Article Per Year (5 Year)
p-Index From 2021 - 2026
2.012
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Proses Reaktor Jurnal Kompetensi Teknik Jurnal Bahan Alam Terbarukan Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Sainteknol : Jurnal Sains dan Teknologi Bulletin of Chemical Reaction Engineering & Catalysis Panrita Abdi - Jurnal Pengabdian pada Masyarakat Jurnal Rekayasa Proses AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Inovasi Teknik Kimia ASEAN Journal of Chemical Engineering Jurnal Pengabdian Masyarakat Khatulistiwa International Conference on Industrial Revolution for Polytechnic Education Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Pengabdian Dinamika
Dhoni Hartanto
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

Published : 38 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 38 Documents
Search

 1   2   3   4 
Reparameterization of Binary Interaction Parameters for The Gamma-Valerolactone Purification Process Agung Ari Wibowo; Mufid Mufid; Asalil Mustain; Rizqy Romadhona Ginting; Dhoni Hartanto
Jurnal Teknik Kimia dan Lingkungan Vol. 6 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (695.947 KB) | DOI: 10.33795/jtkl.v6i1.286

Abstract

Selain produksi biodiesel, bioetanol, biometana dan biohidrogen dari sumber terbarukan, gamma-valerolactone (GVL) muncul sebagai bahan bakar terbarukan potensial lainnya yang dapat diproduksi dari biomassa. GVL menunjukkan karakteristik yang sesuai sebagai sumber energi cair berkelanjutan yang menjanjikan. Dlaam kegiatan produksi GVL murni jumlah besar pastinya melibatkan proses pemisahan/ pemurnian, salah satunya adalah distilasi. Dalam perancangan proses distilasi diperlukan data kesetimbangan Uap – Cair (VLE), dan untuk akurasi perancangan biasanya digunakakan software simulasi proses seperti ChemCAD. Dalam penelitian ini, data VLE yang tersedia akan direparamterisasi sehingga bisa digunakan sebagai parameter model thermodinamika di Software ChemCAD. Pada penelitian ini dilakukan reparemeterisasi parameter interaksi biner (BIP) model NRTL untuk data VLE komponen yang terlibat dalam produksi GVL dari literature yang tersedia. Kemudian BIP hasil reparemterisasi digunakan untuk analisis sensitivitas pada shortcut kolom distilasi. Hasil analisis sensitivitas menunjukan bahwa perubahan suhu umpan berpengaruh terhadap konvigurasi kolom, tetapi tidak pada kualitas GVL yang dihasilkan In addition to producing biodiesel, bioethanol, biomethane, and biohydrogen from renewable sources, gamma- valerolactone (GVL) is emerging as a potential renewable fuel from biomass. As a promising long-term liquid energy source, GVL possesses the necessary characteristics. The production of pure GVL in large quantities involves a separation/purification process, one of which is distillation. In designing the distillation process, Vapor- Liquid equilibrium(VLE) data is needed, and process simulation software such as ChemCAD is usually used for design accuracy. In this study, the available VLE data will be reparameterized to be used as a thermodynamic model parameter in ChemCAD Software. The binary interaction parameter (BIP) NRTL model reparameterization for the VLE data of the components involved in the creation of GVL was carried out in this work using data from the literature. The reparameterized BIP was then applied to the distillation column shortcut for sensitivity analysis. The findings of the sensitivity study reveal that changing the feed temperature changes the column arrangement but not the quality of the GVL produced
Parameter Interaksi Biner Kesetimbangan Uap-Cair Campuran yang Melibatkan Alkohol Rantai Bercabang atau Aseton untuk Optimasi Proses Pemurnian Bioetanol Asalil Mustain; Khalimatus Sa'diyah; Agung Ari Wibowo; Dhoni Hartanto
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 2 (2019): October 2019
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.838 KB) | DOI: 10.33795/jtkl.v3i2.81

Abstract

Parameter interaksi biner kesetimbangan uap-cair campuran yang melibatkan alkohol rantai bercabang atau aseton telah ditentukan pada penelitian ini. Data kesetimbangan uap-cair kondisi isobarik pada tekanan atmosferik telah dipilih total sebanyak 14 sistem. Data kesetimbangan tersebut kemudian dikorelasikan dengan model koefisien aktifitas Wilson, Non Random Two-Liquid (NRTL) dan Universal Quasi-Chemical (UNIQUAC) untuk diperoleh parameter interaksi binernya. Parameter tersebut ditentukan sebagai fungsi suhu pada penelitian ini untuk meningkatkan kemampuannya dalam aplikasi pada kisaran suhu yang panjang. Korelasi menunjukkan hasil yang baik dikarenakan root mean square deviation (RMSD) antara data eksperimental dengan hasil perhitungan relatif kecil. Sebagai tambahan, perilaku masing-masing sistem biner tersebut juga diamati pada kesempatan ini. Parameter yang diperoleh dapat digunakan untuk optimasi desain kolom distilasi pada proses pemurnian produksi bioetanol. The binary interaction parameters of vapor-liquid equilibrium for the mixtures involving branched-chain higher alcohols or acetone have been determined in this study. Isobaric vapor-liquid equilibrium data at atmospheric pressure have been selected for a total of 14 systems. The VLE data were then correlated with the Wilson, NonRandom Two-Liquid (NRTL) and Universal Quasi Chemical (UNIQUAC) activity coefficient models to obtain its binary interaction parameters. The parameters were determined as the temperature-dependent in this study to increase its ability in wide temperature range applications. The correlations showed good results because the root mean square deviation (RMSD) between the experimental data and calculation values were relatively low. In addition, the behavior of each binary systems were also observed in this study. The obtained parameters could be used to optimize the distillation column design in the purification process of bioethanol production.
Simulasi CHEMCAD: Studi Kasus Distilasi Ekstraktif pada Campuran Terner n-Propil Asetat/n-Propanol/Air Agung Ari Wibowo; Cucuk Evi Lusiani; Rizqy Romadhona Ginting; Dhoni Hartanto
Jurnal Teknik Kimia dan Lingkungan Vol. 2 No. 2 (2018): October 2018
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (743.916 KB) | DOI: 10.33795/jtkl.v2i2.75

Abstract

Pemisahan n-propil asetat dari campuran terner n-propil asetat/n-propanol/air merupakan salah satu proses yang tidak dapat dilakukan dengan distilasi sederhana. Adanya azeotrop terner minimum dari campuran tersebut menyebabkan n-propil asetat hanya dapat dipisahkan dari campuran n-propanol dan air salah satunya dengan metode distilasi ekstraktif. Distilasi ekstraktif merupakan proses vaporisasi parsial dengan menambahkan suatu agen pemisah non-volatil yang disebut sebagai sovent atau agen ekstraktif. Solvent yang digunakan dalam simulasi proses ini adalah campuran DMSO (Dimetil Sulfoksida) dan Gliserol dengan komposisi 50 % massa dengan perbandingan 1:2 untuk massa umpan kolom : solvent. Feed yang digunakan adalah n-propanol (10 kmol/jam) dan asam asetat (13 kmol/jam) masing-masing pada suhu 25°C dan tekanan 101,3 kPa. Hasil n-propil asetat terbaik diperoleh saat solvent diumpankan pada stage 5 dengan fraksi mol n-propil asetat pada distilat 0,9975 disertai dengan minimumnya energi reboiler yang digunakan pada konfigurasi kolom ini. n-Propyl acetate separation of the n-propyl acetate /n-propanol/water mixture composition can't be done by simple distillation. The existence of minimum ternary azeotrope on the mixture causes n-propyl acetate can be separated only by extractive distillation method. Extractive distillation is a partial vaporization process in the presence of a non-volatile separating agent called as solvent or extractive agent. Solvent used in the simulation process is DMSO (Dimethyl Sulfoxide)-Glycerol mixture (50% mass) with a ratio of 1: 2 for column feed : solvent. n-Propanol (10 kmol/hour) and acetic acid (13 kmol/hour) are fed into reactor (before extractive distillation process) at 25°C and 101.3 kPa, respectively. The best results of n-propyl acetate were obtained when the solvent was fed to stage 5 in which mole fraction of n-propyl acetate in distillate 0.9975 accompanied by the minimum reboiler energy used in this column configuration.
Enzymatic Interesterification of Crude Palm Oil with Methyl acetate: Effect of Pre-treatment, Enzyme’s Dosage and Stability Muhammad Zarin Amin Zainal; Harumi Veny; Fazlena Hamzah; Miradatul Najwa Muhd Rodhi; Andri Cahyo Kumoro; Ratna Dewi Kusumaningtyas; Haniif Prasetiawan; Dhoni Hartanto
Bulletin of Chemical Reaction Engineering & Catalysis 2023: Just Accepted Manuscript and Article In Press 2023
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17763

Abstract

In the present study, biodiesel was produced via the enzymatic interesterification of Crude Palm Oil (CPO) and methyl acetate within ultrasonic condition. In contrast to alcohol, methyl acetate as an acyl acceptor does not inhibit lipase activity and can create triacetin as a useful byproduct.  In this work, Immobilized lipase from Candida Antartica A (CaLA) was utilized as biocatalyst and the effect of using non-pretreated CPO and pre-treated CPO as feedstock were explored. The pre-treatment of CPO involves degumming with acid, washing with water, and bleaching. The enzymatic interesterification was conducted in three-neck flasks using an ultrasonic water bath at 45o C.  Few parameter effects on biodiesel production were also investigated, including the effect of molar ratio of CPO to methyl acetate, the effect amount of lipase, and the reusability of immobilized lipase (CaLA) in the interesterification reaction.  The highest average Biodiesel yield of 80.6% was obtained from pretreated CPO at a molar ratio of 1:9 with 100 mg (1% w/v) of Immobilized CaLA, after three hours of reaction. Further research on the reusability of immobilized CaLA revealed that the yield of biodiesel reduced significantly after the second run. The results of the present study also demonstrated that Immobilized CaLA performed well at low concentrations but had low stability, with productivity decreasing to 92% upon reuse after the initial run. In order to make Immobilized lipase economically viable, further research must be conducted to overcome its low stability in the reaction.
Enzymatic Interesterification of Crude Palm Oil with Methyl acetate: Effect of Pre-treatment, Enzyme’s Dosage and Stability Muhammad Zarin Amin Zainal; Harumi Veny; Fazlena Hamzah; Miradatul Najwa Muhd Rodhi; Andri Cahyo Kumoro; Ratna Dewi Kusumaningtyas; Haniif Prasetiawan; Dhoni Hartanto
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 2 Year 2023 (August 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17763

Abstract

In the present study, biodiesel was produced via the enzymatic interesterification of Crude Palm Oil (CPO) and methyl acetate within ultrasonic condition. In contrast to alcohol, methyl acetate as an acyl acceptor does not inhibit lipase activity and can create triacetin as a useful byproduct.  In this work, Immobilized lipase from Candida Antartica A (CaLA) was utilized as biocatalyst and the effect of using non-pretreated CPO and pre-treated CPO as feedstock were explored. The pre-treatment of CPO involves degumming with acid, washing with water, and bleaching. The enzymatic interesterification was conducted in three-neck flasks using an ultrasonic water bath at 45o C.  Few parameter effects on biodiesel production were also investigated, including the effect of molar ratio of CPO to methyl acetate, the effect amount of lipase, and the reusability of immobilized lipase (CaLA) in the interesterification reaction.  The highest average Biodiesel yield of 80.6% was obtained from pretreated CPO at a molar ratio of 1:9 with 100 mg (1% w/v) of Immobilized CaLA, after three hours of reaction. Further research on the reusability of immobilized CaLA revealed that the yield of biodiesel reduced significantly after the second run. The results of the present study also demonstrated that Immobilized CaLA performed well at low concentrations but had low stability, with productivity decreasing to 92% upon reuse after the initial run. In order to make Immobilized lipase economically viable, further research must be conducted to overcome its low stability in the reaction.
Extractive Distillation of Ethanol/Water with 1-Butyl-3-Methylimidazolium Bromide Ionic Liquid as a Separating Agent: Process Simulation Hartanto, Dhoni; Handayani, Prima Astuti; Astuti, Widi; Kusumaningtyas, Ratna Dewi; Purwana, Yulian Candra; Maftukhaturrizqiyah, Maftukhaturrizqiyah; Wijayanti, Reni Titis; Wulansari, Durroti Zuhriah; Wulansarie, Ria; Pradnya, Irene Nindita; Hadikawuryan, Danang Subarkah; Wibowo, Agung Ari; Sholihin, Riza Mazidu; Chafidz, Achmad; Khoiroh, Ianatul
ASEAN Journal of Chemical Engineering Vol 23, No 3 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.72250

Abstract

Ethanol purification has become of great interest recently because ethanol can be used as renewable energy, solvent in many industries, and for medicinal purposes. The separation of ethanol from water is challenging because the azeotropic point has appeared in this binary mixture. Extractive distillation technology is one of the most interesting methods to separate ethanol from water due to the competitiveness of its energy consumption and capital investment costs. Ionic liquids such as 1-butyl-3-methylimidazolium bromide [BMIM] [Br], categorized as a green solvent, produce a significant salting-out effect in the ethanol-water system. This makes ionic liquid a promising solvent in ethanol-water separation. This study simulated the extractive distillation of an ethanol-water system with 1-butyl-3-methylimidazolium bromide as a solvent. The simulation and sensitivity analysis were performed on the Aspen Plus Process Simulator to obtain the optimum configuration. The NRTL thermodynamic model was used in this study. The effects of the number of stages (NS), binary feed stage (BFS), entrainer feed stage (EFS), and reflux ratio (RR) on the ethanol concentration with minimum energy requirements were studied. The most optimal configurations to produce a high ethanol concentration with less energy are NS 28, BFS 22, EFS 4, and RR 1.5.
Enzymatic Transesterification Using Different Immobilized Lipases and its Biodiesel Effect on Gas Emission Mohamad Nor, Nur Fatin Syafiqah; Veny, Harumi; Hamzah, Fazlena; Muhd Rodhi, Miradatul Najwa; Kusumaningtyas, Ratna Dewi; Prasetiawan, Haniif; Hartanto, Dhoni; Sulaiman, Sarina; Sazali, Rozana Azrina
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20143

Abstract

Biodiesel, a third-generation bio-fuels, offering several advantages over regular diesel fuel. Waste cooking oil (WCO) emerges as an ideal feedstock due to its availability and easy accessibility. In this work, biodiesel is utilized from two different types of immobilized lipases: Rhizomucor miehei lipase (RMIM) and Candida antarctica lipase B (CALB). The impact of the molar ratio of oil to methyl acetate (1:3-1:12) was evaluated for both lipases, and the resultant biodiesel was tested in diesel engine. The enzymatic transesterification was carried out in ultrasonic assistance and the results showed that the greatest yield of 81.20% at 45℃, using CALB as a biocatalyst, 1.8% (w/v) lipase and oil to methyl acetate molar ratio of 1:12 within 3 hours. Triacetin, by-product was determined their concentration for each molar ratio and analyzed using FTIR range of 500cm-1 to 4000cm-1, revealing a significant absorption peak at 1238.90cm-1. Biodiesel was blended with commercial diesel fuel in varying quantities of 7, 10, and 20% by volume (B20). The results were compared to Industrial Diesel Fuel 7% (B7) and Commercial Diesel Fuel 10% (B10). NOx and CO2 emission drops as the percentage of diesel/biodiesel blends increases, supporting WCO as a cost-effective biodiesel feedstock with low petrol pollution.
PENINGKATAN PRODUKSI BATIK TULIS LASEM MELALUI PERBAIKAN KUALITAS DAN KAPASITAS KETEL PADA PROSES PEWARNAAN Handayani, Prima Astuti; Hartanto, Dhoni; Nurrohmah, Siti
Jurnal Pengabdian Dinamika Vol 5, No 1 (2018)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/dinamika.v5i1.8753

Abstract

Batik tulis merupakan produk kerajinan tangan yang merupakan warisan budaya Indonesia. Kecamatan Pancur merupakan daerah sentra perajin Batik Tulis Khas Lasem. Di daerah ini terdapat kelompok perajin Rosyta Batik dan Batik Mulya Jaya yang berpotensi untuk mengembangkan produk unggulan daerah ini. Kedua mitra memliki permasalahan yang sama yaitu ketel untuk proses nglorot dan fiksasi masih terbuat dari besi (drum bekas), sehingga kapasitasnya kecil dan menghasilkan limbah logam berat Zn. Melalui Program Pengembangan Produk Unggulan Daerah (PPPUD), permasalahan dari kedua mitra diselesaikan sehingga tujuan spesifik dari kegiatan pengabdian PPPUD adalah meningkatkan kapasitas dan kualitas produksi batik tulis laseman pada perajin Rosyta Batik dan Batik Mulya Jaya.Kegiatan pengabdian PPPUD yang dilakukan antara lain penggantian ketel pada proses nglorot dan fiksasi dengan berbahan stainless steel. Ketel ditingkatkan kapasitasnya sekitar 50 %, dengan diameter ketel 80 cm dan tinggi 70 cm dengan ketebalan ketel 2 cm. Ketel berbahan stainless steel ini menghasilkan pemanasan lebih sempurna sehingga dapat mengefisienkan kebutuhan kayu bakar. Selain itu, ketel ini dapat digunakan untuk proses pewarnaan alam.Hasil dari kegiatan ini dapat disimpulkan bahwa mitra Rosyta Batik dan Batik Mulya Jaya di Kecamatan Pancur Kabupaten Rembang Jawa Tengah dapat meningkatkan produksi sekitar 50 %, serta penggunaan kayu bakar dan air yang lebih sedikit sehingga proses produksi menjadi lebih efektif dan efisien dibandingkan dengan kondisi semula.
Co-Authors Agung Ari Wibowo Agung Ari Wibowo Agung Ari Wibowo Agung Ari Wibowo Akhmad Sutrisno Andri Cahyo Kumoro Anugrahani, Viona Widya Asalil Mustain Asalil Mustain Asalil Mustain Asalil Mustain Asriningtyas Ajeng Erprihana, Asriningtyas Ajeng Bahlawan, Zuhriyan Ash Shiddieqy Bayu Tri Wibowo Bayu Triwibowo Catur Rini Widyastuti, Catur Rini Chafidz, Achmad Cucuk Evi Lusiani Cucuk Evi Lusiani Dewi Selvia Fardhyanti Dimas Rahadian Aji Muhammad, Dimas Rahadian Aji Diyah Saras Wati Eny Nurhayati Erprihana, Asriningtyas Ajeng Fazlena Hamzah Fazlena Hamzah Fidyawati, F Hadikawuryan, Danang Subarkah Hamzah, Fazlena Haniif Prasetiawan Harumi Veny Harumi Veny Ibnu Eka Rahayu Irene Nindita Pradnya Khalimatus Sa'diyah Khalimatus Sa'diyah Khoiroh, Ianatul Khoiroh, Ianatul Kuntoro Kuntoro Kusuma, Andre Dianata Hogi Loveyanto, Rendy Okta Maftukhaturrizqiyah, Maftukhaturrizqiyah Maksiola, Masni Megawati - Megawati Megawati Megawati Megawati Mezaki, Naufal Mudrik Miradatul Najwa Muhd Rodhi Miradatul Najwa Muhd Rodhi Mohamad Nor, Nur Fatin Syafiqah Mufid Mufid Mufid Mufid Muhammad Fikri Al Ghifari Muhammad Zarin Amin Zainal Muhd Rodhi, Miradatul Najwa Mutaqin, Afrizal Mai Nugroho, Febry Dwi Nur Qudus Oktafiani Oktafiani, Oktafiani Oktafiani, Oktafiani Oktafiani, Oktafiani Pradnya, Irene Nindita Prima Astuti Handayani Purwana, Yulian Candra Radenrara Dewi Artanti Putri, Radenrara Dewi Artanti Rahayu, Ibnu Eka Rakhmawati, Fatih Ratna Dewi Kusumaningtyas Ria Wulansarie, Ria Riza Mazidu Sholihin Rizqy Romadhona Ginting Rizqy Romadhona Ginting Rizqy Romadhona Ginting Santi Wijayanti, Dwi Gansar Sarina Sulaiman Satya Budi Nugraha Sazali, Rozana Azrina Siti Nurrohmah Sutrisno, Akhmad Suwito, Slamet Syamrizal, Zakky Syifa Karimah Takwanto, Anang Veny, Harumi Wahid Akhsin Budi Nur Sidiq, Wahid Akhsin Budi Nur Waliyuddin Sammadikun Wara Dyah Pita Rengga Wibowo, Bayu Tri Widi Astuti Wijayanti, Reni Titis Wulansari, Durroti Zuhriah Zakaria, Zainul Akmar