Department of Chemistry: Recent submissions
Now showing items 101-120 of 2907
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Analisis Mutu Mi dari Tepung Mocaf dan Pati Biji Nangka (Artocarpus Heterophyllus Lamk.) Termodifikasi dengan Penambahan Garam Fosfat
(Universitas Sumatera Utara, 2024)Noodles are a type of food made from wheat flour derived from wheat. However, due to the limited supply of wheat, food diversification is carried out by substituting the raw materials for noodles from mocaf flour and ... -
Efektivitas Nitrogen-Doped Carbon Dots (N-CDs) dengan Metode Solvotermal dari Kulit Nangka sebagai Fotodegradasi Kongo Merah
(Universitas Sumatera Utara, 2024)Dyes have become a significant source of water pollution, with percentages 1-15 of dye lost as pollutants during the dyeing process. One of the dyes usually used by textile induction is Congo Red (CR). The solution is ... -
Sintesis Nitrogen-Doped Carbon Dots (N-CDs) dengan Metode Hidrotermal dari Kulit Nangka sebagai Fotodegradasi Rhodamin B
(Universitas Sumatera Utara, 2024)Nitrogen-Doped Carbon dots are fluorescent nanoparticles that can be synthesized from biomass. Jackfruit peel is a biomass waste containing 42.20% carbon which can be used as a precursor to synthesis carbon dots and ... -
Analisis Potensi Adsorben Berbahan Dasar Karboksimetil Selulosa dan GUAR GUM terhadap Penyerapan Metilen Biru Menggunakan Isoterm Adsorpsi Freundlich dan Langmuir
(Universitas Sumatera Utara, 2024)The research on the adsorption capacity of methylene blue using adsorbents based on carboxymethyl cellulose (CMC) and guar gum has been conducted. This study aimed to determine the equilibrium time of methylene blue ... -
Karakteristik Paduan Karet EPDM/NR SIR-20 dengan Pengisi Arang Aktif Cangkang Kelapa Sawit sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2024)The composite used as a four-wheeled vehicle door impact damper (weather strip) is made from a mixture of synthetic rubber Ethylene Propylene Diene Monomer (EPDM) with Natural Rubber SIR-20 (NR SIR-20) which is added with ... -
Analisis Morfologi, Kristalinitas, dan Daya Hantar Listrik Grafena Berlapis Nano dari Tempurung Kelapa (Cocos Nucifera L.) dengan Metode Pirolisis
(Universitas Sumatera Utara, 2024)Research on the morphology, crystallinity, and electrical conductivity analysis of coconut shell (Cocos nucifera L.) graphene nano sheet using pyrolysis method was conducted. The purpose of this study was to analyze ... -
Efektivitas Carbon Dots dari Limbah Plastik Polyethylene Terephthalate sebagai Fotodegradasi Methylene Blue di Bawah Radiasi Sinar UV
(Universitas Sumatera Utara, 2024)The high use of plastic bottles as drinking water packaging results in the production of plastic bottle waste. In general, the materials used to make plastic bottles are made from polyethylene Terephthalate (PET) polymer ... -
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 ...