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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.
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Articles 76 Documents
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Search results for , issue "2017: PROSIDING SNTKK" : 76 Documents clear
Pengaruh Asupan Berbagai Jenis Biji-bijian Terhadap Peningkatan Kadar Asam Urat pada Tikus Putih Jantan (Rattus norvegicus) Dhanang Puspita; Rosiana Eva Rayanti; Yohana Ikka Maylani; Theresia Pratiwi Elingsetyo Sanubari
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Grains known as foods that contain purine. The existence of purines can cause gout patients/ hyperuricemiaincreased levels of uric acid in the blood. High levels of uric acid cause gout arthritis. This study aims todetermine the increase in uric acid levels in male rats (Rattus norvegicus) by the intake of various types ofgrain. Male rats per group were given intake melinjo (Gnemon gnetum), soy (Glycine max), white rice(Oryza sativa), peanuts (Arachis hypogaea), red beans (Phaseolus vulgaris), green beans (Vigna radiata),and BR1 (as control). Long treatment for 15 days. Calculation of uric acid levels in male rats at the start ofthe day to 0, 5, 10, and 15. The measurement results showed that rats with intake a diet melinjo seeds haveelevated levels of uric acid highest is 20 mg/dl and the lowest is peanuts (7,2 mg/dl), while control is 4,2mg/dl. The amount of uric acid content in rats with grain intake showed a high purine content. This studyconcluded that contribute grain in elevated uric acid levels are highest is melinjo, rice, green beans,soybeans, red beans, and peanuts.
Isolasi Alginat Rumput Laut Coklat (Sargassum sp.) menggunakan Jalur Kalsium Alginat Susiana Prasetyo S; Olivia Juliani; Asaf Kleopas Sugih
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Alginate has been widely used in industrial field because of its natural properties as gelling agent. Brownseaweed, especially Sargassum and Turbinaria as the alginate sources are widely grown in Indonesia; butunfortunately there has yet to be any alginate industry in Indonesia. Alginate content in Sargassum isconsidered quite large, about 35%, whereas alginate content in Turbinaria is only around 20-25%. In thisresearch, sodium alginate was isolated from dried brown seaweed (Sargassum sp.) which first passedthrough the acid treatment using 0,5%-b/v HCl and alkaline treatment using 0,5%-b/v NaOH. Extraction wasdone in batch, using 2%-b/v Na2CO3 solvent. The chosen post-treatment method was through the Ca-alginatepath with experimental design Reponse Surface Methods-Central Composite Design with 5 center point. Thevaried variable was the concentration of CaCl2 (0,11 – 2,09 M) and the ratio of CaCl2 solution/alginateextract (0,48 – 4,02 g/g). The result showed that higher concentration of CaCl2 increased the yield, viscosity,and ash content. As the ratio of CaCl2/alginate extract got higher, the viscosity had the tendency to decreaseand the ash content increased. Yield of the obtained sodium alginate powder was 6,95 -30,7%; 1,48 – 11,85cP viscosity; ash content about 18,46 – 52,65%; and water content around 6,14 – 8,32%. The optimumcondition was obtained at CaCl2 concentration of 1,02 M and the ratio of CaCl2/alginate extract about 2,01g/g with 27,72% yield, 11,38 cP viscosity, 19,56% ash content, and 6,14-8,32% water content of sodiumalginate.
Optimasi Proses Dealuminasi Modernite sebagai Katalis Perengkahan Minyak Goreng Bekas menjadi Biofuel Didi Dwi Anggoro; Luqman B; Setia Budi S; Nita A; Rohmadona H; Sigit B
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Used cooking oil is a food industry waste and household waste, which has high potential to be used as biofuel feedstock, which has the chain of carbon and hydrogen atoms high. Biofuel can be produced by the method of catalytic cracking. Modernite is potential to be used as an acid catalyst for the cracking process. To get a good acidity catalyst, modernite can be modified catalyst by dealumination process. The raw material used is used cooking oil and used modernite type zeolite catalyst with a trademark CBV 21A, which having a mole ratio of SiO2 / Al2O3 of 20 and a surface area of 500 m2/g. The reactor used in the form of a catalytic reactor and a three-stage process i.e dealumination of the catalyst, catalyst calcination process, and catalyst testing to reaction of used cooking oil catalytic cracking. Dealuminated catalyst is carried on a temperature that is 30, 50, 70°C. Modernite catalyst dealumination results included in the pipe nozzle and injected into the furnace by flowing N2 gas at a temperature of 600oC for 5 jam. For catalyst testing for used cooking oil cracking reaction under temperature 450 oC. In this study, the optimization equation for the liquid product is Y = 2,801712 + 0,296807 X1 + 0,579137 X2 + 0,486784 X3 – 0,1875 X - 0,2125 X2X3 – 0,211775 X1^2 + 0,467905 X2^2 – 0,59326 X3^2
Pengaruh Penambahan Carboxymethyl Cellulose (CMC) dan Gelatin sebagai Bahan Pengikat pada Pembuatan Tablet Kulit Manggis (Garcinia Mangostana L) Ahmad Shobib; MF. Sri Mulyaningsih; Ery Fatarina
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Mangosteenis one of thefavorite fruits are favored by the people of Indonesia.Mangosteen is a plant that has a high economic value because in addition to consume fruit, mangosteen peel can also beused in traditional medicine, namely to treat upset stomach, diarrhea, dysentery, and wound infections.The main content of the compounds contained in the skin ofthe mangosteen is axanthone has anti microbial properties, antiinflammatory, antioxidant, and can inhibit the growth of colon cancercells. Mangosteen rind discarded, it can be developed as drug candidates. Tablets in solid dosage forms containing drug with or with out filler.Binder affects the quality ofthe physical tablet. This study usedthe CMC(Carboxymethyl celulose) and gelatin as a binderin the manufacture of tablets mangosteen skin.Research is descriptive research. The object under study is mangosteen skin tablet. This study covers the water contentand physical characteristics of skin mangosteen tablets. The result showed mangosteen skin moisture content of 67.11% and 32.89% mangosteen skin powder. And the results of the study of physical characteristics of tablets obtained the optimum results from the binder used is a tablet with the addition of CMC mangosteen peel 15 grams. Achieved average weight uniformity(CV) was4.18%. Tablet hardness was 5.93kg. Fragility tablet is 0.46%. Tablet disintegration time was 8.89minutes.
Ekstraksi Senyawa Tanin dari Biji Alpukat (Persea americana mill.) menggunakan Pelarut Air Subkritis Qifni Yasa, A.S.; Daniyal Agung A.; Karyana Karyana
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Hydrothermal extraction of tannic acid from avocado seed using Subcritical water as a solvent wasevaluated at temperatures of 110oC, 120oC and 130oC, extraction time of 30-150 minutes and performedunder batch condition using Batch reactor, This method is easy to do and Enviromental-friendly. TheAnalytical method that used in this research was Spectrophotometry UV-Vis Method. Folin ciocalteau usedas a reagent that indicate Tannic Acid amount in Avocado seed extract. Under hydrothermal condition,water act as a extremely good solvent despite of its unique characteristics, high ion product and lowdielectric constant, moreover, in these condition, there is possibility for the occurence of tannic acid fromavocado seed. As a result, The total phenolic compound increased significantly from 110oC to 120oC andslowly decreased when temperature rised. Tannic acid is very sensitive to high temperature. The result of thisresearch showed that the optimum extraction temperature was at 120oC with 30 minutes of extraction time.The highest yield of tannic acid could approach 81 mg/kg of sample. Hydrothermal extraction isconsiderable method to isolate tannic acid and phenolic compounds from the waste of biomass.
Peningkatan Kualitas dan Kuantitas Produk Elektroplating Melalui Perbaikan Kualitas Larutan Kimia di Bak Elektroplating dengan Filter Elektroplating Luqman Buchori; Didi Dwi Anggoro; Dyah Hesti Wardhani
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Small electroplating industry is a small industry that is widely available in the city of Semarang. The mainprocesses in the electroplating industry are located in the coating process. This process occurs in theelectroplating bath. The quality of the metal coating is highly dependent on the quality of the chemicalsolution contained in the electroplating bath. If the chemical solution has good quality, such as the solutionwas clear, there are no impurities, the quality of the coating is also good. If the quality of the chemicalsolution is not good, then the results of the coating are also inferior such as there are bubbles in the layer, orthere is dirt on the die so that the coating process must be repeated. This will add to the cost of productionand a coating time so that increases operational costs. To solve this problem we need a system that canproduce a chemical solution that has good quality, clear, and there are no impurities. This system is calledthe filter electroplating. Results of electroplating filter application showed to increase the quantity andquality of production. The production capacity increased by 30% per day. The production turnover up 35%and profits increased by 45%. The chemical solution becomes clear and does not contain impurities so thatthe coating results becomes good.
Pembuatan Arang Aktif dari Serbuk Kayu Meranti Merah dengan Aktivator H 3 PO 4 firman firman; Wahyudi Wahyudi; Ayu Ningrum; MUhammad Taufik
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Red meranti wood dust is one of the wastes generated from the plywood industry. Red meranti wood dust contains 55.2% cellulose. The cellulose content can be converted to carbon through carbonization process. To increase the absorption capacity, the carbon is activated chemically and physically into active carbon. Active carbon can be used as an absorbent and purifying agent in the chemical industries, food or beverage, pharmaceutical, and as a catalyst. This study aims to find out the effect of the H3PO4 concentration in producing active carbon. The carbonization is done using pyrolysis proess at a temperature of 500C for 2 hours. The the carbon is chemically activated using H3PO4 activator with concentration variation of 1.5%, 3%, 4.5%, 6%, and 7.5% for 24 hours, and physically activated in the furnace at a temperature of 900 C 1 hour. The best result is in the 1.5% H3PO4 concentration, with1,9558% water content, 2.3140% ash content, 5.0900% volatile matter content, and 820.99 mg/g iodine absorption.
Strategi Pengendalian Persediaan Gas Acetylene pada Industri Migas (Studi Kasus pada PetroChina International Jabung Ltd.) Nur Indrianti; Fajar Maulana Wijayanto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Various materials and devices are needed to support production activities in the oil and gas industry. Therefore, optimal inventory strategy is required to satisfy the demand of the materials and devices with minimum inventory costs. This study deals with the evaluation of the inventory strategy of a private oil and gas company. As the object of the study, we considered acetylene inventory which is currently not managed properly. The strategy for acetylene inventory that has hitherto been implemented by the company is lot for lot ordering system in each period. In this study we applied Periodic Order Quantity, Wagner Whitin, and Silver Meal methods as alternative strategies for acetylene inventory control. The result of the study indicates that the Silver Meal method obtains optimal inventory schedule. It results in the lowest inventory costs compared to the other proposed methods and the current company’s strategy.
Penggunaan Radiasi Gelombang Mikro dalam Sintesis Karbon Aktif dari Serbuk Kayu Randu dan Aplikasinya untuk Menjerap Methyl Violet Widi Astuti; Luluk Siti Zulaechah; Stefanus Lian Kristian; Dinda Tri Novira
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Randu based activated carbons were prepared using chemical activation by potassium hydroxide (KOH) and applied as a potential adsorbent for the adsorption of methyl violet dye in aqueous solution. The technique of heating during activation can affect the physical and chemical characteristics of activated carbon structure. Conventional and microwave heating techniques represent two different types of activation methods. In conventional heating, there is a thermal gradient from the hot surface of the adsorbent to its interior until steady state conditions are reached. To avoid the thermal gradient, the microwave heating technique was used. Scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR) and N2 adsorption-desorption isotherm were used to study the morphology of adsorbent surface, surface chemical property and specific surface area-pore size distribution, respectively. Batch experiments were carried out to investigate the effect of pH, contact time and methyl violet concentration on sorption efficiency. The result shows that effective pH for methyl violet removal was 9. A greater amount of dye was removed with an increase in the initial concentration of dye and quasi-equilibrium reached in 180 min. The adsorption capacity of methyl violet dye by randu based activated carbon was 531.16 mg g-1.
Perbandingan Granular Starch Hydrolyzing Enzyme dengan Glukoamilase Pada Proses Sakarifikasi Konvensional Pati Casava untuk Memproduksi Etanol Hargono .; Andri Cahyo Kumoro; Bakti Jos
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

In a conventional cassava starch is converted into dextrins using liquefaction enzymes at high temperatures(90–120°C) during a liquefaction step. Dextrins are hydrolyzed into sugars using saccharification enzymesduring a simultaneous saccharification and fermentation (SSF) step. Recently, a granular starch hydrolyzingenzyme (GSHE), Stargen 002, was developed that converts starch into dextrins at low temperatures (30°C) andhydrolyzes dextrins into sugars during SSF. In this study, cassava starch using GSHE enzyme was comparedwith glucoamylase of commercial saccharification enzyme. Cassava starch processes for GSHE andglucoamylase treatments were performed at the same process conditions except for the saccharification step(60°C). For GSHE and glucoamylase treatments, ethanol concentrations at 72 hr of fermentation were 12.3,12.8% (v/v), respectively. Sugar profiles for the GSHE treatment were different from glucoamylase treatments,especially for reducing sugar. During SSF, the highest reducing sugar concentration for GSHE treatment was8% (w/v), whereas for glucoamylase treatments, reducing sugar concentrations had maximum of 15% (w/v).

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