Browsing by Author "Nayak, M.C."

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    Fabrication of novel PPSU/ZSM-5 ultrafiltration hollow fiber membranes for separation of proteins and hazardous reactive dyes
    (2018) Nayak, M.C.; Isloor, A.M.; Moslehyani, A.; Ismail, N.; Ismail, A.F.
    Polyphenylsulfone (PPSU) based asymmetric hollow fiber membranes were prepared by the addition of different percentages of ZSM-5 particles by diffusion induced phase separation method. Polyvinylpyrrolidone (PVP) was used as a pore forming agent. The fabricated membranes were characterized by Field Emission scanning electron microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), contact angle, water permeability, water uptake and by porosity measurements. Membranes filtration study was performed using different proteins namely bovine serum albumin (BSA), egg albumin (EA) and hazardous dyes like Reactive black 5 (RB-5), Reactive orange 16 (RO-16) in aqueous solutions. It was found that, addition of ZSM-5 in membrane matrix showed better dye removal capacity because of its hydrophilic and adsorptive nature. The membrane (PZ-3) with higher loading of additive exhibited rejection percentages of 100% for BSA, 95.23% for EA proteins and with reactive dyes 90.81% for RB-5 and 82.84% for RO-16 as compared to the pristine HF membrane. 2017 Taiwan Institute of Chemical Engineers
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    Fabrication of novel PPSU/ZSM-5 ultrafiltration hollow fiber membranes for separation of proteins and hazardous reactive dyes
    (Taiwan Institute of Chemical Engineers, 2018) Nayak, M.C.; Isloor, A.M.; Moslehyani, A.; Ismail, N.; A.F., A.F.
    Polyphenylsulfone (PPSU) based asymmetric hollow fiber membranes were prepared by the addition of different percentages of ZSM-5 particles by diffusion induced phase separation method. Polyvinylpyrrolidone (PVP) was used as a pore forming agent. The fabricated membranes were characterized by Field Emission scanning electron microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), contact angle, water permeability, water uptake and by porosity measurements. Membranes filtration study was performed using different proteins namely bovine serum albumin (BSA), egg albumin (EA) and hazardous dyes like Reactive black 5 (RB-5), Reactive orange 16 (RO-16) in aqueous solutions. It was found that, addition of ZSM-5 in membrane matrix showed better dye removal capacity because of its hydrophilic and adsorptive nature. The membrane (PZ-3) with higher loading of additive exhibited rejection percentages of 100% for BSA, 95.23% for EA proteins and with reactive dyes 90.81% for RB-5 and 82.84% for RO-16 as compared to the pristine HF membrane. © 2017 Taiwan Institute of Chemical Engineers
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    Novel polyphenylsulfone (PPSU)/nano tin oxide (SnO2) mixed matrix ultrafiltration hollow fiber membranes: Fabrication, characterization and toxic dyes removal from aqueous solutions
    (2019) Nayak, M.C.; Isloor, A.M.; Inamuddin; Prabhu, B.; A.F., N.I.; Asiri, A.M.
    Novel polyphenylsulfone (PPSU)/nano tin oxide (SnO2) mixed matrix hollow fiber membranes (HFMs) were fabricated by dry-wet spinning via phase separation method. In the current research, reported the contrast between neat PPSU membrane and nanocomposite membranes (PPSU/SnO2), to determine the toxic reactive dyes namely, reactive black-5 (RB-5) and reactive orange-16 (RO-16) removal ability from the aqueous media. Scanning electron microscopy (SEM) was used to observe the HFMs cross-sectional morphological changes and surface roughness parameters of membranes were analyzed using atomic force microscopy (AFM). The surface wettability ability of HFMs was examined with a contact angle, water uptake, and porosity measurements. The cross-flow filter unit was engaged to quantify the water permeability, anti-fouling ability as well as the dye rejection ability of fabricated membranes. With increasing the SnO2 NPs wt% in PPSU polymer matrix the membrane performance was enhanced continuously, it became evident that the incorporated SnO2 NPs plays main role in membrane performance. Added, water-soluble poly (vinylpyrrolidone) (PVP) can also impact the pore morphology in membranes. At the end, PS-3 membrane exhibited lower contact angle (63.7 0), higher water uptake (74.8%), porosity (84.1%), pure water flux 362.9 L/m2 h, and high potential for dyes rejection application, of about >94% for RB-5, and >73% for RO-16 dye, respectively. From the preliminary results, it can be stated that the usage of SnO2 NPs in membrane technology become effective towards wastewater treatment. 2019 Elsevier B.V.
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    Novel polyphenylsulfone (PPSU)/nano tin oxide (SnO2) mixed matrix ultrafiltration hollow fiber membranes: Fabrication, characterization and toxic dyes removal from aqueous solutions
    (Elsevier B.V., 2019) Nayak, M.C.; Isloor, A.M.; Siddique, I.; Balakrishna Prabhu, B.; Ismail, N.I.; Asiri, A.M.
    Novel polyphenylsulfone (PPSU)/nano tin oxide (SnO2) mixed matrix hollow fiber membranes (HFMs) were fabricated by dry-wet spinning via phase separation method. In the current research, reported the contrast between neat PPSU membrane and nanocomposite membranes (PPSU/SnO2), to determine the toxic reactive dyes namely, reactive black-5 (RB-5) and reactive orange-16 (RO-16) removal ability from the aqueous media. Scanning electron microscopy (SEM) was used to observe the HFMs cross-sectional morphological changes and surface roughness parameters of membranes were analyzed using atomic force microscopy (AFM). The surface wettability ability of HFMs was examined with a contact angle, water uptake, and porosity measurements. The cross-flow filter unit was engaged to quantify the water permeability, anti-fouling ability as well as the dye rejection ability of fabricated membranes. With increasing the SnO2 NPs wt% in PPSU polymer matrix the membrane performance was enhanced continuously, it became evident that the incorporated SnO2 NPs plays main role in membrane performance. Added, water-soluble poly (vinylpyrrolidone) (PVP) can also impact the pore morphology in membranes. At the end, PS-3 membrane exhibited lower contact angle (63.7 0), higher water uptake (74.8%), porosity (84.1%), pure water flux 362.9 L/m2 h, and high potential for dyes rejection application, of about >94% for RB-5, and >73% for RO-16 dye, respectively. From the preliminary results, it can be stated that the usage of SnO2 NPs in membrane technology become effective towards wastewater treatment. © 2019 Elsevier B.V.
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    Preparation and characterization of PPSU membranes with BiOCl nanowafers loaded on activated charcoal for oil in water separation
    (2017) Nayak, M.C.; Isloor, A.M.; Moslehyani, A.; Ismail, A.F.
    Bismuth oxychloride nanowafers were synthesized and loaded on activated charcoal (BiOCl-AC) and were used as a novel additive to prepare polyphenylsulfone (PPSU) ultrafiltration (UF) membranes along with polyvinylpyrrolidone (PVP) as a pore forming agent by phase inversion technique. The BiOCl nanowafers were characterized by using scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The PPSU hybrid membranes were characterized by SEM studies. The cross sectional images of the membranes along with the elemental mapping of membrane surface were assessed by using SEM and Energy Dispersive Spectroscopy (EDS). Hydrophilicity of the membranes was evaluated by contact angle, porosity and water uptake studies. The permeability of the membranes was determined by pure water flux (PWF). Membranes were also subjected to antifouling studies using bovine serum albumin (BSA) as the standard protein for rejection studies. The membranes showed greater permeability and antifouling property with the addition of BiOCl-AC. A unique cross flow ultrafiltration method was used to study the oil rejection results of both diesel fuel and crude oil. The experimental results of oil in water separation by the membrane M-3, showed 80% rejection for diesel fuel and 90.74% rejection for crude oil. 2017 Taiwan Institute of Chemical Engineers
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    Preparation and characterization of PPSU membranes with BiOCl nanowafers loaded on activated charcoal for oil in water separation
    (Taiwan Institute of Chemical Engineers, 2017) Nayak, M.C.; Isloor, A.M.; Moslehyani, A.; A.F., A.F.
    Bismuth oxychloride nanowafers were synthesized and loaded on activated charcoal (BiOCl-AC) and were used as a novel additive to prepare polyphenylsulfone (PPSU) ultrafiltration (UF) membranes along with polyvinylpyrrolidone (PVP) as a pore forming agent by phase inversion technique. The BiOCl nanowafers were characterized by using scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The PPSU hybrid membranes were characterized by SEM studies. The cross sectional images of the membranes along with the elemental mapping of membrane surface were assessed by using SEM and Energy Dispersive Spectroscopy (EDS). Hydrophilicity of the membranes was evaluated by contact angle, porosity and water uptake studies. The permeability of the membranes was determined by pure water flux (PWF). Membranes were also subjected to antifouling studies using bovine serum albumin (BSA) as the standard protein for rejection studies. The membranes showed greater permeability and antifouling property with the addition of BiOCl-AC. A unique cross flow ultrafiltration method was used to study the oil rejection results of both diesel fuel and crude oil. The experimental results of oil in water separation by the membrane M-3, showed 80% rejection for diesel fuel and 90.74% rejection for crude oil. © 2017 Taiwan Institute of Chemical Engineers