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All Journal Rekayasa Mesin Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Jurnal Ternak Tropika JURNAL PENGABDIAN KEPADA MASYARAKAT Scientific Journal of Mechanical Engineering Kinematika International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Journal of Multidisciplinary Applied Natural Science GMPI Conference Series Jurnal Civil Engineering Study ABDI UNISAP: Jurnal Pengabdian Kepada Masyarakat Journal of Community Empowerment Jurnal Polimesin
Agung Sugeng Widodo
Fakultas Teknik Universitas Brawijaya
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Development of phenolic-modified activated carbon for reduced energy band gap and improved semiconductor performance Rahmadanti, Rahmadanti; Widodo, Agung Sugeng; Sulistyono, Sulistyono; Purnami, Purnami
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.8234

Abstract

This study aims to develop more efficient activated carbon-basedsemiconductor materials through modification with phenolic compounds to reduce the energy gap and increase adsorption capacity. Activated carbon was modified by adding phenolic compounds, then characterized using FTIR, UV-Vis, SEM, and EDS to analyze structural, morphological, and electronic changes. The UV-Vis characterization results showed that the AC 70 + F 30 sample experienced a wavelength shift towards the x-axis, which indicates a decrease in energy gap and is confirmed by Tauc plot analysis from 3.60 eV to 2.98 eV. SEM-EDS results revealed changes in pore morphology and a decrease in carbon content due to the interaction between activated carbon and phenolic compounds. These findings indicate that phenolic modification effectively reduces the energy gap and improved charge-transfer characteristics, thereby contributing to the development of more environmentally friendly and efficient activated carbon-based semiconductor materials.
PELATIHAN DAN PRAKTIK PEMBUATAN PUPUK ORGANIK DARI KOTORAN HEWAN DI DESA BOCEK, KABUPATEN MALANG Iriany, Atiek; Ridlo, Mahmuddin; Setiawan, Adi; Waziiroh, Elok; Widodo, Agung Sugeng; Ariyanto, Danang
Journal of Community Empowerment Vol 4, No 3 (2025): Desember
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jce.v4i3.36738

Abstract

ABSTRAKPetani kopi di wilayah Gunung Arjuna, Desa Bocek, Kecamatan Karangploso, Kabupaten Malang menggunakan pupuk kimia untuk perawatan tanaman, karena faktor kemudahan mendapatkan pupuk kimia. Sementara, UD. Kopi Java Indonesia merupakan roaster kopi yang berperan sebagai buyer hasil panen kopi lereng Gunung Arjuna memiliki kebutuhan kualitas produk green bean tersertifikasi organik untuk pasar ekspor. Melalui Program Doktor Mengabdi Pengembangan Kemitraan (DM-PK), Direktorat Riset dan Pengabdian kepada Masyarakat Universitas Brawijaya (DRPM UB) menyelenggarakan pendampingan pertanian organik dan keberlanjutan (sutainability). Tujuan kegiatan adalah meningkatkan kesiapan petani kopi dalam sertifikasi organik dengan pelatihan dan praktik pembuatan pupuk organik dari kotoran hewan. Petani kopi sejumlah 20 orang dan 1 orang pemilik roster kopi menjadi mitra DM-PK. Metode kegiatan terdiri dari pelatihan sertifikasi organik, praktik pembuatan pupuk organik dari kotoran hewan dan evaluasi kesiapan implementasi kopi organik. Mitra kegiatan DM-PK UB terdiri dari 20 petani kopi lereng Arjuna dan 1 roaster kopi. Waktu pelaksanakan kegiatan DM-PK UB pada bulan Oktober dan November 2025 di CV Kopi Java Indonesia, Desa Bocek, Karangploso, Malang. Penjelasan materi diikuti praktik secara langsung oleh petani memerikan manfaat dan dapat meningkatkan kesiapan sertifikasi kopi organik. Hasil evaluasi dengan nilai overall 4.1 menunjukkan petani kopi lereng Gunung Arjuna “Siap” untuk implementasi kopi organik.Kata kunci: Kopi; Pupuk; Organik; Pelatihan.ABSTRACTCoffee farmers in the Mount Arjuna area, Bocek Village, Karangploso District, Malang Regency, use chemical fertilizers for plant care due to the ease of obtaining them. Meanwhile, UD. Kopi Java Indonesia, a coffee roaster that acts as a buyer for coffee harvests from the slopes of Mount Arjuna, needs quality organically certified green beans for the export market. Through the Doctoral Program for Partnership Development (DM-PK), the Directorate of Research and Community Service at Brawijaya University (DRPM UB) provides assistance in organic farming and sustainability. The objective of the activity is to improve the readiness of coffee farmers for organic certification through training and practice in making organic fertilizer from animal manure. Twenty coffee farmers and one coffee roster owner are DM-PK partners. The activity method consists of organic certification training, practice in making organic fertilizer from animal manure, and evaluation of readiness for implementing organic coffee. DM-PK UB's partners consist of 20 coffee farmers from the slopes of Arjuna and one coffee roaster. The DM-PK UB program will be implemented in October and November 2025 at CV Kopi Java Indonesia, Bocek Village, Karangploso, Malang. The material will be explained, followed by hands-on practice by farmers, highlighting the benefits and improving readiness for organic coffee certification. The evaluation results, with an overall score of 4.1, indicate that coffee farmers on the slopes of Mount Arjuna are "Ready" for organic coffee implementation. Keywords: Coffee; Fertilizer; Organic; Training.
Co-Authors A.A. Ketut Agung Cahyawan W Adi Setiawan Akhmad Ali Imron Anas Mukhtar Andy Nugraha Anindito Purnowidodo Ari Wahjudi Arwin Arwin Ary Mustofa Ahmad Atiek Iriany Awaluddin Awaluddin Danang Ariyanto Denny Widhiyanuriyawan Djarot B. Darmadi Djarot B. Darmadi, Djarot B. Eko Siswanto Eko Siswanto Elandi Elandi Elandi Elok Waziiroh Faizal, Elka Fauzi, Katanda Fajar Hanafi Ashad Huda, Ahmad Akromul I Nyoman Gede Wardana Khairul Anam Khoiril Anam, Khoiril Lilis Yuliati Mega Nur Sasongko Moch. Agus Choiron Mochammad Junus Muhammad Nizar Ramadhan Muhammad Nur Shobakh Pamungkas, Ilham Akbar Pradigdo, Dedy Purnami Purnami Rahmadanti, Rahmadanti Ridlo, Mahmuddin Salim Salim, Salim Slamet Wahyudi Solikhin, Atfalus Solikhin Sudarno Sudarno Sudarno, Sudarno Sudjito Soeparman Sulistyono Sulistyono Susinggih Wijana Tamara F. Utama Tulus Subagyo, Tulus Wahyono Suprapto Wigbertus Ngabu Windi Zamrudy Wisnumurti . Yudy Surya Irawan