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All Journal JKIE (Journal Knowledge Industrial Engineering) JURNAL HERITAGE AGROMIX Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) JATI (Jurnal Mahasiswa Teknik Informatika) Community Empowerment Journal of Industrial View Jurnal Cakrawala Ilmiah ABDINE Jurnal Pengabdian Masyarakat Jurnal Pendidikan Indonesia (Japendi) International Journal of Trends in Mathematics Education Research (IJTMER) Journal of Economic and Social Empowerment Serambi Engineering E-Amal: Jurnal Pengabdian Kepada Masyarakat
Abdul Wahid
Univrsitas Yudharta Pasuruan
Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Public Health Social Sciences Other

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Journal : Serambi Engineering

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Pendekatan Ekonomi Sirkular Dalam Industri Tembakau : Mendaur Ulang Limbah WWTP Menjadi Kompos Kaya Nutrisi Melalui Proses Anaerobik Tri Figur Fuad; Abdul Wahid
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The implementation of circular economy principles is crucial for industries to achieve sustainability, including the tobacco industry which generates significant organic waste in the form of sludge from its Wastewater Treatment Plant (WWTP). This study demonstrates a circular economy model by upcycling WWTP sludge into nutrient-rich compost using anaerobic digestion (AD) technology. The AD process was conducted on the sludge at a laboratory scale under mesophilic temperature conditions. The quality of the final compost product (digestate) was evaluated based on physicochemical parameters and compared with national compost quality standards. The results showed that the AD process successfully transformed the sludge into a stable and nutrient-rich material. The final product's C/N ratio reached 20:1, which is ideal for soil application. The contents of total N (1.6%), Phosphorus (P₂O₅ 1.1%), and Potassium (K₂O 0.9%) indicate its potential as an effective organic fertilizer. The quality of the compost produced was proven to meet the SNI 19-7030-2004 quality standard. This study confirms that upcycling sludge via AD is a feasible and effective approach to implementing a circular economy in the tobacco industry, turning a waste burden into a valuable product and supporting sustainable agriculture.
Implementasi Metode FMEA untuk Mereduksi Cacat Produk pada Proses Produksi Sandal di Departemen Plong Amiruddin, Mochamad; Abdul Wahid
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

CV. Bossbi, as one of the sandal manufacturers, faces challenges related to defective products originating from the initial production process. This study aims to implement the Failure Mode and Effect Analysis (FMEA) method to identify, analyze, and prioritize corrective actions to reduce product defects in the Plong Department. This study uses a quantitative descriptive approach with data collection for two months (January-February 2025) through observation and interviews. The results of the study identified three dominant types of defects from a total production of 177,990 pairs of sandals, namely asymmetrical patterns (39.95%), uneven edges (31.14%), and inappropriate sizes (28.92%). The FMEA analysis produces a Risk Priority Number (RPN) value for each failure mode, where 'asymmetrical patterns' obtained the highest RPN value of 224, followed by 'inappropriate sizes' (RPN = 189), and 'uneven edges' (RPN = 175). The highest RPN value indicates that 'asymmetrical pattern' is the most critical risk caused by imprecise material placement and rushed operators. Based on these priorities, it is recommended that corrective actions be taken in the form of making jigs (assistive tools), standardizing operational procedures (SOPs), and scheduling regular machine maintenance. The implementation of FMEA has proven effective as a tool for mapping risks and providing a basis for measurable improvement proposals to significantly improve product quality.
Co-Authors Achmad Misbah Ahmad Arif Alifia Diana Amiruddin, Mochamad Asmaul Mustaniroh, Siti Ayik Pusakaningwati Dayat, M. Fikri Nur Syarifudin Ika Wahyu Irnia Nurika Khafizh Rosyidi Khoirotur Mursyidah M. Imron Mas’ud Marisannah Millatul Haq Miftachul Huda Misbahul Munir Mohammad Effendi Muhammad Hermansyah Muhammad Hermansyah Muhammad Jasuli Nahdiyatus Syariva Nuriyanto Nuriyanto , Nuriyanto Rahmad Agung Sinta Nur Fadhilah Sri Suhartini Subchan Asy’ari Syamsyul Arifin Tri Figur Fuad Wisma Soedarmadji Wisma Soedarmadji