A - Mathematics and Natural Sciences: Recent submissions
Now showing items 161-180 of 506
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2017 AIP Conference Proceedings 1813 Esterification of Oil Adsorbed on Palm Decanter Cake into Methyl Ester using Sulfonated Rice Husk Ash as Heterogeneous Acid Catalyst
(2017-02-15)Palm Decanter cake (PDC) which is categorized as the waste from palm oil mill has been found to contain residual crude palm oil. The oil adsorbed on the PDC (PDC-oil) can be extracted and potentially used as feedstock ... -
2014 Proceeding Venice ULTRASOUND-AIDED IN SITU TRANSESTERIFICATION OF OIL ADSORBED ON DECANTER CAKE USING EFBA AND Na2SiO3 AS CATALYSTS
(2014-11-20)In the present study, renewable green fuel is produced using abundant biowaste from palm oil mill. The crude plam oil from decanter cake was transesterify using empty fruit bunch ash (EFBA) and waste marine sponge with ... -
2021 JKM wahyuni PREPARATION OF WO3-ZnO COMPOSITES BY SOLID STATE REACTION AND THEIR CHARACTERIZATION
(2020-11-01)The preparation of WO3-ZnO composites through the solid state reaction has been conducted. The research stages included mixing WO3 and ZnO solids with the addition of polyvinyl alcohol, drying, sieving and heating. WO3 ... -
2021 JKM audy COMPUTATIONAL STUDY OF ZEOLITE LTA ( LINDE TYPE A) INTERACTION WITH ALKALINE CATION (Li+, Na+, K+) USING MOLECULAR MECHANIC METHOD
(2021-07-05)Study of computation on zeolite LTA (Linde Type A) interaction with alkaline cation (Li+, Na+, K+) using mechanical moleculer method was conducted. Data processing was conducted computationally using Hyperchem 7.0 with ... -
2021 JBAT Preparation of Dye-Sensitized Solar Cell (DSSC) Using TiO2 and Mahkota Dewa Fruit (Phaleria Macrocarpa (Scheff) Boerl.) Extract
(2021-06)A dye sensitized solar cell (DSSC) is a low-cost solar cell with attractive features. DSCC contains of photo electrode, dye, electrolyte, and counter electrode with photo electrochemical system. The aim of this research ... -
2019 JKM YuliYana ISOLATION OF STEROID COMPOUNDS IN THE n-HEKSANA FRACTION FROM JARUM TUJUH BILAH LEAVES EXTRACT (Leuenbergeria bleo (Kunth) D.C.)
(2019-11-01)This study aims to find secondary metabolites isolated from the leaves of the Jarum Tujuh Bilah (Leuenbergeria bleo (Kunth) D.C.). The method used was maceration, fractionation and column chromatography and was identified ... -
2019 JBAT Modification of Spent Bleaching Earth with WO3 and the Application for Photocatalytic Degradation of Waste Dyestuff under Solar Light
(2019-12)Degradation of blue dye waste in Sarong Samarinda production using WO3-bleaching earth (BE) has been conducted. Structural and morphological characterization has conducted using X-ray diffraction (XRD), and Scanning ... -
2019 Alchemy Validasi Metode Penentuan Benzena, Toluena dan Xilena pada Sampel Udara dan Tanah Menggunakan Kromatografi Gas
(2019-03-01)Penelitian tentang validasi metode penentuan kadar benzena, toluena dan xilena pada sampel udara dan tanah dengan menggunakan kromatografi gas telah dilakukan. Untuk mendapatkan hasil pengukuran yang valid, beberapa ... -
2018 JKM wiki IMPREGNATION AND CHARACTERIZATION OF K-DEOILED SPENT BLEACHING EARTH (K-DSBE) WITH WET METHOD
(2018-05-02)In this research, KOH has been impregnated on Deoiled Spent Bleaching Earth (DSBE) with wet method as a catayst. KOH was impregnated on DSBE of 40 % and 60 % (w/w), then characterized using XRay Flourescence (XRF), X-Ray ... -
2017 JBAT PREPARATION_OF_SPENT_BLEACHING_EARTH-SUPPORTED_CAL
(2017-06)An investigation was conducted on palm oil refinery waste-spent bleaching earth (POR-SBE), POR-SBE supported by calcium as catalysts for methyl esters production through transesterification process using waste frying ... -
2016 JKM Noor H RICE HUSK SILICA-COATED MAGNETIC PARTICLES AS A LOW COST SUPPORT MATERIAL FOR CRUDE Pseudomonas aeruginosa LIPASE IMMOBILIZATION
(2016-11-14)In this research, lipase produced from the bacteria Pseudomonas aeruginosa was immobilized on rice husk silica-coated Fe3O4 nanoparticles. The process included the following steps: preparation of magnetic ferosoferic ... -
2020 J Atomik Karrina STUDY ON PHOTODEGRADATION ACTIVITY OF RHODAMINE B BY WO3/TIO2/SIO2 COMPOSITES IN VARIOUS MATERIAL WEIGHT CONDITION
(2020-03-25)A study on photodegradation activity of Rhodamine B by WO3/TiO2/SiO2 composites in various material weight condition has been conducted. The photocatalytic process was carried out in a closed reactor equipped with visible ... -
2020 J Atomik Damianus CORRELATION OF Pb METAL ION LEVELS ON PROTEIN CONCENTRATION IN CRUSH CONSTRUCTION (Gafrarium tumidium) TAKEN IN THE COAST OF BONTANG, EAST KALIMANTAN
(2019-11-07)Research on the correlation of Pb metal ion levels to protein content in crush clams (Gafrarium tumidium) taken at the coast of the East Kalimantan Rhino Estuary has been conducted. This study aims to determine the levels ... -
2019 J atonmik Ersa ADSORPTION OF Fe METAL ION IN SOLUTION USING NATURAL ZEOLITE ACTIVATED BY KOH
(2019-08-01)Adsorption of Fe metal ion in solution using natural zeolite activated by KOH has been conducted. Natural zeolite was characterized using X-Ray Flourescence (XRF), X-Ray Diffraction (XRD) and surface area test. The XRF ... -
2019 J Atomik reka MODIFIKASI DAN KARAKTERISASI ZEOLIT ALAM TASIKMALAYA DENGAN Fe2O3 MODIFICATION AND CHARACTERIZATION OF TASIKMALAYA NATURAL ZEOLITES WITH Fe2O3
(2019-03-09)Research on natural zeolite has been carried out as a porous material modified by Fe2O3 semiconductor material. Starting with natural zeolite preparation, dealumination by activating it using HCl solution, modifying natural ... -
2018 J Atomik Sumarni AKTIVASI DAN KARAKTERISASI ZEOLIT ALAM MENGGUNAKAN NaOH ACTIVATON AND CHARACTERIZATION OF NATURAL ZEOLITE USING NaOH
(2018-08-25)A study on the activation of natural zeolite using NaOH and it’s application for adsorption Rhodamin B from waste liquid woven Samarinda has been conducted. The activation process was conducted by several steps namely, sample ... -
2018 J atomik mela ANTIHYPERGLYCEMIC ACTIVITY OF JAMBU MAWAR LEAVES EXTRACT (Syzygium jambos (L.) Aston) ON MALE RABBIT ALLOXANT INDUCTED
(2019-03-15)Antihyperglycemic activity of jambu mawar leaves extract (Syzygium jambos (L.) Aston) to lower blood glucose levels in male rabbits (Oryctolagus cuniculus) induced by alloxant has been conducted. Simplicia jambu mawar ... -
2018 J ATOMIK Irma SINTESIS SILIKA DARI ABU SEKAM PADI TERMODIFIKASI 2-MERKAPTOBENZOTIAZOL UNTUK ADSORPSI ION LOGAM Cd2+ DAN Cr6+
(2017-11-29)A study on the adsorption of Cd2+ ion using silica gel modified with 2-mercaptobenzothiazole (MBT) from rice husk ash has been conducted. The modification of silica gel with MBT was conducted by several steps namely, sample ... -
2018 J Atomik Hariati SINTESIS KARBON AKTIF CANGKANG JENGKOL (Pithecellobium lobatum) DENGAN BANTUAN ULTRASONIK SEBAGAI BAHAN PENYIMPAN ENERGI ELEKTROKIMIA
(2017-11-29)Research on the synthesis of activated carbon from jengkol shells (Pithecellobium lobatum) with the help of ultrasonic waves as an electrochemical energy storage material has been done. The activated carbon from jengkol shells ...