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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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Organic Pigment from Cassava Peel as Intermediate Material Marker Ink Martomo Setyawan; Suci Fazriyah N; Lara Arilisa K
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Engineering
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.470

Abstract

Cassava is the third staple food after rice and corn, and it’s production increase every year. Cassava production for food produces waste in the form of carbon-containing peel. It is known that carbon is used as the main ingredient in the paint and ink manufacturing industry. Carbon from cassava husk can be used as organic ink that is environmentally friendly and safe for health by using natural resins in the form of arabic gum, alcohol, and Polyetilen Glikol solvents which are processed through the stages of water content reduction, carbonization in furnance, purification and variation based on the mass of arabic gum and stirring speed. The color of the ink produced will be more concentrated if the amount of gum arab mass used more and more. The stirring speed will also make the light intensity will be higher
Optimalisasi Mutu Batubara Indonesia: Kajian Metode dan Potensi dalam Peningkatan Nilai Kalor Batubara Febriani, Annisa Vada; Hanum, Farrah Fadhillah; Kuncara, Jaka; Setyawan, Martomo
Eksergi Vol 21, No 2 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i2.11761

Abstract

Nilai kalori batubara sangat penting bagi batubara itu sendiri. Selain berpengaruh pada proses pembakaran, nilai kalori juga menunjukkan kandungan energi yang terkandung dalam batubara. Nilai kalori batubara dipengaruhi oleh beberapa parameter diantaranya ialah kelembapan, kadar abu, zat terbang, karbon tetap dan total sulfur. Namun 40% cadangan batubara di Indonesia masih kualitas rendah. Hal ini menunjukan perlu adanya teknologi peningkatan nilai kalori yang sesuai, dengan tujuan batubara kualitas rendah ini dapat digunakan secara maksimal serta mengurangi emissi CO2 yang dikeluarkan selama proses pembakaran di PLTU. Teknologi pengeringan batubara menjadi salah satu teknologi peningkatan nilai kalori batubara, dengan konsep pengurangan kadar air yang dipengaruhi oleh suhu dan tekanan. Teknologi ini terbagi menjadi empat kategori yaitu mekanis, evaporasi, non-evaporasi dan pirolisis. Sesuai dengan program hilirisasi kementrian ESDM tentang pemanfaatan batubara, teknologi yang dikembangkan dalam proses upgrading  batubara adalah teknologi UBC (Upgrading Brown Coal) dan teknologi CDB (coal dry briquette). Selain itu campuran batubara kualitas rendah dengan biomassa juga dimanfaatkan menjadi bahan bakar pembangkit listrik atau sering disebut co-firring. Baik diaplikasikan langsung maupun dibentuk menjadi briket. Program ini dijalankan untuk mendorong Program NZE pemerintah yang berkomitmen untuk mencapai nol emisi CO2 di tahun 2050. 
Pembuatan Serbuk Fikobiliprotein dari Spirulina platensis melalui Proses Freezing-Thawing dan Freeze-Drying Mazareta, Selva; Sulistiawati, Endah; Evitasari, Rachma Tia; Setyawan, Martomo; Hakika, Dhias Cahya
Eksergi Vol 21, No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12453

Abstract

Mikroalga golongan Cyanophyta seperti Spirulina Platensis (SP) merupakan salah satu sumber makanan fungsional yang bergizi. SP mengandung senyawa fikobiliprotein (PBP) yang merupakan komponen terbesar dari protein dan berfungsi sebagai antioksidan dan antikanker. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan solven-biomassa (S/B), waktu pengeringan beku, dan luas permukaan wadah sampel pada pengeringan beku terhadap serbuk PBP yang dihasilkan. Eksperimen diawali dengan proses perendaman SP kering (1,5 dan 3 g) selama 1 jam, pembekuan selama 24 jam, thawing, penyaringan vakum (30-90 menit) dan pengeringan beku (freeze-drying) pada filtrat yang diperoleh. Analisis konsentrasi PBP dalam filtrat dilakukan dengan mengukur absorbansinya menggunakan UV-Vis Spektrofotometer diuji pada panjang gelombang 562, 615, dan 652 nm.  Kadar air pada serbuk PBP setelah dilakukan proses freeze-drying diukur secara gravimeteri. Variasi yang dilakukan meliputi perbandingan S/B (6,67-133,33) mL air suling/g SP kering. Variasi waktu freeze drying selama 24 dan 32 jam. Waktu optimum untuk penyaringan vakum 30,55 menit dan menghasilkan konsentrasi PBP tertinggi (7,639 g/L). Nilai S/B optimum didapatkan  sebesar 20 mL/g dengan rendemen 112,32 mg/g (SP kering). Luas permukaan wadah sampel pada pengeringan beku yang terbaik adalah 427,5 cm2 dan banyaknya air yang teruapkan sebesar 99,71% dari berat filtrat
Iron Impregnation on Activated Carbon Prepared from Tamarind Wood (Tamarindus Indica L.) as a Potential Catalyst in Biodiesel Production Astuti, Erna; Suharto, Totok Eka; Setyawan, Martomo; Hanin, Nabila; Mulyono, Sekar Larasati
Jurnal Bahan Alam Terbarukan Vol 13, No 1 (2024): June 2024 [Nationally Accredited Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v13i1.49517

Abstract

Renewable energy in the form of biodiesel requires a process called transesterification. This process runs slowly, so a catalyst is needed to reduce the activation energy and speed up the reaction rate. Activated carbon is one of the supports in transesterification catalysts because of its high surface area and is proven to be effective in gas or liquid phase reactions. This work aims to study the potential of active carbon from tamarind wood for making catalysts, the characteristics of the catalyst and the optimal concentration of Fe(NO3)3 in the impregnation step. Activated carbon was impregnated using an Ultrasonic Processor with 80% strength at 60 oC for 60 minutes. The impregnation process was carried out with variations of 2, 4, and 6% Fe(NO3)3 dissolved in 0.09M isopropyl alcohol. Variation of processing time 30, 40, 50, 60, 70, 80 minutes. Furthermore, after the activated carbon is allowed to stand for 24 hours, a calcination process is carried out at 300oC to remove impurities. Obtained materials have been characterized by SEM and XRD. The Fe-impregnation process has been successfully carried out on activated carbon made from Tamarind wood (Tamarindus indica L.). In the Fe precursor solution concentration range of 2 – 6%, the higher the concentration of the Fe precursor solution, the higher the impregnated Fe metal. Fe-impregnated activated carbon has the characteristics of being a material consisting of a mixture of crystalline and amorphous phases with even porous surface morphology. This Fe-impregnated activated carbon is a potential material as a catalyst in the biodiesel production process.
Organic Pigment from Cassava Peel as Intermediate Material Marker Ink Setyawan, Martomo; Suci Fazriyah N; Lara Arilisa K
Indonesian Journal of Chemical Engineering Vol. 1 No. 1 (2023)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijce.v1i1.470

Abstract

Cassava is the third staple food after rice and corn, and it’s production increase every year. Cassava production for food produces waste in the form of carbon-containing peel. It is known that carbon is used as the main ingredient in the paint and ink manufacturing industry. Carbon from cassava husk can be used as organic ink that is environmentally friendly and safe for health by using natural resins in the form of arabic gum, alcohol, and Polyetilen Glikol solvents which are processed through the stages of water content reduction, carbonization in furnance, purification and variation based on the mass of arabic gum and stirring speed. The color of the ink produced will be more concentrated if the amount of gum arab mass used more and more. The stirring speed will also make the light intensity will be higher
Development of Aloe Vera-Based Desulfurization Method to Improve The Quality of Sumatra's Coal Hapsauqi, Iqbal; Desfitri , Erda Rahmilaila; Hanum, Farrah Fadhillah; Setyawan, Martomo
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 2 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i2.699

Abstract

Coal is Indonesia's primary energy source, contributing approximately 65.5% to the total electricity production in 2021. The high sulfur gas emissions during the coal combustion have negatively impacted air quality and the surrounding ecosystem. Consequently, researchers have conducted numerous studies on reducing sulfur content in coal. This study specifically explores the impact of adding Aloe vera extract in desulfurization. Aloe vera contains saponin, a surfactant-like compound that can alter the surface properties of minerals in coal, making sulfur particles easier to eliminate. In the experiment, aloe vera extract was applied to coal with variations of 100, 200, and 300 mL. The mixture was stirred using a magnetic stirrer at 100 rpm for one hour. Subsequently, the coal was separated and analyzed for sulfur content, calorific value, and ash content. The research results indicated that adding Aloe vera extract significantly reduces sulfur content in coal, simultaneously improving the overall quality of the coal with a sulfur reduction ranging from 7% to 22%. Moreover, the process reduced the ash content in the coal. By harnessing the potential of Aloe vera as a natural desulfurizing agent, this study presents an innovative and environmentally friendly solution to mitigate hazardous gas emissions during coal combustion.
Recalcitrant Industrial Wastewater Treatment Using Fenton and Photo-Fenton Oxidation: A Comparison Study Wijayanti, Karima Anggita; Hakika, Dhias Cahya; Setyawan, Martomo; Suhendra; Amal, Ikhlasul; Biddinika, Muhammad Kunta
Indonesian Journal of Environmental Management and Sustainability Vol. 8 No. 3 (2024): September
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2024.8.3.100-109

Abstract

The growth rate in agro-industrial sectors has both positive and negative effects on technological, social, and economic development. Agro-industry production generates substantial volumes of wastewater, primarily from the aqueous discharges of its manufacturing processes. Some of this wastewater contains harmful pollutants that endanger human life, health, and the sustainability of the environment and ecosystem. For example, wastewater from the bioethanol industry contains high concentrations of organic pollutants and recalcitrant compounds, with COD and BOD values exceeding 50,000 mg/L and 30,000 mg/L, respectively. The Fenton process is an oxidation method that generates hydroxyl radicals through the reaction between H2O2 and Fe2+ ions. These hydroxyl radicals are highly effective at breaking down recalcitrant compounds. In this study, a comparative analysis of recalcitrant wastewater treatment using Fenton and photo-Fenton oxidation processes was conducted. The effects of dilution factors, or initial concentrations of recalcitrant wastewater (1:25, 1:50, and 1:75), were examined. Higher dilution ratios enhanced the degradation of COD and BOD levels in wastewater, with the optimal dilution factor for both processes being 1:75. Under optimal conditions, the removal efficiencies for COD, BOD, potassium, and phenol were in the range of 72.29-99.99%. The photo-Fenton process demonstrated higher removal efficiency compared to the Fenton process. The conclusion from this study suggests that the photo-Fenton process could be successfully employed as an advanced treatment method for effectively breaking down recalcitrant wastewater. These findings could be useful for adapting these processes to field-scale applications.
Teknologi Insinerasi Sebagai Solusi Pengolahan Sampah Perkotaan dan Pemulihan Energi: A Review Idris, M; Setyawan, Martomo; Mufrodi, Zahrul
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penanganan peningkatan volume sampah perkotaan yang signifikan menjadi isu kritis di banyak kota besar, terutama karena kurangnya penerapan sistem pengelolaan sampah yang baik. Artikel ini menjelaskan bahwa salah satu solusi teknologi yang dapat digunakan adalah melalui proses insinerasi, sebuah metode pengolahan sampah dengan pembakaran pada suhu 850°C sampai 1200°C. Saat ini, proses insinerasi masih jarang diterapkan di negara berkembang. Gambaran umum tentang proses ini dan faktor-faktor yang memengaruhinya seperti suhu, komposisi sampah, laju alir udara, kadar air, waktu tinggal serta proses pencampuran bahan bakar dan udara memiliki peranan penting dalam meningkatkan efisiensi proses. Proses ini tidak hanya mengurangi volume sampah sampai 90% lebih, tetapi juga dapat menghasilkan energi panas yang dapat dikonversi menjadi energi listrik dan hasil samping pembakaran berupa abu dapat digunakan sebagai bahan konstruksi. Pemahaman mendalam ini diharapkan dapat membantu implementasi yang baik dari teknologi insinerasi dalam penanganan sampah di kota-kota besar, mengarah pada pengolahan sampah yang lebih efisien dan memulihkan energi yang dapat digunakan secara produktif.Kata kunci: efisiensi, energi, insinerasi, sampah.
Review Jurnal Pembuatan Biodiesel Dari Minyak Jelantah Menggunakan Metode Kavitasi Hidrodinamika Ulandari, Rizki; Setyawan, Martomo
Jurnal Teknologi dan Inovasi Industri (JTII) Vol 5, No 2 (2024)
Publisher : Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtii.v5i2.102

Abstract

Pembuatan biodiesel dari minyak jelantah merupakan solusi inovatif yang mengubah limbah dapur menjadi sumber energi terbarukan yang berkelanjutan. Proses ini melibatkan transesterifikasi, yang merupakan reaksi kimia penting untuk mengonversi trigliserida dalam minyak jelantah menjadi biodiesel. Minyak jelantah sering kali mengandung asam lemak bebas (FFA) dan senyawa berbahaya lainnya, sehingga tidak layak digunakan kembali untuk konsumsi manusia. Oleh karena itu, pemanfaatan minyak jelantah sebagai bahan baku biodiesel tidak hanya memberikan nilai tambah ekonomi tetapi juga mengurangi dampak lingkungan dari limbah minyak. Salah satu metode yang menjanjikan untuk meningkatkan efisiensi proses transesterifikasi adalah kavitasi hidrodinamika. Metode ini menggunakan gelombang tekanan tinggi untuk menciptakan gelembung-gelembung kecil dalam cairan, yang kemudian meledak dan menghasilkan kondisi mikrofluida yang intensif. Hal ini meningkatkan interaksi antara minyak jelantah dan alkohol, mempercepat laju reaksi, dan menghasilkan biodiesel dengan kualitas yang lebih baik. Keuntungan dari teknologi ini termasuk pengurangan waktu proses dan konsumsi energi dibandingkan dengan metode konvensional. Hasil biodiesel yang diperoleh melalui metode ini telah terbukti memenuhi standar kualitas yang ketat, termasuk viskositas kinetik, densitas, indeks asam, kadar metil ester, dan kadar monogliseraid. Dengan demikian, biodiesel dari minyak jelantah tidak hanya ramah lingkungan tetapi juga dapat digunakan sebagai alternatif bahan bakar diesel yang efisien. Kata Kunci: Biodiesel, Cavitation Hidrodinamik, Transesterifikasi, Efisiensi Lingkungan, Limbah Dapur, Alkohol, Reaksi Kimia Intensif.
CHARACTERISTICS OF BAGASSE BIOCHAR IN INDUSTRIAL SCALE PRODUCTION Kuncara, Jaka; Setyawan, Martomo; Hakika, Dhias Cahya
Prosiding Seminar Nasional dan Call Paper STIE Widya Wiwaha Vol 3 No 1 (2024): International Seminar Proceedings and Call for Paper STIE Widya Wiwaha
Publisher : Sekolah Tinggi Ilmu Ekonomi Widya Wiwaha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32477/semnas.v3i1.1101

Abstract

Bagasse is a waste that can still be processed into more useful materials, in this case it will be processed into biochar. The bagasse used is sugarcane milling waste from a sugar factory in Majalengka, Cirebon, West Java. The pyrolysis process is carried out at the biochar factory of PT XXX which is also located in the area. Making biochar with an industrial-scale pyrolysis reactor namely the rotary carbonization furnace reactor. The main components are a bagasse feeder system, rotary drum dryer, pyrolysis reactor, fan and condenser. The system operates in line from the feeder to the biochar output. The purpose of this research is to investigate the pyrolysis of bagasse in a rotary horizontal carbonization furnace reactor to study the effect of pyrolysis process parameters in the form of temperature and residence time on the product characteristics of biochar. The tests provided results that the residence time has an effect on the proximate and ultimate analysis of biochar. The results showed that with increasing residence time, the volatile meter, hydrogen and oxygen decreased while the ash content, fixed carbon, carbon and gross calories increased. The test also provides results that temperature affects the proximate and ultimate analysis of biochar. The results show that as the pyrolysis temperature increases, the parameters of ash content, fixed carbon and gross calory increase while the parameters of volatile metter, hydrogen and oxygen decrease. The morphological structure of biochar changes with increasing pyrolysis temperature and the results showed that the higher the pyrolysis temperature, the larger the diameter of the biochar pores.
Co-Authors Adi Permadi 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 Mahsunah, Anis Herliyati Mazareta, Selva Muhammad Kunta Biddinika Muhammad Nufail Syafii Mulyono, Sekar Larasati Nirmalasari, Jiran Nisya Silvani Sembiring Novia Rahmawati Othman, Mohamad Rizza 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