Department of Chemistry: Recent submissions
Now showing items 41-60 of 3053
-
Analisis Pupuk Tabur Dengan Variasi Penambahan Asam Humat Terhadap Pertumbuhan Sawi Hijau (Brassica juncea L.)
(Universitas Sumatera Utara, 2025)Research on the analysis of the effect of varying humic acid additions to granular fertilizer on the growth of mustard greens (Brassica juncea L.) was conducted with the objectives of (1) analyzing the effect of humic acid ... -
Sintesis Membran Selulosa Asetat dari Nata De Coco dengan Penambahan Diklorometana menggunakan Metode Inversi Fasa
(Universitas Sumatera Utara, 2025)This study aims to synthesize and characterize cellulose acetate membranes derived from nata de coco with the addition of dichloromethane (DCM) using the phase inversion method. Nata de coco was selected due to its high ... -
Karakteristik Elektroda Termodifikasi Kitosan/GQDs/MnO2 dalam Mengukur Kolesterol dengan Metode Voltametri Siklik
(Universitas Sumatera Utara, 2025)Chitosan/graphene quantum dots (GQDs)/manganese dioxide (MnO₂) modified electrode was successfully employed for cholesterol measurement using the cyclic voltammetry method. The incorporation of MnO₂ was proven to enhance ... -
Sensitivitas dan Limit Deteksi Elektroda Termodifikasi Kitosan/GQDs/Fe3O4 dalam Mengukur Konsentrasi Kolesterol Menggunakan Metode Voltametri Siklik
(Universitas Sumatera Utara, 2025)In this research, the chitosan/GQDs/Fe3O4 modified electrode has been successfully carried out in measuring cholesterol using the cyclic voltammetry method. The chitosan/GQDs/Fe3O4 modified electrode was fabricated ... -
Studi Pemodelan Dispersi Sulfur Dioksida dengan Menggunakan Metode Gaussian Distribution pada Peternakan Babi di Mandala
(Universitas Sumatera Utara, 2025)A livestock can caused air pollution. One type of gas produced is sulfur dioxide (SO2). To measure the concentration of sulfur dioxide in the atmosphere can be done using the pararosaniline method. With this method, an ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Flamboyan (Delonix regia (Bojer Ex Hook.) Raf.)
(Universitas Sumatera Utara, 2025)Flamboyan (Delonix regia (Bojer Ex Hook.) Raf.) is a plant that contains phytochemical compounds that have health benefits and are efficacious as medicinal ingredients. Isolation and identification of flavonoid compounds ... -
Karakteristik Briket Arang Tandan Kosong Kelapa Sawit dengan Perekat Berbahan Tepung Sagu, Tepung Maizena, dan Natrium Silikat
(Universitas Sumatera Utara, 2025)The increase in fossil fuel use increases every year along with the growing activities of society, resulting in a decrease in the availability of fossil fuels. Biomass renewable energy sources have the potential to replace ... -
Pengaruh Variasi Massa Kalium Hidroksida dalam Aktivasi Arang terhadap Nilai Kalor Briket Arang Tempurung Kelapa
(Universitas Sumatera Utara, 2025)Research has been conducted on the effect of KOH mass variation in charcoal activation on the calorific value of coconut shell charcoal briquettes. KOH was used as an activator of coconut shell charcoal. The coconut shell ... -
Penggunaan Kitosan Kulit Udang Putih (Litopenaeus Vannamei) untuk menurunkan Kadar Logam Ai Dan Mn Pada Air Sungai Di Kawasan Tembung
(Universitas Sumatera Utara, 2025)Heavy metal pollution such as aluminum (Al) and manganese (Mn) in water can have negative impacts on the environment and human health. Chitosan has active amino (NH2) and hydroxyl (OH) groups, which are able to adsorb ... -
Sintesis Basa Schiff melalui Reaksi Kondensasi Selulosa Dialdehida dari Tandan Kosong Kelapa Sawit dengan Metilamina Sebagai Wet Strength Agent
(Universitas Sumatera Utara, 2025)This study examines the synthesis of Schiff bases through the condensation reaction of cellulose dialdehyde from empty palm bunches with methylamine as a wet strength agent. Cellulose dialdehyde was obtained from the ... -
Sintesis Selulosa Dialdehida Dari Tandan Kosong Kelapa Sawit Sebagai Wet Strength Agent
(Universitas Sumatera Utara, 2025)Cellulose isolation from empty palm fruit bunches (EPFB) was conducted by adding 3.5% HNO3, 2% NaOH, and 1.75% Na2SO3, NaOCl, 10% H2O2. 18.160 g of cellulose was obtained. The cellulose was oxidized using NaIO4 with a ratio ... -
Pembuatan Karbon Aktif dari Tongkol Jagung dengan Aktivator Asam Sulfat (H2SO4) untuk Penyerapan Logam Mangan (Mn) pada Air Sumur Bor
(Universitas Sumatera Utara, 2025)The increase in industrial development often results in waste, chemicals, or leaks from factory infrastructure that have the potential to contaminate groundwater and compromise the quality of water from bore wells. In ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Tumbuhan Ceremai (Phyllanthus acidus (L.) Skeels)
(Universitas Sumatera Utara, 2025)The cherry plant (Phyllanthus acidus (L.) Skeels) is one of the herbs that has the potential as a medicine. One of the bioactive compounds that plays a role in this is flavonoids. Isolation and identification of flavonoid ... -
Studi Pengaruh Konsentrasi Na-CMC pada Karakteristik Fisikokimia dan Elektrokimia Elektroda Hibrida CNT/NiCo2O4 sebagai Material Superkapasitor Fleksibel
(Universitas Sumatera Utara, 2025)The demand for flexible and environmentally friendly energy storage devices continues to grow alongside the development of wearable electronics. Supercapacitors have emerged as one of the most promising candidates due to ... -
Sintesis Fe3O4/ZIF-8 dari Pasir Besi untuk Adsorpsi Logam Pb(II): Studi Pengaruh Variasi pH Larutan terhadap Kapasitas Penyerapan Adsorben
(Universitas Sumatera Utara, 2025)The rapid rate of population growth is accompanied by the intensification of human activities, especially in the industrial sector. Increased industrial activity leads to high production of toxic pollutants that can ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Buah Kaliandra Merah (Calliandra houstoniana var. calothyrsus (Meisn.) Barneby)
(Universitas Sumatera Utara, 2025)Red calliandra plant (Calliandra houstoniana var. calothyrsus (Meisn.) Barneby) was a plant that had many benefits, one of which was used as a herbal medicine. One of the bioactive compounds that played a role in this was ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Jeruk Nipis (Citrus aurantiifolia (Christm.) Swingle)
(Universitas Sumatera Utara, 2025)Isolation and identification of flavonoid compounds from Lime Leaves (Citrus aurantiifolia (Christm.)Swingle) has been carried out through the maceration extraction stage with methanol solvent. The methanol extract dissolved ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Buah Jambu Leci (Psidium cattelainum Sabine)
(Universitas Sumatera Utara, 2025)Flavonoid compounds were isolated and identified from the fruit of the guava (Psidium Cattleianum Sabine). The isolation process involved methanol solvent maceration extraction until a negative FeCl3% was obtained. This ... -
Sintesis 2-Etilheksil Dekanoat dari Esterifikasi 2-Etilheksanol dan Asam Dekanoat pada Perbandingan Waktu Reaksi dan Kekuatan Mikrowave Menggunakan Katalis Enzim Lipase
(Universitas Sumatera Utara, 2025)Synthesis of 2-Etilhexyl Decanoate from decanoic acid and 2-ethylhexanol by esterification reaction with lipase enzyme catalyst using microwave has been conducted. The parameters studied in this study were the effect ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Iriancis (Impatiens hawkeri W.Bull)
(Universitas Sumatera Utara, 2025)Isolation and identification of flavonoid compounds from the leaves of the Iriancis (Impatiens hawkeri W.Bull) have been carried out through the maceration extraction stage with methanol solvent. Concentrated methanol ...