KINETIKA <p style="text-align: justify;"><strong><img src="http://public/site/images/agusmanggala/homepageImage_en_US.jpg" alt="" /><img src="http://public/site/images/agusmanggala/homepageImage_en_US1.jpg" alt="" />Jurnal KINETIKA</strong> adalah Jurnal yang diterbitkan oleh Jurusan Teknik Kimia Politeknik Negeri Sriwijaya yang terbit 3 kali dalam setahun, yaitu :</p><ul><li>Edisi Maret</li><li>Edisi Juli</li><li>Edisi November</li></ul><p>Artikel ilmiah yang dipublikasikan merupakan hasil-hasil riset/penelitian dalam bidang Teknik Kimia, Bioteknologi, Energi dan Lingkungan, Agroindustri dan pangan, serta Petrokimia.</p><p>Untuk pembaca yang ingin mengirim artikel jurnal, bisa menghubungi <a title="Administrator Jurnal" href="/index.php/kimia/about" target="_blank">administrator jurnal KINETIKA</a>.</p><p style="text-align: justify;"><strong>Silakan download template jurnal dalam bentuk <a title="Template" href="/index.php/kimia/manager/files/templatejurnalkinetika.doc?download=1" target="_self">Office Word</a></strong></p> Politeknik Negeri Sriwijaya en-US KINETIKA 1693-9050 RANCANG BANGUN ABSORBER AMMONIA (DITINJAU DARI LAJU ALIR, TINGGI PACKING DAN VARIASI PACKING TERHADAP KONSENTRASI AMMONIA) <p><em>The formulation of the problem in this study is how to design an absorber device (in terms of flow rate, packing height, and packing variation to ammonia concentration). This study aims to obtain 1 unit of ammonia absorber, reduce ammonia gas levels with an ammonia absorber and get the effect of H2O flow rate, packing height and packing variations on NH3 concentrations. The data analysis used was univariate analysis and bivariate analysis. The data collection technique used was purposive sampling. The research resulted in 1 unit of ammonia absorber with a tower diameter of 3.5 cm and a tower height of 60 cm. The results showed that the effect of H2O flow rate on ammonia concentration was very influential, it was found that the NH3 concentration value on packing height, namely: at the lowest height of 5 cm the amount of NH3 concentration was 5.9690 N and at a height of 60 cm the amount of NH3 concentration was 4.7518 N. The higher the packing height, the lower the NH3 concentration value, the NH3 concentration value obtained on the packing variation, namely: marbles packing of 4.198 N, stainless steel packing of 2.026 N and packi</em></p> Afrian Dwi Nugroho Delanisa Sabrina Ines Agustin Pratiwi Muhammad Yerizam Anerasari M Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 1 5 PENGARUH JUMLAH KATALIS ALUMINA SILIKA PADA PROSES PEMBUATAN BAHAN BAKAR CAIR LIMBAH PLASTIK HDPE DAN LDPE <p><em>As the world's population increases, consumption of plastic goods is increasing. Plastic waste, both from industry and households has increased sharply. The increase in the amount of plastic is due to the fact that plastic has many advantages compared to other materials. The increase in the amount of plastic waste will have a negative impact on the environment so that there is a need for handling to reduce the amount of plastic waste. Therefore, there is a need for handling to reduce the amount of plastic waste. One alternative to reducing the amount of plastic waste which is more profitable is converting plastic waste into liquid fuel. This can be done because basically plastic comes from petroleum, so it just needs to be returned to its original shape. In addition, plastic also has a high calorific value, equivalent to fossil fuels such as gasoline and diesel. This study conducted the processing of HDPE and LDPE plastic waste into liquid fuel using an Alumina Silica catalyst and the effect of the amount of catalyst based on raw materials at 480oC and 400oC was carried out. From the research results, it is known that the optimum catalyst obtained from research on HDPE raw materials is 15% catalyst with oil volume of 794.1 ml, density 787.19 kg/m3, flash point 29°C, viscosity 2.8101 mm2/s and % yield 29.20%. Meanwhile, from research on LDPE raw materials, namely 5% catalyst with oil volume of 240.64 ml, density 767.8 kg / m3, flash point 29°C, viscosity of 2.9651 mm2/s and % yield 12,03%</em></p> Meji Arjuansyah Marwan Aditya Saputra Zurohaina KA Ridwan Ahmad Zikri Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 6 12 ANALISIS SYNGAS GASIFIKASI BATUBARA TIPE DOWNDRAFT DITINJAU DARI VARIASI UKURAN BATUBARA DAN TINGGI ISIAN PACKING ABSORBER <p><em>Coal gasification is the process of converting low rank coal into syngas which can be used as fuel. One of the factors that affect the quality of syngas is the size of coal particles. Meanwhile, to produce clean syngas, the gas from the combustion reactor is flowed through a packed bed absorber filled with marbles to reduce the incompatible particulate gases that are still contained in the syngas. The variations in the size of the coal used in this study are 3-4 cm, 5-6 cm, and 7-8 cm. While the variation of the height of the packing absorber filling used was 9.75 cm, 19.5 cm, 29.25 cm and 39 cm. The composition of the best combustible gas from the variation of coal size and the variation in the filling height of the absorber packing is found in the coal size 3-4 cm, and the packing filling height is 39 cm. With combustible gases (CO, H2 and CH4) produced by 10.9%, 10.5% and 0.9%, the volume of O2 and CO2 is 0.1% and 10.1%, the syngas volume of the absorber output is 2473.47 m3 and the LHV syngas is 6.932 MJ/kg.</em></p> Muhammad Fadjrin Ismaily Fegi Kurniawaty Aida Syarif Irawan Rusnadi Ida Febriana Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 13 18 PENGARUH RASIO UDARA BAHAN BAKAR LPG TERHADAP FLAME TEMPERATURE DAN EFISIENSI TERMAL CROSS SECTION WATER TUBE BOILER <p><em>Boiler is one of energy conversion machines. The boiler function is converting water into steam by utilizing the heat from the chemical reaction between fuel and oxygen in the air which is commonly known as the combustion reaction. The research purposes are to determine the effect of the LPG fuel air ratio on the flame temperature and thermal efficiency of cross section water tube boiler, and to determine the optimum fuel air ratio which produces the highest flame temperature and thermal efficiency. The air fuel ratio that use in this research are 29.16; 29.44; 29.71; 29.99; and 30,26. Based on the research, it is known that the fuel air ratio affects both of flame temperature and thermal efficiency of the cross section water tube boiler. On the range of air fuel ration 29.16 to 30.26, it is known that the greater the fuel air ratio, the higher the flame temperature and thermal efficiency The optimum air fuel ratio in this research is 29.99 which produces 680oC flame temperature and 58.85% on steady state saturated steam production, 7010C flame temperature and 59.71% thermal efficiency on non steady state saturated steam production, and 7040C flame temperature and 59.32% on superheated steam production.</em></p> Marsa Apriani Amalia Susanti Cresa Moneta Has Tahdid Agus Manggala Erlinawati Zurohaina Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 19 25 TINJAUAN SISTEM PENGERING SILIKA GEL BERBASIS ABU SEKAM PADI MENGGUNAKAN SISTEM VAKUM TRAY DRYER TERHADAP KEMAMPUAN DAYA SERAP <p><em>Rice husks are waste from the agricultural industry. Usually this rice husk waste is burned and thrown away without any further processing so that it can pollute the environment. To reduce waste from rice husk ash, in this study rice husk ash will be used as an adsorbent in increasing the adsorbent capacity of silica gel. Rice Husk Ash contains 97.3% Silica. The high silica content of Rice Husk Ash has the potential to be used as a material for making silica-based materials such as silica gel. The large amount of silica (SiO2) contained in rice husk ash makes rice husk ash potential as a raw material for making silica gel. Rice husk ash as adsorbent can also absorb dye from woven fabric waste which is directly disposed of into receiving waters. In this research phase, starting from the extraction process of rice husk ash with 2M KOH at a temperature of 110 oC for 2 hours. Furthermore, it will be lightened in a desiccator and filtered to get a filtrate in the form of Na2SiO3. The filtrate will be mixed with H2SO4 solution until the pH is at a value of 7 and dry it in an oven with a variation of 4, 5 and 6 hours at a temperature of 120 oC. To see the silica gel content using Gravimetry, while to analyze the absorption of dyes in woven fabric waste using UV-Vis Spectrophotometry.</em></p> Muhamad Muammar Arisqi Robert Junaidi Fadarina Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 26 30 RANCANG BANGUN ALAT TIPE SPRAY DRYER UNTUK PROSES PENGERINGAN SUSU BUBUK BERBASIS JAGUNG MANIS (Zea mays saccharata) <p><em>Drying is one of techniques used in food preservation. Spray Dryer is a type of dryer that can change the feed from a fluid state into granules and then convert again into particles which are dried continuously in hot drying media. Spray dryer uses liquid atomization to form droplets, then the droplets formed are dried using dry air with high temperature and pressure. This 31emperat aims to produce high quality corn porridge milk. The drying process is carried out by a batch process where the material is put into a spray dryer and the process is allowed for a certain period of time. The heat transfer process that occurs in this tool is the main variable to determine the efficiency and performance of the tool produced. The drying process of milk powder was carried out at a temperature of 150° C and 160°C in 75 minutes. Based on the analysis, the calculation of heat transfer rate, drying rate, and thermal efficiency obtained a powdered milk product of 0.8 grams with a convection heat transfer rate of 1.6924 kJ, a conduction heat transfer rate of 1.299 kJ, a drying rate of 31.594 kg / hour. And thermal efficiency of 35%.</em></p> Astri Oktaviana Putri Inez Artemisia Mentari Robby Try Julyantiya Selastia Yuliati Erwana Dewi Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 31 37 KINETIKA REAKSI TRANSESTERIFIKASI MINYAK KELAPA SAWIT MENJADI METIL ESTER DENGAN KATALIS CaO/ ABU TERBANG BATUBARA <p><em>Catalyst CaO from snakehead fishbone with supported by fly ash has advantages for the transesterification reaction process, which include active heterogeneous base properties, low solubility, good mechanical strength, and reusability. This study aims to determine the best catalyst that has the optimum impregnation time and mass of CaO in terms of the transesterification reaction of palm oil into methyl esters. The study includes: prediction of the mechanism according to the experimental data, through the effect of impregnation time and the added mass of CaO on changes in the reaction rate that occur, and the formulation of the final equation for the optimum reaction rate of the catalyst. Prediction of the mechanism that occurs follows the Eley-Rideal mechanism, where the reactant adsorbed on the surface of the catalyst is methanol and reacts with triglycerides (palm oil) to produce methyl esters and glycerol. The results of the study indicate that the greater the impregnation temperature and the added mass of CaO, the greater the rate value. The results showed that the optimum catalyst had an impregnation temperature of 80ºC and a mass of CaO 100 grams, with a reaction time of 120 minutes to produce a yield of 98.55%, and a reaction rate of 4.44×10-6 mol/gramcat.</em></p> Toni Okta Fiyansah Fadarina Martha Aznury Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 38 43 DEGRADASI ZAT WARNA RHODAMIN B MENGGUNAKAN SINTESIS FOTOKATALIS ZnO/NiFe2O4 DAN DIAPLIKASIKAN PADA LIMBAH CAIR INDUSTRI PULP DAN KERTAS <p><em>ZnO/NiFe2O4 nanoparticles were synthesized by chemical co-precipitation method and were calcied at 500 0C for 5 h. The Composites synthesis within ratios of zinc oxide to nickel ferrite of 1:0,1, 2:0,1 and 3:0,1. The adsorption and photocatalytic activity of The removal of ZnO/NiFe2O4 were systematically investigated using Rhodamine B and waste water pulp and paper indsutry solution as a model contaminant. Rhodamine B (10 mg/L) and waste water pulp and paper indsutry solution by ZnO/NiFe2O4 (2:0.1) after 2 h reached 98,71% under LED lamp and 91,85% under solar light irradiation for Rh, and after 3 h reached 28,03% under LED lamp for lignin . •OH and h+ play important roles in the decolorization of RhB solution by NiFe2O4/ZnO under simulated LED lamp and solar light irradiation. The adsorption kinetics pattern under conditions of LED lamp and sunlight follows first order kinetic adsorptions.</em></p> Tri Mawarni Fadarina H.C Martha Aznury Muhammad Taufik Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 44 50 Review Artikel GEL PENGONTROL PEMBAKARAN BATUBARA SPONTAN SEBAGAI PENCEGAHAN KEBAKARAN <p><em>Spontaneous combustion is a self-combustion process which is caused by self-heating due to an increase in temperature by an exothermic internal reaction. Heating itself rapidly will accelerate the rise in high temperatures, until finally self-ignition occurs. As we know that spontaneous combustion of coal is a bit dangerous if we couldn’t control it. A new type of mining fire-extinguishing material designed to prevent the spontaneous combustion of coal is presented. Through the graft copolymerization of corn straw, 2-acrylamide-2-methylpropanesulfonic acid (AMPS), and acrylic acid (AA), a corn straw-co-AMPS-co-AA hydrogel was synthesized. A chemical foaming agent was then added to the hydrogel, resulting in a self-foaming gel, which was subsequently mixed with expandable graphite to create an intelligent gel. The intelligent gel exhibited uniform self-foaming when a foaming agent was used. When the water component of the gel had completely evaporated, the gel expanded a second time, with the best results obtained when 10% of expandable graphite was added. The fire-extinguishing performance of the intelligent gel was found to be superior to those of the other gels, as it prevented re-ignition. Thus, this gel is an ideal fire prevention and control material, especially for controlling the spontaneous combustion of coal.</em></p> Venny Krysthin Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 51 55 Review Artikel KATALIS KALSIUM OKSIDA (CaO) BERBASIS BIO UNTUK PRODUKSI BIODIESEL <p><em>The cost of biodiesel production itself is influenced by the basic ingredients for processing and also from the system used. The use of calcium oxide catalyst is intended because it has a good chance of the efficiency and effectiveness of the material that can be easily obtained in each region. Calcium oxide catalyst from waste also has an equal or even approaching chance of commercial calcium oxide. This review will show methods and discussion of the handling of the transesterification process in biodiesel with a mixture of methanol and catalyst that has been tested and the results of the different processes of each biodiesel. The performance of the process can be determined from the process to the reaction performance of the catalyst such as setting the number of catalysts used, the speed of stirring the mixture, the ratio of methanol to oil and the temperature and time of reaction. In order to obtain more economic value, the process of reusing the catalyst which has been reacted in the initial transesterification process can be carried out. The reuse of the catalyst for the next process can be carried out stably for 3 times of repeated use with the yields that are not far from the initial process.</em></p> Dimas Gunawan Prasetyo Copyright (c) 2021 KINETIKA 2021-11-03 2021-11-03 12 3 56 60