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Optimasi Bio-char Hasil Proses Katalitik Pirolisis Palm Kernel Expeller (PKE) Menggunakan Katalis NiMo/NZA dengan Pendekatan RSM Sihotang, Fernando; Bahri, Syaiful; Saputra, Edy
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 6 No 2 (2025): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.6.2.110-121

Abstract

The increasing demand for renewable energy sources has driven interest in biomass-based alternatives, particularly bio-char derived from palm kernel expeller (PKE), an abundant by-product of Indonesia’s palm oil industry. This study aims to optimize bio-char production through catalytic pyrolysis of PKE using a NiMo/NZA catalyst, employing a Response Surface Methodology (RSM) with a Box-Behnken design. Key variables investigated include T (°C) (400–500 °C), catalyst loading (2–6%), and metal loading (0–4% wt). The NiMo/NZA catalyst was synthesized through acid activation, metal impregnation, and thermal treatment, and its structure was confirmed using FTIR analysis. Pyrolysis experiments were conducted in a fixed-bed reactor under nitrogen and hydrogen atmospheres. The highest bio-char yield of 39.38% was obtained at 400 °C with 2% catalyst and 4% metal loading. Optimization modeling using Minitab v.22 indicated that the optimal conditions were at 400 °C, 6% catalyst, and 2.91% metal loading, resulting in a predicted yield of 36.82% with a desirability of 0.979. Statistical analysis showed a significant influence of catalyst and metal loading over temperature on bio-char yield (p-value < 0.05; Adjusted R² = 0.9236). These results support the potential of catalytic pyrolysis with tailored catalysts to enhance bio-char production from palm biomass, contributing to waste valorization and renewable fuel development.
STRENGTHENING RELIGIOUS ATTITUDES AND INTERFAITH COMMUNICATION IN BUILDING SOCIAL HARMONY: PEACE AND CONFLICT TRANSFORMATION Saputra, Edy; Sutrisno, Sutrisno; Zulmaulida, Rahmy; Noviani, Julia; Gradini, Ega; Harnedi, Joni; Hikmah, Nurul; Utami, Rizka
As-Sidanah Vol 7 No 2 (2025): OKTOBER
Publisher : LP2M Universitas Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/assidanah.v7i2.369-386

Abstract

Indonesia's religiously plural districts have periodically experienced tensions rooted in administrative procedures and misunderstandings in interfaith relations. This service activity aimed to identify forms of religious attitudes and communication patterns in Aceh Tengah and Aceh Singkil communities, as well as surface participatory strategies for sustaining social harmony. Using a Participatory Action Research (PAR) cycle, the program included Training of Trainers (ToT), Focus Group Discussions (FGDs), participatory mapping, community education, and iterative monitoring and evaluation conducted with teachers, students, religious leaders, FKUB members, and local officials. The service showed that Aceh Tengah exhibited strong tolerance supported by inclusive Gayo cultural norms, open deliberative communication, and proactive engagement between the government and the FKUB. Aceh Singkil faced recurrent challenges related to worship-permit arrangements, yet communities maintained mutual respect and associative ties that helped de-escalate issues. The program empowered local stakeholders to act as agents of tolerance and clarified bottom-up feedback channels within existing top-down procedures, generating practical improvements and guidance for replication. In conclusion, collaborative, bottom-up communication institutionalized through government, interfaith forums, and community partnerships was essential to manage diversity and sustain harmony; the PAR-based approach provided a practical model and transferable lessons for similar plural settings across Indonesia.
KHUTTAH `ILAJIYYAH `ALA ASÂS NAZARIYYAH TAHLÎL AL-AKHT‘ AL-LUGAWIYYAH FÎ TA`LÎM AL-LUGAH AL-`ARABIYYAH Ahmad Afandi; Edy Saputra; Muhammad Fadhlan
El-Tsaqafah : Jurnal Jurusan PBA Vol. 21 No. 1 (2022): Juni 2022
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/tsaqafah.v21i1.5448

Abstract

The field of Arabic language education suffers from shortcomings in the adopted curriculum. Learners realize serious problems when learning Arabic in the classroom. The teacher is committed to solving their problems and makes a conscious effort to improve the educational content in the classroom. The theory of linguistic errors analysis plays an important role in identifying learners' learning problems and taking the necessary educational measures to overcome them. The study of linguistic errors makes a good contribution - theoretically - about the common linguistic characteristics in the teaching of the second language. In practice, the teacher assists in designing remedial courses by following the steps of analyzing language errors in extracting them. It complies with providing the appropriate material that prevents learners from repeating their linguistic error.
Pengaruh Kepemimpinan Digital Kepala Sekolah dan Layanan Digital Sekolah terhadap Mutu Pendidikan di SMA Negeri 6 Lhokseumawe Zulmaulida, Rahmy; Nurasiah; Sri Fitri Gayo, Widia; Saputra, Edy
Jumper: Journal of Educational Multidisciplinary Research Vol 5 No 1 (2026): Jumper: Journal of Educational Multidisciplinary Research
Publisher : LSM Catimore dan Sahabat Jl. Paya Ilang/Pertamina Desa Lemah Burbana, Takengon, Aceh Tengah 24552

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56921/jumper.v5i1.366

Abstract

This study aims to determine the effect of the principal's digital leadership and school digital services on the quality of education at SMA Negeri 6 Lhokseumawe. This study uses a quantitative approach method. Data collection is done by using a questionnaire or questionnaire technique. The population is SMA N 6 Lhokseumawe, and the sample taken is 40 respondents. Data analysis techniques include analysis prerequisite tests, descriptive data analysis, and hypothesis testing. The results of the study show that: (1) the influence of the principal's digital leadership on the quality of education is significant, based on the level of significance (0.000 < 0.050) with a magnitude of 50.3%. Then the hypothesis is accepted (2) the effect of school digital services on theaquality of education is significant, based on the level of significance (0.000 < 0.050) with an effect of 41.9%. Then the hypothesis is accepted (3) the effect of the principal's digital leadership and school digital services on the quality of education is of simultaneous significance, based on the level of significance (0.000 < 0.050) with an effect of 64.8%, the hypothesis is accepted.