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INDONESIA
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 215 Documents
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REVIEW OF SATURATED STEAM PARAMETER IN DRUM LONGITUDINAL COIL BOILER BY USING SOLAR BUILDING Tahdid, Tahdid
KINETIKA Vol. 8 No. 1 (2017): KINETIKA 01032017
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Steam power generation is power generation’s technology that using rankine cycle which the chemical energy from the fuel converted into heat to heating the water until became mechanical energy whose moved the turbin and then converted again into electricity in generator. Many factors affect the efficiency of steam power generation. Temperature and pressure are the main parameters of the measurement of their effectiveness. And the value of temperature and pressure is influenced by the volume level of the steam drum. It is therefore necessary to assess the volume level of the steam drum to obtain the appropriate steam drum volume level to obtain optimum steam power generation work. In this research, the variable of level volume used is 30%, 40%, 50%, and 60%. In condition of non-steady state saturated steam with operating conditions of AFR in 16,5 and fuel flow rate in 1,.51 l/h. The process is done until the target of 25 bar pressure is reached. And based on the research results obtained that the optimum conditions of boiler is at 50% level volume.
Rancang Bangun Alat Gasifikasi Biomassa (Tongkol Jagung) Sistem Updraft Single Gas Outlet (Pengaruh Variasi Laju Alir Udara Terhadap Produk Syngas) Maulana, Robby
KINETIKA Vol 1, No 1 (2013): TEKNIK ENERGI 01012013
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

Teknologi gasifikasi merupakan salah satu cara untuk memanfaatkan limbah biomassa menjadi energi. Gasifikasi adalah suatu proses konversi bahan bakar padat menjadi gas mampu bakar (CO, CH4, dan H2) melalui proses pembakaran dengan suplai udara terbatas. Jenis gasifier yang digunakan dalam penelitian ini adalah sistem updraft. Biomassa yang digunakan sebagai bahan bakar gasifikasi yaitu tongkol jagung yang telah dikeringkan selama 2 hari. Untuk memperoleh syngas dengan komposisi yang optimal maka dilakukan variasi laju alir udara yaitu 96,75 lt/min, 114,48 lt/min dan 129,81 lt/min. Dari variasi laju alir udara tersebut akan didapatkan laju alir udara yang optimal untuk pembakaran material karbon (tongkol jagung) untuk menjadi gas mampu bakar dengan menggunakan updraft single gas outlet gasifier. Untuk mendapatkan gas mampu bakar temperatur yang harus dicapai selama proses oksidasi yaitu 1000°C. Penelitian ini bertujuan untuk meninjau efisiensi dari laju alir udara dalam proses pembakaran untuk membentuk syngas.
CHARACTERISTIC AND CATALYTIC FOR MORDENITE AND ZSM-5 REACTION IN PRODUCE HYDROCARBONS Zamhari, Mustain
KINETIKA Vol 4, No 2 (2013): KINETIKA 01072013
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

Conversion of methanol to the use of the treated mordenite and ZSM-5 studied in this description. Mordenite catalyst activity which showed a decrease in activity without modified quickly. After hydrothermally dealuminated mordenite done and acidification with HCl, it turns out that longer life of the catalyst thus obtained. Furthermore treated mordenite showed high selectivity to olefin formation. Acidity is measured with predictably by Spectrophotometer Infra Red  observations of pyridine adsorbed, also signal of the adsorbed NO. Number of sites was reduced in the presence of acid dealumination treatment. There is no longer detectable acidity found in mordenite which has dealuminated well. Pore volume measured by the adsorption of toluene. The better stability and selectivity of the catalyst in forming various olefins in the use of the treated mordenite discussed here in terms of acidity and shape selectivity.
CO-GASIFIKASI SISTEM DOWNDRAFT (DITINJAU DARI PENGARUH LAJU ALIR UDARA BAHAN BAKAR TERHADAP PRODUK SYNGAS) Puji Astuti L, Sutini
KINETIKA Vol. 8 No. 2 (2017): KINETIKA 01072017
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The potential of coal is large enough in Indonesia spur to do the increased utilization, one of them in the form of gasifikasi.Gasifikasi coal is one form of utilization of natural resources that continue to be developed because of its abundant potential.However, the process of gasification with coal fuel generates a lot of CO2 emissions and NOx and SOx pollutants. Therefore, to reduce the amount of emissions produced is a combination of fuel in the gasification process by utilizing biomass (coconut shell and wood waste). Mixing coal and biomass is expected to increase the calorific value and reduce the emissions produced. This research was conducted to get the product of syngas with good flame in fire tube test.. In this research, the changed variable is air flow rate with valve opening with 60% : 9.11 m3/hr, 70% : 10.02 m3/hr, 80% : 10.93 m3/hr, 90% : 11.48 m3/hr, 100% : 12.37 m3/hr and comparation of fuel composition used and time operating as fixed variable. Based on the research, it is known that air flow rate of fuel that have good quality with caloric and best flame on9,11 m3/hr which have red characteristic with stable.
PENGARUH WAKTU FERMENTASI TERHADAP BIOGAS YANG DIHASILKAN DARI LIMBAH INDUSTRI TAHU SYARIF, AIDA
KINETIKA Vol. 1 No. 1 (2011): KINETIKA 01032011
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Konversi Biogas dari Industri tahu dilakukan dalam Prototipe reaktor anaerob dalam skala rumah tangga atau skala kecil dengan menggunakan teknologi fermentasi bakteri yang sederhana dan mudah dalam pengaplikasiannya. Bahan baku yang digunakan juga mudah didapat yaitu limbah industri tahu, baik limbah padat maupun cairnya. Tujuan penelitian ini untuk mengetahui pengaruh waktu fermentasi terhadap laju pembentukan biogas dan efektivitas limbah tahu sebagai bahan baku fermentasi dengan variasi penambahan ampas dan tanpa ampas. Hasil penelitian menunjukkan reaktor hasil rancangan ini layak untuk digunakan. Variasi dengan penambahan ampas memiliki hasil yang lebih baik dengan kandungan metan sebesar 38,43 % dan tekanan gas maksimum 7 psi, sedangkan variasi tanpa ampas hanya mengandung metan sebesar 35,80 % dan tekanan maksimum 3 psi.
BIODIESEL PRODUCTION FROM PALM OIL MILL EFFLUENT BY USING THERMOMYCES LANUGINOSUS LIPASE AS A CATALYST Rachmadona, Nova
KINETIKA Vol. 8 No. 3 (2017): KINETIKA 01112017
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Biodiesel production via enzymatic transesterification using Palm Oil Mill Effluent (POME) as the raw material and Thermomyces lanuginosus lipase (TLL) as the catalyst is proposed in this study. POME is one of the waste water discharged from the sterilization process, crude oil clarification process and cracked mixture separation process of palm oil in mills. POME contains a high amount of organic matter, oil and grease, total solids and suspended solids. POME could be an alternative raw material for producing biodiesel because of its high oil and fat content that could be converted into biodiesel. High Free Fatty Acid (FFA) makes the conversion seems impossible because if using chemical transesterification, it will form saponification. Enzymatic transesterification is the solution for this problem. In this study, the conditions for biodiesel production included lipase content of 0.3%, a methanol/oil molar ratio of 6:1, a water content of 4.7%, a stirring speed of 500 rpm, a reaction temperature of 30 °C and a reaction time of 24 hour. The biodiesel yield was achieved at 81.87%%.
PREVENTION OF CORROSION RATE BY NATURAL INHIBITOR PAPAYA LEAF EXTRACT Bow, Yohandri
KINETIKA Vol 3, No 3 (2012): KINETIKA 01112012
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

Corrosion is an event of damage or deterioration of a metal caused by reaction with the environtment. Corrosion process can be prevented by the addition of corrosion inhibitor. Papaya leaf extract is an organic material that could potentially be used as a corrosion inhibitor because it contains N-acetyl- glukosamida and amino acid. The purpose of this study is  to determine the effects of brine concentration and surface area on the rate of corrosion of a metal plate that can be used as reference incorrosion control on metal plate. Determination of corrosion rate use weight loss methods, with medium marinade variation 3.5%, 5% and 6.5% salt water and a sample of the iron plates of different sizes. Each concentration of the medium contained four samples with different sizes of iron plates immersed for 30 days. The results showed the highest corrosion rate found on a metal plate without inhibitor with a value of 0.1331 mm/ year . The  greater concentration of the medium the corrosion rate will be higher. The smaller surface area of iron plate the corrosion rate will be higher.
ANALYSIS CHLORINE DISSLOVED WITH ELECTROMETRIC Bow, Yohandri
KINETIKA Vol. 6 No. 2 (2015): KINETIKA 01072015
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Based on Clark type electrode, chlorine electrode has been made for measuring chlorine electrometrically. The electrode consisted of platinum working electrode, silver/silver chloride reference electrode, potassium chloride as an electrolyte, polyethylene polymer (32 μm thick) membrane and the electrode body was made of polyester resin. The result of the study indicated that the sensor was suitable for determining the dissolved chlorine at optimum operating characteristics with an applied voltage of 0.9 Volt, using saturated solution of potassium chloride as an electrolyte. The steady state reduction current was achieved after 12 seconds. The standard calibration curve (concentration dissolved chlorine-reduction current) showed a linier relationship in the range of 2.9 – 30 ppm. The analytical performance characteristic of the probe indicated: least square fitting test y = 0.4214x - 0.3714, sensitivity 0.3714 ppm/μA and detection limit 2.9 ppm.
Prototype Boiling Ketupat Type of Batch Study of Heat Transfer Coefficient Into Condensor Erlangga, Reli
KINETIKA Vol 1, No 1 (2013): TEKNIK ENERGI 01012013
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

So far for producing ketupat done using boiling system open by using a regular steamer so much heat loss occurs due to his high consumption of fuel, to reduce the fuel consumption of the writers tried to make a prototype of a batch type boiling ketupat equipped with condenser.Purpose to condensation steam in boiling water so that it does not require the addition of water.Energy consumption in a way traditional ketupat boiling takes time for 4 hours for all processes with the same time as that of 285000 kJ/kg while using a prototype wave energy consumption i.e. batch type of 37341 kJ/kg for cooling fluid flow rate 5 lt/min, 37802 kJ/kg for cooling fluid flow rate 10 lt/min and 46100 Lt/min for the coolant flow rate 15 lt/min. Influence of flow rate of cooling fluid on the heat transfer coefficient is proportional, the greater the flow rate of cooling fluid then the greater the coefficient of heat transfer rates. This is due to the heat lost when still on the way to the condenser and heat lost due to contact between the condenser with outside air.
PENURUNAN CADMIUM DARI LIMBAH CAIR INDUSTRI PULP MENGGUNAKAN MEMBRAN KERAMIK BERBAHAN ADDITIVE DEDAK PADI ., Sisnayati
KINETIKA Vol. 6 No. 3 (2015): KINETIKA 01112015
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The purpose of this research is to find an alternative pulp industrial waswater treatment system with filtration using ceramic membrane made from a mixture of natural clay, iron powder and rice bran as additive material in various composition. The experimental rig is equipped with silica and carbon active filter, ceramic membranes module, flowmeter, pressure gauge, and the circulation pump. The tested liquid waste is derived from one of the pulp industry in Sumatera Selatan. Process variables studied were operating time, filter composition and rice branparticle size. Parameters analyzed were TDS (Total Dissolved Solid), TSS (Total Suspensi Solid), pH, EC(Electrical Conductivity) and the concentration of Cadmium. Scanning Electron Microscope (SEM) analysis offilter surface and Brunnauer-Emmet Teller (BET) analysis for pores size determination were also performed. The results obtained showed that the application of ceramic membrane in composition of 87,5% of natural clay, 10% of material additive rice bran and 2,5% of iron powder can decrease cadmium concentration in pulp mill effluent up to 99,9%. Permeate flux was significantly decrease after 30 minutes. The SEM images and BET analysis of pore distribution showed that ceramic membrane has a random pore structure and can be classified as the microfiltration membrane.

Page 6 of 22 | Total Record : 215

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