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All Journal Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI
Angga Saputra
IPB University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Public Health

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Pemberdayaan Masyarakat Desa Cibitung Wetan Menuju Pertanian dan Peternakan Berkelanjutan Berbasis Bioenergi Limbah Organik Yessie Widya Sari; Akhiruddin Maddu; Rina Mardiana; Angga Saputra; Abdurrahman Bahtiar; Dani Indrawati Berlianingtyas; Zahra Firda Santoso; Desi Alifia Putri; Ibrahim Purawiardi; Prima Zuldian; Mohamad Ikbal Hidayah; Raihan Muhammad Akmal
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 12 No. 1 (2026): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.12.1.187-198

Abstract

The agribusiness sector and livestock are among the key contributors to waste production, which is often dumped indiscriminately, resulting in environmental pollution. Organic wastes, such as livestock manure, are also considered to have a great potential for producing energy, including biogas, which is considered a renewable source of energy. Cibitung Wetan Village, Pamijahan District, is a village that has a high potential for agricultural and livestock development, which is very suitable for biogas production and utilization. A community engagement program was conducted by a team of members from the Department of Physics and the Department of Communication and Community Development Sciences, IPB University, to target the community of Cibitung Wetan Village, Pamijahan District, particularly sheep farmers. The main goal of this program is to promote agricultural and livestock development sustainably to increase production, reducing greenhouse gases emitted to the atmosphere. The implementation of this community engagement program was conducted through four stages, including socialization, education and training on digester construction, application of digester technology, and mentoring and evaluation. In this program, a team of members from IPB University worked together with Taruna Tani Transfarmers Farmer Group, Cibitung Wetan Village, on the construction of the digester. The training activities also revealed an increase of 49% in the knowledge and attitude of the participants, as evaluated through pre-test and post-test methods. Intensive mentoring also improved the partners’ skills in the technical areas of installation, monitoring, and maintenance of the digester system. This program shows that the use of livestock and agricultural wastes through the application of the digester system can be an alternative route to self-sufficiency in energy production, can create more added value to the wastes, and can contribute to the development of community-based sustainable agriculture and livestock production systems.
Acoustic Panel from Coconut Fiber and Spent Coffee Ground as Sound-Absorbing Material for Sustainability Yessie Widya Sari; Pristy Nabila; Salsabilla Bayah; Annisa Azahra; Rohul Hartman; Angga Saputra
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol. 11 No. 3 (2026): September 2026
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v11i3.5753

Abstract

  Conventional building materials are energy-intensive and generate substantial waste, motivating the valorization of agricultural by products into sustainable acoustic materials. This study developed an acoustic panel from Coconut Fiber (CF) and Spent Coffee Grounds (SCG) bound with a cassava starch-based adhesive, with SCG incorporated at 0%, 15%, and 30% (samples A1, A2, and A3, respectively). SCG addition increased panel density from 208.9 kg/m3 (A1) to 247.5 and 268.7 kg/m3 for A2 and A3. Tensile testing showed that SCG reduced the maximum stress while increasing the Young's modulus, indicating a trade-off between ductility and stiffness. Scanning electron microscopy revealed that SCG particles bridged the coconut fiber network, altering the pore structure and air-flow resistivity. Sound absorption coefficients measured across 250-5000 Hz using the impedance tube method showed that A2 (85% CF, 15% SCG) achieved the best overall performance, reaching coefficients of 0.86 at 500 Hz and 0.69 at 250 Hz and outperforming A1 and A3, particularly at low-to-mid frequencies. Excessive SCG in A3 reduced absorption due to increased density and reduced porosity. These findings demonstrate that CF-SCG composite panels are a promising, low-cost, biobased alternative to conventional acoustic materials and SCG for balancing sound absorption performance with sustainable resource valorization.
Co-Authors Abdurrahman Bahtiar Akhiruddin Maddu Annisa Azahra Dani Indrawati Berlianingtyas Desi Alifia Putri Ibrahim Purawiardi Mohamad Ikbal Hidayah Prima Zuldian Pristy Nabila Raihan Muhammad Akmal Rina Mardiana Rohul Hartman Salsabilla Bayah Yessie Widya Sari Zahra Firda Santoso