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Elkawnie
Published by Universitas Islam Negeri Ar-Raniry Banda Aceh
ISSN : 24608912     EISSN : 24608920     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Engineering
Elkawnie is a journal of Integration Science and Technology with Islam. It's covering research and technology in the field of study of Architecture, Biology, Chemistry, Environmental Engineering, ICT, Physical Engineering and other science and technology field. In particular, Elkawnie's journal discusses the development of research and technology in contributing to development as part of Muslim scientists in the academic sphere.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 482 Documents
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Cassava-Derived Microbial Pre-Fermentation Enhances BSF Bioconversion of Cabbage Waste: A Trade-Off Between Larval Performance and Compost Maturity Lisafitri, Yuni; Arta Sinaga, Yuni; Annas Mufti, Aulia; Hasiany, Sillak; Irhamni
Elkawnie Vol. 12 No. 2 (2026): Article In Press
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v12.i2.35977

Abstract

Abstract: The high moisture content and rapid decay of cabbage residues make organic market waste challenging to manage, and the black soldier fly larvae can turn this waste into protein-rich biomass and nutrient-rich residues. This study evaluated how different fermentation durations (0, 4, 7, and 10 days; coded F0, F4, F7, F10) with cassava-derived local microorganisms affect the bioconversion of cabbage waste during a 14-day BSF feeding period, focusing on waste reduction, larval performance, conversion efficiency, and residue chemistry. All measurements used three biological replicates per treatment and were analysed by one-way and mixed ANOVA with Tukey HSD post-hoc tests. Pre-fermentation significantly raised the waste reduction index (WRI) from 6.88 ± 0.01 in F0 to 7.01–7.03 in all fermented treatments (F = 114.8, p < 0.001, η² = 0.98). Final larval biomass, efficiency of conversion of ingested feed (ECI), and feed conversion ratio (FCR) all peaked at F4 (251.7 ± 1.7 mg larva⁻¹; ECI = 12.96 ± 0.12 %; FCR = 7.72 ± 0.07), each significantly outperforming F0 (p < 0.05). Specific growth rate was lowest at F10 (31.6 ± 1.5 % day⁻¹), significantly below F4 (36.0 ± 0.2 % day⁻¹), indicating that prolonged fermentation depresses larval performance, an effect not previously emphasised in the literature. Liquid residue potassium showed a non-monotonic response, peaking at F4–F7 and dropping back to control levels at F10 (0.45 ± 0.04 %; F = 75.2, p < 0.001), while liquid carbon collapsed from 0.55 % to 0.14 % at F10. Solid residue C/N ratios met the SNI 19-7030-2004 mature-compost range (10–20) only for F7 and F10. Overall, 4-day pre-fermentation with cassava-derived MOL best balances bioconversion efficiency, larval yield, and compost maturity, providing a practical, low-cost strategy for sustainable BSF-based valorisation of cabbage market waste by industries and local farmers through shorter processing times sustainably. Abstrak: Kadar air yang tinggi dan laju pembusukan yang cepat pada limbah kubis menjadikan limbah organik pasar sulit dikelola, sementara larva black soldier fly (BSF) mampu mengubah limbah tersebut menjadi biomassa kaya protein dan residu yang kaya nutrisi. Penelitian ini mengevaluasi pengaruh berbagai lama fermentasi (0, 4, 7, dan 10 hari; dikodekan sebagai F0, F4, F7, dan F10) menggunakan mikroorganisme lokal (MOL) berbahan dasar singkong terhadap biokonversi limbah kubis selama periode pemeliharaan larva BSF selama 14 hari, dengan fokus pada reduksi limbah, performa larva, efisiensi konversi, dan karakteristik kimia residu. Seluruh pengukuran dilakukan menggunakan tiga ulangan biologis untuk setiap perlakuan dan dianalisis menggunakan ANOVA satu arah dan ANOVA campuran yang dilanjutkan dengan uji lanjut Tukey HSD. Pra-fermentasi secara signifikan meningkatkan waste reduction index (WRI) dari 6,88 ± 0,01 pada F0 menjadi 7,01–7,03 pada seluruh perlakuan fermentasi (F = 114,8; p < 0,001; η² = 0,98). Biomassa akhir larva, efficiency of conversion of ingested feed (ECI), dan feed conversion ratio (FCR) semuanya mencapai nilai tertinggi pada F4 (251,7 ± 1,7 mg larva⁻¹; ECI = 12,96 ± 0,12%; FCR = 7,72 ± 0,07), yang secara signifikan lebih baik dibandingkan F0 (p < 0,05). Specific growth rate terendah ditemukan pada F10 (31,6 ± 1,5% hari⁻¹), secara signifikan lebih rendah dibandingkan F4 (36,0 ± 0,2% hari⁻¹), yang menunjukkan bahwa fermentasi berkepanjangan menurunkan performa larva, suatu fenomena yang belum banyak ditekankan dalam literatur. Kandungan kalium pada residu cair menunjukkan respons yang tidak monoton, mencapai puncak pada F4–F7 sebelum kembali ke tingkat kontrol pada F10 (0,45 ± 0,04%; F = 75,2; p < 0,001), sedangkan kandungan karbon cair menurun drastis dari 0,55% menjadi 0,14% pada F10. Rasio C/N residu padat memenuhi kisaran kompos matang menurut SNI 19-7030-2004 (10–20) hanya pada F7 dan F10. Secara keseluruhan, pra-fermentasi selama 4 hari menggunakan MOL berbahan dasar singkong memberikan keseimbangan terbaik antara efisiensi biokonversi, hasil biomassa larva, dan kematangan kompos, sehingga menjadi strategi yang praktis dan berbiaya rendah untuk mendukung valorisasi limbah kubis berbasis BSF yang berkelanjutan oleh industri dan petani lokal melalui waktu pengolahan yang lebih singkat.
Integrated Evaluation of Service Standards, Facility Adequacy and User Satisfaction at Toll Road Rest Areas: Evidence From The Sigli-Banda Aceh Toll Road, Indonesia Syammaun, Tamalkhani; A. Rani, Hafnidar; Dailami; Zuqnina, Yaumi; A. Rahman, Rahimi
Elkawnie Vol. 12 No. 2 (2026): Article In Press
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v12.i2.36104

Abstract

Abstract: Rest areas play an essential role in supporting road safety and travel comfort on toll roads by providing facilities for drivers to rest during long-distance travel. This study aims to evaluate service standard compliance, facility feasibility, and user satisfaction at toll road rest areas along the Sigli-Banda Aceh Toll Road, Indonesia. A quantitative approach was employed through field observations, document analysis, and questionnaire-based surveys conducted at Rest Area KM 37B and KM 54B. Descriptive statistical analysis, validity and reliability testing, and Customer Satisfaction Index (CSI) analysis were applied to assess user perceptions and service performance. The results indicate that the facility feasibility level at Rest Area KM 37B reached 75% (moderately feasible), while Rest Area KM 54B achieved 80% (highly feasible). In terms of service performance, KM 37B recorded 75% and KM 54B obtained 62.5%, both categorized as moderately serviceable. The CSI analysis shows an overall user satisfaction level of 79%, indicating that users are generally satisfied with the provided facilities and services. Despite meeting most technical standards and basic service requirements, several aspects, particularly parking capacity, toilet availability, and operational service facilities, require further improvement. This study provides practical insights for toll road operators and policymakers to enhance the quality and effectiveness of rest area infrastructure and services. Abstrak: Tempat Istirahat dan Pelayanan (TIP) memiliki peran penting dalam mendukung keselamatan jalan dan kenyamanan perjalanan di jalan tol dengan menyediakan fasilitas bagi pengemudi untuk beristirahat selama perjalanan jarak jauh. Penelitian ini bertujuan untuk mengevaluasi kesesuaian standar pelayanan, kelayakan fasilitas, dan kepuasan pengguna pada tempat istirahat dan pelayanan di sepanjang Jalan Tol Sigli-Banda Aceh, Indonesia. Penelitian ini menggunakan pendekatan kuantitatif melalui observasi lapangan, analisis dokumen, dan survei berbasis kuesioner yang dilakukan pada Rest Area KM 37B dan KM 54B. Analisis statistik deskriptif, uji validitas dan reliabilitas, serta analisis Customer Satisfaction Index (CSI) digunakan untuk menilai persepsi pengguna dan kinerja pelayanan. Hasil penelitian menunjukkan bahwa tingkat kelayakan fasilitas pada Rest Area KM 37B mencapai 75% dengan kategori cukup layak, sedangkan TIP KM 54B mencapai 80% dengan kategori sangat layak. Dari aspek kinerja pelayanan, KM 37B memperoleh nilai 75% dan KM 54B sebesar 62,5%, yang keduanya dikategorikan cukup melayani. Analisis CSI menunjukkan tingkat kepuasan pengguna secara keseluruhan sebesar 79%, yang mengindikasikan bahwa pengguna secara umum merasa puas terhadap fasilitas dan layanan yang disediakan. Meskipun sebagian besar standar teknis dan persyaratan pelayanan dasar telah terpenuhi, beberapa aspek, khususnya kapasitas parkir, ketersediaan toilet, dan fasilitas layanan operasional, masih memerlukan peningkatan lebih lanjut. Penelitian ini memberikan masukan praktis bagi operator jalan tol dan pembuat kebijakan dalam meningkatkan kualitas dan efektivitas infrastruktur serta layanan tempat istirahat dan pelayanan.

Page 49 of 49 | Total Record : 482

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