Department of Chemistry: Recent submissions
Now showing items 121-140 of 2910
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Sintesis Metil Ester Minyak Kelapa Sawit Mengggunakan Katalis Abu Kulit Kakao pada Variasi Waktu dan Rasio Molar Menggunakan Pendispersi Homogen
(Universitas Sumatera Utara, 2024)Methyl ester from palm oil (RBD palm olein) has been synthesized through a transesterification reaction using cocoa shell ash (Theobroma cacao) as a heterogeneous catalyst. Cocoa shell powder was analyzed using ... -
Pembuatan Metil Ester Asam Lemak dari Sludge Palm Oil Menggunakan Katalis Lipase pada Perbandingan Waktu Reaksi dan Pengaruh Daya Mikrowave
(Universitas Sumatera Utara, 2024)Preparation of fatty acid methyl esters from palm oil sludge has been carried out through esterification-transesterification reaction using lipase enzyme as biocatalyst with the help of microwave heating. The reaction time ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik dari Daun Sigar Jalak (Flueggea virosa (Roxb. Ex Willd.) Royle)
(Universitas Sumatera Utara, 2023)The phenolic compound had been isolated from the leaves of sigar Jalak (Flueggea virosa (Roxb. Ex Willd.) Royle. Isolation was carried out by maceration extraction method with methanol and methanol extract was re extracted ... -
Sintesis Arang Aktif dari Cangkang Kelapa Sawit sebagai Adsorben dalam Penurunan Logam Besi (Fe) pada Air Sumur Bor
(Universitas Sumatera Utara, 2024)This research aims to analyze the iron metal content in drilled well water in the Medan-Pancing area and use palm oil shell activated carbon to reduce the iron (Fe) metal content in drilled well water. To see the effect ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Sabut Kelapa Wulung (Cocos nucifera L.)
(Universitas Sumatera Utara, 2023)Isolation and identification of flavonoid compound from wulung coconut fiber (Cocos nucifera L.) had been carried out through the maceration stage with methanol solvent. The methanol extract is concentrated, then the ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoid dari Kulit Batang Perepat (Sonneratia alba Sm.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound from the bark of perepat (Sonneratia alba Sm.) had been carried out through the maceration extraction with methanol solvent. The methanol extract is concentrated, then ... -
Optimasi Temperatur Kalsinasi Kalsium Karbonat (CaCO3) dari Cangkang Telur Ayam Ras dan Aplikasinya untuk Adsorpsi Ion Logam Mn2+
(Universitas Sumatera Utara, 2023)Research on temperature variations in calcium carbonate (CaCO3) from eggshells of purebred chickens and their application to the adsorption of Mn 2+ metal ions has been carried out. The adsorption ability of the adsorbent ... -
Pembuatan Green Diesel dari Perengkahan Katalitik Miyak Jelantah Menggunakan Katalis Bentonite
(Universitas Sumatera Utara, 2024)Until today, 86% of the world's energy is still supplied from fossil fuel. Fossil fuel are an energy source that will depleted, so it is necessary to look for alternative energy sources that are sustainable and cheap. ... -
Pengaruh Variasi Konsentrasi NaOH terhadap Nilai Kalor Briket Arang Tandan Kosong Kelapa Sawit
(Universitas Sumatera Utara, 2024)Research has been conducted on the effect of NaOH concentration on the calorific value of oil palm empty fruit bunch charcoal briquettes. NaOH solution is used as a pretreatment material for oil palm empty fruit bunches ... -
Pengaruh Penambahan Asam Borat dan Boraks sebagai Bahan Penghambat Api pada Pembuatan Papan Komposit Kayu Plastik dari Polipropilena-Serbuk Pelepah Pinang
(Universitas Sumatera Utara, 2024)This study examines the effect of adding boric acid and borax as flame retardants on the manufacture of wood plastic composite from polypropylene (PP)- areca nut frond powder (SPP). The research was carried out in four ... -
Modifikasi Pati Sukun (Artocarpus Altilis) melalui Reaksi Esterifikasi dengan Asam Palmitat dalam Media Larutan Naoh/Urea
(Universitas Sumatera Utara, 2024)Palmitic starch was obtained from breadfruit starch (Artocarpus altilis) modified through esterification reaction using palmitic acid in NaOH/Urea solution media. This research was conducted in two stages, namely, isolation ... -
Analisis Kandungan Logam dan Mineral pada Road Deposited Sediment (RDS) dari Mobil Road Sweeper Berdasarkan Perbedaan Ukuran Partikel
(Universitas Sumatera Utara, 2024)A study was conducted to identify the metal and mineral content of Road Deposited Sediment (RDS) from street sweepers based on differences in particle size. RDS is a combination of natural sediments including soil ... -
Konversi Pelepah Sawit dan Plastik HDPE menjadi Bio-Oil melalui Proses Co-Pirolisis Menggunakan Katalis Zeolit Mordenit Diimpregnasi Logam Co dan Fe
(Universitas Sumatera Utara, 2024)Bio-oil derived from the thermal decomposition of waste biomass from oil palm fronds has the potential to be utilized as an alternative energy raw material source. However, its physical and chemical properties have ... -
Sintesis Metil Oleat dari Asam Oleat dengan Metanol pada Variasi Waktu dan Berat Katalis Abu Kulit Durian Menggunakan Radiasi Microwave
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate from esterification oleic acid with methanol using calcined durian peel ash as catalyst under microwave irradiation. Durian powder was calcinated at 600 ˚C for 4 hours. The main component of ... -
Sintesis Kardanil Metil Eter melalui Eterifikasi Kardanol dari Kulit Biji Jambu Mete (Anacardium Occidentale L.) pada Variasi Jumlah Katalis Tetrabutilamonium Bromida
(Universitas Sumatera Utara, 2024)Synthesis of cardanyl methyl ether was carried out through an etherification reaction between cardanol isolated from Cashew Nut Shell Liquid (CNSL) and dimethyl carbonate. Cardanol isolation was carried out by adding ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Nam-Nam (Cynometra Caulifora L.)
(Universitas Sumatera Utara, 2024)Isolation of flavonoid compound from stem bark of nam-nam (Cynometra caulifora L.) had been carried out through the extracted maceration with methanol solvent, then re-extracted with ethyl acetate, partitioned extracted ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Biji Palem Palas Payung (Licuala Grandis (T.Moore) H.Wedl.)
(Universitas Sumatera Utara, 2024)Palas payung palm (Licuala grandis (T.Moore) H.Wedl.) is a plant of the palm family (Arecaceae) that has long been used by the community to treat diarrhea, worms, boils, and as a natural dye. Isolation and identification ... -
Efektivitas dan Formulasi Kitosan Oligosakarida pada Sediaan Shampo Anti Rontok dengan Aktivitas Antimikroba Candida Albicans
(Universitas Sumatera Utara, 2024)Chitosan has many functions that are developed in various fields and products. One of the interesting functional properties of chitosan is as an antimicrobial by the interaction between chitosan and the outer cell membrane ... -
Sintesis Kardanil Metil Eter melalui Reaksi Eterifikasi Kardanol Hasil Isolasi Kulit Biji Jambu Mete (Anacardium occidentale L.) dengan Variasi Molar Dimetil Karbonat
(Universitas Sumatera Utara, 2024)Synthesis of cardanyl methyl ether was carried out through an etherification reaction between cardanol isolated from cashew seed shell extract (CNSL) and dimethyl carbonate.Cardanol isolation was carried out by adding ... -
Formulasi Sediaan Hair Tonic Kitosan Oligosakarida dengan Karboksimetil Kitosan sebagai Antijamur terhadap Penyebab Ketombe (Malassezia Globosa)
(Universitas Sumatera Utara, 2024)Research has been conducted on the use of oligosaccharide chitosan and carboxymethyl chitosan in the formulation of hair tonic preparations as antifungal against the cause of dandruff (Malassezia globosa). Hair tonic is ...