This study aims to determine the best operating conditions based on the effect of Ni/C catalyst weight percentage and temperature on hydrocracking of lignite coal pyrolysis products. The hydrocracking process was carried out using variations in catalyst weight percentage of 5, 10, 15, dan 20% also using temperature variations of 400, 450, 500, 550, and 600°C. Catalyst characterization was cond…
In this research, lignite coal is used as raw material for making coal oil. The method used is the pyrolysis method using temperature variations of 450-600°C. The coal oil resulting from pyrolysis was analyzed using GC-MS, %yield, specific gravity, and heating value. The optimal temperature obtained in the lignite coal pyrolysis process is 500°C. The results of GC-MS analysis showed that the …
The research on the distribution of heavy metal iron (Fe) in Gasing River water has been conducted. This research aims to determine the distribution of heavy metal iron (Fe) pollution in Gasing River and the quality status of Gasing River water. This research began with sampling at seven points, including the upstream of Gasing River, Kenten Village Bridge, Gasing Tengah Bridge, Middle of Gasin…
This study aims to determine the effect of temperature on the quality of activated carbon from lignite coal through the pyrolysis process. Activated carbon is made at a temperature increase rate of 0.5 dergress celcius per second . This test was carried out using temperature variations of 450, 500, 550, and 600 dergress celcius. Activated carbon was tested for quality by measuring water content…
Research on the synthesis of MnFe2O4/Activated Carbon@ZnO for adsorption and degradation of Congo red dye. Coal-based activated carbon is chemically activated. Synthesis MnFe2O4/Active Carbon and MnFe2O4/Active Carbon@ZnO were synthesized using the coprecipitation method. The composite is a powder that is faded brown in color and is magnetic. The results of the synthesis of MnFe2O4/Activated Ca…
This research aims to synthesize NiFe2O4/activated carbon@ZnO composite used in the adsorption and degradation process of Congo red dye. The synthesized product was characterized using XRD, VSM and UV-Vis DRS instruments against Congo red dye in various pH, dye concentration, and contact time. The synthesis of the NiFe2O4/activated carbon@ZnO composite was carried out using precipitation method…
This research aims to synthesize Fe3O4/activated carbon@NiO composite used in the adsorption and degradation process of Congo red dye. Nanomagnetic Fe3O4 utilized to reduce the band gap value of NiO as well to impart magnetic properties. Activated carbon from bamboo is utilized as an adsorbent in the adsorption process and NiO as a photocatalyst in the degradation process. The Fe3O4/activated c…
This research uses palm oil shells as raw material for making active carbon. Activated carbon was activated using 10% H3PO4 and modified using Co(OH)2. The obtained pHPZC value is at pH 7, so the adsorption in this study was conducted at pH 8. In this research, adsorption was determined from adsorption kinetics and adsorption isotherms. Based on the results of XRD, FTIR electron microscope and …
The rapid development of the textile industry has resulted in an increase in liquid dye waste produced. Congo red dye is widely used in textile production. Congo red has toxic properties so it will cause various diseases if it enters the human body in large quantities. Therefore, it is necessary to process dye liquid waste. In this research, the synthesis of Fe3O4/Activated Carbon@ZnO composite…
Performance testing of the membrane electrode assembly (MEA) using Pt-Black and Pt/C catalysts for direct methanol fuel cell (DMFC) on electrolyte membranes with varying methanol concentrations has been carried out. MEA is designed by combining Pt-Black electrodes on the anode side and Pt/C on the cathode side using Nafion 117 (N117) and Nafion 212 (N212) membranes. MEA was characterized using …
This research generates the synthesis of (bentonite-TiO2)-GO composites for the distribution of methylene blue dye. A dye that is often used for textile coloring purposes with various chemical properties, one of which is methylene blue. The dyes that are thrown away will end up as waste. This has the potential to harm human health and threaten aquatic ecosystems. The adsorption method is one th…
Heavy metal copper (Cu) in the sediment of Gasing River, Banyuasin, South Sumatra has been studied. The research aims to determine the distribution of copper (Cu) metal and determine the level of copper (Cu) metal pollution in sediments based on the geoaccumulation index. The research began with sediment sampling at six locations in the upstream to downstream of the Gasing River. Sediment sampl…
This research focuses on testing the performance of sodium-ion batteries using variations in NaNO₃ electrolyte concentrations (1M and 4M) and solvent types (H₂O and DMSO), with the aim of determining the most effective combination. The objective of this study is to analyze the electrochemical characterization of TiO₂/NaNiPO₄ electrodes and to assess the influence of solvent and electrol…
This research uses SnO₂ powder as the anode and NaFePO₄ powder was synthesized using the sol-gel method as the cathode, combined with binchotan carbon, PANi, and DMSO solvent, stirred until forming a paste, which was then coated and dried to form a thin sheet. NaNO₃ salt was used as the electrolyte with varying concentrations, while DMSO and H₂O. The results of characterization using SE…
Zinc ion analysis in Sekanak River has been conducted using concentration cell potentiometric method. This method is proven valid because it has a correlation coefficient of 0.9980 linear area in the concentration range of 1x10-5 to 3x10-2 mol/L. The resulting precision was 0.9% with an average recovery value of 93.44%. In addition, the limit of detection (LoD) of the method was 1.03x10-6 mol/L…
Validation of the potentiometric cell concentration method and analysis of lead metal in Sekanak river sediments has been carried out. The aims research to validate the concentration cell potentiometric method in determining lead metal (Pb) in sediments and determine the distribution of lead metal (Pb) in Sekanak river sediments. The concentration cell potentiometric method was proven to be val…
The application of K2CO3-based catalysts from oil palm empty fruit bunches (EFB) aims to utilize and process biomass waste. TKKS contains K2CO3 which is needed as a raw material for catalyst production. K2CO3 in TKKS is obtained by solid-liquid extraction (leaching) method. The potassium content in the TKKS ash and solids resulting from the extraction was evaluated using XRF (X-Ray Fluorescence…
This study aimed to determine the physicochemical properties of cuko from several pempek restaurants in Palembang City during storage. This study used a Completely Randomized Design (CRD) Factorial with two treatment factors, repeated three times and used quantitative descriptive method. Factor A was the type of cuko from several pempek restaurants in Palembang City (cuko restaurant A, cuko res…
Tujuan penelitian ini adalah untuk mengkaji sifat fisik, kimia dan granula sukun instan (Artocarpus communis) dengan penambahan pati tapioka dan Penelitian dilaksanakan di Laboratorium Kimia Hasil Pertanian dan Laboratorium Mikrobiologi Hasil Pertanian, Fakultas Pertanian, Universitas Sriwijaya, dari bulan Juli 2008 hingga April 2009. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial…
A research has been done about study of preparation and characterization of Alkaline Fuel CelI (AFC) electrode resulted from electrodeposition of platinum (Pt) on backing layer carbon (C). The First step of this research was to make of backing layer that continued with analyzing of hydrophobicity and conductivity value. Electrodeposition was carried out on backing layer with variation of platin…
Penelitian ini bertujuan untuk mengetahui karaktersitik kimia dan organoleptik biskuit bangle(Zingiberaceae cassumunar). Penelitian ini dilakukan dari bulan Juni hingga Desember 2008 di Laboratorium Kimia Hasil Pertanian. Penelitian ini menggunakan rancangan acak kelompok yang disusun secara faktorial dengan dua faktor perlakuan yaitu jenis serbuk rimpang bangle (tepung rimpang bangle dan pati …
Telah dilakukan penelitian tentang kajian eksperimental kerugian tinggi tekan aliran pada larutan garam dan larutan gula dengan variasi konsentrasi 5%, 10% dan 15%. Penelitian ini bertujuan untuk mengetahui pengaruh perubahan konsentrasi dan variasi larutan terhadap kerugian tinggi tekan aliran larutan gula dan garam melalui pipa dan membandingkan hasil dari pengujian dengan hasil perhitungan d…
Acid soils in South Sumatra have low availability of phosphorus. Currentstudy was a green house experiment investigating effect of soil ameliorants onpopulation of P-solubilizing bacteria (PSB), P availability and sweet com growth inUltisols. This experiment tested 8 treatments, i. e. untreated soil (control), PSBinoculation, Organic Matter application, Lime application, PSB + Organic Matter,PS…