Department of Chemistry: Recent submissions
Now showing items 221-240 of 3020
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Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Beringin Cina (Ficus Microcarpa L.f.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound from beringin cina (Ficus microcarpa L.f.) leaves has been carried out starting with maceration extraction with methanol solvent. The concentrated methanol extract was ... -
Konversi Pelepah Sawit dan Plastik HDPE menjadi Bio-Oil melalui Proses Ko-Pirolisis menggunakan Katalis Mordenit berbasis Oksida Logam Cu dan Zn
(Universitas Sumatera Utara, 2024)Bio-oil is produced from the thermal decomposition of palm oil frond waste biomass to be used as an alternative raw material source. However, it has weaknesses in its physical and chemical properties such as a high ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Jeruk Bali Putih (Citrus Grandis L Osbeck)
(Universitas Sumatera Utara, 2024)The flavonoid compounds had been from the bark of the white Bali orange plant (Citrus grandis L. Osbeck). Isolation was carried out by maceration extraction mrthod with mrthanol and methanol extract was re-extracted with ... -
Aktivitas Antioksidan dan Antibakteri dari Ekstrak Daun Eucalyptus (Eucalyptus pellita) serta Isolasi Senyawa Flavonoid
(Universitas Sumatera Utara, 2024)Eucalyptus pellita is one of the species from the Myrtaceae family that is considered a potential allelopath. This study aims to test the bioactivity and isolate flavonoid compound from E. pellita leaf extract. E. pellita ... -
Analisis Morfologi, Kristalinitas, dan Rendemen Grafena Berlapis Nano dari Tempurung Kelapa (Cocos nucifera L.)
(Universitas Sumatera Utara, 2023)Research on morphology analysis, crystallinity and yield of Graphene Nano Sheets from coconut shells using the pyrolysis method has been carried out. The use of coconut shell in this research is because it contains 33,61 ... -
Analisis Morfologi, Kristalinitas, dan Rendemen Grafena Berlapis Nano dari Cangkang Kemiri (Aleurites moluccana (L.) Willd)
(Universitas Sumatera Utara, 2023)Penelitian tentang analisis morfologi, kristalinitas dan rendemen Grafena Berlapis Nano (GBN) dari cangkang kemiri dengan metode pirolisis telah dilakukan. Cangkang kemiri memiliki kandungan hemiselulosa 49,22 dan lignin ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Tumbuhan Jeruk Purut (Citrus hystryx D.C)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compounds from the bark of the kaffir lime plant (Citrus hystrix DC) begins with the maceration extraction stage with methanol solvent. The methanol extract was evaporated and ... -
Sintesis Metil Ester dari Minyak Kelapa Sawit Menggunakan Kat Alis Heterogen Abu Kulit Durian pada Variasi Waktu Reaksi dan Kecepatan Pengadukan Pendispersi Homogen
(Universitas Sumatera Utara, 2023)The synthesis of fatty acid methyl esters has been carried out through the transesterification of palm oil and methanol using durian peel ash as a heterogeneous catalyst. Durian skin powder was oven dried at 600°C for ... -
Sintesis Metil Ester Minyak Kelapa Sawit pada Variasi Berat Katalis Abu Kulit Kakao dan Kecepatan Pengadukan Menggunakan Alat Pendispersi Homogen
(Universitas Sumatera Utara, 2024)Methyl ester from palm oil have been synthesized through a transesterification reaction using cacao shell ash as a heterogeneous catalyst. Cocoa shell powder was analyzed using TGA, then calcined at 750oC for 4 hours,then ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Rasio Molar dan Daya Microwave Menggunakan Katalis Abu Kulit Telur Ayam
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate from esterification reactions between oleic acid and methanol using chicken eggshell ash catalyst using microwave. Chicken eggshell powder analyzed using Thermogravimetric Analysis (TGA), ... -
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 ...