Fouling control in SWRO desalination during harmful algal blooms: A historical review and future developments

Alayande, Abayomi Babatunde; Lim, Jihun; Kim, Jungbin; Hong, Seungkwan; Al-Amoudi, Ahmed S.; Park, Byungsung

doi:10.1016/j.desal.2022.116094

Cited by 22 publications

(4 citation statements)

References 116 publications

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“…Generally, two types of pre-treatment, conventional and membrane processes, are used with the aim of reducing microorganisms including bacteria and microalgae, colloidal contaminants, total organic carbon (TOC) and silt density index (SDI) of raw seawater to satisfy the downstream SWRO feed water requirement and reduce fouling propensity. 273 In particular, the SDI of the seawater, which measures the fouling capacity in the RO system, will drop to a typical value of <3 after pre-treatment, 274 suggesting that SWRO brine may be a relatively cleaner resource than raw seawater for uranium and lithium extraction.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

Lim,

Goh,

Goto

et al. 2023

J. Mater. Chem. A

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Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

Lim,

Goh,

Goto

et al. 2023

J. Mater. Chem. A

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“…Physical interventions encompass techniques such as nutrient load reduction, sonication, UV-C exposure, soil adjustments, hydrodynamic methods, and diverse filtration processes to mitigate HABs [11]. While most of these are environmentally friendly, they are energy-intensive, potentially rendering them economically impractical for large-scale applications [12]. Chemical treatments such as Triosyn, hydrogen peroxide, and copper sulfate have shown efficacy in short-term use.…”

Section: Introductionmentioning

confidence: 99%

Advancements in Biological Strategies for Controlling Harmful Algal Blooms (HABs)

Anabtawi,

Lee,

Al-Anazi

et al. 2024

Water

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Harmful algal blooms (HABs) are a primary environmental concern, threatening freshwater ecosystems and public health and causing economic damages in the billions of dollars annually. These blooms, predominantly driven by phytoplankton species like cyanobacteria, thrive in nutrient-rich, warm, and low-wind environments. Because of the adverse impacts of HABs, this review examines various control methods, focusing on biological strategies as sustainable solutions. While effective in disrupting algal populations, traditional chemical and physical interventions carry ecological risks and can be resource-intensive. Biological control methods, including biomanipulation and using algicidal microorganisms such as Streptococcus thermophiles, Myxobacteria, and Lopharia spadicea, emerge as eco-friendly alternatives offering long-term benefits. Additionally, barley and rice straw application has demonstrated efficacy in curbing HAB growth. These biological approaches work by inhibiting algal proliferation, disrupting cellular structures, and fostering algal cell aggregation. Despite their advantages over conventional methods, biological controls face challenges, including intricate ecological interactions. This article delves into the latest biological techniques aimed at eradicating HABs, intending to diminish their frequency and reduce toxin levels in aquatic environments. While most research to date has been confined to laboratory settings, scaling these methods to field applications presents hurdles due to the variability and complexity of natural ecosystems. The review underscores the need for further research and development in this critical area of environmental science.

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“…Membrane fouling involves organic and inorganic fouling, biofouling, and colloidal fouling [17]. For the organic fouling of salt-rejecting membranes, the decrease in the water flux is mainly due to the enhancement of the total hydraulic resistance caused by the organic fouling layer [18]. Additionally, organic fouling is strongly dependent upon particular physiological factors of the membrane, including membrane roughness, membrane materials, zeta potential, and hydrophilicity [18].…”

Section: Introductionmentioning

confidence: 99%

“…For the organic fouling of salt-rejecting membranes, the decrease in the water flux is mainly due to the enhancement of the total hydraulic resistance caused by the organic fouling layer [18]. Additionally, organic fouling is strongly dependent upon particular physiological factors of the membrane, including membrane roughness, membrane materials, zeta potential, and hydrophilicity [18]. Nanomaterials are added to the polyamide (PA) active layer to form a thin-film nanocomposite (TFN) membrane with enhanced separation efficiency [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves

et al. 2022

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The major challenges in forward osmosis (FO) are low water flux, high specific reverse solute flux (SRSF), and membrane fouling. The present work addresses these problems by the incorporation of graphene quantum dots (GQDs) in the polyamide (PA) layer of thin-film composite (TFC) membranes, as well as by using an innovative polyethersulfone nanofiber support for the TFC membrane. The GQDs were prepared from eucalyptus leaves using a facile hydrothermal method that requires only deionized water, without the need for any organic solvents or reducing agents. The nanofiber support of the TFC membranes was prepared using solution blow spinning (SBS). The polyamide layer with GQDs was deposited on top of the nanofiber support through interfacial polymerization. This is the first study that reports the fouling resistance of the SBS-nanofiber-supported TFC membranes. The effect of various GQD loadings on the TFC FO membrane performance, its long-term FO testing, cleaning efficiency, and organic fouling resistance were analyzed. It was noted that the FO separation performance of the TFC membranes was improved with the incorporation of 0.05 wt.% GQDs. This study confirmed that the newly developed thin-film nanocomposite membranes demonstrated increased water flux and salt rejection, reduced SRSF, and good antifouling performance in the FO process.

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Fouling control in SWRO desalination during harmful algal blooms: A historical review and future developments

Cited by 22 publications

References 116 publications

Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

Advancements in Biological Strategies for Controlling Harmful Algal Blooms (HABs)

Improved Forward Osmosis Performance of Thin Film Composite Membranes with Graphene Quantum Dots Derived from Eucalyptus Tree Leaves

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