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Karakteristik Sisa Slurry pada Produksi Biogas Berbahan Kotoran Sapi Harmiansyah Harmiansyah; Ruly Davisca Pratama; Lathifa Putri Afisna; Muhammad Syaukani; Rustam Efendi
JMPM (Jurnal Material dan Proses Manufaktur) Vol 6, No 2 (2022): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v6i2.16175

Abstract

Jumlah masyarakat Indonesia setiap tahun mengalami peningkatan, peningkatan jumlah masyarakat akan mengakibatkan meningkatnya kebutuhan konsumsi energi seperti bahan bakar untuk memasak sehingga dibutuhkan energi alternatif yang berkelanjutan yang mampu memenuhi kebutuhan konsumsi energi. Energi alternatif yang dapat digunakan oleh masyarakat sebagai bahan bakar pengganti bahan bakar konvensional untuk memasak adalah biogas. Biogas merupakan energi alternatif berfasa gas yang dihasilkan dari kotoran hewan sehingga dapat diperbarui (renewable) secara berkelanjutan, biogas termasuk energi yang ramah lingkungan dan tidak beracun. Produksi biogas memiliki sisa slurry yang dapat mencemari lingkungan, diperlukan mengkarakterisasi sisa slurry pada produksi biogas berbahan kotoran sapi. Penelitian ini menggunakan perbandingan campuran air dan kotoran sapi sebesar 1: dengan menggunakan jenis reaktor tangki 1000 liter, pada saat produksi biogas dilakukan pengukuran tekanan biogas, volume slurry, pengukuran temperatur, dan pengukuran pH. Data yang didapatkan akan dilakukan analisis karakteristik sisa slurry pada biogas. Pada hasil penelitian ini didapatkan volume slurry selama produksi yaitu 900-980 liter dengan nilai pH rata-rata 6-7, hasil unsur hara sisa slurry cair pada penelitian ini belum dapat langsung digunakan sebagai pupuk cair organik perlu ditambahkan substrat lainnya agar dapat menaikkan unsur hara N, P, dan K yang terkandung pada sisa slurry cair tetapi untuk sisa slurry padat dapat digunakan sebagai pupuk kompos karena telah memenuhi standar kualitas pupuk kompos. The number of Indonesian people is increasing every year, and an increase in the number of people will increase the need for energy consumption such as fuel for cooking so sustainable alternative energy is needed that can meet energy consumption needs. The alternative energy that can be used by the community as a substitute for conventional fuel for cooking is biogas. Biogas is alternative energy in the gas phase produced from animal waste so that it can be renewed sustainably, biogas is environmentally friendly and non-toxic energy. Biogas production has residual slurry that can pollute the environment, it is necessary to characterize the remaining slurry in biogas production made from cow dung. This study uses a mixture of water and cow dung ratio of 1: using a 1000 liter tank reactor type, at the time of biogas production, biogas pressure, slurry volume, temperature measurement, and pH measurements are measured. The data obtained will be analyzed for the characteristics of the residual slurry in biogas. In the results of this study, the volume of slurry during production was 900-980 liters with an average pH value of 6-7, the results of the remaining nutrients from the liquid slurry in this study could not be directly used as organic liquid fertilizer, it was necessary to add other substrates to increase the nutrients. N, P, and K are contained in the remaining liquid slurry but the remaining solid slurry can be used as compost because it meets the quality standards of compost fertilizer.
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

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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%
The Effect of Pressure Variations on the Characteristics of Coconut Shell Based Briquettes Using Tapioca Starch Adhesive Devia Gahana Cindi Alfian; Marone J Tambunan; Fajar Paundra; Dicky J Silitonga; Lathifa Putri A; Muhammad Syaukani
ROTASI Vol 25, No 3 (2023): VOLUME 25, NOMOR 3, JULI 2023
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.25.3.23-32

Abstract

The very limited availability of energy on this planet is one of the main problems that concerns almost all countries. The presence of emergency energy indicates that energy usage is very high. Therefore, encouraging the use of new and sustainable energy sources is of utmost importance. Biomass energy can be the answer to overcoming the limitations of decreasing fossil assets, especially through the production of charcoal briquettes. Biomass energy is derived from plants or easily traceable natural materials that are abundant, such as wood waste, rice husks, bagasse, and coconut shells. Coconut shells, for example, can be a primary ingredient for making charcoal briquettes, using tapioca flour or starch as an adhesive. The briquettes can be produced using pressure variations of 50 kg/cm², 60 kg/cm², and 70 kg/cm², with a drying temperature of 100°C for 3 hours. The recommended ratio for making charcoal briquettes is 3 parts coconut shell to 1 parts tapioca flour adhesive. The purpose of this study is to compare the briquettes produced with coconut shell and tapioca flour adhesive to the SNI Briquette standard No.1/6235/2000. For the conducted tests, the results were as follows: the water content was 6.06%, the ash content was 5.9695%, the carbon content was 43.5946%, and the calorific value was 34,182.6808 calories. Additionally, the substance score yield was 26.845%, and the combustion rate was 0.12179 g/minute.
Experimental Investigation of The Heat Transfer Characteristics of Hybrid Nanofluid Al₂O₃CuO-Distilled Water with The Variation of Concentration Ratios Devia Gahana Cindi Alfian; Nicholas Binsar Pandapotan; Muhammad Syaukani; Dicky J. Silitonga; Devy Setiorini Sa’adiyah; Taurista Perdana Syawitri
Jurnal Tekno Insentif Vol 17 No 1 (2023): Jurnal Tekno Insentif
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah IV

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36787/jti.v17i1.940

Abstract

Abstrak Panas berlebih yang terjadi pada CPU (Central Processing Unit) komputer dapat menyebabkan penurunan kinerja komputer. Penggunaan fluida pendingin yang diaplikasikan pada perangkat waterblock dapat membantu penurunan temperatur panas berlebih. Salah satu fluida pendingin yang dapat digunakan pada waterblok adalah fluida pendingin jenis nanofluida. Nanofluida merupakan fluida kerja yang mengandung nanopartikel dan fluida dasar untuk dialirkan pada perangkat pengujian. Penelitian ini dilakukan untuk mengetahui karakteristik perpindahan panas dari perangkat uji waterblock dengan menggunakan variasi perbandingan konsentrasi 25% Al2O3: 75% CuO, 50% Al2O3: 50% CuO, 75% Al2O3: 25% CuO dan fraksi volume 0,3% dengan komposisi yang terdiri dari nanofluida Al2O3-CuO/Air Distilasi. Metode pembuatan nanofluida dilakukan dengan proses sonikasi selama 4 jam. Berdasarkan hasil penelitian menunjukkan penurunan temperatur heater paling signifikan ditunjukkan pada hybrida nanofluida dengan perbandingan 75% Al2O3 : 25% CuO sebesar 24,1oC dengan debit 1 liter/menit, sedangkan pada air distilasi penurunan temperatur heater tertinggi ditunjukkan oleh flowrate 1,9 liter/menit 3,4oC. Besarnya nilai koefisien perpindahan panas tertinggi ditunjukkan pada variasi 75% Al2O3 : 25% CuO pada rentang Bilangan Reynolds 41,9-113,7 dengan nilai tertinggi sebesar 345.798 W/m2ᵒC. Hasil pengujian menunjukkan bahwa penggunaan hibrida nanofluida dapat mengurangi temperatur lebih baik daripada air distilasi. Abstract Excessive heat that occurs in the computer's CPU (Central Processing Unit) can cause a decrease in computer performance. Cooling fluid applied to the waterblock device can help reduce overheating temperatures. One of the cooling fluids used in waterblocks is the cooling fluid of the nanofluid type. Nanofluid is a working fluid that contains nanoparticles and base fluid to flow on the testing device. This research was conducted to determine the heat transfer characteristics of the waterblock test device using variations in the concentration ratio of 25% Al2O3 : 75% CuO, 50% Al2O3 : 50% CuO, 75% Al2O3 : 25% CuO and a volume fraction of 0.3% with the same composition. consists of nanofluid Al2O3-CuO/Distilled Water. The method of making nanofluids is done by sonication process for 4 hours. Based on the study's results, the most significant decrease in heater temperature was shown in nanofluid hybrids with a ratio of 75% Al2O3 : 25% CuO of 24.1oC with a discharge of 1 liter/minute. In contrast, the highest decrease in heater temperature in distilled water was shown by a flow rate of 1.9 liters/minute 3.4oC. The highest value of the heat transfer coefficient is shown in the variation of 75% Al2O3 : 25% CuO in the Reynolds number range of 41.9-113.7 with the highest value of 345,798 W/m2ᵒC. The test results show that nanofluid hybrids can reduce temperature better than distilled water.
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

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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.
Desain dan Analisis Mesin Press Komposit Kapasitas 20 Ton Muhammad Syaukani; Fajar Paundra; Fitrah Qalbina; Ilham Dwi Arirohman; Putty Yunesti; Sabar Sabar
Journal of Science, Technology, and Visual Culture Vol 1 No 1 (2021): Juli 2021
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

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Abstract

Composite is a combination of several or more different materials, which produce better properties than their composition properties. The process of making composites can be done with a pressing method which can reduce voids. This pressing method can use a hydraulic press machine. This study aims to design and analyze a hydraulic press machine with a capacity of 20 tons. The design process begins with designing a 3D model using Solidwork Software. Numerical simulation using the finite element method by providing several variations in pressure loads ranging from 5-20 MPa. The results of the analysis show that the maximum von Mises stress is 79.70 MPa with a maximum deformation of 0.0176 mm and the smallest value of safety factor is 2.595. Based on these results, the press machine design is claimed to be safe to operate.
Pengaruh Suhu Pada Pengukuran Jarak Menggunakan Sensor Ultrasonik SR04/05 Berbasis Instrumentasi Maya Sabar Sabar; Duwi Hariyanto; Kisna Pertiwi; Handoyo Handoyo; Sastra Kusuma Wijaya; Zunanik Mufidah; Fajar Paundra; Muhammad Syaukani
Journal of Science, Technology, and Visual Culture Vol 1 No 1 (2021): Juli 2021
Publisher : Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera

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Abstract

Penelitian ini menjelaskan tentang bagaimana pengaruh suhu pada perambatan gelombang ultrasonik di udara. Hal ini berkaitan dengan verifikasi keakuratan jarak pengukuran sensor ultrasonic sebagai alat ukur. Sensor yang digunakan dalam instrumentasi maya berupa sensor ultrasonik SR 05/04 sebagai sensor pengukur jarak dan sensor suhu LM35 digunakan sebagai acuan untuk mengukur suhu lingkungan. Tujuan penelitian ini adalah memverifikasi apakah kecepatan gelombang utrasonik di udara berpengaruh terhadap perubahan suhu serta mempengaruhi pengukuran jarak. Pada penelitian ini didapatkan hasil rata-rata nilai simpangan standar deviasi pengukuran jarak terkoreksi suhu adalah 0,114 sedangkan pengukuran jarak tanpa terkoreksi suhu adalah 0,1075. Hal ini menunjukan bahwa kenaikan perubahan suhu walaupun 1°C dapat mempengaruhi sensor ultrasonik dalam mengukur jarak. Secara umum instrumentasi maya mampu bekerja dan membaca besaran sensor-sensor serta melakukan perhitungan dan menampilkan data dengan sangat baik.
Development of CFD simulation model of earth air heat exchanger for space cooling of a 36 M2 house in tropical climate Banda Aceh, Indonesia Sarwo Edhy Sofyan; Khairil Khairil; Zhafran Maulana; Akram Tamlicha; Jalaluddin Jalaluddin; M. Syaukani
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3692

Abstract

The global warming makes the ambient temperature hotter and greater efforts are made to reach a comfortable temperature. The continuous use of air conditioners that consume electricity is also unsustainable for the surrounding environment. Several studies on thermal comfort have been conducted by various researchers. Earth-air heat exchangers (EAHE) with air-working fluids can be used as a passive contribution to reduce building energy requirements for heating or cooling purposes. It should be noted that there is very little information in the literature on the development of a CFD (Computational Fluid Dynamic) simulation model of an EAHE for space cooling of a 36 m2 house in a tropical climate, such as Banda Aceh, Indonesia. Therefore, this study aims to examine the performance of EAHE with several variations in design parameters, such as pipe length, pipe diameter, number of pipe bends, and the type of soil where the EAHE is installed, as well as the thermal regime of a 36 m2 house either with or without the use of EAHE. The simulation in this study was conducted with CFD ANSYS Fluent software. The inlet air temperature of EAHE was set to be the same as the ambient air temperature, namely 31.4oC. The simulation results reveal that for variations in pipe length, the highest drop in outlet air temperature was yielded by the 47 m pipe length, which is 26.8°C. In which an increase in pipe length causes a decrease in air outlet temperature. The variation in pipe diameter does not significantly affect the outlet air temperature. Where the average air temperature drop at the EAHE exit is 0.046oC. The variation in number of turns shows that the drop in outlet air temperature is identical, namely 28.2°C, despite the fact that their pressure drop values are different. In addition, it was found that the performance of EAHE buried under different types of soil is distinct. The highest drop in outlet air temperature was generated when the EAHE was buried in silty soil, namely 26.1°C. A case study on a 36 m2 house shows that the utilization an underground heat exchanger can reduce the house’s indoor temperature by 2°C, with an average house temperature of 30.4°C compared to that with a natural ventilation.
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.
Co-Authors Abdi Hanra Sebayang Achmad Gus Fahmi Aditia Prahmana, Rico Akasah, Ahmad Akram Tamlicha Alfian, Devia G. C Amalya, Wulan Ammar, Naufal Andi Kolala, Putra Anugrah, Galang Arirohman, Ilham Dwi Atmaja, Muhammad Setya Chaniago, Noverto Zhorif Devia Gahana Cindi Alfian Devy Setiorini Sa’adiyah Dicky J. Silitonga Duwi Hariyanto Eko Pujiyulianto Fajar Paundra Fajar Paundra Ferdaus, Ferman Fikri, Muhammad Luqman Saiful Fitrah Qalbina Gahana Cindi Alfian, Devia Gita Johannes Saragih Guguk, Kardo Raja Handoyo Handoyo Harmiansyah Hendrarsakti, Joneed Hidayatullah, M Taufik Iqbal Mahesa Irza Sukmana Jalaluddin Jalaluddin Kardo Rajagukguk, Kardo Kenedi, Akmal Afif Khairil Khairil Khoiri, Rizky Kisna Pertiwi Kolala, Putra Andi Kurniawan, Medy Lathifa Putri A Lathifa Putri Afisna Marone J Tambunan Mufidah, Zunanik Muhyi, Abdul Naimah, Khoirun Nanda Syanur, Farid Nicholas Binsar Pandapotan Nurullah, Fajar Perdana Paundra, Fajar Perdana Nurullah, Fajar Prabowo Prabowo Prahmana, Rico Aditia Pujiyulianto, Eko Pujiyuliyanto, Eko Putra, Aditya Septian Putty Yunesti Rahmat Susanto Riayatsyah, Teuku Meurah Indra Rojikin, Setiyo Rojikin, Setyo Ruly Davisca Pratama Rustam Efendi Sabar Sabar Sabar Sadono, Fajar Sidik Saputra, Aprizal Sarwo Edhy Sofyan Sastra Kusuma Wijaya Siregar, Ilham Ramadhan Styawati Syah, Muhammad Aksel Taurista Perdana Syawitri, Taurista Perdana Verdia, V Daniel Wibowo, Gilang Handi Wijaya, Muhammad Hario Yopi Rusdian Santoso Yudi Kurniawan Yunasdi, Hamda Zhafran Maulana