present a comprehensive and critical review of the current methods of extracting valuable minerals from seawater and seawater brines generated in desalination plants, and suggest ways to overcome some of the limitations and challenges associated with the extraction process.
Abstract: Seawater contains large quantities of valuable minerals, some of which are very scarce and expensive in their land-based form. However, only a few minerals, the ones in high concentrations, are currently mined from the sea. Due to recent problems associated with land-based mining industries as a result of depletion of high-grade ores, sustainable water and energy demand and environmental issues, seawater mining is becoming an attractive option. This paper presents a comprehensive and critical review of the current methods of extracting valuable minerals from seawater and seawater brines generated in desalination plants, and suggests ways to overcome some of the limitations and challenges associated with the extraction process. The extraction methods discussed are solar evaporation, electrodialysis (ED), membrane distillation crystallisation (MDC), and adsorption/desorption.
155 citations
TL;DR: In this article, a review summarizes the progress and recent development of studies on membrane distillation membranes with special wettability and demonstrates potential solutions to the above-mentioned challenges for future research in high saline wastewater treatment.
135 citations
TL;DR: In this article, the authors investigated organic fouling development in a direct contact membrane distillation system with synthetic model solutions of humic acid (HA), alginate acid (AA), and bovine serum albumin (BSA).
128 citations
TL;DR: In this paper, a direct contact membrane distillation (DCMD) was evaluated as a treatment option of wastewater reverse osmosis concentrate (WWROC) discharged from wastewater reclamation plants (WRPs).
124 citations
Cited by
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TL;DR: Improved brine management strategies are required to limit the negative environmental impacts and reduce the economic cost of disposal, thereby stimulating further developments in desalination facilities to safeguard water supplies for current and future generations.
932 citations
TL;DR: In this paper, a review of different fouling mechanisms in the membrane distillation process, their possible mitigation and control techniques, and characterization strategies that can be of help in understanding and minimizing the fouling problem.
764 citations
TL;DR: This paper reviews membrane fouling types and fouling control strategies, with a focus on the latest developments, including biofouling, organic fouling, inorganic scaling and colloidal fouling.
567 citations
TL;DR: It is likely that limitations in fluid mechanics and mass transfer will define the upper bounds of membrane performance, with RO remaining as the key to desalination and reclamation, with other membrane processes growing in support and in niche areas.
Abstract: Membrane technology offers the best options to "drought proof" mankind on an increasingly thirsty planet by purifying seawater or used (waste) water. Although desalination by reverse osmosis (RO) and wastewater treatment by membrane bioreactors are well established the various membrane technologies still need to be significantly improved in terms of separation properties, energy demand and costs. We can now define the ideal characteristics of membranes and advances in material science and novel chemistries are leading to increasingly effective membranes. However developments in membranes must be matched by improved device design and membrane engineering. It is likely that limitations in fluid mechanics and mass transfer will define the upper bounds of membrane performance. Nevertheless major advances and growth over the next 20 years can be anticipated with RO remaining as the key to desalination and reclamation, with other membrane processes growing in support and in niche areas.
530 citations