Mitigation of HA, BSA and oil/water emulsion fouling of PVDF Ultrafiltration Membranes by SiO2-g-PEGMA nanoparticles

Saini, Bharti; Sinha, Manish Kumar; Dash, Sukanta Kumar

doi:10.1016/j.jwpe.2018.03.018

Cited by 71 publications

(25 citation statements)

References 46 publications

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“…8, The feed flux through the modified membrane is 4.5 times of the feed flux of plain membrane flux with oil in water emulsion feeds. This may be due to higher pore percent or pore density of modified membrane compare to the plain membrane which were determined in our previous work [Saini et al, 2018]. The high pore density leads to the increase in flux.…”

Section: Membrane Performance Analysismentioning

confidence: 61%

Wastewater Treatment Containing Oil Using Polyvinylidene Fluoride (PVDF) Ultrafiltration Membrane Modified with Functionalized SiO2 Nanoparticles

Saini¹,

Sinha²

2019

JEES

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Polyvinylidene fluoride (PVDF) ultrafiltration membrane was fabricated by phase inversion method for the treatment of wastewater containing oil. In order to achieve less fouling and high rejection, modification of PVDF membrane had been done by blending of hydrophilic Poly(ethylene glycol) methyl ether methacrylate functionalized-SiO 2 nanoparticles. Successful functionalization of SiO 2 nanoparticles was done by measuring weight percentage of elements present using energy dispersive Xray spectroscopy (EDX) and particle size analyzer. The morphology of the plain and modified membranes was evaluated using field emission scanning electron microscope (FESEM). The contact angle (CA) was investigated for evaluation of hydrophilicity of the membranes. The hydrophilicity result reveals that the antifouling property of modified membrane was higher compare to plain membrane. Plain PVDF membrane showed less oil rejection of about 69% whereas functionalized nanoparticles helped to improve the oil rejection to the maximum value of 89%. Thus the PVDF/Polyethylene glycol 6000/ functionalised-nanoparticles membrane is desirable in the treatment of wastewater containing oil.

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Section: Membrane Performance Analysismentioning

confidence: 61%

Wastewater Treatment Containing Oil Using Polyvinylidene Fluoride (PVDF) Ultrafiltration Membrane Modified with Functionalized SiO2 Nanoparticles

Saini¹,

Sinha²

2019

JEES

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“…Therefore, the membrane fouling could be a dominant factor in this experiment. Although the larger pore size of the NF membrane can result in higher water flux, the foulants could penetrate through the membrane pores, unlike the RO membrane, causing a more severe fouling effect [ 19 , 20 ]. The contact angle of the NF 90 membrane was 72.2°, while that of BW30LE was 63.7°; therefore, the RO membrane was found to be more hydrophilic compared to the NF membrane.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Nanofiltration with Reverse Osmosis in Reclaiming Tertiary Treated Municipal Wastewater for Irrigation Purposes

et al. 2021

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This study compares the performance of nanofiltration (NF) and reverse osmosis (RO) for the reclamation of ultrafiltered municipal wastewater for irrigation of food crops. RO and NF technologies were evaluated at different applied pressures; the performance of each technology was evaluated in terms of water flux, recovery rate, specific energy consumption and quality of permeate. It was found that the permeate from the reverse osmosis (RO) process complied with Food and Agriculture Organization (FAO) standards at pressures applied between 10 and 18 bar. At an applied pressure of 20 bar, the permeate quality did not comply with irrigation water standards in terms of chloride, sodium and calcium concentration. It was found that nanofiltration process was not suitable for the reclamation of wastewater as the concentration of chloride, sodium and calcium exceeded the allowable limits at all applied pressures. In the reverse osmosis process, the highest recovery rate was 36%, which was achieved at a pressure of 16 bar. The specific energy consumption at this applied pressure was 0.56 kWh/m3. The lowest specific energy of 0.46 kWh/m3 was achieved at an applied pressure of 12 bar with a water recovery rate of 32.7%.

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“…Membrane hydrophilicity was examined by analyzing static water contact angle made by DI water drop on the surface of the membrane under standard temperature and pressure conditions using a goniometer. 31 The samples were fully dried before analysis to keep away from the structure distortion of membranes. In order to gain accuracy, at least five positions were selected on the top surface of the membrane to evaluate the static water contact angle.…”

Section: Membrane Characterizationmentioning

confidence: 99%

Synergetic effects of organic and inorganic additives on improvement in hydrophilicity and performance of PVDF antifouling ultrafiltration membrane for removal of natural organic material from water

Saini

Sinha

2021

J of Applied Polymer Sci

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Surrounding vegetation, animal, human and microbiological decomposition are the strong source of humic acid (HA) falling into the surface water bodies through rain runoff in the monsoon. HA contains various functional groups, such as carboxylic, phenolic, hydroxyl, and quinine, which are the major foulant. Contact of HA may have an adversarial health issue to human beings namely goiter, black foot, and cancer disease. The maximum permissible limit of HA in drinking water should be less than 2 ppm as per the Environmental Protection Agency (EPA). The membrane technology has prevailed a prominent place worldwide in chemical, water and wastewater treatment technologies. The proposed work is focused on the blending of organic-water soluble polymer polyethylene glycol 6000 as a pore-forming agent and inorganic salt lithium bromide (LiBr) as membrane morphology modifier with polyvinylidene fluoride host polymer in the N,N-Dimethylacetamide solvent. All fabricated membranes were characterized for functional groups and morphology. The total number of pores per unit surface area of membrane for membranes M-LiBr-0, M-LiBr-1, M-LiBr-2, and M-LiBr-3 are 2 × 10 13 , 2.3 × 10 14 , 2.7 × 10 14 and 2.82 × 10 14 , respectively. The static water contact angle was decreased from 68.2 to 50.6 with an increase in the content of LiBr from 0 to 3 wt%. The order of pure water flux and hydraulic permeability of the membrane was M-LiBr-0 < M-LiBr-1 < M-LiBr-2 < M-LiBr-3. The HA rejection of the membrane was also increased from 90.13% to 96.

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Mitigation of HA, BSA and oil/water emulsion fouling of PVDF Ultrafiltration Membranes by SiO2-g-PEGMA nanoparticles

Cited by 71 publications

References 46 publications

Wastewater Treatment Containing Oil Using Polyvinylidene Fluoride (PVDF) Ultrafiltration Membrane Modified with Functionalized SiO2 Nanoparticles

Wastewater Treatment Containing Oil Using Polyvinylidene Fluoride (PVDF) Ultrafiltration Membrane Modified with Functionalized SiO2 Nanoparticles

Comparison of Nanofiltration with Reverse Osmosis in Reclaiming Tertiary Treated Municipal Wastewater for Irrigation Purposes

Synergetic effects of organic and inorganic additives on improvement in hydrophilicity and performance of PVDF antifouling ultrafiltration membrane for removal of natural organic material from water

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