Modification methods of polyethersulfone membranes for minimizing fouling - Review

Kumar, R. Sathish; Arthanareeswaran, G.; Paul, Diby; Kweon, Ji Hyang

doi:10.12989/mwt.2015.6.4.323

Cited by 20 publications

(2 citation statements)

References 64 publications

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“…Nonetheless, in order to avoid complex processes during the preparation of unique multifunctional nanocomposite membranes, coating/deposition and mixing can both be utilized to attain an extensive variety of membranes with various properties that could be tailored for anticipated use [ 39 ]. Deposition is the procedure of creating a stratum of engineered nanoscale materials on the dynamic surface stratum of a membrane in order to have control on the hydrophilicity of the surface of the membrane via the changing of the chemical groups that are seen at the surface [ 45 ]. Several engineered nanoscale materials are accessible for integration into polymeric membranes to form state-of-the-art solutions for water paucity by mitigating fouling, attaining excellent fluxes, and enhancing the chemical and physical properties of the membrane.…”

Section: Polymer Nanocomposites Membranesmentioning

confidence: 99%

A Review on Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation

et al. 2021

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Globally, environmental challenges have been recognised as a matter of concern. Among these challenges are the reduced availability and quality of drinking water, and greenhouse gases that give rise to change in climate by entrapping heat, which result in respirational illness from smog and air pollution. Globally, the rate of demand for the use of freshwater has outgrown the rate of population increase; as the rapid growth in town and cities place a huge pressure on neighbouring water resources. Besides, the rapid growth in anthropogenic activities, such as the generation of energy and its conveyance, release carbon dioxide and other greenhouse gases, warming the planet. Polymer nanocomposite has played a significant role in finding solutions to current environmental problems. It has found interest due to its high potential for the reduction of gas emission, and elimination of pollutants, heavy metals, dyes, and oil in wastewater. The revolution of integrating developed novel nanomaterials such as nanoparticles, carbon nanotubes, nanofibers and activated carbon, in polymers, have instigated revitalizing and favourable inventive nanotechnologies for the treatment of wastewater and gas separation. This review discusses the effective employment of polymer nanocomposites for environmental utilizations. Polymer nanocomposite membranes for wastewater treatment and gas separation were reviewed together with their mechanisms. The use of polymer nanocomposites as an adsorbent for toxic metals ions removal and an adsorbent for dye removal were also discussed, together with the mechanism of the adsorption process. Patents in the utilization of innovative polymeric nanocomposite membranes for environmental utilizations were discussed.

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Section: Polymer Nanocomposites Membranesmentioning

confidence: 99%

A Review on Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation

et al. 2021

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“…Major efforts were devoted to enhancing long-term process stability by modifying membranes using anodization, additional layers and coatings, etc. [21,[24][25][26]. Unfortunately, these techniques suffer from complex procedures and possible environmental pollution due to the use of toxic chemical reagents [21,27].…”

Section: Introductionmentioning

confidence: 99%

Graphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency

Gong

Yang

et al. 2019

Nano-Micro Lett.

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HIGHLIGHTS• New concept of solar vapour gap membrane distillation (SVGMD) is based on synergizing of nanochannel-guided water transport, localized heating, and membrane separation from feed solution.• First-time introduction of the gap enables long-term stability and non-fouling membrane.• SVGMD exhibits a solar-water energy efficiency higher than state-of-the-art solar vapour systems.ABSTRACT Photothermal membrane distillation (MD) is a promising technology for desalination and water purification. However, solar-thermal conversion suffers from low energy efficiency (a typical solar-water efficiency of ~ 50%), while complex modifications are needed to reduce membrane fouling. Here, we demonstrate a new concept of solar vapour gap membrane distillation (SVGMD) synergistically combining self-guided water transport, localized heating, and separation of membrane from feed solution. A free-standing, multifunctional light absorber based on graphene array is custom-designed to locally heat the thin water layer transporting through graphene nanochannels. The as-generated vapour passes through a gap and condenses, while salt/contaminants are rejected before reaching the membrane. The high solar-water efficiency (73.4% at 1 sun), clean water collection ratio (82.3%), excellent anti-fouling performance, and stable permeate flux in continuous operation over 72 h are simultaneously achieved. Meanwhile, SVGMD inherits the advantage of MD in microorganism removal and water collection, enabling the solar-water efficiency 3.5 times higher compared to state-of-the-art solar vapour systems. A scaled system to treat oil/seawater mixtures under natural sunlight is developed with a purified water yield of 92.8 kg m −2 day −1 .Our results can be applied for diverse mixed-phase feeds, leading to the next-generation solar-driven MD technology.

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Membrane Fouling in Desalination

Tofighy

Mohammadi

2021

Sustainable Materials and Systems for Water Desalination

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Modification methods of polyethersulfone membranes for minimizing fouling - Review

Cited by 20 publications

References 64 publications

A Review on Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation

A Review on Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation

Graphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency

Membrane Fouling in Desalination

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