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All Journal Jurnal Penelitian Saintek Rotasi Nusantara Science and Technology Proceedings Journal of Mechanical Design and Testing (JMDT)
Willie Prasidha
Department Of Mechanical And Industrial Engineering, Faculty Of Engineering, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology

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Electricity Production from Food Waste Leachate (Fruit and Vegetable Waste) using Double Chamber Microbial Fuel Cell: Comparison between Non-aerated and Aerated Configuration Prasidha, Willie
ROTASI Vol 22, No 3 (2020): VOLUME 22, NOMOR 3, JULI 2020
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.22.3.162-168

Abstract

Two double chamber microbial fuel cells with different configurations were developed to produce electricity food waste leachate and studied for 30 days. Anode and Cathode were made by uncoated carbon felt and graphite rods.  Food waste and water were incubated into the reactor. After more than 30 days, leachate with the neutral condition (pH 6.9) was collected from the leachate reactor. 500 ml leachate was used in the anode chamber and 500 ml catholyte was used in the cathode chamber. The first configuration, non-aerated MFC, the maximum OCV, maximum power density, average power density, and maximum current density were 373 mV, 25.7 mW/m2, 3.7 mW/m2, and 21.4 mA/m2 respectively. For the second configuration, aerated MFC, maximum OCV, maximum power density, average power density, and current density were 404 mV, 25.7 mW/m2, 6.1 mW/m2, and 21.4 mA/m2 respectively. Aerated MFC had higher maximum OCV and average power density than non-aerated MFC. From the study, supplying continuous dissolved air (oxygen) in the cathode chamber can produce more voltage and average power density in double chamber microbial fuel cell.
Electricity Production from Tofu Whey using Double Chamber Microbial Fuel Cell: Effect of Sodium Acetate Prasidha, Willie; Alfiansyah Taufiq, Mohammad Rais
ROTASI Vol 23, No 1 (2021): VOLUME 23, NOMOR 1, JANUARI 2021
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.23.1.55-58

Abstract

This study was aimed at evaluating the effect of sodium acetate on the performance of aerated double chamber microbial fuel cells from tofu whey. Six different mass of sodium acetate was soluted in the anode chamber (0, 1, 2, 3, 4, and 5 gr). The value of open circuit voltage (OCV) was taken to analyze the performance. A double chamber microbial fuel cell (MFC) was developed to produce electricity from tofu whey and studied for 1680 hours (70 days). Anode and cathode were made by uncoated graphite rod. After 1680 hours, the electricity production characteristics were obtained. The results show that the highest OCV (274 mV) was reached by adding 5 gr of sodium acetate in the anode chamber. Furthermore, adding 5 gr sodium acetate in the anode chamber could provide more stable OCV then other (0, 1, 2, 3, and 4 gr sodium acetate). From the study can be concluded that adding the sodium acetate in the anode chamber can provide stable and higher OCV.
Maximum Electricity Production Time from Tofu Whey using Microbial Fuel Cell Prasidha, Willie
ROTASI Vol 24, No 1 (2022): VOLUME 24, NOMOR 1, JANUARI 2022
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.24.1.16-18

Abstract

This study was aimed at evaluating the performance of double chamber microbial fuel cell from tofu whey. The value of open circuit voltage (OCV) and surrounding temperature were taken at four different time which were 6 am, 12 pm, 6 pm, and 12 am. A double chamber microbial fuel cells (MFC) with different was developed to produce electricity from tofu whey and studied for 7 days. Anode and cathode were made by uncoated graphite rod. After 7 days, the electricity production characteristics at four different time were obtained. The results show that the average maximum OCV was reached at 6 pm during the MFC operation. This study also indicated that higher surrounding temperature provide higher electricity production. The optimum surrounding temperature of this study was 31ËšC.
ELECTRICITY PRODUCTION FROM FOOD WASTE LEACHATE USING DOUBLE CHAMBER MICROBIAL FUEL CELL Willie Prasidha; Akmal Irfan Majid
Jurnal Penelitian Saintek Vol 25, No 1 (2020)
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (546.444 KB) | DOI: 10.21831/jps.v25i1.30210

Abstract

This study was aimed at evaluating the performance of non-aerated and aerated double chamber microbial fuel cells from food waste leachate. The value of open circuit voltage (OCV) and close circuit voltage (CCV) were taken to analyze power density and current density of both configurations. Two double chamber microbial fuel cells (MFC) with different configurations were developed to produce electricity from food waste leachate and studied for 30 days. Anode and catode were made by uncoated carbon felt and graphite rod. Food waste and water were incubated inside a reactor. After 30 days, the electricity production characteristics between the two configurations were obtained. Both configurations reached the same maximum power density and maximum current density but the aerated MFC showed higher performance of maximum open-circuit voltage (OCV), average power density, and current density than non-aerated MFC. The results show that the supplying continuous dissolved air in the cathode chamber resulted in higher voltage, higher average power density, and higher average current density in double chamber microbial fuel cell.
Energy profile and improvement proposal of a sawdust charcoal briquette factory Akmal Irfan Majid; Syafik Maulana; Willie Prasidha
Jurnal Penelitian Saintek Vol 27, No 1 (2022)
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jps.v1i1.48513

Abstract

This study aimed to analyze the profile of energy consumption and identify efforts to improve energy efficiency. In the present work, the evaluation was focused on the main production lines, including energy utilities sourced from electricity as well as an analysis of thermal energy-based equipment. A medium-scale charcoal plant in Yogyakarta was selected as the object of the present study to represent the characteristics of a sawdust charcoal briquette industry. Measurements of electrical current were made using a clamp meter to determine the utility of the electrical devices while an infrared thermal camera was used to determine the temperature distribution. Results of this study indicate that thermal energy has the largest proportion in the main production line. Some points of heat concentration were found which could potentially cause hazards and thermal discomfort. Ideas for improvement were also proposed qualitatively as a recommendation
Karakteristik Unjuk Kerja Mesin Diesel Menggunakan Bahan Bakar B100 dan B20 Dalam Jangka Panjang Wiliandi Saputro; Jayan Sentanuhady; Akmal Irfan Majid; Willie Prasidha; Nico Pradipta Gunawan; Thevin Yoga Raditya
Journal of Mechanical Design and Testing Vol 2, No 2 (2020): Articles
Publisher : Departemen Teknik Mesin dan Industri, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (137.135 KB) | DOI: 10.22146/jmdt.55523

Abstract

Penggunaan bahan bakar alternatif selalu berkaitan dengan dua masalah global, yaitu meningkatnya penggunaan minyak mentah dan cadangan minyak yang semakin menurun. Disamping itu, sumber energi alternatif menjadi topik yang menarik untuk terus dikaji. Indonesia adalah salah satu negara penghasil minyak kelapa sawit terbesar di dunia dengan nilai produksi mencapai 51,8 juta ton pada tahun 2019. Salah satu sumber energi alternatif yang dapat diolah dari minyak sawit adalah biodiesel. Biodiesel dapat digunakan secara langsung sebagai bahan bakar untuk mesin diesel. Tetapi biodiesel memiliki karakteristik yang berbeda dengan solar sehingga akan mempengaruhi unjuk kerja dan hal lainnya pada mesin. Oleh karena itu, penelitian ini akan menentukan pengaruh penggunaan biodiesel terhadap unjuk kerja mesin yang mencakup daya mesin, torsi, konsumsi bahan bakar spesifik (SFC), dan efisiensi termal. Bahan bakar yang digunakan adalah B100 (100% biodiesel minyak sawit) dan bahan bakar B20 (20% biodiesel minyak sawit + 80% solar) sebagai pembandingnya. Pengujian dilakukan selama 300 jam operasi, dengan beban konstan berupa lampu halogen sebesar 4 kW. Menurut hasil penelitian, mesin berbahan bakar B100 menghasilkan daya, torsi, dan efisiensi termal yang lebih rendah masing-masing sebesar 2,17%; 0,76%; dan 1,25% serta menghasilkan SFC yang lebih tinggi sebesar 14,61% bila dibandingkan dengan mesin berbahan bakar B20. Hal tersebut dikarenakan karakteristik bahan bakar B100 yang memiliki nilai kalor lebih rendah dan viskositas serta densitas lebih tinggi dibandingkan bahan bakar B20.
Characteristics of Specific Fuel Consumption on Exhaust Emissions in Diesel Engines Fueled by B20 and B100 Wiliandi Saputro; Jayan Sentanuhady; Willie Prasidha; Luluk Edahwati; Wahyu Dwi Lestari; Ndaru Adyono; Tria Puspa Sari; Ahmad Khairul Faizin; Radissa Dzaky Issafira
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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

Abstract

The dependence of Indonesian people on diesel fuel is still very high, proven by the increasing amount of diesel fuel consumption yearly. The increase in diesel fuel consumption is a severe problem that must be anticipated because diesel is a fuel that originates from fossils and is non-renewable. In addition to its limited availability, environmental issues are also a matter of concern in the use of diesel fuel because the resulting exhaust emissions can interfere with health and increase global warming. One way to overcome this is to switch from fossil fuels to biofuels, i.e., biodiesel. Although theoretically biodiesel can be used directly as a substitute for diesel fuel, there is very little research on the fuel consumption required for the exhaust emissions produced. Therefore this study aims to determine the correlation between the characteristics of specific fuel consumption (SFC) on exhaust emissions produced in diesel engines using B20 (20% biodiesel + 80% diesel) and B100 (100% biodiesel) fuel. Based on the results of the study, it was found that an increase in SFC resulted in a downward trend in carbon monoxide (CO) and carbon dioxide (CO2) emissions. In the meantime, the hydrocarbon (HC) emissions and the resulting smoke opacity increased; this was influenced by several factors such as an increase in combustion temperature, increased deposit, and component wear.
Co-Authors Ahmad Khairul Faizin Akmal Irfan Majid Alfiansyah Taufiq, Mohammad Rais Jayan Sentanuhady Luluk Edahwati Ndaru Adyono Nico Pradipta Gunawan Radissa Dzaky Issafira Syafik Maulana Thevin Yoga Raditya Tria Puspa Sari Wahyu Dwi Lestari Wiliandi Saputro Wiliandi Saputro