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PEMODELAN DAN SIMULASI DISTILASI BATCH BROTH FERMENTASI PADA TRAY COLUMN DENGAN SERABUT WOOL Permatasari, Ratih; Atlway, Ali; Susianto, Susianto
Jurnal Teknik Kimia Vol 9, No 2 (2015): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v9i2.544

Abstract

Ketersediaan energi sangat penting peranannya bagi kelanjutan kehidupan suatu negara. Pemanfatan energi terbarukan masih relatif kecil. Beberapa hal yang menghambat pengembangan energi terbarukan. Dan salah satu energi terbarukan adalah bahan bakar nabati. Bahan bakar nabati seperti bioetanol merupakan hasil fermentasi. Untuk memperoleh bioetanol dari fermentasi biasanya menggunakan distilasi batch multikomponen. Distilasi batch multikomponen adalah proses pemisahan zat tertentu berdasarkan titik didihnya. Untuk menunjang hal tersebut, maka dilakukan penelitian permodelan distilasi batch multikomponen ethanol dari broth fermentasi. Kemudian validasi dari model matematika yang dibuat dengan hasil penelitian distilasi yang telah dilakukan. Penyelesaian numerik digunakan adalah ODE 45 pada MATLAB yang menggunakan metode Runge-Kutta.Dengan variasi penggunaan reflux ratio, dapat mempengaruhi konsentrasi pada distillat setiap waktu. Sehingga, dapat diketahui waktu yang optimal untuk memperoleh etanol dengan kadar yang diinginkan dalam distilasi batch multikomponen. Hasil sementara antara simulasi dan eksperiment mempunyai kesalahan sebesar 10%. Dari hasil distilat etanol,amly alkohol dan aseton dengan waktu 10,20,30,40,50 dan 60 menit sebesar (90%,89%,88%,86%,84% dan 80% untuk hasil distilat etanol), (0,001, 0,0012, 0,0014, 0,0015, 0,0010 dan 0,0005 untuk hasil amly alkohol) dan (0,001, 0,0007, 0,0005, 0,00051, 0,00051 dan 0,00051 untuk hasil aseton).
STUDI EKSPERIMENTAL FALLING FILM EVAPORATOR PADA EVAPORASI NIRA KENTAL Altway, Ali; Fitri, Medya Ayunda; Susianto, Susianto; Suhadi, Suhadi
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.175 KB) | DOI: 10.5281/zenodo.2582030

Abstract

Falling film evaporator is a constructed equipment for concentrating dilute solution that are sensitive to heat flowing form a thin film. This research aims to study the evaporation of cane juice concentrated with air flow on falling film evaporator and knowing evaporation rate occured in falling film evaporator used. In the process, cane juice from plant pumped to the falling film evaporator that used in this experiment. This research used concentrated cane juice and air flow rate for variables of this experiment. Cane juice flow from top of evaporator through distributor to form thin film and air flow from the bottom of evaporator. After that, temperatur of pipe wall, inlet and outlet temperature of cane juice and air were measured. This experiment concluded that the highest concentration of outlet solution is 59 brix for liquid flow rate 154 l/h and air flow rate 10 m3/h, and the other hand inlet solution concentration 51 brix. Optimum evaporation rate is 35 kg/m2.h for 51 brix and air flow rate 10 m3/h.
PENGARUH KONSENTRASI SURFAKTAN DAN KECEPATAN PUTAR PENGADUK TERHADAP PROSES PEMISAHAN BITUMEN DARI ASBUTON Altway, Ali; Susianto, Susianto; Novitrie, Nora Amelia
Journal of Research and Technology Vol 2, No 2 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (65.758 KB) | DOI: 10.5281/zenodo.2581969

Abstract

Asbuton is a rock that contain the bitumen. Asbuton can be used as road construction alternatives after extracting bitumen from the mineral. A method for separating bitumen is separation process using hot water medium. The process was carried out in a stirred tank, 200 grams of asbuton was mixed with diesel oil and added by hot chemical solution (surfactant) in the digestion tank. The Separation process in the extractor was made at then the speed of stirrer were set according to the variable and time was set 30 minutes. After the complete process, the mixture was moved into a beaker glass and 500 ml hot water was added. The mixture of diesel oil and bitumen will float in the surface then the density will be measured to determine the bitumen concentration. It can be concluded that concentration of surfactant solution and speed of stirrer gave the significant results. The highest recovery percentage of bitumen is 81,99 %. Keywords: asbuton, hot water, surfactant, speed of stirrer
EFEK FORTIFIKASI VITAMIN B12 TERHADAP KADAR VITAMIN B12 SERUM DAN HOMOSISTEIN SERUM PADA VEGETARIAN Susianto, Susianto
Jurnal Ilmu Kesehatan Bhakti Husada: Health Sciences Journal Vol 11 No 1 (2020): Jurnal Ilmu Kesehatan Bhakti Husada: Health Science Journal
Publisher : Lembaga Penelitian Sekolah Tinggi Ilmu Kesehatan Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.77 KB) | DOI: 10.34305/jikbh.v11i1.150

Abstract

Introduction: Vegetarians consume plant-based foods with or without eggs and milk. Vegetarians are at risk of vitamin B12 deficiency, as natural sources of vitamin B12 are limited to animal-based foods. Vitamin B12 deficiency can lead to megaloblastic anemia, nerve damage and increase homocysteine level. Higher homocysteine level can increase the risk of coronary heart disease and stroke. The objective of this study was to investigate the effect of vitamin B12 fortification on the level of serum vitamin B12 and homocysteine in vegetarian. Method: The research design was an experimental study, community trial. The samples were 42 vegetarians with vitamin B12 deficiency (< 156 pmol/L) selected from 118 vegetarians as members of Indonesia Vegetarian Society (IVS) Pekanbaru, treated by vitamin B12 fortified oatmeal for three months from March to June 2010.  Serum vitamin B12 and homocysteine were measured by electrochemiluminescent immunoassay and microparticle enzyme immunoassay method respectively. Result: Prevalence of vitamin B12 deficiency in vegetarian was 35.6%. Statistical analysis showed a significant increase of serum vitamin B12 from 124.6 to 284.6 pmol/L (p=0.001) and significant decrease of serum homocysteine from 20.1 to 15.1 ┬Ámol/L (p=0.001). Conclusion: Consumption of vitamin B12 fortified oatmeal increases the level of serum vitamin B12 and decreases the level of serum homocysteine significantly in vegetarian with vitamin B12 deficiency.
Effect of Particle Size Distribution on Ammonium Sulphate Dried in a Rotary Dryer Susianto, Susianto; Altway, Ali; Kuswandi, Kuswandi; Margono, Margono
IPTEK The Journal for Technology and Science Vol 21, No 3 (2010)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v21i3.37

Abstract

The aim of this work is to study theoretically, by mathematical model development, the effect of particle size distribution on the performance of rotary dryer to dry ammonium sulphate fertilizer assuming plug flow with axial dispersion pattern (PFDA model) for solid particle flow. The mathematical model development was carried out by combining the drying processes model with particle size distribution model. Particle size distribution models used are Rosin-Rommler model and Gamma distribution model. For simplicity, the model of drying processes of solid particles in the rotary dryer was developed by assuming of uniform air conditions (temperature and humidity) along the rotary dryer as in the entry conditions. The resulting differential equations were solved analytically under Matlab 6.1 facility.Since this model, solid hold up, and axial dispersion number were obtained from empirical correlations in the literatures. The drying rate of ammonium sulphate fertilizer in rotary dryer was estimated using isothermal diffusion model with effective diffusivity of moisture in the particle obtained from previous study [2]. Using Gamma function distribution, this research showed that for the value of the coefficient of variance (CV) less than 0.5, particle size distribution does not have significant effect on dryer performance. For the value of CV greater than 0.5, the dryer performance increase (or outlet solid moisture content decrease) with increasing the value of CV. The application of Rosin-Rammler model gives lower prediction of outlet solid moisture content compared to the application of Gamma function model.