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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 89 Documents
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Search results for , issue "2016: Prosiding SNTKK 2016" : 89 Documents clear
Daftar Isi Prosiding Editor Prosiding SNTKK
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Daftar Isi Prosiding
Pengaruh Penambahan Filler dan Suhu Pengeringan terhadap Kandungan Antioksidan pada Daun Physalis angulata yang Diperoleh dengan Ekstraksi Menggunakan Air Subkritik Ratna Frida Susanti; Dessy Natalia
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Physalis angulata or ceplukan is a wild plant, typically grows in rice field, forest or yard. Before the planting season, farmers typically exterminate those plants. However, it was well known in folk medicine having bioactive compounds which can cure several diseases such as asthma, hypertension, boil etc. In this research, Physalis angulata extract can be obtained by extraction using subcritical water. Subcritical water was chosen as a solvent because it is nontoxic; abundant with adjustable polarity so can replace the toxic organic solvents such as methanol, ethanol, acetone etc.The objective of this research is to study the effect of filler type and concentration along with drying temperature to the total phenol, flavonoid and IC50 in Physalis angulata leaves extract. Filler was added to absorb water and make the powder form of extract. Two kinds of fillers were used, aerosil and microcrystalline cellulose (MCC). The concentration of filler was varied from 0-30 wt% for MCC and 0-15 wt% for aerosil. The oven drying temperature was varied from 40-60 oC. The results show that an addition of filler improved the total phenol, flavonoid and antioxidant activity.The higher the concentration of filler, the better the total phenol, flavanoid and antioxidant activity.In the presence of filler, the total phenol improved by 5.5  folds for addition of 30 wt% MCC and 3.3 folds for 15 wt% aerosil at drying temperature of 60oC. Total flavonoid improved by 7.6 folds for addition of 30 wt% MCC and 7.3 folds for 15 wt% aerosil above the same drying temperature. The higherdrying temperature leaded to shorter drying time which can protect antioxidant from deterioration.
Adsorpsi Ion Logam Tembaga Menggunakan Karbon Aktif dari Bahan Baku Kulit Salak Febe Apecsiana; Hans Kristianto; Arenst Andreas
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Heavy metals contained inside water may carry negative impacts to humans and environment. The most effective treatment is adsorption using activated carbon which is obtained through chemical activation of snake fruit peel using KOH compound. The ratio of snake fruit peel to KOH (20%-w solution) used was 1:4. Snake fruit peel activated carbon with surface area of 2526  m2/g were obtained. The content of heavy metal ions (Cu2+) in the water were analyzed using spectrophotometer UV-Vis with NH3(p.a) solution which form a complex bound colored dark blue. Investigation was carried out by studying the influence of initial concentration (100, 150, 200, 250, and 300 ppm), pH (2,5; 3,5; 5), the amount of adsorbent (30, 60, 90 mg), dan temperature (25oC, 35 oC, dan 45 oC ) to obtain optimum condition with the highest %removal at initial concentration 100 ppm, pH 5, 90 mg adsorbent, and there's no significant differences by varying temperature. Adsorption isotherm studies indicated that Langmuir model fit better with maximum adsorption capacity of 687 mg/g and Langmuir constant for the variation of initial concentration and the amount of adsorbent were 0.0473 L/mg and 0.0296 L/mg, respectively. The kinetics of adsorption of Cu(II) followed pseudo second order.
Fotoreduksi Logam Krom (VI) Menggunakan Fotokatalis Lapis Tipis TiO2-Mn Mesopori dengan Bantuan Lampu Tungsten Kapti Riyani; Tien Setyaningtyas; Agus Soleh
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Hexavalent chromium is a heavy metal that is toxic and give bad impact to human living. Maximum consentration of hexavalent chromium of solution that can be accepted is 0,05 ppm. This research was conducted to reduce hexavalent chromium by photoreduction method using mesophorous TiO2-Mn thin film photocatalyst with a tungsten lamp. Tha aim of this research is to obtain optimum ratio of TiO2-Mn (100:0; 99:1; 98:2; 97:3; and 96:4) to reduce hexavalent chromium. A thin film was synthesized by photodeposition method with calcination temperature 4000C for 6 hours. TiO2-Mn was crushed and made into coloidal phase with PEG 1000, then coated on a glass plat (9X4 cm). Thin film was tested to reduce hexavalent chromium with tungsten lamp and its concentration was measured by UV-Visible Spectrophotometer at wave length of 541 nm. The result showed that 99:1 is an optimum ratio of TiO2-Mn and it reduce hexavalent chromium up to 52,3 %. The decrease of hexavalent chromium concentration caused by the photoreduction process in mesophorous TiO2-Mn
Pengolahan Sampah Plastik dengan Metoda Pirolisis menjadi Bahan Bakar Minyak Endang K; Mukhtar G; Abed Nego; F.X. Angga Sugiyana
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Proses pirolisis sampah plastik merupakan proses dekomposisi senyawa organik yang terdapat dalam plastik melalui proses pemanasan dengan sedikit atau tanpa melibatkan oksigen. Pada proses pirolisis senyawa hidrokarbon rantai panjang yang terdapat pada plastik diharapkan dapat diubah menjadi senyawa hidrokarbon yang lebih pendek dan dapat dijadikan sebagai bahan bakar alternatif. Penelitian ini bertujuan untuk mengetahui pengaruh suhu terhadap perolehan minyak hasil pirolisis, mengetahui pengaruh suhu dan jenis plastik terhadap sifat fisik dan sifat kimia dari minyak hasil pirolisis. Pirolisis sampah plastik ini dilakukan dengan umpan yaitu sampah plastik jenis PolyPropylene dan sampah plastik jenis Low Density PolyEthylene. Proses pirolisis dijalankan dalam reaktor semi batch dimana umpan sebanyak 500 gram dimasukan sekaligus dalam reaktor dan produk akan dihasilkan secara terus menerus. Proses pirolisis dilaksanakan selama 60 menit dengan variasi suhu 250oC, 300oC, 350oC serta 400oC. Untuk memaksimalkan hasil pirolisis maka proses pirolisis dilakukan pada kondisi vakum. Selain itu di dalam reaktor diisi oleh pasir silika sebagai penahan panas serta zeolit sebagai katalis proses cracking hidrokarbon. Minyak hasil pirolisis terbanyak dari sampah plastik PolyPropylene diperoleh pada suhu operasi 400oC sebanyak 27,05% sedangkan minyak hasil pirolisis terbanyak dari sampah plastik Low Density PolyEthylene diperoleh pada suhu operasi 300oC sebanyak 37,43%. Viskositas minyak hasil pirolisis mendekati nilai viskositas dari bensin. Densitas minyak hasil pirolisis mendekati nilai densitas dari solar dan minyak tanah. Nilai kalor minyak hasil pirolisis mendekati nilai kalor dari solar dan minyak tanah.
Evaluasi Waktu Start Up pada Proses Peruraian Limbah Stillage secara Anaerobik Menggunakan Reaktor Fluidized Bed Kontinyu dengan Zeolit sebagai Media Imobilisasi Kunthi Widhyasih; Wiratni Budhijanto; Chandra W Purnomo
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Stillage is wastewater from the ethanol industry. Organic matter content in the stillage is quite high, so it can damage to the environment if disposed of directly into the environment. Stillage has great potential to produce biogas that can be converted into energy by anaerobic treatment process. One of the anaeobic digestion methods is the bacterial cell immobilization technique. One of the  reactor types using cell immobilization technique is Anaerobic Fluidizied Bed Reactor (AFBR). This study uses a set of AFBR reactor containing zeolite media with particle diameters of 0.5 - 0.8 mm and operated at a fluidization level (FL) 20% - 40% of the total effective volume of the reactor. This work studied the effect initial organic concentrations and time dring start up process on decomposition of stillage using AFBR. Scope of this work was evaluating AFBR performance  by comparing the matematical model simulation result with experimental data. The simulation results were used as standard, that described AFBR performance under ideal conditions. This esperiment was conducted for 57 days in two cycles with varied sCOD concentrations and was done in batch recirculation process. The experiment showed that initial organic concentration was affected start up process.  On high organic concentration, start up process failed, but the maximum concentrations limits have not  been determined yet. Experiment showed that charging  50.000 mg sCOD/L to the reactor have made the system failed due the organic shock loading and inhibiton by VFA. Optimum time of start up was determined in first cycle, with initial organic concentration 10.000 mg sCOD/L. Optimum time of start up is 7 until 10 days. If start up process was longer than 10 days, bacteria entered the decay phase due insufficiency of substrat. AFBR performance evaluation using mathematical approaches produced more objective and more accurate result, although there were several factor not evaluated in the mathematical model such as the inhibition effect. These results could be used as a reference for reactor performance optimization especially in addressing the problem of inhibition
Membran Polimer Elektrolit Nanokomposit Berbasis PVdF-HFP (Poly Vinylidene Flouride co-Hexaflouropropylene) sebagai Separator Baterai Lithium Ion dengan Variasi Non Solvent Alviansyah Z.A. Putro; Nugroho F. Windyanto; Endah R. Dyartanti
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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 Rechargeable batteries consist of electrode, separator, and electrolyte. Separator used as medium transfer ions and to prevent electrical short circuits in battery cells. Commonly used a solid separator (polyethylene, celgard) and a liquid electrolytes. Recently poly(vinylidene fluoride) (PVdF) were developed into a based gel polymer electrolytes and as separator at once. The advantage of PVdF has a high porosity and more stable against hard chemical also high temperature. The aim of this research to investigate the effect of non-solvent to characteristic membranes. In order to produce better outcome add 7% polyvinylpyrrolidone (PVP) as a pore forming agent and 10% nonoclay as filler. Phase-inversion is a common methode to form a microporous membranes. This methode was prepared by dissolving Nanoclay and PVP in solvent for 2 hours, and then add the PVdF/PVdF-HFP with stirring at 60°C. After 4 hours, casting in a glass and immersed in non-solvent. N,N-Dimethylformamide (DMF) is used as solvent, while for non-solvent are variated: aquadest, N-Methyl Pyrollidone (NMP) 10%, Natrium Clorida (NaCl) 10%. The membranes were characterized by porosity test, electrolytes uptake test, and Fourier Transform Infrared (FTIR). The best result using aquadest as non-solvent provide 60% electrolyte uptake, and with non-solvent NaCl give porosity 80%
Kajian Pengaruh Pelumatan dan Penambahan Aktivator terhadap Produksi Biogas dari Sampah Sisa Makanan Restoran Yuli Pratiwi; Angge Dhevi Warisaura
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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This research to determine the effect of grinding and addition of activator on biogas production from restaurant foodwaste. Variations that were used in this study is grinded and not grinded. The second variations is by adding Green Phoskko® 0%, 0,1%, 0,25%, and 0,5%. Each variation is load 7 liters substrate. The study was conducted for 30 days. Parameters observed during the study are Chemical Oxygen Demand, pH, temperature, moisture content, Total Solid,Volatile Solid and volume of biogas in manometer. At the end of the study, biogas tested by Gas Chromatography to determine methane gas. The best reactor conditions on producing biogas is substrate with grinded materials and 0,25% of activator added. Materials that grinded has plenty volume of biogas and a fairly methane content.  It was showed in the highest cumulative volume of biogas produced by the reactor B1 with a volume of 202.41 mL, methane content 42 μL / 1mL and B3 with a volume of 171.666 mL, methane content 1,12 μL / 1mL. Grinded material and addition of activator has effect but not significant on the biogas production. This occurs because of an imbalance of anaerobic processes caused by the rate of pH decrease. Using of Green Phoskko® as an activator is not enough to provide optimal results.
Pemanfaatan Umbi Suweg (Amorphophallus sp) sebagai Bahan Baku Pembuatan Bioetanol melalui Proses Fermentasi dan Distilasi Hargono H.; Adimas Wahyu Santoso; Gleys Kasih Deborah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Suweg (Amorphophallus sp) is a plant that is easy to grow. Bulbs of this type is rarely used as food because the tuber contains compounds that cause itching. The carbohydrate content in tubers of 17.5%, so the bulbs suweg worthy of ethanol (bioethanol). The process used to convert starch into bioethanol suweg through enzymatic hydrolysis stages continued fermentation. The process of enzymatic hydrolysis using the enzyme α-amylase and gluco-amylase, while the fermentation process using the yeast Saccharomyces cerevisiae. As the growth of bacteria use nutrients NPK and urea. Substrate concentration of 20% (w / w), α-amylase enzyme dose and gluco-amylase : 1.0, 1.5 and 2% (w / w), respectively. The next best glucose results generated from the hydrolysis process is fermented using yeast mass of 20 g / L with a variety of nutrient mass of a mass of urea and NPK 3, 5, 7, and 11 g / L, .respectively.  Bioethanol fermentation results in the form of crude subsequently purified by distillation. Hydrolysis using each dosage α-amylase and gluco-amylase as much as 1.5% yield of glucose 11.9 g / L. In the fermentation process, the addition of nutrient effect on ethanol. The highest ethanol content of fermented mass produced by the addition of NPK nutrients in variable 5 g / L that is equal to 8.5%. Separation by distillation of the stage to produce ethanol 65%.

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