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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Pengabdian UntukMu NegeRI CHEESA: Chemical Engineering Research Articles JURNAL PHOTON Jurnal Teknik Kimia Jurnal Teknik Mesin Specta Journal of Technology Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Surya Teknika Journal of Mechanical Design and Testing (JMDT) METAL : Jurnal Sistem Mekanik dan Termal BATOBO: Jurnal Pengabdian Kepada Masyarakat Jurnal Polimesin

Abrar Ridwan

Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Muhammadiyah Riau. Jl. Tuanku Tambusai, Pekanbaru, Riau 28294

Author-ID : 360668

Religion Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Social Sciences Other

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Experimental & Numerical study on COVID-19 Waste Treatment Using a Gasification Type Incinerator: Laboratory Scale Ridwan Abdurrahman; Abrar Ridwan; Ahmad Kafrawi Nasution; Muhammad Kunta Biddinika
METAL: Jurnal Sistem Mekanik dan Termal Vol 5, No 2 (2021): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Due to the COVID-19 pandemic, the use of personal protective equipment in the community has contributed to the increasing amount of medical waste. Medical waste from the COVID-19 pandemic is classified as infectious medical waste which is waste related to patients who need isolation from infectious diseases. one of the solutions offered is a medical waste incinerator. By studying the medical waste incinerator model in the hospital, the researchers finally took the initiative to do a simple incinerator design. the incinerator to be used is updraft gasifier type. It is hoped that the use of this incinerator will be able to solve the existing medical waste problem. In this study, the researchers use experemental approach to get the basic data from the reactor. After gain the data, then the researcher use numerical approach which is using ansys softwere to get a better look of the temperature contour on the rector. From both study, researcher can conclude tha it would take an upgrade on the existing blower to incenerate the medical waste on a safely temperature.

Analisis Pengaruh Variasi Bahan Bakar Biomassa terhadap Mampu Nyala dan Kandungan Tar pada Reaktor Gasifikasi Tipe Updraft Abrar Ridwan; Budi Istana
Jurnal Engine: Energi, Manufaktur, dan Material Vol 2, No 1 (2018)
Publisher : Proklamasi 45 University

Pada Gasifikasi tipe Updraft bahan bakar dimasukkan dari bagian atas dan udara masuk pada bagian bawah reaktor.Kekurangan dari gasifikasi tipe Updraft adalah gas yang keluar dari reaktor berada pada kondisi temperatur rendah (<500 0C), serta membawa tar yang terkondensasi serta minyak yang berasal dari proses pirolis. Pada penelitian ini akan membandingkan bahan bakar biomassa Tempurung Kelapa dan Pelepah Kelapa Sawit dari segi mampu nyala dan kandungan tar. Bahan bakar tersebut dibakar didalam reaktor sampai Syngas terproduksi, setelah Syngas berproduksi pada reaktor, penarikan tar dapat dilakukan dan penarikan tar dihentikan apabila Syngas pada reaktor telah padam. Dari hasil penelitian, didapat mampu nyala dari biomassa Tempurung kelapa selama 43 menit 14 detik sedangkan biomassa Pelepah kelapa sawit selama 10 menit 26 detik.Berat tar kering hasil proses gasifikasi yang ditimbang menggunakan timbangan digital pada Biomassa Tempurung kelapa adalah 8,99 g, sedangkan pada Biomassa Pelepah kelapa sawit adalah 4,62 g. Banyaknya gas sampel yang disedot pompa vakum pada Biomassa Tempurung kelapa adalah 138,58 liter sedangkan pada Biomassa Pelepah kelapa sawit adalah 133,88 liter. Massa tar pada setiap liter gas sampel Biomassa Tempurung kelapa adalah 0,064 gram/liter sedangkan Biomassa Pelepah kelapa sawit adalah 0,034 gram/liter.

Analisa eksperimental terhadap distribusi produk co-pyrolysis limbah sarung tangan medis dan limbah biomassa Azzalya Putri Athala; Yulia Fitri; Wahyu Meka; Abrar Ridwan; Rain A Mahendra; Tri N Rezeki; Laras S Widara; Munawir Hamzah
Jurnal Teknik Kimia Vol 28 No 3 (2022): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v28i3.1283

Tingginya angka penyebaran covid-19 menimbulkan dampak bagi peningkatan limbah medis secara global. Limbah medis merupakan limbah infeksius yang tergolong limbah fosil, sifatnya yang non-biodegradable dapat menyebabkan pencemaran lingkungan. Salah satu metode pengelolaan limbah yang tepat saat ini adalah pirolisis. Pada penelitian ini dilakukan co-pirolisis sarung tangan medis yang digabungkan dengan limbah biologis (limbah makanan, limbah kebun dan limbah kertas) dengan persentase massa 100:0, 25:75, 50:50, 75:25, 0:100 (%). Hasil co-pirolisis sarung tangan medis dan limbah biologis berupa produk minyak, arang dan gas. Minyak dengan kadar tertinggi dihasilkan dari co-pirolisis sarung tangan medis dan limbah kertas pada persentase massa 75:25 (%) (40%). Hasil maksimum (55%) produk arang dihasilkan dari co-pirolisis sarung tangan medis dan limbah kebun pada persentase massa 75:25 (%). Kadar tertinggi (45%) dari gas diperoleh pada penggabungan sarung tangan medis dengan limbah makanan (persentase massa 75:25 (%). Secara keseluruhan, uji co-pirolisis sarung tangan medis dan limbah biomassa dengan persentase massa sampel yang divariasikan menghasilkan produk yang diharapkan dapat membantu pengembangan energi masa mendatang

Estimasi Kandungan Degadable Organic Carbon (DOC) pada Sampah Padat Kota yang masuk ke TPA Tanjung Belit di Kota Pasir Pangaraian Provinsi Riau Faizan Dalilla; Mursyidah Umar; Abrar Ridwan
SPECTA Journal of Technology Vol. 1 No. 1 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Degradable Organic Carbon (DOC) is the important element in forming CH4 in a pile of garbage in the landfill. The calculation of the potential of methane (CH4) in the landfill become the basis for control and management of GHG sourced from landfill. Estimated value of the content of DOC used calculating the weight of municipal solid waste that goes into landfill every day, counting the value of the fraction of the composition and content of dry matter of municipal solid waste by 11 components of garbage (food, paper / cardboard, gardens and parks, nappies, wood, textiles, rubber / leather, plastic, glass, metal and sampahlain etc.), to further multiplied by the fraction of a default value content of DOC in each component of trash and garbage in total. The calculations show that the total weight of waste that goes to landfill every day at 14594.05 kg / day with the largest waste composition in the form of junk food at 49.54%, followed by plastic waste (13.76%) and the smallest is junk metal composition by 1.18%. As for the fraction of the dry matter of the highest value was found in the garbage rubber / leather by 95.31%, followed by wood waste amounted to 78.61% and the smallest value was found in the garbage nappies by 17.43% and 21.23% of food waste. Based on calculations using the value of the total garbage in, the fraction of the composition and the fraction of dry material content and the fraction of DOC.

Pyrolytic Product Distribution Analysis on Co-Pyrolysis of Face Mask Waste and Lignocellulosic Waste Rain Agri Mahendra
METAL: Jurnal Sistem Mekanik dan Termal Vol 7, No 2 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.2.%p.2023

COVID-19 causes a large increase in medical and non-medical waste in the world, especially in developing countries. Improper waste management causes significant health problems and impacts on the environment. Pyrolysis is a process that utilizes thermal instability of organic components in waste to convert them into liquid (oil), solid (charcoal), gas and wax products that have potential as fuels. Co-pyrolysis of medical face masks as infectious medical waste with non-infectious medical waste such as food waste, garden waste and paper were investigated for energy valorization. Particles, temperature, nitrogen flow rate and waste characterization affected the resulting product. Pyrolysis was carried out at 400 °C with nitrogen (N2) flow rate of 0.5 L/min. Co-pyrolysis of face masks and food waste produced oil with the highest yield because food waste contains dominant amount of cellulose and hemicellulose promoting high oil yield. This pyrolysis method is considered a simple, clean, safe and effective technique to reduce the amount of waste during a global pandemic.

Analysis of Pyrolytic Product Distribution for B3 and Non-B3 Medical Waste Pyrolysis Rezeki, Tri Nur; Ridwan, Abrar; Meka, Wahyu; Fitri, Yulia; Mahendra, Rain Agri; Hamzah, Munawir; Widara, Laras Sita; Athala, Azzalya Putri
CHEESA: Chemical Engineering Research Articles Vol. 5 No. 2 (2022)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v5i2.14134.101-110

The coronavirus disease (COVID-19) has badly impacted many sectors, particularly medical waste generation in healthcare facilities. The increasing amount of medical waste poses a serious threat to health and environmental sustainability. Traditional waste processing (burning) cannot be used for B3 medical waste and is often mixed with non-B3 medical waste. This is because it potentially generates dangerous chemicals emitted into the atmosphere. Meanwhile, pyrolysis as a superior thermochemical technology is an effective solution for treating both B3 medical waste and non-B3 medical waste. The waste used in this study has good characteristics, as indicated by the low water and high fixed carbon content. The pyrolysis process yields products with economic value, such as solid, liquid, and gas products. Therefore, this study aims to determine the levels of products that can be produced from B3 and non-B3 medical waste. The results showed that rubber bands produce the highest proportion of liquid products at 44%, the highest solid products were obtained from LDPE plastic waste with a proportion of 65%, while the highest gas product was produced by mask waste at 45%. Based on the results, waste with high product yields can be used as an alternative energy source, such as gasoline, LPG, briquettes, and battery-based materials.

Pembuatan dan Pengujian Pembangkit Listrik Tenaga MikroHidro (PLTMH) Turbin Turgo Erwanto, Eka; Ridwan, Abrar; Sunaryo, Sunaryo
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1470

The construction and testing of a micro-hydro power plant (PLTMH) is one of the uses of water power sourced from irrigation channels of waste water from turbines located on the underground floor of the Koto Panjang PLTA, Kampar Regency. The construction and testing of a micro-hydro power plant by utilizing a small water discharge with the height of the irrigation channel as an energy source to rotate the turbine and generator. This study aims to increase lighting on the underground floor of the PLTA because on the lowest floor there are several points that do not yet have lighting, therefore the researcher made a micro-hydro power plant and tested how much power is obtained from the small water discharge. The study was conducted by measuring the water discharge so that it can be known how much voltage will be produced from the PLTMH that was made. The method used in this study is an experimental method, namely by making a micro-hydro power plant and testing it at that location. A micro-hydro power plant with a water discharge of 0.010 m3/s using a 12 Volt DC generator and an average turbine rotation of 243.0 Rpm can produce a voltage of 3,830 Volts. It can power one 3.8 Volt LED lamp with 2600 mAh.

PERFORMANCE OF LOW-COST SOLAR WATER HEATER Ridwan, Abrar; Abdurrahman, Ridwan; Fudholi, Ahmad
JURNAL SURYA TEKNIKA Vol. 9 No. 1 (2022): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v9i1.3761

This study investigated the performance of a low-cost solar water heater (SWH). The SWH consists of a solar collector with a simple flat plate thermosiphon and water tank. The solar collector has, a glass cover, painted black on an aluminium absorber plate, water pipes and the sides insulated. During the testing process, the temperatures in the SWH were recorded at 1-second intervals by using Advantech Software DAQ Navi Data Logger, which is connected to a laptop via USB-4718, 8-Channel Thermocouple Input Module. The results that the efficiency of the solar collector ranged from 5% to 23%, with an average of 16% at water flow rate of 0.0019 kg/s. In addition, the time required by low-cost SWH to heat the water in a tank of 20 liters to reach its maximum temperature of 48.3°C is 8 hours 36 minutes

Dynamic braking performance of a low-mass prototype vehicle under different speeds and loads Istana, Budi; Ridwan, Abrar; Sitompul, Izazul Kafitra
Jurnal Polimesin Vol 23, No 5 (2025): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i5.7414

Dynamic braking performance is well understood in conventional vehicles, but its characteristics in ultra-lightweight, energy-efficient prototype vehicles remain poorly documented, despite their growing role in energy efficiency competitions and urban mobility concepts. This study experimentally investigated stop braking performance under varying vehicle speeds and masses in a low-mass prototype vehicle (V1.0). Tests were conducted at four speed levels (10, 20, 30, and 40 km/h) and two mass configurations (135 kg and 165 kg), with each scenario repeated five times on a flat 100 m track. With an increase in speed from 30 to 40 km/h, the 135-kg configuration showed increases in braking distance of 11.14 m (133%), braking time of 1.92 s (47%), and disc pad temperature of 0.66 °C (1.5%). The 165-kg configuration showed corresponding increases of 14.21 m (152%), 3.02 s (75%), and 1.40 °C (3.3%). Across the full test range, increasing speed from 10 km/h to 40 km/h for the 135-kg configuration increased braking distance from 1.78 m to 19.5 m (+995%) and braking time from 1.63 s to 5.04 s (+209%). Increasing mass from 135 kg to 165 kg at 30 km/h increased braking distance by 0.97 m (11.6%) and braking time by 0.59 s (17.3%). Disc pad temperatures remained within a safe range, rising only from 41.1 °C to 42.5 °C (+3.4%) across the tested speeds. These quantitative findings provide critical data for optimizing braking system design in lightweight, energy-efficient prototypes, ensuring operational safety under various load and speed conditions.

Pemanfaatan Panas Buang Tungku Gasifikasi Penghasil Listrik Menggunakan Termoelektrik Sebagai Solusi Limbah Pabrik Tahu di Desa Tanah merah Kecamatan Siak Hulu Kabupaten Kampar, Provinsi Riau Abdurrahman, Ridwan; Ridwan, Abrar; Utami, Lega Putri
BATOBO: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 1 (2023): BATOBO: Juni 2023
Publisher : Jurusan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/batobo.1.1.29-35

Limbah pabrik tahu di Desa Tanah Merah, Kecamatan Siak Hulu, Kabupaten Kampar, Provinsi Riau, dapat menjadi masalah lingkungan yang signifikan. Limbah ini terutama terdiri dari panas buang yang dihasilkan selama proses produksi tahu menggunakan tungku gasifikasi. Namun, panas buang ini biasanya tidak dimanfaatkan secara efisien dan hanya terbuang sia-sia. Oleh karena itu, perlu dicari solusi yang ramah lingkungan dan berkelanjutan untuk memanfaatkan panas buang ini. Dalam penelitian ini, kami mengusulkan pemanfaatan panas buang tungku gasifikasi pabrik tahu menggunakan modul termoelektrik. Modul termoelektrik adalah perangkat yang dapat mengubah perbedaan suhu menjadi energi listrik. Dalam konteks ini, panas buang dari tungku gasifikasi akan digunakan untuk menghasilkan suhu tinggi pada satu sisi modul termoelektrik, sedangkan suhu lingkungan akan berfungsi sebagai suhu rendah pada sisi lainnya. Perbedaan suhu ini akan menciptakan gradien suhu yang akan menghasilkan potensi listrik melalui efek Seebeck dalam modul termoelektrik. Dengan menerapkan sistem ini, panas buang dari tungku gasifikasi dapat diubah menjadi energi listrik yang dapat dimanfaatkan untuk memenuhi kebutuhan listrik pabrik tahu. Selain itu, ini juga akan membantu mengurangi emisi gas rumah kaca dan dampak negatif lainnya terhadap lingkungan. Dengan memanfaatkan energi panas yang sebelumnya terbuang sia-sia, pabrik tahu dapat mengurangi penggunaan energi konvensional dan meminimalkan dampak negatif terhadap lingkungan. Penelitian lebih lanjut dan implementasi praktis perlu dilakukan untuk memastikan kelayakan dan efektivitas pemanfaatan panas buang ini dalam skala yang lebih besar.

Co-Authors -, Mintarto Adhika Widyaparaga Afdhal Afdhal Ahmad Fudholi Ahmad Kafrawi Nasution Ahmad Kafrawi Nasution, Ahmad Kafrawi Arfie I. Firmansyah Ari Pani Desvina Ari Pani Desvina Aris Fiatno Athala, Azzalya Putri Awaludin Marti Awaludin Martin Azzalya Putri Athala Budi Istana Dalilla, Faizan Erwanto, Eka Faizan Dalilla Fauzun Fauzun Firmansyah, Arfie I. Hamzah, Munawir Hartono Hartono Hartono Hartono Hery Mada Indra Paska Japri Kamaruzzaman Sopian Laras S Widara Lega Putri Utami Legisnal Hakim lobertus gunawan hasugian Mahendra, Rain Agri Majid Khan Bin Majahar Ali Majid Khan Bin Majahar Ali Mariyam Fazleena Musthafa Meka, Wahyu Muhammad Desmico Ekta W Muhammad Kunta Biddinika Muhammad Nawa Syarif Munawir Hamzah Mursyidah Umar Mursyidah Umar, Mursyidah Nasruddin - Nur Farhana Mohd Razali Rahmadeni Rahmadeni Rain A Mahendra Rezeki, Tri Nur Ridwan Abdurahman Ridwan Abdurrahman Rilnanda, Ade Sitompul, Izazul Kafitra Sunaryo Sunaryo Sunaryo Sunaryo Tri N Rezeki Tri Suyono Wahyu Meka Widara, Laras Sita Yendra, Rado Yulia Fitri Yulia Fitri

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