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Analisis Kinerja Dome Solar Dryer Untuk Pengeringan Kopi Di Desa Karang Sidemen Kabupaten Lombok Tengah Ridho, Rosyid; Khalil, Fakhrul Irfan; Saputra, Oki; Widhiantari, Ida Ayu; Puspitasari, Isnaini; Zulfikar, Wahyudi; Antesty, Sella; Afriana, Tina; Anugerah, M. Titan; Yusuf, Ahmad Rahman
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 2 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i2.735

Abstract

Coffee drying is a crucial stage that influences the final product's quality and flavor. This process must be performed correctly to maintain the quality of the coffee beans and prevent mold growth. This study aims to compare two coffee drying methods, using a Solar Dome Dryer and direct sun drying. The research was conducted in Karang Sidemen Village, Central Lombok, using 100 kg of coffee beans, divided into two groups of 50 kg each for the two drying methods. The results showed that both methods successfully reduced the moisture content to 0%, but the drying with the Solar Dome Dryer was faster (4,320 minutes) compared to direct sun drying (4,380 minutes). The Solar Dome Dryer maintained a more stable temperature (50-60°C) and produced a more consistent drying rate, making it more efficient in preserving the quality of the coffee beans and preventing microbial contamination. This study recommends the use of Solar Dome Dryer for coffee drying in areas with high humidity and variable weather conditions.
Rancang Bangun Sistem Pendingin Air Nutrisi Berbasis Peltier untuk Optimasi Pertumbuhan Tanaman Hidroponik Saputra, Oki; Abdullah, Sirajuddin H.; Sumarsono, Joko; Priyati, Asih; de Side, Gagassage Nanaluih; Putra, Guyup Mahardhian Dwi; Setiawati, Diah Ajeng; Amaliah, Wenny; Dewi, Endang Purnama; Nurrohman, Reza Kusuma; Zamzami, Muhammad Ilham; Sani, Nurwan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 2 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i2.856

Abstract

High ambient temperatures inside tropical greenhouses can significantly raise nutrient solution temperatures in vertical hydroponic systems, disrupting nutrient uptake and reducing plant productivity. This study focuses on the design and development of a nutrient cooling system (chiller) using two TEC1-12706 thermoelectric modules (Peltier) arranged in series to enhance heat dissipation performance. The nutrient solution is pumped from the reservoir to the cooling chamber using a 12 V DC pump and recirculated in a closed-loop configuration. The chiller system is fully automated, controlled by two DH48S digital timers operating simultaneously: one activates Peltier 1, while the other controls Peltier 2 via the NC output (5 minutes) and the pump via the NO output (30 seconds), enabling alternating programmed cooling and circulation. The entire chiller unit is active only from 08:00 to 18:00 WITA using a KG316T programmable timer, corresponding to peak thermal stress hours inside the greenhouse. Results showed that despite greenhouse temperatures reaching up to 39.4 °C with relative humidity dropping to 47.6%, the chiller system maintained nutrient solution temperatures within the optimal 27–30 °C range. This design proved effective in reducing and stabilizing nutrient temperature under high heat microclimates. With its simple, automated, and energy-efficient architecture, the chiller system offers a promising solution for small-scale vertical hydroponics and greenhouse-based urban farming in tropical regions.
Edukasi Standar Kemasan, Label, dan PIRT sebagai Upaya Peningkatan Daya Jual Produk Pangan Masyarakat Pawestri, Setyaning; Perdhana, Firman Fajar; Handito, Dody; Pertiwi, Made Gendis Putri; Sinaga, Yesica Marcelina Romauli; Saputra, Oki; Fuadi, Mi’raj; Antesty, Sella; Amaliyah, Wenny; Yasa, I Wayan Sweca; Utama, Qabul Dinanta; Unsunnidhal, Lalu; Rasyda, Riezka Zuhriatika; S., Ince Siti Wardatullatifah
Alamtana: Jurnal Pengabdian Masyarakat UNW Mataram Vol 4 No 3 (2023): Edisi Desember 2023
Publisher : LPPM UNIVERSITAS NAHDLATUL WATHAN MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jaltn.v4i3.1894

Abstract

Pemasaran produk-produk yang dihasilkan masyarakat wirausaha Dusun Rangsot Timur, Kabupaten Lombok Utara belum mampu menembus pasar yang lebih luas karena kemasan dan label yang belum sesuai standar serta belum dimilikinya SPPIRT. Program pengabdian kepada masyarakat ini bertujuan untuk melakukan edukasi standar kemasan, label, dan PIRT kepada masyarakat wirausaha produk pangan di Dusun Rangsot Timur. Program dijalankan menjadi 3 (tiga) tahapan, meliputi studi pendahuluan, kegiatan edukasi, dan evaluasi. Metode pendekatan yang ditempuh adalah metode partisipatif. Instrumen evaluasi yang digunakan adalah angket pre-test dan post-test menggunakan Skala Likert (skor 1-4). Ketercapaian program pengabdian kepada masyarakat ditandai dengan terlaksananya keseluruhan tahapan program dan adanya peningkatan pengetahuan peserta program terhadap materi edukasi. Terdapat peningkatan pengetahuan peserta program tentang standar kemasan, label, dan PIRT dari kriteria sedang (68,95%) menjadi tinggi (80,08%) melalui kegiatan edukasi yang telah dilaksanakan. Terlaksananya program ini perlu diikuti kegiatan tindak lanjut oleh peserta bersama dengan pihak terkait untuk memperbaiki kemasan dan mengusahakan kepemilikan SPPIRT
Physical Characteristics of Bamboo and Aren’s Midrib Crafts Waste as Hydroponic Growth Media Amaliah, Wenny; Dewi, Endang Purnama; Saputra, Oki
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6483

Abstract

The critical aspect of planting media is providing oxygen to the root; hence, the growing media should have sufficient porosity for air circulation for the plants, especially the root, and be able to store water and air. Krei craft waste from bamboo and aren’s midrib can be used as hydroponic growing media. This study aims to determine the physical characteristics of craft waste from bamboo and aren’s midrib as hydroponic growing media. The characteristics of hydroponic growing media from bamboo and aren’s midrib waste include water content, bulk density, porosity, and water holding capacity (WHC). The results of this study indicated that the values of water content, bulk density, porosity, and water holding capacity (WHC) of bamboo were 9.94%, 0.215 g/cm3, 81.6%, and 172%, and aren’s midrib were 10.07%, 0.241 g/cm3, 77.0%, and 241%, respectively. According to these results, it can be concluded that craft waste from bamboo and aren’s midrib is suitable as a hydroponic planting media.
Co-Authors Abdullah, Sirajuddin H. Afriana, Tina Amaliah, Wenny Amaliyah, Wenny Antesty, Sella Anugerah, M. Titan Aries Saifudin Asih Priyati Bambang Edison De Side, Gagassage Nanaluih Dewi, Endang Purnama Diah Ajeng Setiawati, Diah Ajeng Dody Handito, Dody Eko Fadilah, Muhamad Ilham Fakhrul Irfan Khalil Fuadi, Mi’raj Guyup Mahardhian Dwi Putra Joko Sumarsono Kusuma Nurrohman, Reza Mita Sari Ningsih Mi’raj Fuadi Nehru Nehru Nurul Aen Pawestri, Setyaning Perdhana, Firman Fajar Pertiwi, Made Gendis Putri Puspitasari, Isnaini Putri Suryandari Qabul Dinanta Utama Rasyda, Riezka Zuhriatika Reza Kusuma Nurrohman Rismalinda Rosyid Ridho S., Ince Siti Wardatullatifah Sani, Nurwan Sirajuddin H. Abdullah, Sirajuddin SRI KURNIASIH Syukron, Muhammad Unsunnidhal, Lalu Wahyudi Wahyudi Wahyudi Zulfikar Widhiantari, Ida Ayu Yasa, I Wayan Sweca Yesica Marcelina Romauli Sinaga Yusuf, Ahmad Rahman Zamzami, Muhammad Ilham Zulfikar, Wahyudi