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Kinetika
Published by Politeknik Negeri Sriwijaya
ISSN : 16939050     EISSN : 26231417     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology
Artikel ilmiah yang dipublikasikan merupakan hasil-hasil riset/penelitian dalam bidang Teknik Kimia, Bioteknologi, Energi dan Lingkungan, Agroindustri dan pangan, serta Petrokimia.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 214 Documents
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ANALISIS PENGGUNAAN LIMBAH B3 SPENT BLEACHING EARTH SEBAGAI BAHAN BAKAR ALTERNATIF DI PT. SEMEN BATURAJA (PERSERO) TBK: Limbah B3, Spent Bleaching Earth (SBE), Bahan Bakar Alternatif, Rotary Kiln, Clinker Robiansyah; Mustain; Martha Aznury; Safaruddin
KINETIKA Vol. 13 No. 03 (2022): KINETIKA 01112022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Hazardous waste of Spent Bleaching Earth (SBE) which is processed by PT. Semen Baturaja (Persero) Tbk is used asan alternative fuel to replace coal, whose price continues to rise, because SBE still contains oil in it. However, the useof hazardous waste of SBE can affect the specific heat consumption needed in the operation of the rotary kiln machineand the ash content in it can affect the quality of the clinker produced. With the percentage of SBE alternative fuelmixture to coal fuel of 0%, 1,12%, 2,07%, 3,13%, 4,09%, 4,93%, 6,13% and 6,88%, the analysis carried out on ofspecific heat consumption, fuel cost efficiency, rotary kiln machine operation and its effect on the quality of the clinkerproduct produced. From the results of this case study, with an increase in the percentage of the SBE mixture, the ashvalue of the mixed fuel trend to increase but is not significant, while the calorific value of this fuel mixture trend todecrease. The conclusion that can be drawn from the use of hazardous waste of SBE as an alternative fuel with amixture percentage of 0% to 6.88% is that as the fuel mixture ratio increases, specific heat consumption decreases,fuel cost efficiency increases, fuel requirements become lower, compared to not using hazardous waste of SBEalternative fuel and has no significant effect on the quality of the clinker product produced.Key words: Hazardous waste, Spent Bleaching Earth (SBE), Alternative fuel, Rotary kiln, Clinker
EFEKTIVITAS KULIT UDANG (METAPENAEUS MONOCEROS) SEBAGAI BIOKOAGULAN PADA AIR SUNGAI KELEKAR MENJADI AIR BERSIH : (STUDI KASUS : AIR SUNGAI KELEKAR SEBAGAI AIR BERSIH DI INTAKE WATER PLANT PLTGU INDRALAYA) Indah Pratiwi
KINETIKA Vol. 13 No. 01 (2022): KINETIKA 01032022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Research on the effectiveness of shrimp shells as biocoagulants in improving water quality has been carried out. This study aims to determine the ability of shrimp shell waste as a biocoagulant to improve water quality and the effect of water on the parameters of pH, Conductivity, Turbidity, Silica and Fe. Contacting the coagulant with river water using a jartest at 200 rpm for 1 minute. The effective concentration of chitosan coagulant was 100 mg/l and Aluminum Sulfate which decreased more was 150 mg/l. The results showed that chitosan was able to reduce the parameters of Conductivity 51.95%, Turbidity 87.14%, Silica 58.21% and Fe 75.80%. Aluminum sulfate coagulant with a dose of 150 mg/l can reduce 39.32 % Conductivity, 65.80 % Turbidity, 38.75 % Silica, and 41.29 % Fe. The effectiveness of the shrimp shell coagulant is higher than the aluminum sulfate coagulant, it shows that the shrimp shell is able to act as a coagulant for the kelekar river water into clean water at PLTGU Indralaya.
EKSTRAKSI ZAT WARNA ALAMI BUNGA TELANG DENGAN METODE EKSTRAKSI SOKLETASI Sofiah
KINETIKA Vol. 13 No. 01 (2022): KINETIKA 01032022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The Butterfly Pea (Clitoria ternatea) is one of the plants whose all parts have functional benefits for the human body. Theflower petals are reported to be useful as antioxidants, antidiabetic, antiobesity, anticancer, anti- inflammatory, antibiotic andprotect liver issue. One of the natural pigments that may be used as natural dyes is anthocyanin. Butterfly Pea (Clitoriaternatea) is a source of blue pigment or anthocyanin. One of the ways so thatthe butterfly pea can be consumed by the public isby utilizing the potential of natural pigments from the extract ofthe telang flower and some of the content in it can be done byapplying it as a natural food coloring. This is one of the efforts that can be done to prevent the increasing use of unsafesynthetic dyes by replacing them with the manufacture of natural dyes. Anthocyanin is a natural pigment that gives blue colorto the butterfly pea (Clitoria ternatea). Anthocyanin extraction using soxhletation method with aquadest solvent and extractiontime (90, 120 and 150 minutes). This study aims to determine the best extraction time for the extraction of anthocyanins frombutterfly pea. The research parameters included qualitative and quantitative analysis of anthocyanins (extract yield, totalanthocyanin concentration, and antioxidant activity) of butterfly pea extract. From the results of the study, it was found thatthe best condition is extract with time variation 90 minutes and 10 times circulation using aquades as a solvent with extract ofyield 2.36%, total of anthocyanin concentration 80.105 mg/L, and antioxidant with IC50 35.91.
The Oxygenated Drinking Water Erwana Dewi
KINETIKA Vol. 13 No. 01 (2022): KINETIKA 01032022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Oxygen is an essential substance for humans, available in the air and can be freely enjoyed. At present, oxygen is not only supplied through the respiratory system, but is also supplied through the digestive system. The alternative is to supply oxygen through drinking water. In this research the design process will be carried out to produce drinking water that contains oxygen, or oxygenated drinking water. The process to make drinking water by using the membrane RO (Reverse Osmosis) and the processed by injecting oxygen using Aquatic Oxygenator. In the procesess of the RO membran and the Aquatic Oxygenator has oxygen as 100 ppm optimum in drinking water. The effect of oxygenization time and temperature on oxygen levels is the dissolved oxygen content in drinking water does not increase significantly, only in the range of 100-113.4 ppm. When the oxygenization temperature increases, the solubility of oxygen in water decreases. The effect of drinking water volume and oxygenation time on dissolved oxygen levels in water  the dissolved oxygen level reaches 100 ppm, and continues with oxygenation, the measurement number does not change.
A QUALITATIVE ANALYSIS OF FORMALIN ON TOfu CIRCULATED IN KUPU VILLAGE MARKET, BREBES CITY Yuniarti Dewi Rahmawati
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Tofu has a high protein content and water content reaches 85% so that tofu does not last long. One way to prevent damage to foodstuffs is to add preservatives. Formalin is a preservative that is sometimes misused as a preservative in foodstuffs. The research that has been conducted aims to determine the presence or absence of formalin in tofu sold at the Pasar Desa Kupu. The type of research used is descriptive research. Five samples of tofu obtained from traders at Pasar Desa Kupu were then analyzed using a qualitative method using a color reaction. All samples showed positive results with the loss of KMnO4 color and became clear. The same results were shown by the dragon fruit peel kit method.
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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Abstract

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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Abstract

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
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Abstract

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.
CHARACTERISTICS OF GLASS SOAP BASED ON VIRGIN COCONUT OIL (VCO) WITH THE ADDITION OF BASIL LEAF EXTRACT (OCIMUM BASILICUM L.) AS ANTISEPTICS Meilianti; Idha Silviyati; Adi Syakdani
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Soap is formed from a mixture of fat or oil with sodium or potassium salts made through the saponification process ofthe reaction between triglycerides and alkali. Glass soap is a innovation in the form of solid soap which has a smallsize in the form of a thin sheet that is easier to carry when active outside the home. Basil leaves contain flavonoid,tannins, saponins and other active ingredients that can be used as antibacterial. Glycerin can be used as a mixture insoap making as a plasticizer because it can make the texture of the soap elastic. The process of making glass soapuses a saponification process with variations in the addition of glycerin concentrations (w/w) of 5.5%, 10.5%, 15.5%,20.5%, 25.5% in curing time for 15 days. The results of the analysis showed that glass soap with the addition of 10%glycerin concentration with a curing time of 15 days was the best formulation and met the characteristics of SNI. Theresults of the analysis showed that the water content was 0.45%, the material was insoluble in ethanol 1.20%, ALB1.5%, free alkali 0.05%, and pH 10.
COFFEE AIR FRESHENER GEL PRODUCTION BASED ON KAPPA CARRAGEENAN, XANTHAN GUM, AGAR-AGAR WITH PATCHOULI OIL ADDITION Rahma Aji Kurniawan; Siti Khodijah; Erwana Dewi; Taufik Jauhari
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Air freshener products on the market generally use synthetic fragrances that are harmful to health. Air fresheners can be made from natural ingredients based on kappa carrageenan, xanthan gum, and agar, using coffee oil as a fragrance with and patchouli oil as a natural fixative can be aromatherapy to relieve stress and stimulate optimal brain performance. This research aims to obtain the best composition of kappa carrageenan, xanthan gum, agar and patchouli oil concentrations by comparing the research products with air freshener gel sample of commercial product. The method used is by varying the composition of kappa carrageenan, xanthan gum, and agar as a gelling agent;concentrations ofgelling agent 4 - 6% w / w; and concentration of patchouli oil 0 – 1.5%. Product analisys includes: gel strength, gel syneresis, gel viscosity at 80oC, moisture content, liquid evaporation and weight loss tests, GC-MS analysis, aroma retention test, and hedonic test. The fragrance gel product produced from a mixture of kappa carrageenan, xanthan gum, and agar with a ratio of 2: 1: 1 at concentration gelling agent 6% had the lowest syneresis 0.48% and gel strength 937.1891 gf / cm2. The addition of patchouli oil which was the most effective in maintaining fragrance, with the smallest total evaporation and weight loss was 1.5% and was quite favored by the panelists.

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