Potable Water Biotechnology, Membrane Filtration and Biofiltration

Kajitvichyanukul, Puangrat; Shammas, Nazih K.; Hung, Yung‐Tse; Wang, Lawrence K.; Ananpattarachai, Jirapat

doi:10.1007/978-1-59745-278-6_11

Cited by 5 publications

(4 citation statements)

References 91 publications

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“…[2] The oily water kills creatures and damages people's health in a wide range of ways. [3] Furthermore, problems with safe freshwater have been further aggravated and are expected to grow worse in the coming decades due to oily wastewater. [4] Separating oil from oily water efficiently is widely recognized as a sustainable strategy.…”

Section: Doi: 101002/adma201600417mentioning

confidence: 99%

A Robust Polyionized Hydrogel with an Unprecedented Underwater Anti‐Crude‐Oil‐Adhesion Property

et al. 2016

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A polyionized hydrogel polymer (sodium polyacrylate-grafted poly(vinylidene fluoride) (PAAS-g-PVDF)) is fabricated via an alkaline-induced phase-inversion process. PAAS-g-PVDF coatings exhibit unprecedented anti-adhesion and self-cleaning properties to crude oils under an aqueous environment. A PAAS-g-PVDF-coated copper mesh can effectively separate a crude oil/water mixture with extremely high flux and high oil rejection driven by gravity, and is oil-fouling-free for long-term use.

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Section: Doi: 101002/adma201600417mentioning

confidence: 99%

A Robust Polyionized Hydrogel with an Unprecedented Underwater Anti‐Crude‐Oil‐Adhesion Property

et al. 2016

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“…Depending on the size of the pores in a membrane, different components can be fractionated and/or concentrated. MF and UF have the ability to remove suspended matter and colloids from the feed stream in water treatment systems via a sieving mechanism based on the size of the membrane pores [102].…”

Section: Separation Processes By Membranesmentioning

confidence: 99%

Fruit Juice Processing and Membrane Technology Application

et al. 2011

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This article provides an overview of recent developments and the published literature in membrane technology with regard to fruit juice processing and considers the impact of such technology on product quality. In the fruit juice industry, membrane technology is used mainly to clarify the juice by means of ultrafiltration and microfiltration and to concentrate it by means of nanofiltration and reverse osmosis. We look at enzyme immobilization techniques to improve filtration performance and operation methods to quantify fouling. Membrane fouling is a critical issue and inhibits the broader application of membranes in the fruit production industry. Pectin and its derivatives form a gel-like structure over the membrane surface, thereby reducing the permeate flux. In order to degrade pectin, the raw juice is usually subjected to an enzymatic treatment with pectinase, which hydrolyses pectin and causes its protein complexes to flocculate. The resulting juice has reduced viscosity and a much lower pectin content, which is advantageous in the subsequent filtration processes.

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“…The use of conventional techniques such as gravity settling, coagulation, flotation, flocculation, ozonation, and chemical methods are found ineffective for treating such oily water mixtures due to high operational cost and the problem of getting secondary pollutants as by-products [5,6,7]. Among many other oil-water separation techniques, membrane base separation technology is becoming much more versatile due to its simplicity, high operational efficiency, and environmental friendliness [8,9]. Different methods such as phase inversion [10,11,12], coating [13,14,15], sol-gel [16], and electrospinning [17,18,19,20,21] are being used to produce these membranes.…”

Section: Introductionmentioning

confidence: 99%

A Novel PAN-GO-SiO2 Hybrid Membrane for Separating Oil and Water from Emulsified Mixture

et al. 2019

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In this article, we report the development of a polyacrylonitrile-graphene oxide-silicon dioxide (PAN-GO-SiO2) hybrid membrane for separation of oil and water from their emulsified mixture. The membrane was successfully fabricated using a one-step electrospinning process. GO and SiO2 nanofillers were added in PAN in different concentrations to determine the optimized composition for the PAN-GO-SiO2 hybrid membrane. A scanning electron microscopy (SEM) examination showed that the nanofillers were uniformly embedded in the nanofibrous structure of the electrospun hybrid membrane. The GO was mainly embedded inside the PAN nanofibers, causing knots while SiO2 nanoparticles were found embedded on the nanofiber surface, resulting in the formation of micro-nano protrusions on the fiber surface. The formation of these hierarchical structures, together with enhanced hydrophilicity due to oxygen containing groups on both SiO2 and GO, resulted in a high rejection (>99%) of oil from oil-water emulsion. Membrane performance evaluation under gravity separation tests showed that the separation flux and phase rejection was enhanced with the incorporation of nanofillers. The inclusion of nanofillers also enhanced the mechanical properties of the membrane. The best flux and phase separation performance was obtained for an optimized concentration of 7.5 wt % SiO2 and 1.5 wt % GO in PAN. The flux of separated water was enhanced from 2600 L m−2 h−1 for pristine PAN to 3151 L m−2 h−1 for PAN-GO-SiO2. The hybrid membrane also showed good mechanical and chemical stability, and antifouling propensity.

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Potable Water Biotechnology, Membrane Filtration and Biofiltration

Cited by 5 publications

References 91 publications

A Robust Polyionized Hydrogel with an Unprecedented Underwater Anti‐Crude‐Oil‐Adhesion Property

A Robust Polyionized Hydrogel with an Unprecedented Underwater Anti‐Crude‐Oil‐Adhesion Property

Fruit Juice Processing and Membrane Technology Application

A Novel PAN-GO-SiO2 Hybrid Membrane for Separating Oil and Water from Emulsified Mixture

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