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All Journal Jurnal Pendidikan Teknologi dan Kejuruan JMPM (Jurnal Material dan Proses Manufaktur) JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Journal of Energy, Mechanical, Material and Manufacturing Engineering AL-JAZARI JURNAL ILMIAH TEKNIK MESIN Jurnal Tekno Insentif Jurnal Teknologi Terapan Journal of Renewable Energy and Mechanics Jurnal Teknik Mesin Indonesia KURVATEK Scientific Journal of Mechanical Engineering Kinematika MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering JTAM ROTARY Jurnal Ilmiah Teknik Mesin Poros Jurnal Vokasi Mekanika Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Vortex Jurnal Pengabdian Masyarakat Bhinneka Journal of Engineering Researcher and Lecturer AMMA : Jurnal Pengabdian Masyarakat TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Majalah Teknik Mesin
Lathifa Putri Afisna
Institut Teknologi Sumatera
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering 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 Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

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SOLAR PHOTOVOLTAIC DAN PENERAPANNYA MENJADI POWER BANK 10000 MAH Goklas Miracle Siahaan; Lathifa Putri Afisna; Fransisco Dino Permadi; Oktavirnanda Oktavirnanda P
POROS Vol. 18 No. 1 (2022): Jurnal Ilmiah Teknik Mesin Poros
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v18i1.18626

Abstract

Consumers of mobile devices expect manufacturers to produce devices that will be an efficient source of electrical energy. The battery currently used in the smartphone allows the device to operate for several hours. PowerBank  extends the operating time of the device without the need to charge it through a charger that is connected to the mains and the most important feature that determines the quality of a power bank is its capacity. This paper first analyzes the effect of the number of solar cells on the application of a 10000 mAh PowerBank. It has been shown in this study that the capacity of the 10000 mAh PowerBank can charge a series of 2, 4, and 8 solar cells. What has also been investigated is Then testing it for several types of mobile devices. The results show that using a 2, 4, and 8 solar cell circuit type can only charge handheld cell phones with a battery capacity of 2000 mAh.
PENGARUH PERBANDINGAN KOMPOSISI CAMPURAN KOTORAN SAPI DAN AIR DALAM PRODUKSI BIOGAS DENGAN TEKNOLOGI BIODIGESTER Adi Prayoga; Gilang Handi Wibowo; Muhammad Lasin; Lathifa Putri Afisna; Selamet Riski Amiludin
Jurnal Vokasi Edukasi (VomEk) Vol 5 No 2 (2023): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v5i2.430

Abstract

Biogas merupakan salah satu sumber energi terbarukan yang dapat menjawab krisis kebutuhan energi pada saat ini. Biogas dihasilkan dari proses pemecahan bahan limbah organik yang melibatkan aktivitas bakteri anaerob dalam kondisi anaerobik dalam suatu digester. Kelebihan dari biogas sendiri dibanding dengan bahan lain adalah sifatnya yang ramah lingkungan serta dapat diperbaharui. Salah satu parameter yang dapat mempengaruhi proses produksi biogas adalah tingkat pengenceran serta kandungan bahan organik didalam campuran biogas yang ada pada digester. Tujuan penelitian ini adalah untuk mempelajari sistem kerja instalasi alat pembuatan biogas dari kotoran sapi, mengetahui secara ilmiah proses produksi biogas, mengetahui tekanan gas pada digester, nyala api, suhu digester dan keasaman pH yang dihasilkan. Penelitian ini dilakukan dengan menggunakan metode eksperimental, berdasarkan percobaan yang dilakukan dengan 2 (dua) variasi (kotoran : air), yakni variasi 1:1 dan 1:2. Kemudian diukur parameter-parameter penelitian yaitu tekanan gas, nyala api, suhu digester dan keasaman pH. Pengamatan dilaksanakan selama 14 hari. Pada percobaan yang dilakukan diperoleh hasil gas metana dimana perbandingan kotoran sapi dengan air merupakan faktor penting dalam memproduksi gas metana. Dari hasil biogas pada variasi 1:1 dengan 1:2 gas yang paling banyak di hasilkan pada variasi 1:2. Pada derajat keasaman perbandingan 1:1 memiliki nilai pH netral dan 1:2 mendekati nilai pH netral. pH tersebut, berdampak pada bakteri yang menghasilkan biogas.
Efek kecepatan udara dan penambahan serbuk kayu terhadap kadar kelembapan kotoran sapi yang dikeringkan menggunakan mesin pengering tipe drum dryer Harmiansyah; Kardiansyah; Lathifa Putri Afisna; Teuku Meurah Indra Riayatsyah; Rustam Efendi
Jurnal Teknik Mesin Indonesia Vol. 18 No. 1 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i1.413

Abstract

Indonesia is a tropical country where farmers and ranchers make up the majority of the population. Cows are one form of livestock bred, and the negative impact is air pollution created by cow manure. Drying cow dung with a dryer (drum drayer) is a very effective way to remove the stink that comes from it. The goal of this study was to see how air velocity and powder administration affected moisture content and water evaporation rate when drying cow dung in a drum dryer. This study employed an experimental method, recording temperature changes every 10 minutes for 30 minutes. Moisture levels should be measured and compared before and after heating with different blower speeds (1.3 m/s, 1.7 m/s, 1.9 m/s, and 2.4 m/s). The results revealed that the rate of water evaporation differed depending on the air velocity change. At an air speed of 2.4 m/s, the highest water evaporation rate is 0.000736 kg/s, while the lowest water evaporation rate is 0.000142 kg/s. The comparison of moisture content from the drying process with and without sawdust revealed values that were not significantly different. The ultimate moisture content attained at an air speed of 2.4 m/s is 70%, which is 5% higher than the drying procedure without powder (final moisture value is 75%). However, at a speed of 1.3 m/s, the final moisture content value obtained is 90%, which is higher than the final moisture content value acquired during the drying process without powder (80%).
Implementasi Teknologi Microbubble Generator pada Pengolahan Limbah Cair Kotoran Sapi Devia Gahana Cindi Alfian; Lathifa Putri Afisna; Muhammad Syaukani; Ilham Dwi Arirohman; Harmiansyah Harmiansyah
AMMA : Jurnal Pengabdian Masyarakat Vol. 1 No. 09 (2022): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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

Abstract

Along with the development of the cattle farming industry in Indonesia, many problems arise in terms of waste management. Cow dung waste processing becomes a challenge for the cattle farm industries, especially in handling the liquid waste. Liquid waste produced by cattle farming may pose a negative impact on the health of the people living around the cattle farm if it is not managed properly. One of the efforts to reduce environmental damage due to liquid waste from the farm is by utilizing microbubble generator (MBG) technology to decompose cow dung liquid waste into environmentally friendly waste. The aeration process that occurs in cow dung liquid waste helps aerobic microorganisms to better decompose liquid waste through the addition of dissolved oxygen produced by the microbubble generator in the water. As one of our community service programs, our team came up with an initiative to transfer the know-how of the MBG-based wastewater processing system to a local cattle farm, CV Sanjaya Farm. The program implementation method is by providing training and assistance in the application of MBG technology in the processing of cow dung liquid waste. With an active participation of both our team and partner sides, the MBG technology has been installed at our partner’s locations. As a result of the training and mentoring that we delivered at the partner farm, we observed an increase in the knowledge and skills of both leadership and staff of the partner farm in overcoming the problem of liquid waste management. In addition, a tangible solution has also been built for handling liquid waste to be disposed of into the surrounding environment in a safe and non-polluting manner.
Experimental Study of The Potential for Energy Absorption and Drying Time of Coffee Beans Using a Dome Dryer Type Dryer in The Sukmailang Area of Pesawaran Regency Yopi Rusdian Santoso; Lathifa Putri Afisna; Muhammad Syaukani; Gita Johannes Saragih
Journal of Renewable Energy and Mechanics Vol. 6 No. 02 (2023): REM VOL 6 NO 02 2023
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2023.vol6.no02.10479

Abstract

The traditional drying method has many weaknesses, namely it is very dependent on the weather, so that drying takes a long time. Traditional drying methods result in frequent contamination of dust, dirt, insects, and if wet they are prone to moss growth due to delays in drying during cloudy or rainy weather. This study designed a coffee bean dryer with electric power which is the result of converting solar energy with the help of photovoltaic which is first stored in the battery. The main components of this tool are: drying chamber, drying roof, tray, thermostat, heating element, this test is carried out to determine changes in seed moisture content, required power and efficiency. The temperature is set at 50°C with a fan speed of 3m/s. The fastest decrease in water content occurred in the mass of 1 kg coffee bean samples starting on June 22, 2022 from 28.5% water content to 12% moisture content. Meanwhile, the longest decrease in the water content of coffee beans was at a mass of 2 kg coffee beans on June 24, 2022, the initial water content of coffee beans was 29.3% to 13.2%. The greater the mass of the coffee beans to be dried, the greater the time required to dry the coffee beans using a dome dryer. The maximum power is in the Sukmailang area, Pesawaran district which has a plateau as high as 1200 meters above sea level (MDPL) with an average power of 11.38 Watt. The highest power is produced at 12:00 WIB with a value of 16.49 Watts. The use of solar panels in the Sukmailang area, Pesawaran Regency which has a plateau as high as 1200 (MDPL) is still not effectively utilized because the results obtained have an average efficiency value of 2.22%
Program Sosialisasi Pengolahan Kotoran Sapi Menjadi Biogas Di Sanjaya Farm, Lampung Lathifa Putri Afisna; Devia Gahana Cindi Alfian; Ilham Dwi Arirohman; Muhammad Syaukani; Achmad Gus Fahmi
AMMA : Jurnal Pengabdian Masyarakat Vol. 2 No. 10 : November (2023): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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

Abstract

Unmitigated cow dung waste possesses the capacity to induce pollution and environmental degradation, hence potentially compromising air quality and the well-being of the neighboring population. The objective of this Community Service initiative is to enhance community understanding and promote the adoption of biogas technology as a sustainable energy alternative within livestock communities in the Sukabumi district of Lampung Province. The approach of socialization and direct instruction employed in this study involves educating farmers and local populations on the effective treatment of cow dung waste, thereby mitigating environmental degradation and harnessing waste as a valuable energy resource. Pretest and posttest questionnaires were administered to assess participants' comprehension levels and evaluate the outcomes of the socialization process. According to the responses obtained from the questionnaires completed by the participants, a significant majority (90%) acknowledged the existence of environmental consequences associated with untreated cow dung. Furthermore, an overwhelming majority (99%) expressed agreement with the idea of converting cow dung into biogas. Additionally, a substantial proportion (90%) of the participants reported an enhanced comprehension of the process involved in converting cow dung into biogas. This phenomenon demonstrates that the community's view necessitates the integration of technology in order to address their issues. Hence, the utilization of suitable technology is imperative for the community, particularly cattle farmers, to effectively manage the disposal of cow dung waste, which significantly affects the environment. The utilization of biogas technology has the potential to mitigate this impact and offer alternative energy alternatives that are more ecologically sustainable for the local community.
Pemanfaatan Kotoran Sapi Menjadi Biogas dalam Mendukung Green Environment Farm pada CV Sanjaya Farm Afisna, Lathifa Putri; Guguk, Kardo Raja; Qalbina, Fitrah; Syaukani, Muhammad; Paundra, Fajar
TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Vol 1 No 2 (2021): TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M), Institut Teknologi Sumatera, Lampung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/teknokreatif.v1i2.516

Abstract

Limbah kotoran sapi di CV Sanjaya Farm masih banyak menimbulkan masalah bagi pihak peternak maupun warga sekitar. Hal ini dikarenakan pemanfaatan limbah kotoran sapi yang belum maksimal sehingga menimbulkan penumpukan di area kandang dan terjadi polusi udara yang mengganggu warga sekitar. Salah satu alternatif pemanfaatan limbah kotoran sapi adalah sebagai bahan biogas. Hasil dari diskusi dengan pihak peternak maka dibuat reaktor skala rumah tangga untuk mengolah limbah kotoran sapi menjadi biogas menggunakan reaktor portable dengan sistem semi kontinu. Pemanfaatan biogas dapat digunakan oleh peternak dan warga sekitar sebagai pengganti LPG untuk memasak dan menjadi contoh peternakan yang dapat pengelolaan kotoran sapi menjadi biogas.
Adsorbent-based biogas quality analysis through purification process Afisna, Lathifa Putri; Verdia, V Daniel; Syaukani, Muhammad; Saputra, Aprizal
Jurnal Pendidikan Teknologi Kejuruan Vol 5 No 3 (2022): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v5i3.27623

Abstract

Biogas is a raw material utilized to produced biogas. Biogas is renewable energy source produced by the anaerobic activity of organic matter through the fermentation process. Quality of biogas is determined by its main composition, such as methane (CH4). In addition, the composition of biogas also contains impurities such as unburnt carbon dioxide (CO2) so that it reduces the heating value, hydrogen sulfide (H2S) and water vapor (H2O) which are corrosive as well as Nitrogen (N2). Adsorption method on the impurity compositions can be used to improve biogas quality. This research used a column purifier containing four adsorbents in the form of calcium hydroxide Ca(OH)2, iron gram (Fe2(O3)), zeolite and activated carbon with three volume variations 600 cm3, 900 cm3 and 1200 cm3. The results of biogas testing using gas chromatography showed that the best quality obtained from the 1200 cm3 volume of adsorbent. Methane content was increased up to 17.985% and the impurity gases were decreased, such as carbon dioxide in as much as 18.15%, hydrogen sulfide and water vapor in as much as 0.182%. The heat produced by unpurified biogas was 1518.312 kJ/m3 and the highest heating value after purification was 2108.22 kJ/m3. The biogas combustion resulted in a dominant blue flame color.The most optimum effectiveness of the technology resulted in an increase of the methane content up to 64.275%. Based on this research, the utilization of column purifier with the adsorption method was able to improve the quality of biogas
UJI PERFORMA MOTOR DIESEL SATU SILINDER GENERATOR SET MENGGUNAKAN CAMPURAN BAHAN BAKAR CRUDE PALM OIL-DEXLITE DENGAN PENAMBAHAN BIOADITIF ALAMI Akasah, Ahmad; Prahmana, Rico Aditia; Riayatsyah, Teuku Meurah Indra; Afisna, Lathifa Putri; Syaukani, Muhammad
SINERGI POLMED: Jurnal Ilmiah Teknik Mesin Vol. 5 No. 1 (2024): Edisi Februari
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/sinergipolmed.v5i1.1478

Abstract

Penggunaan bahan bakar alternatif telah banyak dilakukan di Indonesia bahkan dunia sebagai upaya penghematan bahan bakar yang semakin menipis. Selain itu, memanfaatkan potensi ketersediaan minyak nabati yang melimpah seperti minyak sawit di Indonesia juga merupakan usaha yang efektif untuk dilakukan sebagai subtitusi bahan bakar fosil. Penelitian ini dilakukan untuk mengevaluasi perbandingan yang dihasilkan oleh unjuk kerja mesin diesel satu silinder dengan bahan bakar dexlite murni dan campuran Crude Palm Oil (CPO) + dexlite yang ditambahkan bioaditif. Persentase campuran (CPO) + dexlite mulai dari 10%-50 % dan ditambahkan 0,1 % bioaditif ditambahkan pada setiap campuran dengan variasi putaran mesin dari 1200 rpm hingga 2000 rpm dengan interval 200 rpm dan beban konstan 1500 watt. Berdasarkan hasil pengujian dan perhitungan matematis diperoleh bahwa pengaruh penambahan bioaditif menghasilkan nilai unjuk kerja yang cukup baik pada hampir di setiap campuran bahan bakar CPO + dexlite yang ditandai dengan selisih nilai unjuk kerja antara campuran CPO + dexlite dan dexlite murni yang berkisar antara 0 % - 15,50 % Adapun nilai torsi dan Brake Mean Effective Pressure (BMEP) paling tinggi didapatkan dari campuran 20 % CPO + dexlite sebesar 5.264 N.m dan 183,667 kPa di putaran 2000 rpm sedangkan nilai Spesific Fuel Consumption (SFC) terendah dan efisiensi termal tertinggi berada pada campuran 30 % CPO + dexlite pada putaran 2000 rpm sebesar 0,510 kg/kW.jam dan 16,415%.
Analysis of the difference in biogas volume between continuous and semi-continuous systems Afisna, Lathifa Putri; Rahadi, Bagas Nugroho Jati
Journal of Engineering Researcher and Lecturer Vol. 1 No. 1 (2022): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (284.417 KB) | DOI: 10.58712/jerel.v1i1.5

Abstract

The increasing demand for energy, driven by population growth and reduced sources of oil reserves, puts pressure on every country to produce and use renewable energy as a substitute. One of the alternative energy sources is biogas, which is produced using EM4 bacteria that balance microorganisms. In this study, microorganism inoculants consisting of 90% Lactobacillus, produced from cow dung, were accommodated in an HDPE plastic container with a volume of 1 m3. Data collection was carried out from the first to the fourteenth day, with pressure data retrieved using a pressure gauge, temperature data retrieved using a thermometer gun, and the volume of biogas measured using an Arduino-based flow meter. The study found that a 1x1 meter HDPE polymer container can accommodate a maximum biogas volume of 208.12 liters. In the non-continuous system, the volume of biogas produced is not stable. The total volume of biogas produced before going through the filter for 14 days was 1075.12 liters with an average volume of 76.79 liters/day, while the total volume of biogas that had been through the filter for 14 days was 995.71 liters with an average volume of 71.12 liters/day.
Co-Authors Achmad Gus Fahmi Adi Prayoga Adimas, Fransiskus Adryansyah, Rizky Sultan Afriansyah, Aidil Ahmadien, Ichwan Kurnia Aji Suwito Akasah, Ahmad Anugrah, Galang Arirohman, Ilham Dwi Azriel Windiarto Deendarlianto Devia Gahana Cindi Alfian Dicky Aufa Mahesha Dicky J. Silitonga Eko Pujiyulianto Fadillah Ramadhani Faturrizky Rakha Yudanta Fellando Martino Nugroho Fitrah Qalbina Fransisco Dino Permadi Gilang Handi Wibowo Gita Johannes Saragih Goklas Miracle Siahaan Guguk, Kardo Raja Harianja, Martua Jaya Harmiansyah Heni Pornawati Hidayatullah, M Taufik Indarto Indarto Irfan Dafa Denara Isak, Rabin Kardiansyah Krisna Pratama Wibisono M.Riyan Kaspari Maharani, Ajeng Meha, Gabriel Mufidah, Zunanik Muhammad Lasin Muhammad Syaukani Muhyi, Abdul Ningsih, Wulan Nurullah, Fajar Perdana Oktavirnanda Oktavirnanda P Pasaribu, Frans Winner Paundra, Fajar Prahmana, Rico Aditia Pujiyulianto, Eko Putra Andi Kolala Rahadi, Bagas Nugroho Jati Ramadhan, Ahmad Fikri Ramadhanty, Nabila Riayatsyah, Teuku Meurah Indra Rizky Faesal Sadikin Rodian, Afiko Rori Zarhimsyah Ruly Davisca Pratama Rustam Efendi Ruzaki Fatra Jaya SABAR Saputra, Aprizal Selamet Riski Amiludin Shintha Sarmila A.S Yahya Sindhu, I Gede Pande Naraya Siregar, Ilham Ramadhan Sitorus, Jhonatan Jufrianto Sugatra Dwi Atmaja Supratman, WR Syah, Muhammad Aksel Teuku Meurah Indra Riayatsyah Theodorus Rendy Prasetya Verdia, V Daniel Vicky F Sanjaya Wibawa Endra Juwana Wibawa Endra Juwana Yopi Rusdian Santoso