Department of Chemistry: Recent submissions
Now showing items 281-300 of 3020
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Pembuatan Metil Ester Asam Lemak dari Larva Lalat Tentara Hitam (Black Soldier Fly) melalui Reaksi in Situ Transesterifikasi Menggunakan Peralatan Penghancur Terkontrol
(Universitas Sumatera Utara, 2023)Production of fatty acid methyl esters / biodiesel from black soldier fly larvae has been explopred through in-situ transesterification reaction BSF larvae on parameters catalysts concentration, reaction time, ratio of BSF ... -
Pembuatan Setil Palmitat dari Reaksi Esterifikasi Setil Alkohol dan Asam Palmitat Menggunakan Katalis Enzim Lipase dan Radiasi Mikrowave
(Universitas Sumatera Utara, 2023)Preparation of cetyl palmitate from palmitic acid and cetyl alcohol esterification with commercial lipase enzyme catalyst and reacting it with microwaves has been carried out. The parameters used in this study are the ... -
Karakterisasi Termal dari Modifikasi Aspal dengan Limbah Plastik Polietilena Grafting Maleat Anhidrat dan Inisiator Dikumil Peroksida
(Universitas Sumatera Utara, 2023)Research on the thermal characteristics of asphalt modification with polyethylene (PE) plastic waste grafted with maleic anhydrous and dicumyl peroxide initiator. This research uses 3 stages, the first stage, the used ... -
Sintesis Isopropil Palmitat dari Esterifikasi Isopropil Alkohol dan Asam Palmitat pada Perbandingan Waktu Reaksi dan Kekuatan Mikrowave Menggunakan Katalis Enzim Lipase
(Universitas Sumatera Utara, 2023)Synthesis of isopropyl palmitate from the esterification of isopropyl alcohol and palmitic acid using a lipase enzyme catalyst has been performed using microwave radiation. The parameters studied in this study were the ... -
Pembuatan Isopropil Palmitat dari Esterifikasi Isopropil Alkohol dan Asam Palmitat pada Perbandingan Rasio Molar dan Berat Enzim Lipase Menggunakan Kekuatan Mikrowave
(Universitas Sumatera Utara, 2023)The preparation of isopropyl palmitate (!PP) from palmitic acid and isopropyl alcohol through an esterification reaction under microwave irradiation and catalyzed by enzyme lipase has been studied. The parameters in this ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik serta Uji Aktivitas Antibakteri dari Kulit Batang Tumbuhan Pucuk Merah (Syzygium myrtifolium Walp.)
(Universitas Sumatera Utara, 2023)The phenolic compound had been isolated from the stem bark of Pucuk Merah (Syzygium myrtifolium Walp. Isolation was carried out by maceration extraction method with methanol and methanol extract was re-extracted with ethyl ... -
Sintesis dan Karakterisasi Karboksimetil Kitosan dengan Nanogold dalam Sediaan Moisture Gel sebagai Whitening Agent
(Universitas Sumatera Utara, 2023)The development of cosmetics from time to time has made significant advances, especially in the preparation of moisture in gel form. Moisture gel is a semisolid system consisting of a suspension made up of small organic ... -
Karakterisasi Paduan EPDM/NR SIR-20 dengan Pengisi Serbuk Cangkang Kerang Darah (Anadara granosa) sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2023)Research on composites from the EPDMINR SJR-20 alloy with the addition of blood cockle shell powder as a filler material which is applied as a vehicle door impact absorber (weather strip). Making weather strips is done ... -
Karakterisasi Paduan EPDM /NR dengan Pengisi Serbuk Cangkang Telur Bebek sebagai Peredam Benturan Pintu Kendaraan Roda Empat
(Universitas Sumatera Utara, 2023)The Composite of Ethylene Propylene Diene Monomer alloy with Natural Rubber (EPDM I NR) which is then added duck egg shell powder as a filler material which is applied as a four-wheeled vehicle door impact absorber. The ... -
Ekstraksi Etanol pada Cairan Lambung Mencit Jantan Putih (Mus-musculus) dengan Metode Headspace - Single Drop Microekstraction (HS-SDME) dan Analisis Menggunakan Gas Chromatography (GC)
(Universitas Sumatera Utara, 2023)Ethanol is one of the compounds found in the composition of liquor or the like, with the chemical formula C:H&O. This substance is contained in several types of alcohol, which are produced naturally and industrially using ... -
Pengaruh Variasi Massa Stronsium Oksida Diimpregnasi pada Mesopori Silika sebagai Katalis Reaksi Transesterifikasi Minyak Jarak
(Universitas Sumatera Utara, 2023)Research has been carried out regarding the impregnation of SrO on mesoporous sifica synthesized using templating anionic surfactants. Impregnation was carried out by varying the mass of Sro on mesoporous silica, ... -
Pengaruh NaOH dan Katalis Coal Fly Ash dalam Proses Perengkahan Katalitik Minyak Sawit Mentah (CPO) Menjadi Bahan Bakar Hidrokarbon
(Universitas Sumatera Utara, 2023)Fossil oil reserves are decreasing due to the increase in population and the non- renewable nature of fossil oil, so it is necessary to develop alternative fuels that are environmentally friendly to replace petroleum (fossil ... -
Pembuatan Metil Ester Asam Lemak dari Minyak Biji Teh (Camellia sinensis L.) melalui Reaksi Trans-Esterifikasi dan Pengujian Karakteristik Biodiesel
(Universitas Sumatera Utara, 2023)The production of fatty acid methyl esters (FAME) from tea seed oil (Camellia sinensis L.) through the transesterification reaction has been successfully carried out. Tea seed oil extraction was carried out using n-Hexane ... -
Modifikasi Campuran Aspal dengan Limbah Plastik High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE) dan Polystyrene (PS) yang Tergrafting Glasidil Methacrylate (GMA) dengan Metode Internal Mixer terhadap Parameter Uji Marshall
(Universitas Sumatera Utara, 2023)This research was carried out by utilizing plastic waste of the type Polystyrene (PS), High Density Polyethylene (HDPE) and low density polyethylene (LDPE) for mixing asphalt. The first thing to do is purify plastic waste ... -
Sintesis Bio-Pelumas 2-Etilheksil Oleat dari Asam Oleat dan 2-Etil Heksanol dengan Katalis Amberlis-46 Menggunakan Radiasi Microwave
(Universitas Sumatera Utara, 2023)The synthesis of 2-ethylhexyl oleate from the esterification reaction of oleic acid and 2-ethylhexanol with the Amberlis-46 catalyst using microwave radiation has been carried out. The parameters of the molar ratio of ... -
Pengaruh Variasi Massa Katalis MgO/Mesopori Silika Hasil Impregnasi yang Digunakan pada Transesterifikasi Minyak Jarak
(Universitas Sumatera Utara, 2023)The effect of MgO on the impregnation of mesoporous silica and its application as a catalyst in castor oil transesterification by varying the mass of catalyst used has been studied. Mesoporous silica was synthesized from ... -
Preparasi dan Karakterisasi Polivinilklorida Termodifikasi Anhidrida Maleat dan Butil Akrilat dengan Pengisi Sepiolite dan Organo-Sepiolite sebagai Bahan Kabel Tahan Panas
(Universitas Sumatera Utara, 2023)This research investigates the influence of using magnesium oxide (MgO) and sepiolite fillers in PVC blends and modification with maleic anhydride and butyl acrylate comonomers (AM/BA) on the properties of PVC blends. The ... -
Isolasi dan Identifikasi golongan senyawa flavonoid dari Kulit Batang Goring- Goring (Glochidion Rubrum Blume)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound from the bark of goring-goring (Glochidion rubrum Blume) had been carried out through the maceration extraction stage with methanol solvent. The methanol extract is ... -
Sintesis Isopropil Miristat dari Isopropil Alkohol dan Asam Miristat pada Perbandingan Rasio Molar dan Berat Enzim Lipase Menggunakan Radiasi Mikrowave
(Universitas Sumatera Utara, 2023)The production of isopropyl myristate througli the esterification reaction of myristic acid with, iso prop)1l alcohol has been carried oi t using the lipase en.zyme as a biocatalyst with microwave radiation. ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Kimerah (Flueggea Virosa (Roxb. Ex Willd.) Royle)
(Universitas Sumatera Utara, 2023)Isolation and identification of flavonoid compound from stem bark of kimerah (Flueggea virosa (Roxb. ex Willd.) Royle) have been carried out by maceration extraction using methanol as a solvent. The concentrated methanol ...