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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Informatika dan Teknik Elektro Terapan agriTECH Indonesian Journal of Science and Technology Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agrotek Tropika Batoboh : Jurnal Pengabdian Pada Masyarakat Jurnal Peternakan (Jurnal of Animal Science) Jurnal Kesehatan Barometer Agroteknika Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun International Journal of Electronics and Communications Systems Jurnal Agricultural Biosystem Engineering Applied Research in Science and Technology Open Science and Technology Aceh International Journal of Science and Technology Education, Language, and Arts: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering and Technological Sciences
Mareli Telaumbanua
Department Of Agricultural Engineering, Faculty Of Agriculture, Lampung University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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Pengaruh Durasi Penekanan dan Ukuran Partikel terhadap Kualitas Pelet Serbuk Gergaji Simanjuntak, Fajar Agustus; Wisnu, Febrian Kusuma; Telaumbanua, Mareli; Haryanto, Agus
Jurnal Agricultural Biosystem Engineering Vol 1, No 3 (2022): September 2022
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v1i3.6331

Abstract

This study aims to determine the effect of pressing duration and particle size on the pellet characteristics of sawdust. The study was conducted in a factorial completely randomized design using two factors. The first factor is the duration of the suppression which consists of four levels, namely 60, 120, 180, and 240 seconds. The second factor is particle size which consists of 40 mesh (fine), 30 mesh (medium), 20 mesh (coarse), and mixed. Sawdust is taken from a furniture industry in Bandar Lampung, then dried in the sun to a moisture content of about 12%, then sieved. Pellet molding was carried out with a mass of about 3 grams of material using a hydraulic press with a mold diameter of 12 mm. Sawdust is fed into the mould, then pressed by a hydraulic system at a pressure of 2 tons (172 Mpa). Parameters observed included density, moisture content, water absorption, pellet strength, pellet color, ash content and durability index. Each measurement was carried out with three replications. The results showed that the pressing duration and particle size affected the pellet characteristics. Biomass pellet made from sawdust had characteristics such as density of 0.813-0.856 g/cm3, moisture content of 8.19-12.15 %, maximum water absorption of 7.06-9.32 %, drop resistance of 99.41-99.66 %, and ash content of 1.087-2.082 %. Keywords: Density, Durability Index, Duration of Compression, Particle Size, Moisture Content.
Pemanfaatan Limbah Serat Kelapa Sebagai Bahan Tambahan Pembuatan Paving Block Rahmawati, Winda; Marcus, Patrice Kevin; Wisnu, Febryan Kusuma; Haryanto, Agus; Telaumbanua, Mareli; Sugianti, Cicih
Jurnal Agricultural Biosystem Engineering Vol 3, No 3 (2024): September 2024
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v3i3.10161

Abstract

Indonesia is one of the largest coconut producing countries in the world, Lampung Province itself has a coconut plantation area of 91.8 thousand hectares with a production of 81.9 thousand tons in 2021. One alternative of the uses of coconut fiber is as a mixing material for porous paving blocks. This study aims to make porous paving blocks with additional coconut fiber and to determine the physical characteristics of paving blocks with a mixture of coconut fiber. This study used a completely randomized design consisting of 4 treatments and 5 replications with a sample size of 40 pieces divided into destructive and non-destructive tests. The method of making paving blocks in the study was that the fiber was mixed with a mixture of cement and sand, then molded and conditioned for 28 days. The tests carried out were visual tests, water absorption tests, infiltration tests, density tests and compressive strength tests. The results of the study showed that the addition of coconut fiber to the paving block mixture affected the results of the test of the characteristics of porous paving blocks) Keywords: Coconut Fiber, Deformation, Ductile, Infiltration, Pore Space. 
Penambahan Arang Batok Kelapa pada Produksi Biogas Campuran Kotoran Ayam dan Kotoran Sapi Haryanto, Agus; Putri, Laily Rahmadani; Suharyatun, Siti; Telaumbanua, Mareli
Jurnal Agricultural Biosystem Engineering Vol 2, No 1 (2023): March 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i1.6874

Abstract

This study aims to determine the effect of adding coconut shell biochar on biogas production from a mixture of chicken manure and cow manure. The research was conducted using a batch type digester with an active volume of 2000 mL. The substrate consists of a mixture of chicken manure and cow manure with a weight ratio of 1:1 and 3:1. Biochar from coconut shells is mashed and added at a rate of 3 grams. Parameters observed included ambient temperature, initial and final pH, biogas production and methane content in biogas. The results showed that the addition of coconut shell charcoal had a negative effect which was marked by a decrease in cumulative biogas production. The highest cumulative biogas production was obtained in the treatment without the addition of biochar, both K1B0 and K2B0. Biogas from the K2B0 treatment has a higher CH4 content than those of other treatments. Keywords: Biogas Production, Methane, pH, Substrate Rasio, Temperature
PENGARUH JENIS BAKTERI PELARUT FOSFAT (BPF) DAN JENIS PUPUK FOSFAT TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN MENTIMUN (Cucumis sativus L.) Andi Setiadi; Dermiyati Dermiyati; Yohannes C Ginting; Kus Hendarto; Suskandini Ratih; Mareli Telaumbanua
Jurnal Agrotek Tropika Vol 9, No 3 (2021): JURNAL AGROTEK TROPIKA VOL 9, SEPTEMBER 2021
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v9i3.5297

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh bakteri pelarut fosfat (BPF), pupuk fosfat, dan interaksi keduanya dalam meningkatkan pertumbuhan dan produksi tanaman mentimun. Penelitian dilakukan di Laboratorium Lapang Terpadu Fakultas Pertanian Universitas Lampung. Penelitian ini menggunakan rancangan acak lengkap (RAL) faktorial yang terdiri dari 2 faktor dan masing-masing diulang sebanyak 3 kali. Faktor pertama merupakan jenis pupuk fosfat yang terdiri dari: tanpa pupuk fosfor (P0), SP-36 150 kg ha-1 (P1) dan BFA 192,85 kg ha-1 (P2). Faktor kedua merupakan jenis BPF yang terdiri dari: tanpa BPF (M0), BPF dari suspensi MOL TKKS (M1), BPF dari suspensi MOL rimpang nanas (M2), dan kombinasi BPF dari suspensi MOL TKKS dan rimpang nanas (M3). Hasil penelitian menunjukkan bahwa bakteri pelarut fosfat (BPF) tidak berpengaruh terhadap pertumbuhan dan produksi tanaman mentimun. Pupuk SP-36 menghasilkan produksi dan jumlah buah mentimun lebih baik dibandingkan dengan tanpa pupuk P yang didukung oleh peningkatan variabel bobot kering akar, bobot kering brangkasan, usia berbunga, jumlah bunga betina. BPF dari MOL TKKS dengan pupuk SP-36 memberikan pengaruh lebih baik terhadap panjang tanaman dan jumlah daun.
Rancang Bangun Kompor Biomassa Otomatis Berbasis Sensor Suhu dan Mikrokontroler Telaumbanua, Mareli; Kurniawan, Ahmad Ridho; Haryanto, Agus; Fil’aini, Raizummi; Wisnu, Febryan Kusuma; Rahmawati, Winda
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 13 No 1 (2025): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v13i1.1148

Abstract

Continuous consumption of fossil fuels can cause fuel prices to rise and potentially cause shortages. One alternative renewable energy that can replace fossil fuels is biomass pellets. The use of manual biomass pellet stoves has constraints in controlling the amount of biomass burned, the amount of heat released by the stove, combustion efficiency, safety, and wasteful use of pellets. The purpose of this study was to develop a biomass stove using an automatic control system as a substitute for gas or electric stoves. This stove has the same principle and working method as gas stoves in general, but the pellet fuel is solid. This technology controls the temperature through the integration of temperature sensors, fan blowers, screw feeders, and heat insulators automatically. The results showed that the stove temperature value with the coefficient of determination value from sensor calibration 1 was R2 = 0.9945, sensor calibration 2 obtained the value R2 = 0.9956, the R2 value in sensor calibration 3 was 0.9946, and sensor calibration 4 obtained the value R2 = 0.9927. In the system response test, the device was able to reach a temperature of 300°C in 450 to 780 seconds. Stability testing for setting points 100°C, 200°C, and 300°C were 0.98, 0.82, and 0.53, respectively. The accuracy of the device was 92%. In the execution speed test, it took 2.5 to 4 seconds for the pellets to enter the fuel furnace.
Design and Construction of Duku Sorting System Based on Size Using a Microcontroller on Conveyor Work Martinus, Martinus; Muhammad, Meizano Ardhi; Telaumbanua, Mareli; Andrianto, Rifqi Rhama; Ferbangkara, Sony
International Journal of Electronics and Communications Systems Vol. 1 No. 2 (2021): International Journal of Electronics and Communications System
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijecs.v1i2.10612

Abstract

Duku (Lansuim Domesticum Corr)fruit harvesting is generally done manually by farmers in Indonesia so that the quality of the duku fruit, especially the uniformity of size, is not considered. The impact of this harvesting is a decrease in fruit quality and a decrease in selling prices. It is necessary to develop a new sorting machine for duku so that the fruit size is accurate. This research aims to make a sorting system for duku fruit based on size using a microcontroller on conveyor work. The sorting system uses two sensors, VL53L0X and FC-51. The design has a servo actuator to separate the fruit classes. This study developed a correct sorting of duku fruit sizes up to 97.4 percent, counting accuracy up to 99.4 percent, system stability up to 96.65 percent, and transient response of 100 ms. The result of testing this tool is that the ability of the Duku fruit sorting system based on size has a stability value of 96.6 percent. The transient response obtained is 100ms. The accuracy of the perfect sorting results is 97.4 percent, and the calculation of the number of duku using the system is 99.4 percent. The conclusion is that the researchers can create a sorting system based on size using a microcontroller on conveyor work.
Development of Solar-Powered Automatic Pest Trap for Rice Cultivation Plants in Indonesia Telaumbanua, Mareli; Khotimah, Khusnul; Wisnu, Febryan Kusuma; Rahmawati, Winda; Haryanto, Agus; Fil'aini, Raizummi
Journal of Engineering and Technological Sciences Vol. 57 No. 4 (2025): Vol. 57 No. 4 (2025): August
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.4.5

Abstract

Rice is the main commodity processed into rice, as a staple food for the people of Indonesia. Pests and diseases can cause decreased production to crop failure. The method used by farmers is pest control by spraying chemical pesticides. However, chemical pesticides have serious impacts on plants, increased immunity for pests, increased chemical residues in crops that threaten human health, and environmental pollution. The objective of this study is to design an integrated high-tech trap that is effective, efficient, cost-effective, durable, safe, environmentally friendly (zero-emission), and low in operational costs, with the ultimate goal of enhancing farmers' income. This automatic pest trap embeds a microcontroller, infrared sensor, fan and solar panel. Observations were made on 4 tools, namely complete lures, yellow LED, lights and pheromones. Based on the observations, Scotinophara coarctata and Nilaparvata lugens were identified as the most commonly trapped insect pests in rice fields. The insect's fall speed was fast, namely 1 minute 4 seconds with good stability. Insect readings came in higher on the complete lure due to the combination of three lures, each of which has its own insect attraction. The effectiveness of insect capture on the complete automatic insect trap was the highest at 84.47%.
Pelatihan Pembuatan Pupuk dan Monitoring Suhu Menggunakan Alat Pembuat Pupuk Kompos Telaumbanua, Mareli; Karo-Karo, Pulung; Syah, Aminudin; Telaumbanua, Syukur; Indriyawati, Agapetalia
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 5 No. 3 (2024)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v5i3.180

Abstract

Pupuk kompos berbahan limbah pertanian/peternakan belum termanfaatkan secara optimal oleh petani/peternak. Mitra kelompok tani di Desa Rejomulyo memiliki pengetahuan dan keterampilan yang kurang dalam pembuatan pupuk kompos. Selain itu, proses pembuatan pupuk kompos yang ditandai dengan kenaikan suhu sulit dipantau. Oleh karena itu, petani memerlukan prosedur tahapan pengolahan pupuk kompos dengan monitoring suhu. Tujuan kegiatan ini adalah meningkatkan pengetahuan dan keterampilan melalui pengolahan pupuk kompos dengan menerapkan alat pembuat pupuk kompos. Metode pelaksanaan kegiatan terdiri dari sosialisasi, diskusi, tanya jawab, demonstrasi dan praktik. Evaluasi kegiatan pengabdian menunjukkan adanya peningkatan pengetahuan mitra kelompok sebesar 44,85% dan keterampilan sebesar 50,00%. Dengan demikian, pengabdian ini telah berhasil meningkatkan pengetahuan dan keterampilan mitra dalam pembuatan pupuk kompos dan aplikasi alat.
Co-Authors Adi Susilo Agus Haryanto Agus Haryanto Agus Haryanto Agustin, Stefani Silvi Ahmad Suudi Aldo Christian Alvin Fatikhunnada, Alvin Amieria Citra Gita Amieria Citra Gita Andi Setiadi Andrianto, Rifqi Rhama Anggia Indriyani Annisa Nur Rachmawaty Asil Barus Attamimi, Tahani Farhat Bambang Purwantana Bambang Purwantana Br Ginting, Daria Budianto Lanya Budianto Lanya Cicih Sugianti Cicih Sugianti Dermiyati Dermiyati Diding Suhandy Eka Yana Ekaliana Ekaliana Eko Putra Elhamida Rezkia Amien Febryan Kusuma Wisnu Fil'aini, Raizummi Fil’aini, Raizummi Gigih Forda Nama Gita, Amiera Citra Herry Wardono Huda, Zulmiftah Imam Santosa Indriyawati, Agapetalia Irza Sukmana Jordy, Abdul Rachman Juanto, Benedictus khusnul khotimah Kiromah, Isrofiatul Kurniawan, Ahmad Ridho Kus Hendarto Lilik Sutiarso Lilik Sutiarso Marcus, Patrice Kevin Martinus Martinus Martinus, Martinus Meinilwita Yulia Meizano Ardhi Muhammad Meizano Ardi Muhammad Meizano Ardi Muhammad Mohammad Affan Fajar Falah Mufidah, Zunanik Muhammad Amin Muhammad Haviz Muhammad Pijar Muhammad, Meizano Ardhi Mulyani, Yessi murwanto, bambang Novi Apratiwi Panji Kurniawan Pulung Karo-Karo Purnomo, Cahyo Eko Putri, Laily Rahmadani Ribut Eko Wahyono Ridho Nurrohmanysah Rifqi Rhama Andrianto Ristanti Ristanti Riszal, Akhmad Rizza Wijaya Sandi Asmara Saputra, Muhamad Ogas Setiawan, Wahyu Hendi Simanjuntak, Fajar Agustus Siti Suharyatun Sony Ferbangkara Sri Rahayoe Sri Waluyo Sri Waluyo Sugeng Triyono Suskandini Ratih Dirmawati Syah, Aminudin Tamrin Tamrin Telaumbanua, Syukur Telaumbanua, Syukur F Teuku Irmansyah Titin Yulianti Tri Novita Sari, Tri Novita Tri Wahyu Saputra Tri Wahyu Saputra Trisya Septiana Valentino, Fandy Warji Warji Winda Rahmawati Winda Rahmawati Winda Rahmawati Winda Rahmawati Winda Rahmawati Wisnu, Febrian Kusuma Yohannes C Ginting