Seminar Nasional Teknik Kimia Kejuangan
Not a member yet
523 research outputs found
Sort by
Aplikasi Kitosan Limbah Udang sebagai Pengawet Ikan Patin (Pangasius sp.)
Get PDFThe shelf life of fresh fish was relatively short. Damage the gills of fish such as color turned pale, texture is very soft, foul odor can be caused by bacteria. Coating method was using chitosan (CS) in an aerobic in order to preserve the fresh Pangasius sp. has been done in this study. Finding the best time preservation and influence of the degree of deacetylation of CS are purposes of this study. CS 1 and CS 2 were synthesized with difference of number of deacetylation. A number of CS was dissolved in acetic acid 1% to obtain 2.5% a solution of CS. The samples were soaked for 30 minutes in a solution of CS and then put in a plastic bag and stored for 12, 13, 14, 15, 16, and 17 hours. It were analyzed the amount of bacteria using the TPC method and organoleptic value. The results showed that the ability of antibacterial of CS 2 better than CS 1. The best time of preservation obtained at the 14th hour that was able to suppress the growth of bacteria while 7.103 col/g
Kata Pengantar
Get PDFSeminar Nasional Teknik Kimia “Kejuangan” yang diselenggarakan pada tanggal 17 Maret 2016 merupakan seminar ke-16 yang diselenggarakan oleh Program Studi Teknik Kimia, Fakultas Teknologi Industri, UPN “Veteran” Yogyakarta dengan tema “Pengembangan Teknologi Kimia untuk Pengolahan Sumber Daya Alam Indonesia”. Seminar ini merupakan agenda tetap tahunan secara nasional di bidang Teknik Kimia sebagai forum pertemuan ilmiah. Pada kesempatan ini, para akademisi, peneliti, industri dan pemerhati Teknik Kimia dapat saling menginformasikan hasil karya ilmiahnya, baik berupa kajian pustaka atau hasil penelitian fundamental dan aplikatif di berbagai bidang yang terkait dengan Pengembangan Sumber Daya Indonesia dan Energi, sehingga diharapkan dapat menjadi menjadi basis untuk menghasilkan produk yang dibutuhkan dan bermanfaat bagi masyarakat serta mampu bersaing di pasar dunia
Manajemen Perubahan dan Inovasi: Peran Teknologi dalam Pengembangan Sumber Daya Alam
No full textMakalah ini adalah hasil presentasi dari pembicara utama SNTKK 201
Model Predictive Control Based on System Re-Identification for Methanol and Dimethyl Ether Synthesis Control
Get PDFTo improve the performance of the model predictive control (MPC) was carried out by improving the model used. In this study the improvement was carried out by a closed loop system re-identification. In addition, the MPC tuning was carried also to obtain a more optimum control performance. The MPC based on a system re-identification (MPC-SRI) was used to control the synthesis of methanol and dimethyl ether, and compared with the PI controller. The results provide better performance than PI controller by decreasing the errors for each unit as follows: 29,62% (IAE) and 1,51% (ISE) for TC (temperature control) Heater 1; 51,69% (IAE) and 79,04% (ISE) for TC Heater 2; 67,44% (IAE) and 82,24% (ISE) for TC Cooler 1; 49,07% (IAE) and 67,26% (ISE) for TC Cooler 2; 56,75% (IAE) and 53,03% (ISE) for PC (pressure control) Compressor; 4,46% (IAE) and 50,00% (ISE) for CC (composition control) DME
Preliminary Study of Formic Acid Synthesis from Biomass
Get PDFHydrogen is considered as one of the energy sources can provide emission-free application. However, one of the difficulties of using hydrogen is the coherent characteristic of hydrogen, that obstruct the efficient and safe storage of the hydrogen. Therefore concepts for the liquid phase storage under ambient condition using formic acid have received many attention, so that formic acid synthesis methods that is economically feasible and enviromentally friendly is need to be known. One of them is oxidation sorbitol to form formic acids. This research will begin with synthesis of H5PV2Mo10O40 as catalyst. Preliminary experiments is done by varying reaction time (15,20, 25, 30, 60, 120, 180 minutes) to get the most favorable time. The main experiments will be done by varying pressure, temperature, and the catalyst’s in the exact reaction time. All of the oxidation reaction product then is analyzed using HPLC. The results show that the conversion of sorbitol is usually achieved at almost 100%, and the maximum yield that is achieved (75,40%) at 25 bar, 1400C, and 0,6% w/w. The effects of temperature to conversion of sorbitol and yield of formic acid is significant. The effect pressure to conversion and yield is significant at 1200C, but slightly unsignificant at the other variation. The effects of catalyst concentration is unsignificant to conversion of sorbitol, but is significant to the yield of formic aci
Evolutionary Perspective of Sulfur Dynamics in Tomohon and Implications on Microbial Corrosion
Get PDFSulfur (S) is a non-metal, multivalent, tasteless and odorless element. The vast amount of sulfur valence (from S2- to S6+)allows such element to participate in various geochemical and biochemical processes. In nature, sulfur is everywhere, abundant and distribute evenly on earth and the solar system. On ‘ancient’ earth in anoxic atmospheric condition, sulfur existed in the form of H2S. In oxic period, following the discovery of photosynthesis, sulfur was commonly found in the form of sulfur oxides (SOx). This paper discusses the evolutionary perspective of sulfur by presenting and discussing three following aspects: (i) The formation ofsulfur element through “nucleosynthesis” that generating 4 sulfur isotopes with various abundances (32S= 95.02%; 33S = 0.75%; 34S = 4.21%; 36S= 0.02%), (ii) Geological record of ∆33S and sulphate dynamics in the atmosphere since 2,500,000,000-290,000,000 years ago as volcanic gas; and, (iii) The transformation of various types of sulfur compounds in oxic condition nowadays as SO2 , SO3, H2SO4, sulfite salt, sulfate salt, and organic sulfur aerosols.Special attention is given to the sulfur cycle and changing dynamics in nature related to volcanism in geological context of North Sulawesi, especiallyTomohon areas, and practical implication of microbiological corrosion is considered as the implication of the sulphuric evolution that affect the life of modern society
Pengujian Aktivitas Antioksidan Menggunakan Metode DPPH pada Daun Tanjung (Mimusops elengi L)
Get PDFMimusops elengi L is one of the plantfrom India, Sri Lanka and Burma that have potential as antioxidant which can be used to treat various disease. The main content of the ethanol extract of the leaves Mimusops elengi L which have antioxidant activity are quercetin, hentriacontane, and β-carotenewhich is a source of natural antioxidants.Extraction using reflux method by varying the extraction time 15 minutes, 30 minutes, 45 minutes, 60 minutes and 75 minutes. The extract of leaves of M. elengi were prepared in methanol. The measurement of antioxidant activity carried out using DPPH method. The result showed that the extract ethanol at 45 minutes variaty of time extraction have the highest antioxidant activity, with IC50 value were 10,6
Characteristics Biomass for Raw Materials Pyrolysis Reactor
Get PDFFibers, shells, and empty bunch is a waste of processing from palm oil mill that is still rarely used. During this time, palm oil is widely used as a vegetable oil without trying to discover the potential of palm oil waste. The purpose of this research was to look for characteristics that are appropriate for biomass pyrolysis reactor. The initial activities is to collect samples of biomass (fiber, shells, and empty bunch), and then mashed biomass. Biomass was analyzed by proximate test and calorific value by standard ISO 2009. Proximate testing includes testing moisture content, ash content, volatile matter and fixed carbon. Result of the research showed empty bunch is better than fibers and shells to be a raw material of pyrolysis reactor with calorific value 4.250 cal/g, volatile matter is 69,19 %. And fixed carbon is 13,65 %
Rancang Bangun PLTMH Menggunakan Turbin Cross-Flow berkapasitas 1 Kw untuk Daerah Terpencil dengan Sumber Air yang Terbatas
Get PDFElectricity crisis that occurred encourages the implementation of renewable energy in a way to occupy the electricity supply needs. Implementation of the MHP(Micro Hydro Powerplant) is the best alternative to escape the electricity crisis. Given the potential of hydropower spread almost throughout Indonesia, the power is estimated at 75000 MW, 500 MW which is the potential for micro hydro power plant (MHP). Unfortunately, the potential of micro hydro is only 500 MW, is used only 4% of its course is 20 MW. Another problem is how to build a micro-hydro power plants in areas with limited water supply source. At this research project a micro hydro power plant has designed using cross-flow turbines that can be installed acording to the conditions above, as the efforts of using renewable energy to occupy the electricity supply needs. The design of the turbine is later evaluated to obtain optimal value of the calculation. Cross-flow turbines are designed at 13 m and the discharge head is 0.03 m3 / s. According to the design the maximum speed is 412.63 rpm, the maximum speed is expected to be produced not far adrift from the design. Maximum power turbine which is expected to reach the amount of 1 kW with an efficiency of 80%