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INDONESIA
Seminar Nasional Teknik Kimia Kejuangan
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science
Prosiding Seminar Nasional Teknik Kimia Kejuangan adalah media online dari makalah yang telah diseminarkan pada acara Seminar Nasional Teknik Kimia “Kejuangan” (SNTKK). SNTKK merupakan agenda tahunan yang diselenggarakan oleh Program Studi Teknik Kimia FTI UPN ”Veteran” Yogyakarta. Seminar ini merupakan sarana komunikasi bagi para peneliti dari perguruan tinggi, institusi pendidikan, serta lembaga penelitian maupun industri, dalam mengembangkan teknologi kimia untuk pengolahan sumber daya alam Indonesia.
Arjuna Subject : -
Articles 588 Documents
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Co-Pyrolysis Characteristics of Indonesia Low Rank Coal and Oil Palm Empty Fruit Bunch Siti Zullaikah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Co-pyrolysis behaviors of Indonesia low rank coal and oil palm empty fruit bunch were studied in a droptubed reactor under nitrogen atmosphere. The pyrolysis temperatures were 300 oC, 400 oC, 500 oC, 600 oC and 700 oC, respectively. Five differents biomass ratios (coal/oil palm empthy fruit bunch (w/w): 100/0, 75/25, 50/50, 25/75, 0/100) were used. Gas and tar components were analyzed by a gas chromatograph and a gas chromatography–mass spectrometry, respectively. Under co-pyrolysis conditions, the gas volume yields are lower than the calculated values and H2 content in the gas phase was higher. The changes of gas yield and components are probably caused by the secondary reactions and tar decomposition.Co-pyrolysis tar contains more acid and ester compounds. The addition of biomass changes the atmosphere during the pyrolysis process and promotes tar decomposition. The results of char yields were higher than the calculated values during co-pyrolysis.
Pengujian Slim-tube untuk Memperkirakan Minimum Miscible Pressure pada Studi CO 2 Enhanced Oil Recovery IGS Budiaman
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Implementation of enhanced oil recovery (EOR) usingcarbon dioxide (CO2) to increase oil recovery has been widely implemented in the world, but in Indonesia, especially in Pertamina is still in the feasibility study stage. One of the parameters is very important in supporting the successful implementation of CO2 EOR is the thermodynamic properties in the form of minimum miscible pressure (MMP). Considering Indonesia is a tropical country and the oil reservoir is relatively deep, so that the temperature of the reservoir is relatively high which would provide great value of MMP and will have an impact on the oil recovery factor ability.MMP testing is very important to be done in the laboratory using the slim-tube. On the condition of CO2 MMP initially is being mixed with short to medium-chain hydrocarbons in the reservoir, then further with heavier hydrocarbons. Mixing CO2 into oil will lead to occurrence of oil volume swelling and decrease its viscosity. The phenomenonof swelling volume of oil in the reservoir may lead to increased capillary pressure so that the oil is easier to flow. While the decline in oil viscosity increases mobility of oil or in other words will lower the water-oil mobility ratio. Decreased mobility ratio ofthe water-oil may increase oil reserves that can be produced. Based on the slim-tube experiments in the laboratory using a sample of oil field "X" Pertamina at a temperature of 260oF, the MMP is estimated about 3000 psi
Peningkatan Mutu Simpan Buah dengan Coating Film Komposit Tapioka-Kitosan Nur Rokhati
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

In the tropics, damage of fruit after harvest is a major problem that must be solved. This damage is usually caused by metabolic activity in progress at the fruit. If the respiration process involving oxygen from the environment is not controlled then it will accelerate maturity and decay of the fruit. Besides that, horticulture very risky contaminated by fungi and microbes. The results of the analysis of Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM) showed that the mixing of chitosan and starch solution can produce a homogeneous film due to the interaction between the hydroxyl groups of starch and the amine groups of chitosan. Application of coating films on strawberries for the shelf life of 10 days was found that the lowest weight loss occurs in pure films of the high molecular weight chitosan (± 200 kDa), whereas the composite films of chitosan and starch which produces the lowest weight loss is the medium molecular weight chitosan (± 100 kDa). The low molecular weight chitosan (± 50 kDa) have the best antimicrobial activity. The addition of tapioca can reduce the antimicrobial activity of chitosan films.
Pemodelan dan Simulasi Secara Tunak dan Dinamik pada Pengeringan dengan Rotary Dryer Herry Santoso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Rotary dryer is one of the dryers that has many uses in chemical, pharmacy, and food industries. The model which represents the actual condition of rotary dryer is needed to make the designing and scaling-up of this dryer easier. The objective of this study is to proposed mathematical model of drying process with rotary dryer in the form of distributed parameter system and then simulate this drying process in its steady state and dynamic condition. The variables that was observed in this model are moisture in the solid feed, moisture in the drying air, temperature of the solid feed, and temperature of the drying air. This non-linear partial differential equations was modified to non-linear ordinary differential equations using finite difference method and then solved using numeric integration technique. The steady state simulation shows that changes in inlet variables have influence to the observed variables on the outlet of rotary dryer with the greatest effect is from the temperature of drying air and the lowest effect is from the temperature of solid feed. Furthermore, the dynamic parameters obatained from dynamic simulation can be used for controlling purpose.
Sintesis Karbon Aktif dari Kulit Jeruk dengan Aktivasi Menggunakan Subkritik Air Arenst Andreas
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Low-cost and environmental friendly activated carbon was synthesized from orange peels (citrus nobilis var. microcarpa) which activated by subcritical water. Orange peels were first carbonized in an electrical furnace at temperature of 800oC for 2 hours. Activation process of the carbonized orange peel were done in 1 hour inside a reactor at temperature of 200oC and pressure from 120 to 220 bar. Mesoporous activated carbon with highest surface area was obtained at pressure of 170 bar, where the surface area was 491.840 m2/g. The orange peel derived activated carbons were tested in the adsorption of methylene blue (MB) from aqueous phase. The adsorption study was done under batch condition with various initial concentration of MB solution. The initial concentrations of MB used were 2, 4, 6, 8 and 10 ppm. The adsorption of MB followed the pseudo-second-order rate equation, and fit well to the Temkin isotherm, while the adsorption mechanism was affected by the intraparticle diffusion and surface diffusion.
Subcritical Water Extraction of Essential Oils from Indonesia Basil (Kemangi) Leaf: Effects of Temperature and Extraction Time on Yield and Product Composition Siti Zullaikah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

This study investigated the extraction of essential oils from Indonesia basil (kemangi) leaf which have a potential antibacterial agent using subcritical water. Effects of temperature and extraction time on yield and product composition of basil oil obtained were study systematically. In this work, experiments were performed in a tubular stainless steel reactor at temperature from 150oC to 215oC for 1 to 9 h of extraction at a certain pressure (P= 40 bar)used fresh basil leaf. The yield and product composition of basil oils obtained were affected by temperature and extraction time. The yield of basil oil increased with increasing extraction time. However, yield of basil oil decreased from 1.41% to 1.2% with increasing temperature from 200oC to 215oC for 9 h of extraction time. The composition of essential oils obtained were varied depending on the temperature of extraction. Components in the basil oil which have an antibactial agent such as 1,8 Cineole, Tricosane and Eugenol were identified using subcritical water at temperature 200oC.
Optimizing The Hydrolysis Acid Process Of Cellulose From Post-Harvest Sugarcane (Saccharum Officinarum) Residue For Bioethanol Production Alivia Alfiarty
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Tons of post-harvest sugarcane is produced in Indonesia as agricultural residue. This lignocellulosic material is a potential source of second generation ethanol production. Diluted acid hydrolysis is one of the most efficient pre-treatments for hemicellulosic solubilization. The hydrolysate content is rich in glucose, which can be converted to ethanol by yeast or other micro-ogranism. This work measures the impact various methods of diluted acid hydrolysis (acid concentration, solid: liquid ratio) have on glucose concentration in hydrolysate. Statistical analysis was used to determine the most efficent formule to increase glucose concentrations. An acid concentration of 0,6 M, an S:L ratio of 5:100 (g:ml) with steam explosure was established and validated as the optimum pre-treatment conditions for the acid hydrolysis process. Under such conditions, hydrolysate with 25 % of glucose was obtained.
Potensi Pati Ganyong (Canna edulis) dan Pati Singkong dalam Produksi Asam Levulinat Angela M
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Levulinic acid (LA) is a platform chemical which isproduced using petroleum-derived raw material thatis having crisis these days. Therefore it is needed tofind an alternativee raw material. One of them is a renewable tuber which is abundantly in Indonesia. The goal ofthis research is to study the potentiality of starch derived from canna edulis and cassava in producing LA and the effect of reaction conditions i.e. the concentration of acid catalyst and the reaction temperature on the yield of LA. This research was performed in a pressurized stirred reactor for 60 minutes. The variables usedare the concentration of sulfuric acid catalyst (5%, 10%, 15%-wt.) and the reaction temperature (150oC and 180oC). Ratio between starch and sulfuric acid is 1:10 (wt./v). The carbohydrate content in starch was analyzed by Anthrone method. Whereas, the product was analyzed by High Performance Liquid Chromatography (HPLC). The result of this study shows that the reaction temperature and the carbohydrate content in starch determine the yield of LA. However, the concentration of sulfuric acid affects the type of starch instead ofthe yield of LA. The further research will study about the effect of starch characteristic into the yield of LA.
Effect of pyrolisis temperature and number of molasses’s adhesive toward quality of mud cake based bio briquette Andy Candra
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Biomass waste utilization can be one solution to find another alternative fuels that can be renewable. Two kinds of biomass which were used in this research are mud cake (produce from rotary vacuum filter in sugar production process) which was used as the raw material and molasses which was used as an adhesive. First, the mud cake was dried and pyrolyzed became charcoal. Then, the charcoal mixed with water and molasses, formed into a cylindrical shape, and dried it up to be a combustible bio briquettes. The quality of bio briquette was dependent on kind of raw materials, quantity of adhesive, temperature of pyrolysis, and compaction pressure. The result: the lower pyrolysis temperature, the more yield of charcoal, but it followed by the shorter flaming time, the shorter combustion time, and lower calorific value. Besides, the more molasses use, the bio briquette become more compact and more flammable but it had shorter combustion time. Pyrolysis temperature influences the compressive strength, besides, amount of adhesive influences the flaming time and combustion time. Overall, the best bio briquette can be produced with conditions of pyrolysis temperature 600 °C and ratio between molasses and charcoal 0.3.
Preliminary Study of Methyl Acetate Hydrolysis Using Reactive Dividing Wall Column Herry Santoso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Methyl acetate is generated in a polyvinyl alcohol (PVA) plant as a byproduct with little industrial applications. One of the best considerations in reusing methyl acetate is to convert methyl acetate back to methanol and acetic acid, which serve as raw materials in PVA plant, using hydrolysis reaction. Methyl acetate hydrolysis using reactive dividing wall column is studied in this paper. Reactive dividing wall column incorporated reactive distillation column and separation column into a single column. Reactive dividing wall column is known for its prospective ability to reduce both capital and energy cost of a process. The aim of this study is to develop several design configurations of reactive dividing wall column for hydrolyzing methyl acetate to produce methanol and acetic acid. The process and economic performances of each design configuration are then evaluated and compared with the help of Aspen Plus process simulator in order to find the best reactive divided wall column design for methyl acetate hydrolysis.

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