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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Scientific Journal of Mechanical Engineering Kinematika Protech Biosystems Journal Jurnal Indonesia Mengabdi Jurnal Pengabdian Masyarakat IPTEKS Energy, Materials and Product Design
Syarif Hidayatullah
Universitas Mataram
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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INVESTIGASI EKSTRAK KULIT BATANG KAPUK SEBAGAI INHIBITOR KOROSI PADA BESI ASTM A36 DALAM LARUTAN NaCl 5% Syarif Hidayatullah; Suteja
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 2 (2025): SJME Kinematika Desember 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i2.791

Abstract

The growing concern for sustainability and environmental issues in the field of metal corrosion has become increasingly urgent in response to global demands for the adoption of environmentally friendly technologies. One of the widely used approaches to address this challenge is the utilization of plant-based corrosion inhibitors due to their abundant availability and relatively simple extraction process. This study aims to investigate the effect of varying concentrations of kapok bark extract inhibitors specifically at 1000, 2000, and 3000 mg/L on the corrosion rate of ASTM A36 steel in a 5% NaCl solution. The anticorrosion performance and inhibition mechanism were carefully examined through potentiodynamic polarization (PDP) testing and electrochemical impedance spectroscopy (EIS). The results revealed that at a concentration of 3000 mg/L, the kapok bark extract was able to significantly reduce both cathodic and anodic reaction rates. This condition led to a decrease in the corrosion rate from 1.51 to 0.28 mm/year in the NaCl solution. The highest inhibition efficiency, 81.61%, was achieved at an inhibitor concentration of 3000 mg/L. Based on these findings, the kapok bark extract demonstrates significant potential as an environmentally friendly corrosion inhibitor for ASTM A36 steel.
KARAKTERISTIK FISIK, MEKANIK, DAN THERMAL BIOKOMPOSIT PVA DIPERKUAT NANOSELULOSA SERAT WARU - SERBUK CaCO3 Suteja; Syarif Hidayatullah
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 2 (2025): SJME Kinematika Desember 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i2.810

Abstract

Polyvinyl alcohol (PVA) biocomposites are a potential material to replace conventional plastics, but mechanical strength and thermal resistance are still low. To overcome these limitations, reinforcement from waru fiber nanocellulose (NCW) and calcium carbonate (CaCO₃) fillers are added to PVA bioplastics. Biocomposites formulator were mixed using a magnetic stirrer until gel formed, then poured onto glass and dried in oven for 12 hours at 60 °C. The density results showed an increase to 2.15 g/cm3 and a thickness of 1.32 mm after adding CaCO3. Meanwhile, PVA-NCW had a density and thickness of 1.27 g/cm3 and 0.26 mm respectively. This indicates as a major factor in increasing the tensile strength of biocomposites. The fillers play a role in increasing the tensile strength of biocomposites through better surface bonding. In addition, the interfacial bonding between PVA and the fillers has been confirmed by FTIR results. SEM observation shows the presence of clumps of NCW and CaCO3. In line with the tensile testing, the highest thermal resistance was also found in the PVA-CaCO3 sample. This is in line with the amount of residue produced by the PVA-CaCO3 sample 6.38%. The developed biocomposite offers great potential as a conventional plastics substitute.
EKSPLORE KARAKTERISTIK TARIK, THERMAL DAN MORPHOLOGY KOMPOSIT EPOXY DIPERKUAT SERAT TIMOHO – MIKRO SERBUK Al2O3 Suteja; Syarif Hidayatullah
Energy, Materials and Product Design Vol. 5 No. 1 (2026): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v5n1.376-382

Abstract

Epoxy composites reinforced with natural fibers can be added with a second filler in the form of powder to enhance their performance. This method affects the thermal resistance properties of the composites. This study investigates the development of epoxy composites reinforced with timoho fibers to which an aluminum oxide (Al₂O₃) powder filler has been added. The composites were fabricated using the hand lay-up method, and the tensile properties, thermal conductivity, and fracture morphology of the epoxy composites were analyzed to determine the effect of varying the volume fraction of Al₂O₃ filler on epoxy composites containing 20% (wt) timoho fibers. The results of the investigation showed that the highest tensile strength of 70.41 MPa was obtained by the SA composite, then decreased to 51.15 MPa in the SC composite. The highest thermal conductivity and linear thermal expansion coefficient values for the composites were each found in the SA sample, at 1179.13 W/m·K and 1045.25 °C, respectively. SEM morphology revealed that the timoho fibers experienced fiber pull-out and cracks in the epoxy matrix. Overall, the SEM images support the tensile strength values.
Penerapan teknologi tepat guna pada kelompok tani Desa Setanggor, Kabupaten Lombok Tengah Suteja Suteja; Nasmi Herlina Sari; Sujita Sujita; Rudy Sutanto; Ida Bagus Alit; Syarif Hidayatullah; Ahmad Akromul Huda
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 3 (2026): June (In Progress)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i3.39015

Abstract

AbstrakKelompok tani sinar harapan memiliki permasalahan perawatan padi berupa biaya dan waktu semprot padi yang terus meningkat. Melalui program Pengabdian Kepada Masyarakat (PKM) ini dihasilkan dan diberikan alat semprot kepada kelompok tani sinar harapan di desa Setanggor sebagai upaya untuk meningkatkan dan mempermudah dalam penyemprotan padi oleh para petani. Oleh karena itu, hal ini menjadi isu yang perlu diselesaikan dalam peningkatan hasil pertanian. Mesin alat semprot ini didesain dan dibuat untuk mengatasi permasalahan seperti mempermudah dan mempercepat semprot padi. Selain pembuatan dan serah terima alat semprot, pelatihan pengoperasian, dan perawatan mesin dilakukan secara Bersama-sama dengn masyarakat dan tim pengabdian dalam program ini. Hasil pengabdian menunjukkan bahwa waktu semprot dan proses semprot pada padi lebih cepat, sehingga mengurangi biaya untuk upah yang dikeluarkan petani. Terlebih lagi, para petani di kelompok tani sinar harapan sudah melewati usaha produktif. Sehingga program ini sangat membantu para petani. Diharapkan program keberlanjutan pada alat yang berbeda lainnya untuk mendukung kemandirian para petani. Kata kunci: alat semprot; kelompok tani sinar harapan; pengabdian kepada masyarakat. Abstract The Sinar Harapan Farmers’ Group faces challenges in rice cultivation, specifically the rising costs and time required for rice spraying. Through this Community Service Program (PKM), a sprayer was developed and provided to the Sinar Harapan Farmers’ Group in Setanggor Village as an effort to improve and streamline rice spraying for farmers. Therefore, this issue must be addressed to increase agricultural yields. This sprayer was designed and built to address issues such as simplifying and speeding up rice spraying. In addition to the construction and handover of the sprayer, training on operation and machine maintenance was conducted jointly with the community and the service team as part of this program. The results of the community service initiative show that the spraying time and process for rice are faster, thereby reducing labor costs for farmers. Furthermore, farmers in the Sinar Harapan farming group have already achieved productive outcomes. Thus, this program is highly beneficial to farmers. It is hoped that sustainable programs involving other types of equipment will be implemented to support farmers’ self-reliance. Keywords: community service; sinar harapan farmers' group; sprayer.
Pemberdayaan Kelompok Tani melalui Pelatihan Mesin Pencetak Briket Berbasis Limbah Pertanian di Desa Sesait Kabupaten Lombok Utara Ahmad Akromul Huda; Rasyid Ridha; Baiq Harly Widayanti; Syarif Hidayatullah; Suteja Suteja
Jurnal Indonesia Mengabdi Vol. 8 No. 1 (2026): June Edition
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) STKIP Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/x0z23r98

Abstract

Desa Sesait memiliki potensi limbah biomassa yang melimpah, namun belum dimanfaatkan secara optimal sebagai sumber energi alternatif. Kegiatan pengabdian ini bertujuan meningkatkan kapasitas masyarakat dalam pengolahan limbah biomassa menjadi briket melalui penerapan mesin pencetak briket. Kebaruan kegiatan ini terletak pada integrasi teknologi mesin pencetak briket dengan pemberdayaan berbasis kelompok yang menghasilkan produk energi terukur serta meningkatkan kapasitas masyarakat. Program ini mendukung pengelolaan limbah biomassa berkelanjutan dan penguatan ekonomi desa. Metode pelaksanaan menggunakan pendekatan partisipatif yang meliputi identifikasi kebutuhan, pelatihan teknis, dan evaluasi. Pelatihan melibatkan 30 peserta dari kelompok tani dan pemuda desa dengan materi proses pirolisis, pengolahan arang, pencampuran, pencetakan, dan pengeringan briket. Evaluasi menggunakan pretest dan posttest dianalisis dengan paired sample t-test. Hasil menunjukkan peningkatan signifikan pengetahuan, dari rata-rata 45,00 menjadi 96,00 (p = 0,000 < 0,05). Uji kualitas briket menunjukkan nilai kalor 4780 cal/gram, kadar air 7,5%, kadar abu 7,6%, dan waktu pembakaran 64,1 menit.
Implementasi mesin pembersih jahe sebagai teknologi tepat guna untuk pengolahan pascapanen pada mitra Yayasan Pondok Pesantren Saadiyah Lombok Tengah Karyanik Karyanik; Suhairin Suhairin; Firzal Arzhi Jiwantara; Ahmad Akromul Huda; Syarif Hidayatullah
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 3 (2026): June (In Progress)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v%vi%i.39223

Abstract

AbstrakYayasan Pendidikan Saadiyah di Lombok Tengah merupakan lembaga berbasis pesantren yang mengembangkan usaha produktif pada sektor budidaya jahe . Namun, kegiatan tersebut masih menghadapi kendala pada aspek teknis, khususnya proses pascapanen jahe yang belum efisien sehingga berdampak pada kualitas dan kuantitas produk. Selain itu, limbah jahe berupa batang, daun dan sisa akar jahe belum dimanfaatkan secara optimal. Kegiatan pengabdian ini bertujuan untuk mengimplementasikan dan mengoptimalkan penggunaan mesin pembersih jahe sebagai teknologi tepat guna guna meningkatkan efisiensi proses pascapanen, kualitas produk, dan kapasitas mitra. Metode yang digunakan meliputi sosialisasi dan demonstrasi langsung penggunaan alat yang melibatkan sekitar 20 peserta.  Evaluasi kegiatan dilakukan melalui pretest dan posttest untuk mengukur peningkatan pengetahuan peserta. Hasil menunjukkan adanya peningkatan pengetahuan peserta dari nilai rata-rata 45,5 menjadi 92,00, dengan hasil uji statistik menunjukkan perbedaan yang signifikan. Selain itu, peserta mampu mengoperasikan dan merawat mesin secara mandiri serta memahami peluang usaha berbasis jahe. Pemahaman peserta terhadap pemanfaatan limbah jahe juga meningkat, khususnya dalam pengolahan limbah menjadi pupuk organik. Secara keseluruhan, kegiatan ini memberikan dampak positif dalam meningkatkan efisiensi proses pasca panen, keterampilan teknis, serta kesiapan mitra dalam mengembangkan usaha jahe secara berkelanjutan berbasis agroindustri. Kata kunci: mesin pembersih jahe; teknologi tepat guna; pascapanen; pemberdayaan masyarakat; kewirausahaan pesantren Abstract Saadiyah Education Foundation in Central Lombok is a pesantren-based institution that develops productive enterprises in the ginger cultivation sector. However, these activities still face technical constraints, particularly in the postharvest processing of ginger, which remains inefficient and affects both product quality and quantity. In addition, ginger waste in the form of stems, leaves, and residual roots has not been optimally utilized. This community service activity aims to implement and optimize the use of a ginger cleaning machine as an appropriate technology to improve postharvest efficiency, product quality, and partner capacity. The methods employed include socialization and direct demonstration of the equipment, involving approximately 20 participants. The evaluation was conducted using pretest and posttest methods to measure participants' knowledge improvement. The results showed a significant increase in participants’ knowledge, with the average score rising from 45.5 to 92.00, supported by statistical analysis indicating a significant difference. Furthermore, participants were able to operate and maintain the ginger cleaning machine independently and gained a better understanding of ginger-based business opportunities. Participants’ awareness of ginger waste utilization also improved, particularly in processing waste into organic fertilizer. Overall, this activity had a positive impact on improving postharvest efficiency, technical skills, and the readiness of partners to develop sustainable ginger-based agroindustry. Keywords: ginger washing machine; appropriate technology; postharvest; community empowerment; pesantren entrepreneurship.
The Sosialisasi Pemanfaatan Limbah Sampah Sebagai Peluang Usaha di Desa Seruni Mumbul, Kabupaten Lombok Timur Ahmad Akromul Huda; Arif Mulyanto; Syarif Hidayatullah; Agustono Setiawan; A’an Nurfajatun
Jurnal Pengabdian Masyarakat IPTEKS Vol. 12 No. 1 (2026): PENGABDIAN MASYARAKAT IPTEKS
Publisher : Universitas Muhammadiyah Jember

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

Abstract

Permasalahan sampah merupakan isu lingkungan yang terus meningkat, terutama pada wilayah dengan aktivitas wisata yang berkembang pesat seperti Desa Seruni Mumbul, Kabupaten Lombok Timur. Rendahnya pemahaman masyarakat tentang pengolahan sampah menyebabkan limbah belum dimanfaatkan secara optimal sebagai sumber daya bernilai ekonomi. Kegiatan pengabdian Program BAKTI MESIN 2025 dilaksanakan untuk meningkatkan pengetahuan masyarakat mengenai pengelolaan sampah berbasis ekonomi sirkular melalui sosialisasi yang mengintegrasikan ceramah interaktif dan media audio-visual. Sosialisasi dilakukan dengan menghadirkan narasumber yang memberikan materi terkait pengolahan limbah organik menjadi kompos, biogas, maggot, serta pemanfaatan limbah plastik menjadi produk bernilai tambah seperti ecobrick dan paving block. Evaluasi kegiatan dilakukan menggunakan pretest dan posttest untuk mengukur peningkatan pengetahuan peserta. Hasil evaluasi menunjukkan adanya kenaikan rata-rata nilai dari 44,00 menjadi 90,00, dengan uji paired sample t-test menghasilkan nilai signifikansi p = 0,000 < 0,05, yang menandakan peningkatan pengetahuan yang signifikan. Capaian keberhasilan program mencapai 90% dan melampaui target awal sebesar 80%. Hasil ini menunjukkan bahwa sosialisasi efektif dalam meningkatkan literasi, kesadaran, dan motivasi masyarakat untuk mengolah sampah secara mandiri dan mengembangkan peluang usaha berbasis limbah. Kegiatan ini menjadi langkah strategis dalam mendukung penerapan ekonomi sirkular di desa wisata serta membuka peluang pengembangan usaha yang berkelanjutan.
IMPROVING ANTIBACTERIAL, THERMAL AND MECHANICAL PROPERTIES OF PVA BIOCOMPOSITES REINFORCED WITH TIMOHO FIBER NANOCELLULOSE Suteja Suteja; Syarif Hidayatullah; Ahmad Akromul Huda
Protech Biosystems Journal Vol 5, No 2 (2025): Protech Biosytem Journal (Desember)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v5i2.36289

Abstract

Polyvinyl alcohol (PVA) has promising potential as gas purification membrane and bioplastic substitute for conventional materials. PVA material was reinforced with nanocellulose timoho fibers (NCT). Ten grams of NCT, 30 mL of distilled water, and 10 grams of PVA were stirred (500 rpm) at <80 oC on a magnetic stirrer until gel formed, then spread on a Petri dish and dried in an oven at 50 °C for 21 hours. The elongation, tensile strength, and elastic modulus test results of PVA-NCT biocomposites showed increases of 21%, 29.97%, and 31.57%, respectively, compared to PVA biocomposites. This was due to the role of NCT as reinforcing agent and the mobility of PVA when tensile test. SEM morphology showed a fine speckled surface due to clumping. The thermal resistance of biocomposite increased due to the good interfacial bonding between NCT and the PVA matrix, thereby reducing the rate of weight loss. Exothermic reactions occurred in both biocomposites. The PVA biocomposite had a melting temperature of 110.34 °C, and PVA-NCT biocomposite 119.83 °C. The antibacterial activity of the PVA biocomposite has a lower inhibitory power compared to the PVA-NCT biocomposite. These biocomposites can be used for membrane materials and environmentally friendly bioplastics. 
Co-Authors Agustono Setiawan Ahmad Akromul Huda Arif Mulyanto A’an Nurfajatun Baiq Harly Widayanti Firzal Arzhi Jiwantara Ida Bagus Alit Karyanik, Karyanik Nasmi Herlina Sari Rasyid Ridha Rudy Sutanto Suhairin, Suhairin Sujita Sujita Suteja Suteja Suteja