Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 661-680 of 11355
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Impregnasi Fe/Cu pada Material Mesopori Silika Template Metil Ester Risinoleat sebagai Adsorben-Reduktor Kromium (VI)
(Universitas Sumatera Utara, 2024)Chromium is one of the heavy metals that is widely used in industrial activities. Chromium metal (especially hexavalent chromium) has high toxicity. Nowadays, adsorption-reduction technique is the most efficient treatment ... -
Modifikasi Pati Sukun (Artocarpus Altilis) melalui Reaksi Esterifikasi dengan Asam Laurat dalam Media Larutan Urea/NaOH
(Universitas Sumatera Utara, 2024)Modification of lauric starch was done through esterification reaction between breadfruit starch (Artocarpus altilis) with lauric acid in urea/NaOH solution media. This research was conducted in two stages, namely, ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Berat Katalis Abu Kulit Telur Ayam dan Waktu Reaksi menggunakan Radiasi Microwave
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate was conducted from the esterification reaction of oleic acid with methanol using a chicken eggshell ash catalyst under microwave irradiation. Chicken eggshell powder was analyzed ... -
Preparasi Poliuretan Alam dari Campuran Getah Nangka (Artocarpus Heterophyllus) dan PEG 400 menggunakan Monomer Isosianat (TDI)
(Universitas Sumatera Utara, 2024)Preparation of natural polyurethane from jackfruit sap is done by reacting the jackfruit sap with 98% formic acid and 30% H2O2, then polyurethane production is carried out by reacting the jackfruit sap polyol with PEG ... -
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 ... -
Pembuatan dan Karakterisasi Campuran Fe3O4/SiO2 dengan Metode Kopresipitasi sebagai Adsorben Methylene Blue
(Universitas Sumatera Utara, 2024)Research has been conducted on the manufacture and characterization of Fe3O4/SiO2 mixture using the coprecipitation method. This research is applied as an adsorbent on methylene blue. The mixing process begins with the ... -
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 ... -
Aplikasi Superkapasitor Rangkaian Konversi Tegangan ke Arus pada Pemakaian Energi Matahari tanpa Baterai
(Universitas Sumatera Utara, 2024)Research has been conducted on the conversion of voltage to current in the use of solar energy without batteries using 40WP solar panels. Solar panels have challenges, namely in overcoming fluctuations in the power ... -
Efek Penambahan ZnO pada Komposit Fe3O4 dan SiO2 yang Berasal dari Abu Sekam Padi sebagai Aplikasi Fotokatalis Methylene Blue
(Universitas Sumatera Utara, 2024)Rice is highly sought after in Indonesia and plays an important role in the country's economy. However, increased rice production also generates more waste, including rice husks. Rice husks can be converted into silica ... -
Adsorben Berbasis Zeolit Alam Pahae-Karbon Aktif Kulit Pisang Kepok sebagai Pereduksi Salinitas Air Laut
(Universitas Sumatera Utara, 2024)Research on zeolite-activated charcoal based adsorbent of kepok banana peel as seawater reducer has been conducted. Zeolite as matrix and kepok banana peel activated charcoal as filler with powder size of 149 μm (100 mesh). ... -
Sintesis Wood Plastic Composite Berbasis Low Density Polyethylene dan Karbon Aktif Kayu Bakau
(Universitas Sumatera Utara, 2024)Research has been conducted on the synthesis of wood plastic composite based on low density polyethylene and mangrove wood activated carbon. This study aims to determine the effect of the addition of mangrove wood activated ... -
Karakterisasi Karbon Aktif dari Ampas Tebu Menggunakan Aktivator HCl dan H2SO4 sebagai Adsorben Logam Berat Timbal (Pb)
(Universitas Sumatera Utara, 2024)A research study has been conducted on the preparation and characterization of activated carbon from sugarcane bagasse as an adsorbent for lead (Pb) ions in well water. The preparation of activated carbon involved ... -
Pembuatan Nanoserat Selulosa Tandan Kosong Kelapa Sawit (TKKS) dengan MnO2 dan Go (Grafena Oksida) sebagai Elektroda Superkapasitor
(Universitas Sumatera Utara, 2024)Preparation of palm empty fruit bunch cellulose nanofibre with MnO2 and GO (Graphene Oxide) as supercapacitor electrodes has been carried out. The cellulose obtained was subjected to FT-IR test to determine the OH group. ... -
Pemanfaatan Limbah Cangkang Kijing (Pilsbryoconcha Exilis) sebagai Sumber Hidroksiapatit dengan Metode Presipitasi Double Stirring sebagai Bahan Biomaterial
(Universitas Sumatera Utara, 2024)Research has been conducted on the synthesis and characterization of hydroxyapatite of kijing shells. Kijing shells (Pilsbryoconcha exilis) are a potential natural resource in the Belawan mangrove forest area, North ...