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Fadarina HC
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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SINTESIS DAN KARAKTERISASI SELULOSA ASETAT DARI TANDAN KOSONG KELAPA SAWIT SEBAGAI BAHAN BAKU BIOPLASTIK muhammad faizal; Jaksen M Amin; Fadarina HC
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Synthesis and characterization of cellulose acetate from cellulose of empty fruit bunches (EFB) have been carried out using the Celanese method, namely glacial acetic acid as swelling agent and acetic anhydride as acetylating agent. The research was carried out through the preparation of raw materials, cellulose extraction and synthesis of cellulose acetate from -cellulose of empty fruit bunches. This study aims to determine the effect of variations in solvent concentration on yield, acetyl content, degree of substitution and moisture content of cellulose acetate and to obtain the characteristics of cellulose that are suitable for application as raw material for making bioplastics. The concentration variations of the solvent used were (10, 15, 20, 25 and 30) % wt/v, with -cellulose ratio: glacial acetate (1:10), -cellulose ratio : acetic anhydride (1:5), acetylation time 1.5 hours, acetylation temperature 40°C and stirring speed 200 Rpm. The results showed that the cellulose acetate obtained from the synthesis has characteristics such as cellulose monoacetate and cellulose diacetate with solid form in the form of a powder, white in color and odorless. The best characteristic of cellulose acetate has a yield product of 75%, acetyl content of 36.927%, degree of substitution (DS) 2.22, and water content of 5.75%.
STUDI KASUS PENGARUH WAKTU DAN LAJU ALIR PADA PROSES REGENERASI MOLSIEVE MELALUI PEMANASAN PADA KILANG EKSTRAKSI NGL DI PT.PERTA-SAMTAN GAS Haidi Tazaruddin; Fadarina HC; Abu Hasan
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Molsieve adsorption plant which adsorp moisture content in feed gas until H2O below 0.1 ppmv at outlet vessel. After adsorption process, molsieve will saturated and need to regenerate for return molsieve capacity. Regeneration process are very important for adsorption capacity. Problem at extraction plant prabumulih is molsieve capacity will decrease after 3 month. Based of things that affect molsieve capacity, need to evaluate optimal regeneration as a maximum equipment limit. Meassurement parameter in this research is quantitiy of H2O not boiled or remain in molsieve, with heating time variable 3.5 hour , 4.0 hour, 4.5 hour, and 5.0 hour. Combined with flow rate variable 14.0 MMscfd, 14.5 MMscfd, 15.0 MMscfd, 15.5 MMscfd. Result in combination flow rate 15.5 MMscfd with heating time 5.0 hour have a mass H2O to boil up is 1.39387 ton and mass H2O remain in molsiev is 0.08019 ton. The writter found in flow rate 15.0 with heating time 5.0 hour is optimal combination based on equipment limitation. Writter suggest for replace equipment for raise up flow rate to maximal regeneration.
UPAYA PENINGKATAN NILAI KALOR BATUBARA SUB BITUMINUS MELALUI PENURUNAN KADAR LENGAS (MOISTURE) MENGGUNAKAN OVEN CONVEYOR SEBELUM DITERIMA OLEH KONSUMEN Thoufiq Ridhowan Thoufiq; Fadarina HC; Muhammad Taufik
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Coal with a high moisture content and low calorific value is usually classified as low rank coal. Improving the quality of coal can be done by reducing the water content which will increase the calorific value. The technology used to improve the quality of coal, one of which is using a conveyor oven before the coal is received by consumers or used by the industry. The amount of water that evaporates can be influenced by the length of the conveyor, the speed of the conveyor and the temperature used. The experiment was carried out on a laboratory scale using samples of coal that were dried in a rack-type oven that had been modified to resemble a conveyor oven. Furthermore, the coal samples were analyzed for Total Moisture and Calorific Value. Optimal drying on a laboratory scale to obtain a total water reduction of 2.2% (Ar) and an increase in heating value of 179 Cal/g (Ar) is at a drying temperature of 270 ℃ for 90 seconds. Key words : Coal Drying, Conveyor Oven, Total Moisture, Calorific Value
SINTESIS KATALIS KARBON AKTIF CANGKANG BIJI KARET DIIMPREGNASI CaO DAN KOH UNTUK PEMBUATAN BIODIESEL DARI MINYAK JELANTAH Raka Ade Dwi Cahaya; Fadarina HC; Mustain Zamhari
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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The use of catalysts is very influential in the production of biodiesel because it can accelerate the production of biodiesel. The catalysts that are often used to make biodiesel are homogeneous base catalysts such as NaOH and KOH. The use of alkaline catalysts is faster than acid catalysts, so alkaline catalysts are more often used. Homogeneous catalysts have the disadvantage that they are difficult to separate. Disadvantages are overcome by using heterogeneous catalysts. The problem encountered when using heterogeneous catalysts is the diffusion process, so the heterogeneous catalyst must have a large surface area. The material with a large surface area that has the potential to be part of the catalyst is activated carbon from rubber seed shell. Activated carbon cannot directly used as a catalyst in the production of biodiesel because it does not have an active site, so activated carbon needs to be prepared by impregnation of the active site onto the surface of activated carbon such as CaO and KOH. This research varying the mixture ratio when impregnation between activated carbon CaO and KOH and then tested on the production of biodiesel for check the activity and selectivity of catalyst. The best CaO:AC ratio in the synthesis of CaO/KOH/AC catalysts is (2.5 : 7.5) with the best KOH concentration of 25% which produces a yield of 96.4%. The biodiesel produced using a CaO/KOH/AC catalyst has met several parameters of SNI 7182:2015, where the catalyst with the best yield produces a density of 0.866 gr/ml, a viscosity of 4.00 cSt, a flash point of 162.6 and a cetane number of 75.5.
Co-Authors Abu Hasan Haidi Tazaruddin Jaksen M Amin Muhammad Faizal Mustain Zamhari Raka Ade Dwi Cahaya Thoufiq Ridhowan Thoufiq