The Effect of Crystalline Rice Husk Silica on Polysulfone Membrane for Wastewater Treatment

Harun, Zawati; Shohur, Muhamad Fikri; Yunos, Muhamad Zaini; Jamalludin, Mohd Riduan; Ismail, Ahmad Fauzi

doi:10.4028/www.scientific.net/amm.328.798

Cited by 16 publications

(19 citation statements)

References 10 publications

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“…Therefore as the pore size decreases, the rejection of membrane increases. This trend was discovered by a lot of researcher in this field 3,6,8,15 . …”

Section: 30 Results and Discussionmentioning

confidence: 85%

“…However the major disadvantage of PSf is hydrophobic characteristic which is easy for pollutant to adsorb on membrane surface and cause serious fouling behaviour. Thus the current investigation to improve PSf surface have been progressively studied such as using low molecular weight hydrophilic polymer, inorganic additives and chemical modification such as grafting and crosslinking [6][7][8][9][10][11][12][13] . Blending inorganic additives such as titanium dioxide (TiO2), Silica (SiO2), zinc oxide (ZnO) and silver oxide in PSf membrane was found to improve hydrophilicity and reduce fouling properties of membrane.…”

Section: 10 Introductionmentioning

confidence: 99%

“…However, high concentration of inorganic additives will lead to increase surface roughness and reduce water permeability due to pore blockage. Therefore the effect of concentration of these organic additives were investigated and discussed by many researchers 6,8,9,14,15 . Different opinion and view on behaviour of inorganic additives in membrane behaviour is still open for discussion.…”

Section: 10 Introductionmentioning

confidence: 99%

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Effect of Zinc Oxide on Performance of Ultrafiltration Membrane for Humic Acid Separation

et al. 2013

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The effects of different zinc oxide concentration on morphology, contact angle, surface roughness and rejection towards humic acid in polysulfone membrane were investigated. Flatsheet ultrafiltration membrane were prepared by using polysulfone as based polymer, polyethylene glycol as pore forming agent, zinc oxide as manipulated additive and TAP as compatibilizer. In this study, N, methyl-2-pyrrolidone were used as solvent and water as non solvent. The membrane were prepared via phase inversion method. Results showed that pure water flux was enhanced by the presence of zinc oxide up to 1 wt% and tend to decrease beyond this concentration. The increased pure water flux was attributed to the increase in hydrophilicity and surface roughness of membrane according to contact angle and AFM measurement. The rejection test with humic acid as solute revealed that by increasing zinc oxide concentration, rejection increases up to 98% at 2 wt% of zinc oxide. Therefore polysulfone/zinc oxide in this study can provide potential application for river water treatment which consist high humic acid concentration.

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“…Therefore as the pore size decreases, the rejection of membrane increases. This trend was discovered by a lot of researcher in this field 3,6,8,15 . …”

Section: 30 Results and Discussionmentioning

confidence: 85%

Section: 10 Introductionmentioning

confidence: 99%

Section: 10 Introductionmentioning

confidence: 99%

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Effect of Zinc Oxide on Performance of Ultrafiltration Membrane for Humic Acid Separation

et al. 2013

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“…Later on, The casting solution was cast using casting knife with range thickness 100-120µm and immersed into a coagulation bath containing distilled water. Then, the flat sheet membranes were dried 24 h before testing [1,2,3,11]. In this study, the coagulation medium were demineralized water or aqueous solution of sodium chloride (NaCl) at dissimilar concentrations is modified repeatedly in the range of 1-5 %.…”

Section: Preparation Of Psf Ultrafiltration Membranementioning

confidence: 99%

The Effect of Sodium Chloride (NaCl) Coagulant Medium of Polysulfone Ultrafiltration Membrane

Shohur

Harun

Yunos

et al. 2013

AMM

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This study investigates the effect of Sodium Chloride (NaCl) coagulant medium with different concentration to produce Polysulfone (PSf) ultrafiltration (UF) asymmetric membrane. The polymer membrane prepared by a phase inversion method using Polysulfone (PSf) as a base polymer, Polyethylene glycol (PEG) 400MW as copolymer additive, N-methyl-2-pyrrolidone (NMP) as solvent and NaCl coagulant medium with different concentration as nonsolvent. In this work, the concentration of immersion medium for membrane phase immersion process prepared based on different coagulation concentration medium NaCl was modified repeatedly in the range of 1-5%. These membrane performance were analyzed via pure water permeation and solute rejection of humic acid. Based on these results, the membrane immersed in 4% concentration of NaCl coagulant medium showed the highest pure water permeation (235.69 l.m -². h -¹) and solute rejection of humic acid which is up to 98%. IntroductionPhase inversion is one of the most popular and common technique that used for most researchers via immersion precipitation as a way to prepare microfiltration and ultrafiltration asymmetric membrane of polymer [1][2][3][4][5] and ceramic membranes [6][7][8]. According to this technique, a thin film of polymer homogenous dope solution is cast on a suitable substrate such as glass, polyester or polyethylene non-woven fabric, metal, Teflon henceforward immersed in a non-solvent bath where exchange between solvent and non-solvent and the precipitation of polymer take place [7].Nevertheless, this conventional method is not flexible enough to produce all the ideal membrane structure and properties. Thus, modification of basic procedure are commonly required including the addition of certain additive [1][2][3][4][5], introducing advance stride to make enhancement such as evaporation [9] or annealing [10], and coupling chemical reaction with phase separation [11]. Previous studies reported that by modification of polysulfone (PSf) ultrafiltration membrane with changing composition in casting solution or coagulation bath will gives positive implication to morphology and properties of membrane [12,13]. Coagulation bath is one of the methods used to make modification of membrane in term of structure and properties with an addition certain additive such as inorganic salt.

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“…[3][4][5] As proved previously, by varying of additive concentration or additive molecular weight (MW), optimal membrane structure can be obtained through enlargement or suppression of macrovoids in the membrane. [6][7][8] Polymer additive or non-solvent additive is a play vital role in the formation of membrane structure by enhancing or preventing the microvoid formation, enlarging pore formation, improving pore inter connectivity and introducing hydrophilicity. [9][10] According to Luo et.…”

Section: 10 Introductionmentioning

confidence: 99%

The Effect of Polyethelene Glycol on The Performance of Polysulfone Membrane Blend with Silica From Rice Husk

et al. 2013

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In the present work, the effect of rice husk silica (RHS) on the performance of polysulfone (PSf) blended with polyethylene glycol (PEG) membranes were investigated. The hybrid ultrafiltration membranes were prepared by phase inversion technique. The membrane performance was analyzed by using pure water flux, humic acid for the rejection test and followed by the membrane characterization. Results showed that PEG increased membrane pure water flux to 621.212 LMH and rejection humic acid at and 98%. The analysis of SEM revealed that PEG obviously changed the microstructure of the membrane especially at the top and sub layer.

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The Effect of Crystalline Rice Husk Silica on Polysulfone Membrane for Wastewater Treatment

Cited by 16 publications

References 10 publications

Effect of Zinc Oxide on Performance of Ultrafiltration Membrane for Humic Acid Separation

Effect of Zinc Oxide on Performance of Ultrafiltration Membrane for Humic Acid Separation

The Effect of Sodium Chloride (NaCl) Coagulant Medium of Polysulfone Ultrafiltration Membrane

The Effect of Polyethelene Glycol on The Performance of Polysulfone Membrane Blend with Silica From Rice Husk

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