Highly Hydrophilic Electrospun Polyacrylonitrile/ Polyvinypyrro-lidone Nanofibers Incorporated with Gentamicin as Filter Medium for Dam Water and Wastewater Treatment

Alharbi, Abdulaziz; Alarifi, Ibrahim M.; Khan, Waseem S.; Asmatulu, Ramazan

doi:10.6000/1929-6037.2016.05.02.1

Cited by 45 publications

(14 citation statements)

References 53 publications

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“…The hydrophobic behavior of the nanofiber membrane returned to its original state upon increasing the EPS content, as observed for E2P1 (Figure b), with a water contact angle of 130.42°. The addition of PVP reduced the water contact angle and accelerated the formation of the Wenzel state of the nanofiber membrane, thus facilitating the filtration process. ,, …”

Section: Resultsmentioning

confidence: 99%

“…However, owing to the low wettability of EPS nanofiber membranes, it is necessary to add a hydrophilic material to achieve sufficient wettability. Poly(vinylpyrrolidone) (PVP) is a promising material for achieving hydrophilicity . PVP reduces the water contact angle (WCA) and accelerates the formation of the Wenzel state of the nanofiber membrane .…”

Section: Introductionmentioning

confidence: 99%

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High-Efficiency Water Filtration by Electrospun Expanded Polystyrene Waste Nanofibers

Arrosyid,

Zulfi,

Nur'aini

et al. 2023

ACS Omega

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Nanofiber membranes were successfully synthesized from expanded polystyrene (EPS) waste with the addition of poly(vinylpyrrolidone) (PVP) for water microfiltration using the electrospinning method. The EPS-based nanofiber membranes exhibited a smooth morphology and were uniform in size. The concentration of the EPS/ PVP solution changed some of the physical parameters of the nanofiber membrane, such as viscosity, conductivity, and surface tension. Greater viscosity and surface tension increase the nanofiber membrane diameter, whereas the addition of PVP results in hydrophilicity. Additionally, increasing the pressure increased the flux value of each variation of the nanofiber membranes. Furthermore, the rejection value was 99.99% for all variations. Finally, the use of EPS waste for nanofiber membranes is also beneficial for decreasing the amount of EPS waste in the environment and is an alternative to the current membranes available in the market for water filtration applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Efficiency Water Filtration by Electrospun Expanded Polystyrene Waste Nanofibers

Arrosyid,

Zulfi,

Nur'aini

et al. 2023

ACS Omega

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“… Schematic representation of ( A ) nanoprecipitation method (reproduced from [ 54 ], MDPI, 2016); ( B ) emulsification method (reproduced from [ 54 ], MDPI, 2016); ( C ) electrospinning (reproduced with permission from [ 58 ], Lifescience Global, 2016), and ( D ) additive manufacturing. Reproduced with permission from [ 59 ], Wiley, 2015.…”

Section: Polymeric Systems For Controlled Drug Releasementioning

confidence: 99%

Polymeric Systems for the Controlled Release of Flavonoids

2023

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Flavonoids are natural compounds that are attracting great interest in the biomedical field thanks to the wide spectrum of their biological properties. Their employment as anticancer, anti-inflammatory, and antidiabetic drugs, as well as for many other pharmacological applications, is extensively investigated. One of the most successful ways to increase their therapeutic efficacy is to encapsulate them into a polymeric matrix in order to control their concentration in the physiological fluids for a prolonged time. The aim of this article is to provide an updated overview of scientific literature on the polymeric systems developed so far for the controlled release of flavonoids. The different classes of flavonoids are described together with the polymers most commonly employed for drug delivery applications. Representative drug delivery systems are discussed, highlighting the most common techniques for their preparation. The flavonoids investigated for polymer system encapsulation are then presented with their main source of extraction and biological properties. Relevant literature on their employment in this context is reviewed in relationship to the targeted pharmacological and biomedical applications.

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“…Disinfection such as chlorine addition is the final stage before discharge of the effluent. Finally, the sludge treatment process which includes: two thickener tanks to allow the sludge to settle to the bottom and separate from the water for up to 1 day usage, dewatering unit (belt press) for further sludge treatment to make it safer for the environment [20]. Table 1 shows the water properties before and after each treatment stage in Tabuk STP.…”

Section: Waste Water Cleaning and Dam Water Technologymentioning

confidence: 99%

Water Treatment using Electrospun PVC/PVP Nanofibers as Filter Medium

Alarifi¹,

Alharbi²,

Mn³

et al. 2018

Int J Mater Sci Res

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One of the prevailing problems afflicting everybody globally is the scarcity of clean and portable water supply. Water crisis constitutes a major issue to present status of world's water resources. Water pollution is now becoming a critical issue globally. Water filtration/purification with the latest technology is the urgent need in today's economy. Electrospun nanofibers with high filtration efficiency, small pore size, high permeability and low cost are materials of choice for many filtration applications. These outstanding properties are most suitable for filtration media. In this study, Polyvinyl chloride (PVC) was dissolved in N, N-Dimethylacetamide (DMAC) and the small weight percentages of Polyvinylpyrrolidone (PVP) was added in order to make the nanoporous membrane surface hydrophilic for escalating the filtration performance rate and stainability. Two different water samples (dam water and city wastewater) were used in this study. For dam water sample, the parameter such as, PH, turbidity, TDS, conductivity, Ca++, Mg++, hardness, sulfates, nitrates, fluoride, chloride, alkalinity and silica were measured and found out to be 7.5, 24.33 NTU, 2526 mg/l, 5049 µS/cm, 111 mg/l, 57.76 mg/l, 447 mg/l of CaCO 3 , 78.17 mg/l, 2.98 mg/l, 1.05 mg/l, 1862.96 mg/l, 137.7 mg/l and 85.27 mg/l, respectively. Similarly, for wastewater sample, the parameters such as, PH, turbidity, TDS, conductivity, TSS, COD, BOD5, phosphate, ammonia, oil-greases and DO were measured and found out to be 7.7, 7.7 NTU, 1507.33 mg/l, 30122 µS/cm, 6 mg/l, 38.33 mg/l, 7.67 mg/l, 36.03 mg/l, 18.33 mg/l, 0 mg/l and 6.85mg/l, respectively.

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Highly Hydrophilic Electrospun Polyacrylonitrile/ Polyvinypyrro-lidone Nanofibers Incorporated with Gentamicin as Filter Medium for Dam Water and Wastewater Treatment

Cited by 45 publications

References 53 publications

High-Efficiency Water Filtration by Electrospun Expanded Polystyrene Waste Nanofibers

High-Efficiency Water Filtration by Electrospun Expanded Polystyrene Waste Nanofibers

Polymeric Systems for the Controlled Release of Flavonoids

Water Treatment using Electrospun PVC/PVP Nanofibers as Filter Medium

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