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All Journal International Journal of Advances in Applied Sciences International Journal of Renewable Energy Development SPEKTRUM INDUSTRI Jurnal Bahan Alam Terbarukan CHEMICA Jurnal Teknik Kimia Eksergi: Chemical Engineering Journal Prosiding Semnastek IJEMS (Indonesian Journal of Environmental Management and Sustainability) Sains Natural: Journal of Biology and Chemistry Equilibrium Journal of Chemical Engineering PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO Prosiding Seminar Nasional dan Call Paper STIE Widya Wiwaha Indonesian Journal of Chemical Engineering Jurnal Teknologi dan Inovasi Industri
Martomo Setyawan
Universitas Ahmad Dahlan
Religion Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Public Health

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STUDI PENGENDALIAN PEMANAS PADA REAKTOR HIDROGENASI MINYAK NABATI MENJADI GREENDIESEL DENGAN JAKET PEMANAS Setyawan, Martomo
CHEMICA: Jurnal Teknik Kimia Vol 1, No 1 (2014): Juni 2014
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (152.638 KB)

Abstract

Greendiesel is the second generation of the biodiesel fuel. The advantages of greendiesel compare  with first generation of biodiesel are higher cetane number, no waste on the production and low CO2 emission. Greendiesel was made from vegetable oil with hydrogenation process at the high temperature and high pressure, this process has high risk to explode. This research was to study about heat transfer mechanism from electric heat source to the reactor with avoid explode, by to avoid hydrogen contact with high temperature above 500 OC.Heat transfer mechanism on the hydrogenation reactor was designed from electric heat source transferred to the oil heater and then to the reactor. At this research was studied effluence of the electric voltage  to the temperature of the heating oil and the water inside at the reactor.The Result of this research was show increasing voltage cause increasing speed of heating. At the all voltage increasing heating speed occur until 40 minutes as linier and after 40 minutes the heating speed decrease as logarithmic. By indirect heating by electric source contact between hydrogen and high temperature surface can be avoided.
Analisa Perpindahan Panas dan Pengembunan pada Pengembunan Uap Cair dengan Pengembunan Parsial Bertingkat Setyawan, Martomo
CHEMICA: Jurnal Teknik Kimia Vol 2, No 2 (2015): Desember 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.292 KB) | DOI: 10.26555/chemica.v2i2.4567

Abstract

Production of charcoal as an alternative fuel have been growth as the solution of the national problem about decreasing energy source from petroleum. Production of charcoal has a useful side product in the form of liquid smoke. The liquid smoke can be used as food preservative in the high grade of liquid smoke and the low grade liquid smoke can be used as wood preservative form termite. The conventional process on production liquid smoke it was using redistillation the raw liquid smoke from direct condensation. This process was consumed lot of energy. Liquid smoke consist of some components which had different boiling point.The aim of this research was to study the influence in using different combination of vertical condensor at the condensation of liquid smoke process fro the making coconut shell charcoal. This research was done by make some coconut shell charcoal and the smoke which was formed was flown passed some condensors.The result of this research shown that condensation of liquid smoke in the vertical condenser occured a contact  between condensation down flow and the vapour. The temperature of  the condensation taking point can be adjust by adjusting heat transfer area of the vertical condenser. The tar can be taken at the temperature above 100 0C. The colour of the liquid smoke was lighter with the lower temperature.
Effect of Devices and Driving Pressures on Energy Requirements and Mass Transfer Coefficient on Microalgae Lipid Extraction Assisted by Hydrodynamic Cavitation Setyawan, Martomo; Mulyono, Panut; Sutijan, Sutijan; Pradana, Yano Surya; Prasakti, Laras; Budiman, Arief
International Journal of Renewable Energy Development Vol 9, No 3 (2020): October 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2020.26773

Abstract

Previous studies of biodiesel production from microalgae have concluded that microalgal biodiesel is not profitable at an industrial scale due to its excessive energy consumption for lipid extraction. Hydrodynamic cavitation lipid extraction is one of the extraction methods which has lower energy consumption. Thismethod enables a fast extraction rate and low energy consumption for cell disruption. In order to achieve optimum process conditions, several influential parameters, which are cavitation generator geometry and driving pressure, need to be scrutinized. The experimental result showed that the maximum yield was obtained at 5 bar driving pressure. The lowest specific extraction energy was obtained at 4.167 bar driving pressure while using one side concave cavitation generator geometry with the ratio of the reduced cross-sectional area of 0.39. The value of the energy extraction requirement 17.79 kJoule/g lipids is less than the biodiesel heating value, and the value of the volumetric mass transfer coefficient is almost 20 times fold greater than the conventional extraction method, therefore this method is promising to be further developed.
STUDI PENGENDALIAN PEMANAS PADA REAKTOR HIDROGENASI MINYAK NABATI MENJADI GREENDIESEL DENGAN JAKET PEMANAS Martomo Setyawan
CHEMICA: Jurnal Teknik Kimia Vol 1, No 1 (2014): Juni 2014
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (152.638 KB) | DOI: 10.26555/chemica.v1i1.503

Abstract

Green diesel is the second generation of biodiesel fuel. The advantages of green diesel compared with the first generation of biodiesel are higher cetane number, no waste on the production, and low CO2 emission. Green diesel was made from vegetable oil with a hydrogenation process at the high temperature and high pressure, this process has high risk to explode. This research was to study about heat transfer mechanism from electric heat source to the reactor with avoid explode, by to avoid hydrogen contact with high temperature above 500 OC.The heat transfer mechanism on the hydrogenation reactor was designed from electric heat source transferred to the oil heater and then to the reactor. This research was studied the effluence of the electric voltage to the temperature of the heating oil and the water inside the reactor.The Result of this research showed increasing voltage cause increasing speed of heating. At the all voltage increasing heating speed occur until 40 minutes as linier and after 40 minutes the heating speed decrease as logarithmic. By indirect heating by electric source contact between hydrogen and high temperature surface can be avoided.
Activation of Coconut Shell Charcoal and Application for Bleaching Used Cooking Oil Siti Jamilatun; Martomo Setyawan; Lutfiatul Janah; Rifka Alfiyani; Ilham Mufandi
CHEMICA: Jurnal Teknik Kimia Vol 8, No 1 (2021): June 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v8i1.20085

Abstract

This study aimed to determine coconut shell-activated charcoal's ability in the bleaching process of used cooking oil. Activation of coconut shell charcoal was carried out using 5N H2SO4 solution. Activated charcoal is made through a pyrolysis process at a temperature of 350 ⁰C for 1 hour. The experiment was carried out in four stages: activation of activated charcoal, testing the characteristics of activated charcoal, bleaching used cooking oil, and testing the characteristics of used cooking oil. The characteristic test of activated charcoal is moisture content, ash content, and iodine absorption rate. Meanwhile, used cooking oil characteristics were carried out in water content, specific gravity, and color test. The results showed that the ash content of activated charcoal was 2.4-2.8 %, the water content of activated charcoal was 0.5-1%, the iodine absorption content was relatively high, namely 371,896-548,745 mg/g. The water content of used cooking oil was 0.493-0.503 %, the specific gravity of used cooking oil was between 0.888-0.892 %, and the absorbance was between 0.001-0.006. The results of this study were standardized using the Indonesian National Standard Method (SNI). The results show that 40 mesh of activated charcoal is better than 20 mesh.
Analisa Perpindahan Panas dan Pengembunan pada Pengembunan Uap Cair dengan Pengembunan Parsial Bertingkat Martomo Setyawan
CHEMICA: Jurnal Teknik Kimia Vol 2, No 2 (2015): Desember 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.292 KB) | DOI: 10.26555/chemica.v2i2.4567

Abstract

Production of charcoal as an alternative fuel have been growth as the solution of the national problem about decreasing energy source from petroleum. Production of charcoal has a useful side product in the form of liquid smoke. The liquid smoke can be used as food preservative in the high grade of liquid smoke and the low grade liquid smoke can be used as wood preservative form termite. The conventional process on production liquid smoke it was using redistillation the raw liquid smoke from direct condensation. This process was consumed lot of energy. Liquid smoke consist of some components which had different boiling point.The aim of this research was to study the influence in using different combination of vertical condensor at the condensation of liquid smoke process fro the making coconut shell charcoal. This research was done by make some coconut shell charcoal and the smoke which was formed was flown passed some condensors.The result of this research shown that condensation of liquid smoke in the vertical condenser occured a contact  between condensation down flow and the vapour. The temperature of  the condensation taking point can be adjust by adjusting heat transfer area of the vertical condenser. The tar can be taken at the temperature above 100 0C. The colour of the liquid smoke was lighter with the lower temperature.
Comparison of Hexane, Methanol, and Their Mixtures as Solvents for Microalgae Lipid Extraction by Hydrodynamic Cavitation Martomo Setyawan; Siti Jamilatun; Muhammad Nufail Syafii; Resyaldi Pratama
CHEMICA: Jurnal Teknik Kimia Vol 7, No 2 (2020): Desember 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v7i2.16803

Abstract

The process of producing biodiesel from microalgae as an effort to solve energy problems is currently constrained by the negative energy balance, which requires more energy to produce than the heating value of biodiesel. The lipid extraction assisted by hydrodynamic cavitation requires less energy extraction than the heating value of biodiesel. The effort to increase the energy efficiency of the hydrodynamic cavitation extraction process is to find a solvent that has a low boiling point. This study aims to improve energy efficiency by using a solvent mixture of hexane and methanol, which has a low boiling point. The results showed that the methanol hexane mixture with a volume ratio of 4:1 gave the lowest mixture boiling point of 51.2 °C with a yield of 3.28% g lipid/ g dry microalgae. The process runs at a temperature of 30 °C with a driving pressure of 5 kg/cm2, with an extraction energy requirement of 2 kJ/g of lipids. This process is feasible to be developed to produce biodiesel from microalgae with a positive energy balance.
Potensi Produk Cair (Oil Phase dan Water Phase) Pirolisis Mikroalga Sebagai Pengawet Makanan Siti Jamilatun; Martomo Setyawan; Ilham Mufandi; Arief Budiman
CHEMICA: Jurnal Teknik Kimia Vol 6, No 2 (2019): Desember 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v6i2.14813

Abstract

Microalgae is one of the oldest living organisms namely Thallophyta (plant lacking roots, stems, and leaves) that have chlorophyll as a pigment to mainly photosynthesis process. Microalgae as the water plant had some characteristics such as high carbohydrate, protein, and lipid content in which can be produced energy (liquid, solid, and gas) by using the pyrolysis process. The raw material in this experiment was used Spirulina platensis as the type of microalgae. The residue of Spirulina platensis was content acid, phenol, dan carbonyl in which this product liquid is potential as a food preservative. The experiment was performed by using the pyrolysis process which is equipped with a cooler (condenser) to condense the combustion vapor. Thermal decomposition was conducted in the pyrolysis reactor with a temperature of 300 ℃, 400 ℃, 500 ℃, and 600 ℃ under atmospheric condition. The result indicated that the pyrolysis proses had oil phase as the top result and water phase as the bottom result. The result from GC/MS analysis reported that the pyrolysis process on temperature of 300 ℃ can produce the oil phase with the phenol content of 6.7 wt.%, acid of 33.03 wt.%, carbonyl of 4.95 wt.%, and Poly Aromatic Hydrocarbon (PAH) of 6.23 wt.%, respectively. Otherwise, the pyrolysis process can produce the water phase (liquid smoke) on temperature 400 °C, 500 °C, dan 600 °C with the phenol content of 0.22 wt.%, acid content of 0.69-9.12 wt.%, carbonyl content of 10.46-13.02 wt.% and PAH of 26.93-45.18 wt.%. The superiority of preservatives from residual Spirulina platensis has a high nitrogenate content from protein decomposition (10.13-31.22 wt.%). High protein content in food preservatives can be used as an additive compound to increase protein intake.
PEMBUATAN ARANG AKTIF DARI TEMPURUNG KELAPA DENGAN AKTIVASI SEBELUM DAN SESUDAH PIROLISIS Siti Jamilatun; Martomo Setyawan; Siti Salamah; Dwi Astri Ayu Purnama; Riska Utami Melani Putri
Prosiding Semnastek PROSIDING SEMNASTEK 2015
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Kebutuhan arang aktif semakin meningkat seiring dengan kebutuhan industri akan bahan pembersih dan penyerap dan juga bahan pengemban katalisator. Arang aktif dapat dihasilkan dari bahan-bahan yang mengandung karbon atau dari arang yang diaktivasi untuk mendapatkan permukaan yang lebih luas. Arang aktif dapat mengadsorpsi gas dan senyawa kimia tertentu tergantung besar atau volume pori-pori dan luas permukaan. Penelitian ini bertujuan membuat karbon aktif dari tempurung kelapa dengan pengaktivasi KOH dilakukan satu kali aktivasi ( sesudah pirolisis) dan dua kali aktivasi (sebelum dan sesudah pirolisis). Kualitas arang aktif yang diperoleh dianalisis untuk mengetahui karateristik kadar air, kadar abu,  iodine number dan surface area karbon aktif dari arang tempurung kelapa yang sesuai dengan SII No.0258 – 79. Berdasarkan hasil penelitian disimpulkan bahwa karbon aktif dapat dibuat dari tempurung kelapa dengan terlebih dahulu dilakukan pirolisis dan kemudian dilakukan aktivasi. Untuk mengetahui pengaruh aktivasi maka dilakukan aktivasi satu kali ( sesudah pirolisis) dan aktivasi dua kali (sebelum dan sesudah pirolisis) dengan aktivasi kimia KOH 2N dengan variasi waktu perendaman. Hasil menunjukkan bahwa aktivasi dua kali memberikan hasil iodine number dan surface area lebih tinggi daripada aktivasi satu kali. Karakteristik karbon aktif yang dihasilkan untuk iodine number 300-500 mg I2/gram arang aktiv telah sesuai dengan SII No.0258–79, untuk kadar air, kadar abu belum sesuai dengan standar diatas, surface area 185,447 m2/g atau mengalami peningkatan 35 kali surface area dengan arang tempurung kelapa yang tidak diaktivasi. Arang aktif ini akan digunakan sebagai katalis pada proses pirolisis dan gasifikasi biomassa untuk penelitian selanjutnya.
PELATIHAN PEMBUATAN LILIN AROMATERAPI BERBASIS MINYAK JELANTAH DI DUSUN SIDOMOYO KRAGILAN GODEAN SLEMAN D.I. YOGYAKARTA Adi Permadi; Martomo Setyawan; Ibdal Ibdal; Novia Rahmawati; Nisya Silvani Sembiring
SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT Vol 4 No 1 (2022): Seminar Nasional Penelitian dan Pengabdian 4 UM Metro tahun 2022
Publisher : Universitas Muhammadiyah Metro

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Abstract

Minyak goreng sisa pemakaian kebutuhan rumah tangga yang telah dipakai berulang ulang atau biasa disebut minyak jelantah cenderung tidak banyak dimanfaatkan oleh masyarakat dan dibuang sembarangan ke tanah ataupun aliran air sehingga membuat lingkungan menjadi tercemar. Potensi limbah minyak jelantah menjadi sangat besar karena menjadi limbah buangan usaha rumah makan cepat saji, catering, warung makan, hotel bahkan industri besar yang mengolah makanan yang di goreng. Salah satu upaya memanfaatkan minyak jelantah untuk mengurangi pencemaran lingkungan adalah membuat menjadi lilin aromaterapi. Mengingat hal tersebut pengabdian masyarakat yang dilakukan di Sidomoyo Kragilan Godean Sleman D.I.Yogyakarta dengan menggandeng mitra catering Ar-Ruz berupaya memberi penyuluhan pemanfaatan minyak jelantah sebagai bahan dasar membuat lilin aromaterapi melalui ceramah, diskusi interaktif dan workshop praktek langsung dengan memperhatikan protokol kesehatan. Kegiatan ini dilakukan di masa pandemi Covid-19 dan di masa pemberlakukan pembatasan kegiatan masyarakat (PPKM) oleh pemerintah. Harapan dari penyuluhan ini, masyarakat dapat meningkatkan kesadaran terhadap kesehatan dan kebersihan lingkungan serta dapat menambah nilai ekonomi warga masyarakat
Co-Authors Adi Permadi Anis Herliyati Mahsunah Arief Budiman Arief Budiman Desfitri , Erda Rahmilaila Dhias Cahya Hakika Dhias Cahya Hakika Dwi Astri Ayu Purnama Endah Sulistiawati Erna Astuti Evitasari, Rachma Tia Febriani, Annisa Vada Hanin, Nabila Hanum, Farrah Fadhillah Hapsauqi, Iqbal Ibdal Ibdal Ikhlasul Amal Ilham Mufandi Ilham Mufandi Jaka Kuncara Joko Pitoyo Kuncara, Jaka Lara Arilisa K Lara Arilisa K Lutfiatul Janah M. Idris M. Idris Mazareta, Selva Muhammad Kunta Biddinika Muhammad Nufail Syafii Mulyono, Sekar Larasati Nirmalasari, Jiran Nisya Silvani Sembiring Novia Rahmawati Panut Mulyono Pradana, Yano Surya Prasakti, Laras Resyaldi Pratama Rifka Alfiyani Riska Utami Melani Putri Siti Jamilatun Siti Salamah Siti Salamah Soedjatmiko Suci Fazriyah N Suci Fazriyah N Suhendra Suhendra Suhendra Sutijan Totok Eka Suharto Ulandari, Rizki Wijayanti, Karima Anggita Zahrul Mufrodi, Zahrul