Department of Chemistry: Recent submissions
Now showing items 41-60 of 3029
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Penggunaan Adsorben Carbonated Hydroxypatite (CHA) Berbahan Biowaste Cangkang Kerang Hijau (Perna viridis) dalam Analisa 3,4-Methylenedioxymethamphetamine menggunakan GCMS
(Universitas Sumatera Utara, 2025)Green mussels produce shell waste that negatively impacts the environment. Green mussel shells contain 99.5% calcium. According to data from the North Sumatra Regional Police (Polda Sumut) up to July 2024, there were 2,400 ... -
Sintesis Hijau Nanopartikel TiO2 dari Titanium Tetraisopropoksida Doping Barium menggunakan Ekstrak Daun Kelapa Sawit sebagai Fotokatalis
(Universitas Sumatera Utara, 2025)A study was conducted on the green synthesis of TiO2. This research aimed to green synthesis TiO2 using titanium tetraisopropoxide with palm leaf extract and barium doping to reduce the band gap energy in the degradation ... -
Selektivitas dan Sensitivitas Nitrogen-Doped Carbon Dots Berbasis D-Glukosa Monohidrat yang Disintesis dengan Metode Hidrotermal untuk Deteksi Ciprofloxacin
(Universitas Sumatera Utara, 2025)Peningkatan penggunaan ciprofloxacin (CIP), antibiotik golongan kuinolon, di Indonesia dan global menimbulkan kekhawatiran terhadap resistensi antimikroba dan kontaminasi lingkungan akibat residu obat yang tidak sepenuhnya ... -
Modifikasi Pati Ubi Jalar Putih Melalui Reaksi Oksidasi Menggunakan Natrium Hipoklorit
(Universitas Sumatera Utara, 2025)Modification of white sweet potato starch were carried out through an oxidation reaction between white sweet potato starch (Ipomoea Batatas Linneaus) and sodium hypochlorite (NaOCl). This research was conducted in two ... -
Optimalisasi Produksi Bio-Oil Melalui Co-Pirolisis Tandan Kosong Kelapa Sawit dan Asam Oleat dengan Katalis Ni-Fe/Karbon Aktif
(Universitas Sumatera Utara, 2025)The continuously increasing global energy demand and the limited fossil resources had driven the development of renewable energy, one of which was bio-oil from biomass pyrolysis. This study aimed to optimize bio-oil ... -
Sintesis dan Karakterisasi Superabsorben Polimer Berbasis Natrium Karboksimetil Selulosa dan Hidroksietil Metil Selulosa Menggunakan Agen Ikat Silang Asam Adipat
(Universitas Sumatera Utara, 2025)This study examines the synthesis of polymer superabsorbent from sodium carboxymethyl cellulose (Na-CMC) and hydroxyethyl methyl cellulose (HEMC) with adipic acid crosslinking agent. The synthesis of polymer superabsorbent ... -
Analisis Membran Selulosa Asetat Dengan Penambahan Karbon Aktif Termodifikasi Kitosan Penaeus monodon Sebagai Filter Air Dalam Menurunkan Kadar Kromium Heksavalen
(Universitas Sumatera Utara, 2025)Cellulose acetate membranes have relatively low selectivity for heavy metals, particularly hexavalent chromium, achieving only 47.2%. Therefore, the addition of organic or inorganic components is necessary during the ... -
Kinerja Resin Kopolimer Poli(stirena-co-divinilbenzena) Sulfonat sebagai Katalis Heterogen dalam Sintesis Biodiesel dari Asam Oleat melalui Reaksi Esterifikasi
(Universitas Sumatera Utara, 2025)This study aims to synthesize and evaluate the performance of sulfonated poly(styrene-co-divinylbenzene) copolymer resin as a heterogeneous catalyst in the esterification reaction of oleic acid with methanol for biodiesel ... -
Sintesis dan Karakterisasi Material ZIF-67 Terenkapsulasi ZIF-8 sebagai Adsorben Kromium (VI) dengan Vari
(Universitas Sumatera Utara, 2025)Chromium is one of the heavy metals used in the textile industry. Chromium metal (especially hexavalent chromium) has high toxicity and is difficult to degrade in the aquatic environment. Nowadays, adsorption technique ... -
Pengaruh Elektrolit Natrium Klorida terhadap Kinerja Elektroda Grafena Berlapis Nano pada Katoda Baterai Primer
(Universitas Sumatera Utara, 2025)This study aims to investigate the effect of sodium chloride (NaCl) electrolyte concentration on the performance of graphene nanosheet (GBN) electrodes synthesized from candlenut shells as the cathode material in primary ... -
Pembuatan Metil Oleat dari Esterifikasi Asam Oleat dengan Metanol pada Perbandingan Waktu Reaksi dan Kecepatan Pengadukan Peralatan Pendispersi Homogen
(Universitas Sumatera Utara, 2025)The production of methyl oleate from oleic acid and methanol has been carried out through esterification reaction using lipase enzyme as a catalyst and homogenizer stirring. The parameters studied in this study were reaction ... -
Sintesis Biopelumas Ester dari Minyak Goreng Bekas dan Pentaeritritol Menggunakan Green Catalyst/Solvent dan Optimasinya dengan Desain Box-Behnken
(Universitas Sumatera Utara, 2025)Ester biolubricant has been synthesized from waste cooking oil (WCO) and pentaerythritol by using catalyst and solvent Deep Eutectic Solvents (DESs) and homogenizer. WCO refinery was by addition of 0.05% (v/v) H3PO4 and ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol Pada Variasi Waktu Reaksi dan Kecepatan Pengadukan
(Universitas Sumatera Utara, 2025)The synthesis of methyl oleate was carried out through the esterification reaction of oleic acid and methanol using a K₂O/Zeolite catalyst with a homogeneous dispersing stirrer to determine the optimal conditions for ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Rasio Mol dan Konsentrasi Katalis Green Chemistry Deep Eutetic Solvent (DES))
(Universitas Sumatera Utara, 2025)The synthesis of methyl oleate from esterification reactions between oleic acid and methanol used green chemistry deep eutectic solvent (DES) catalyst using homogenizer. DES catalyst is prepared by mixing of choline chloride ... -
Pemanfaatan Ekstrak Kasar Enzim Lipase dari Kecambah Biji Karet (Hevea brasiliensis) sebagai Bahan Aditif Biodetergen
(Universitas Sumatera Utara, 2025)This study aimed to determine the activity of lipase enzyme from rubber seed (Hevea brasiliensis) sprouts and evaluate its application as an additive in biodetergent formulation. The method used in this study included the ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Pirdot (Saurauia vulcani Korth.)
(Universita Sumatera Utara, 2025)Isolation and identification of flavonoid compound from the bark of Pirdot (Saurauia vulcani Korth.) had been carried out through the maceration extraction stage with methanol solvent. The methanol extract dissolved with ... -
Pemanfaatan Ekstrak Kasar Enzim Lipase dari Kecambah Biji Jarak Pagar (Jatropha Curcas L.) Sebagai Bahan Aditif Biodetergen
(Universitas Sumatera Utara, 2025)The use of synthetic detergents has caused serious environmental problems due to waste that is difficult to decompose. Utilization of lipase enzymes from castor bean sprouts (Jatropha curcas L.) is one potential solution ... -
Peranan Pengikat Na-CMC terhadap Karakteristik Fisikokimia dan Kapasitansi Spesifik Elektroda Hibrida rGO/Co3O4 Sebagai Material Superkapasitor
(Universitas Sumatera Utara, 2025)The increasing global energy demand drives the development of efficient and sustainable energy storage technologies. Supercapacitors are considered a promising solution due to their high power density and long-term stability, ... -
Sintesis Metil Eugenol Melalui Reaksi Eterifikasi pada Variasi Mol Natrium Karbonat dan Dimetil Karbonat
(Universitas Sumatera Utara, 2025)The synthesis of methyl eugenol has been carried out through the etherification reaction of eugenol with dimethyl carbonate (DMC) using sodium carbonate (Na₂CO₃) as a basic agent and tetrabutylammonium bromide (TBAB) as a ... -
Modifikasi Pati Sukun (Artocarpus altilis) Melalui Reaksi Oksidasi dengan Oksidator Asam Nitrat
(2025)Modification of breadfruit starch into carboxylate starch has been carried out through an oxidation reaction between breadfruit starch (Artocarpus altilis) and nitric acid. The oxidation reaction was carried out with ...