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All Journal Jurnal Penelitian Pertanian Terapan JURNAL SELULOSA Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Jurnal Riset Teknologi Industri Dinamika Kerajinan dan Batik : MAJALAH ILMIAH Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Tri Hadi Jatmiko
Pusat Riset Teknologi Dan Proses Pangan, Badan Riset Dan Inovasi Nasional
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Karakteristik Pengeringan Rumput Laut Ulva sp. dan Sargassum sp. Dwi Joko Prasetyo; Tri Hadi Jatmiko; Crescentiana Dewi Poeloengasih
Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 13, No 1 (2018): Juni 2018
Publisher : Balai Besar Riset Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jpbkp.v13i1.515

Abstract

AbstrakDalam penelitian ini karakteristik pengeringan dari rumput laut Ulva sp. dan Sargassum sp. telah dipelajari. Proses pengeringan dilakukan pada kondisi variasi suhu 40, 50, dan 60 °C di dalam alat pengering laboratorium. Laju pengeringan dievaluasi dengan empat model pengeringan lapis tipis, yakni Newton, Page, Two-Term, dan Midilli. Model yang paling sesuai ditentukan dari nilai sum square error (SSE) dan root mean square error (RMSE) terendah, serta nilai r tertinggi. Laju pengeringan kedua rumput laut memperlihatkan adanya periode laju pengeringan menurun dan tidak ada periode laju pengeringan konstan pada pengeringan Ulva sp. dan Sargassum sp. Hasil menunjukkan bahwa laju pengeringan meningkat seiring peningkatan kadar air dan suhu, dan laju pengeringan menurun seiring dengan berjalannya waktu. Laju pengeringan tertinggi diperoleh pada suhu 60 °C untuk Ulva sp. dan Sargassum sp. Hasil evaluasi menunjukkan bahwa model Midilli memiliki nilai SSE dan RMSE terendah, serta nilai r tertinggi. Berdasarkan hasil tersebut model Midilli merupakan model yang paling sesuai untuk menggambarkan laju pengeringan Ulva sp. dan Sargassum sp. Drying Characteristics of Ulva sp. and  Sargassum sp. SeaweedsAbstractIn this project drying characteristic of Ulva sp. and Sargassum sp. were studied. Drying process was conducted using laboratory scale dryer at various temperatures (40, 50, and 60 °C). Four different thin layer drying models, i.e., Newton, Page, Two-term and Midilli were used to evaluate the drying kinetics. The most appropriate model was determined based on the lowest value of sum square error (SSE) and root mean square error (RMSE), and the highest value of r. There was only decrease period and no constant drying period in drying rate of  Ulva sp. and Sargassum sp. The results showed that drying rate increased as moisture content and temperature increased, while drying rate decreased as drying time increased. The highest drying rate was obtained at 60 °C for  Ulva sp. and  Sargassum sp. The evaluation reveals that Midilli model has the lowest value of SSE and RMSE and the highest value of r at all condition. Based on the results, it was found that Midilli model was the appropriate model to describe the drying rate of  Ulva sp. And Sargassum sp.
Prediksi Adsorpsi Zat Warna Metilene Biru Pada Karbon Aktif Menggunakan Machine Learning Tri Hadi Jatmiko
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol 39, No 1 (2022): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v39i1.6936

Abstract

Pemanfaatan teknologi informasi dalam membantu mengurangi kegiatan eksperimen di laboratorium semakin meningkat. Pemanfaatan teknologi informasi akan menghemat bahan, waktu dan biaya, serta tentunya akan mengurangi resiko bahaya yang kemungkinan timbul jika dilakukan percobaan secara langsung di laboratorium. Salah satu teknologi informasi yang sedang berkembang dan menarik untuk digunakan adalah machine learning. Penelitian ini bertujuan untuk mengetahui unjuk kerja model machine learning dalam memprediksi adsorpsi metilene biru pada karbon aktif. Dataset adsorpsi metilene biru menggunakan karbon aktif biji alpukat dari penelitian terdahulu yang dilakukan oleh Regti dkk (2017) dibagi menjadi data latihan dan data tes. Dengan data tersebut kemudian digunakan untuk menguji performa model machine learning (neural networks, support vector machines, random forest, dan linear regression) menggunakan metode Stratified 10-fold Cross validation. Model neural network merupakan model machine learning terbaik untuk memprediksi proses adsorpsi metilene biru pada karbon aktif dibandingkan dengan model SVM, Random Forest maupun regresi linier dengan performa prediksi terbaik pada data latihan maupun data uji. Nilai MSE 14.640, RMSE 3.826, MAE 3.178 dan R2 0.975 pada data latihan dan pada data uji nilai MSE 3.51e-06, RMSE 0.00187, MAE 0.00135 dan R2 0.999.
Utilization of Peroxide Bleached Sugar Palm (Arenga pinnata) Fibre Waste into Cellulose Nano Crystal Dwi Joko Prasetyo; Nur Evita Fitriana; Wahyu Anggo Rizal; Hernawan; Tri Hadi Jatmiko; Diah Pratiwi; Anggita Sari Praharasti; Roni Maryana; Muslih Anwar; Ria Suryani; Andri Suwanto; Satriyo Krido Wahono; Crescentiana Dewi Poeloengasih
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 13 No. 1 (2022)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2022.v13.no1.p35-42

Abstract

Sugar palm (Arenga pinnata) fibre (SPF) waste is a side product of sugar palm starch production and needs to be processed to avoid environmental pollution. Since the SPF has high cellulose content, it can be beneficial if it is valorized into high-value products such as cellulose nanocrystal (CNC). The CNC production from SPF was initiated by cellulose production by using an environmentally friendly peroxide bleaching as elementary chlorine free bleaching method. The CNC production was conducted via sulfuric acid hydrolysis at a temperature of 40°C, solid/liquid ratio of 1:10, and hydrolysis time of 45, 60, 75, and 90 minutes. The same functional groups were observed in all CNC samples, including the appearance of the ester sulfate group. The decrease in yield and crystallinity index (CrI) as the hydrolysis time was observed. These phenomena were caused by the degradation of the crystalline structure of cellulose and the formation of the ester sulfate group. The measurement of CNC diameter size was carried out by using the scanning electron microscopy (SEM) technique. The CNC diameter was below 100 nm which indicated the nanoparticle formation was observed at CNC produced at hydrolysis times of 75 and 90 minutes. In conclusion, CNC production was successfully produced from peroxide bleached SPF which is more environmentally friendly than the conventional method using chlorite bleached cellulose. Furthermore, it is needed to optimize the production of SPF CNC in further research.
Analisis Kinerja Reaktor Unggun Tetap untuk Produksi Hidrogen Melalui Reaksi Steam Reforming Etanol Tri Hadi Jatmiko; Dwi Joko Prasetyo; Nurul Abdillah Pulungan
Jurnal Riset Teknologi Industri Vol. 12 No.1 Juni 2018
Publisher : Balai Riset dan Standardisasi Industri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (875.965 KB) | DOI: 10.26578/jrti.v12i1.3622

Abstract

Reaktor unggun tetap merupakan jenis reaktor yang banyak digunakan untuk reaksi yang menggunakan katalis padat, salah satunya adalah reaksi steam reforming. Reaksi steam reforming merupakan salah satu proses pembuatan gas hidrogen dari bahan yang mengandung karbon seperti biomassa dan etanol dengan menggunakan katalis yang selanjutnya bisa digunakan sebagai sumber energi alternatif yang ramah terhadap lingkungan  maupun sebagai bahan baku kimia. Dalam penelitian ini dilakukan pemodelan dan simulasi reaktor unggun tetap untuk menganalisa kinerja dari reaktor unggun tetap untuk produksi hydrogen dari etanol melalui reaksi steam reforming. Model yang digunakan adalah model pseudohomogen dua dimensi dengan model dispersi, kondisi operasi steady state, adiabatis dan fasa gas mengikuti hukum gas ideal. Dari hasil simulasi didapatkan informasi bahwa kenaikan temperatur dari 593 K hingga 743 K meningkatkan konversi reaksi dari 36,64% menjadi 40,42%. Kenaikan kecepatan superfisal dari 0,63x10-5 hingga 4,23x10-5 m/s menghasilkan konversi reaksi turun dari 82,69% menjadi 27,81%. Perubahan kosentrasi etanol yang dimaskan ke reaktor dari 5,71x10-5 mol/m3 hingga 1,49x10-4 mol/m3 meningkatkan konversi reaksi dari 65,84% hingga 99,41%. Dan kenaikan rasio H2O/C2H5OH dari 3,0 hingga 11,0 meningkatkan konversi reaksi dari 56,74% menjadi 99,20%. Model reaktor unggun tetap untuk reaksi steam reforming etanol dapat digunakan untuk memprediksi kinerja reaktor dengan baik.Kata Kunci: Steam reforming, etanol, hidrogen, reaktor unggun tetap                                                                       ABSTRACTThe fixed bed reactor is a type of reactor widely used for reactions using solid catalysts, one of which is a steam reforming reaction. Steam reforming reaction is a process of producing hydrogen from carbon-containing materials such as biomass and ethanol, by using a catalyst which can later be used as an alternative energy source that is environmental friendly. In this study, carried out the construction of a mathematical model and simulation of fixed bed reactor for performance analysis of fixed bed reactor for hydrogen production through ethanol steam reforming. The model used is pseudohomogeneous two-dimensional dispersion model, with steady state operating conditions, adiabatic and the gas phase following the ideal gas law. Result from simulation show that rising temperatures from 593 to 743 K increased the conversion reaction from 36,64% to 40,42%. The increase in superficial velocity 0,63x10-5 to 4,23x10-5 m/s decreased conversion reaction from 82,69 to 27,81%. Changes in the concentration of 5,713x10-5 to 1,4913x10-4 mol/m3 increased the conversion reaction from 65,84 to 99,41%. And increasing ratio of H2O / C2H5OH from 3.0 to 11.0 increase conversion reaction of 56,74% into 99,20%. Model fixed bed reactor for ethanol steam reforming can be used to predict the performance of the reactor well.
Efektivitas Pemurnian Asap Cair Biomassa Serbuk Gergaji dengan Distilasi, Adsorpsi Zeolite dan Karbon Aktif Wahyu Anggo Rizal; Ria Suryani; Muslih Anwar; Dwi Joko Prasetyo; Satriyo Krido Wahono; Wuri Apriyana; Tri Hadi Jatmiko; Andri Suwanto; Roni Maryana; Hernawan Hernawan; Sugeng Hariyadi
JURNAL SELULOSA Vol 12, No 01 (2022): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25269/jsel.v12i01.353

Abstract

Effectiveness of Liquid Smoke Purification of Sawdust by using Distillation Method, Zeolite and Active Carbon AdsorptionAbstractLiquid smoke is a product resulting from the pyrolysis of biomass under conditions of minimal oxygen. The compounds of liquid smoke is influenced by the type of biomass, water content, process temperature and the length of pyrolysis time. In general, liquid smoke is dark brown in color with an acidic and has a unique aroma and taste, depending on the type of biomass. Liquid smoke chemical compounds characterize organoleptic, antimicrobial and antioxidant, in addition to functional compounds sometimes also produce harmful compounds such as a group of polycyclic aromatic hydrocarbon compounds, and 2-propanone, 2-butanone, cyclopentanone which are toxic or carcinogenic. Crude liquid smoke may contain several mixtures of hazardous compounds depending on the process conditions, so it cannot be directly applied to food products. To get quality liquid smoke, it is necessary to carry out a purification process to reduce or eliminate harmful compounds. Methods that have been widely applied include distillation and adsorption processes. This study aims to measure the effectiveness of zeolite and activated carbon in the purification of liquid smoke with mixed sawdust biomass as raw material. Liquid smoke is purified by distillation, and adsorption with several adsorbents. The results obtained indicate that the liquid smoke still contains 2-propanone ,2-butanone and cyclopentanone. Zeolite ZG2 showed the best effectiveness in removing the three harmful compounds, while ZK1and Cca still left 2-propanone in liquid smoke. Thus zeolite ZG2 is effective as an absorbent in the purification of liquid smokeKeywords: Liquid Smoke, Adsorption, Biomass, Sawdust Abstrak Asap cair adalah produk yang dihasilkan dari pirolisis biomassa pada kondisi minim oksigen. Komposisi senyawa asap cair dipengaruhi oleh jenis biomassa, kadar air, dan suhu proses serta lama waktu pirolisis. Pada umumnya asap cair berwarna cokelat tua dengan pH asam dan memiliki aroma serta rasa yang unik, tergantung dari jenis biomassanya. Senyawa kimia asap cair mencirikan sifat organoleptik, antimikroba dan antioksidan, selain senyawa fungsional terkadang juga menghasilkan senyawa berbahaya seperti kelompok senyawa Polycyclic aromatic hydrocarbon, dan 2-propanone, 2-butanone, cyclopentanone yang bersifat toksik atau karsinogenik. Asap cair crude dimungkinkan terdapat beberapa campuran senyawa berbahaya tergantung dari kondisi prosesnya, sehingga tidak dapat secara langsung diaplikasikan untuk produk pangan. Untuk mendapatkan asap cair berkualita perlu dilakukan proses pemurnian untuk mengurangi atau menghilangkan senyawa berbahayanya. Metode yang telah banyak diaplikasikan antara lain dengan proses distilasi dan adsorpsi. Penelitian ini bertujuan mengukur efektifitas zeolite dan karbon aktif dalam pemurnian asap cair dengan bahan baku biomasa serbuk gergaji campuran. Asap cair di lakukan pemurnian dengan destilasi, dan adsorpsi dengan beberapa adsorben. Hasil yang diperoleh menunjukkan bahwa asap cair masih mengandung 2-propanone ,2-butanone dan cyclopentanone. ZG2 menunjukkan efektifitas yang paling baik mampu menghilangkan ketiga senyawa berbahaya tersebut sedangkan ZK1 dan Cca masih menyisakan 2-propanone dalam asap cair. Dengan demikian zeolite ZG2 efektif sebagai absorben dalam pemurnian asap cair Kata kunci : Asap  Cair, Adsorpsi, biomassa, serbuk gergaji kayu
PEMBUATAN PUPUK PADAT DARI HASIL SAMPING BIOGAS DI GUNUNGKIDUL Anggita Sari Praharasti; Andi Febrisiantosa; Tri Hadi Jatmiko; Satriyo Krido Wahono; Dwi Joko Prasetyo; Diah Pratiwi; Ria Suryani; Wahyu Anggo Rizal; Nana Hidayat; Andri Suwanto
Jurnal Penelitian Pertanian Terapan Vol 23 No 2 (2023)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v23i2.2291

Abstract

Utilization of biogas by-products is expected to increase the beneficial aspects of the existence of a biogas reactor as a source of input for small-scale agriculture, despite the main function as a renewable energy supply. In this study, formulation of solid fertilizer from biogas solid waste and evaluation of formulation yields have been done. Solid (sludge) waste from the biogas reactor were separated and mixed with another biomass for further processing into fertilizer or nutrients for plants. Two formulations have been made (3 kg each) with treatments of one week fermentation with once back stirring (P1) and two weeks fermentation with twice back stirring (P2) aimed to identify the difference between the two samples based on the quality of solid fertilizers produced. The evaluation tests were pH, water content, C-organic, C/N ratio, by-products substance, NPK total, Fe total, and Zn total. The data were analyzed statistically using independent t-test Parametric Statistic for normally distributed and/or homogeny data and also Mann Whitney Non-Parametric Statistic for the opposite. The test results of the fertilizer formula showed a pH value of around 6-7 with water content value of 52-67%. C-Organic value resulted was 25.89±3.10 (P1) and 21.35±1.99 (P2). The resulting C/N ratio was 25,89±3.10 (P1) and 21.35±1.99 (P2). By-products substances, NPK total, Fe total, and Zn total parameter were in accordance with the quality standard of solid fertilizer. Further development efforts are needed to adjust the moisture content of the developed formulation. Moisture content was estimated to affect shelf life, in relation to the number of live microbes as a quality control.
Co-Authors Andi Febrisiantosa Andri Suwanto Andri Suwanto Anggita Sari Praharasti Anggita Sari Praharasti Crescentiana Dewi Poeloengasih Crescentiana Dewi Poeloengasih Diah Pratiwi Diah Pratiwi Dwi Joko Prasetyo Dwi Joko Prasetyo Dwi Joko Prasetyo Dwi Joko Prasetyo Hernawan Hernawan Hernawan Muslih Anwar Muslih Anwar Nana Hidayat Nur Evita Fitriana Nurul Abdillah Pulungan Ria Suryani Ria Suryani Roni Maryana Roni Maryana Satriyo Krido Wahono Satriyo Krido Wahono Sugeng Hariyadi Wahyu Anggo Rizal Wahyu Anggo Rizal Wuri Apriyana