Composite Membrane Based on Sulfonated Polysulfone-Natural Zeolite-Titanium Dioxide

Gustian, Irfan; Ghufira,; Oktiarni, D .

doi:10.31788/rjc.2019.1215010

Cited by 7 publications

(5 citation statements)

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“…Namun, membran PVDF murni memiliki sifat hidrofobik, yang menyebabkan interaksi yang lemah dengan air tetapi interaksi yang kuat dengan molekul kontaminan, yang merupakan kelemahan utama dalam aplikasi praktis p-ISSN : 2528-3561 e-ISSN : 2541-1934 [3]. Untuk itu, berbagai metode digunakan untuk meningkatkan kinerja membran, di antaranya peningkatan hidrofilisitasnya melalui penambahan komponen hidrofilik [4][5][6] [7].…”

Section: Pendahuluanunclassified

Pengaruh Penambahan Brij35 serta Methacryloyloxylethyl Phosphoryl Choline terhadap Karakteristik dan Kinerja Membran

Wahab,

Muchtar,

Arahman

et al. 2023

JSE

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Artikel ini melaporkan tentang karakteristik dan kinerja dari membran polyvinylidene fluoride (PVDF) yang dimodifikasi dengan memadukan surfaktan nonionik dan aditif zwitterionik melalui metode nonsolvent-induced phased separation (NIPS). Modifikasi ini bertujuan untuk meningkatkan sifat hidrofilisitas dan kinerja membran. Membran PVDF modifikasi dibuat dengan penambahan 5 gram Brij-35 dan variasi Methacryloyloxylethyl phosphorylcholine (MPC) sebanyak 0,5 dan 1 gram sebagai aditif, menggunakan pelarut N, N-dimethylacetamide (DMAc) dan non-pelarut berupa akuades. Pengaruh penambahan aditif ke dalam sistem membran dianalisis dengan mengamati perubahan struktur morfologi membran menggunakan SEM, tingkat hidrofilisitas membran diuji dengan mengukur sudut kontak air pada permukaan membran. Selain itu membran juga diuji kinerja filtrasinya menggunakan modul cross-flow. Filtrasi dilakukan pada tekanan operasi 1 bar. Kemudian untuk pengujian rejeksi, digunakan larutan asam humus sebagai model kontaminannya. Kinerja filtrasi membran menggunakan sampel air murni menghasilkan nilai fluks maksimal pada membran yang dimodifikasi dengan penambahan Brij35-5. Namun, selektivitas yang dihasilkan menurun dari 96% (pure PVDF) menjadi 76%. Di sisi lain, membran yang dimodifikasi dengan penggabungan aditif mampu menghasilkan kinerja yang lebih baik yaitu dengan nilai fluks sebesar 126 L/m2h dan mampu merejeksi asam humus sebesar 90%.

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Section: Pendahuluanunclassified

Pengaruh Penambahan Brij35 serta Methacryloyloxylethyl Phosphoryl Choline terhadap Karakteristik dan Kinerja Membran

Wahab,

Muchtar,

Arahman

et al. 2023

JSE

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“…There are strong bands around at 1100 and 799, which correspond to stretching asymmetric, symmetric stretching of T-O, respectively [28]. The absorption band at 468 cm -1 refers to the bending vibration of T-O-T [29]. The band at 3400 cm -1 corresponds to OH stretching vibration bound to Si or Al, as well as the adsorbed H 2 O molecule on the MSA surface [23].…”

Section: Characterization Of Msa and Catalysts Preparedmentioning

confidence: 99%

Hydrotreatment of Cellulose-Derived Bio-Oil Using Copper and/or Zinc Catalysts Supported on Mesoporous Silica-Alumina Synthesized from Lapindo Mud and Catfish Bone

2020

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Catalysts comprising copper and/or zinc supported on mesoporous silica-alumina (MSA) with a high Si/Al ratio were prepared by wet impregnation method. This study investigated the preparation, characterization, and catalytic application of the prepared catalysts for hydrotreatment cellulose-derived bio-oil. The wet impregnation was performed by directly dispersing Cu(NO3)2·3H2O and/or Zn(NO3)2·4H2O aqueous solution into MSA, followed by calcination and reduction under H2 gas stream. The acidity test revealed that metal addition on MSA support increases the acidity of catalysts. During hydrotreatment of cellulose-derived bio-oil CuZn/MSA with total acidity, copper loading, zinc loading, and specific surface area of 24.86 mmol g–1, 5.23 wt.%, 3.15 wt.%, and 170.77 m2 g–1, respectively, exhibited the best performance compared to other prepared catalysts with 90.49 wt.% conversion of liquid product.

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“…Therefore, the study of the technology of obtaining new water-soluble polymers for the development of agriculture is a requirement of the time. [1][2][3] To this end, this work has studied the effectiveness of hydrophobic, hydrophobic, absorbing moisture, with the addition of effective fertilizers for agriculture, based on their propensity to temperature. Due to the lack of macro-and microelements in the soil, the yield of plants is reduced and the quality is reduced.…”

Section: Introductionmentioning

confidence: 99%

Development of Complex Fertilizer Technology With Improved Agrochemical Properties Using Hydrogel

Omirova¹,

Bolysbek²,

Shirinov³

et al. 2020

RJC

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The article presents the results of obtaining hydrogels based on polyacrylonitrile, with potassium-phosphorus fertilizers in the composition used as agricultural fertilizers. As a potassium-phosphate fertilizer used fertilizerpotassium dehydrogenase orthophosphate. Comparative analysis was carried out using the obtained hydrogel cultures of wheat, safflower and barley. It is established that the polymer hydrogel containing potassium and phosphorus increases the moisture content of the soil, improves its water-retaining properties, improves the process of air exchange, increases the water-resistance of soil aggregates, and increases the productivity of plants while reducing the amount of polymer hydrogel per hectare. In this work, it was obtained a hydrogel containing potassium, magnesium and phosphorus impregnated by mixing with the addition of the same amount of the hydrogel, with the addition of soluble caliciviridae and magnetohydrostatic. In the drying Cabinet, increased twice the volume obtained, dried for two hours at a temperature of 90-95 0 C. Several samples containing potassium, magnesium and phosphorus were sampled for plants.

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Composite Membrane Based on Sulfonated Polysulfone-Natural Zeolite-Titanium Dioxide

Cited by 7 publications

References 0 publications

Pengaruh Penambahan Brij35 serta Methacryloyloxylethyl Phosphoryl Choline terhadap Karakteristik dan Kinerja Membran

Pengaruh Penambahan Brij35 serta Methacryloyloxylethyl Phosphoryl Choline terhadap Karakteristik dan Kinerja Membran

Hydrotreatment of Cellulose-Derived Bio-Oil Using Copper and/or Zinc Catalysts Supported on Mesoporous Silica-Alumina Synthesized from Lapindo Mud and Catfish Bone

Development of Complex Fertilizer Technology With Improved Agrochemical Properties Using Hydrogel

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