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All Journal Jurnal Teknologi Industri Pertanian Seminar Nasional Lahan Suboptimal Jurnal Minfo Polgan (JMP)
Yulistika, Efri
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Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering Industrial & Manufacturing Engineering Library & Information Science Mathematics Social Sciences Other

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Journal : Jurnal Teknologi Industri Pertanian

 1 
USED TIRE ECOSYSTEM FOR THE RECLAIMED RUBBER INDUSTRY DEVELOPMENT AT PT BRIDGESTONE TIRE INDONESIA Suparno, Ono; Suprihatin; Indrasti, Nastiti Siswi; Hardjomidjojo, Hartrisari; Sunarti, Titi Candra; Utomo, Prasetyo Hadi; Yulistika, Efri; Triyonggo, Yunus; Matasik, Delfania
Jurnal Teknologi Industri Pertanian Vol. 35 No. 2 (2025): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2025.35.2.208

Abstract

Managing end-of-life tyres (ELTs) has become an urgent global issue because tyres are difficult to decompose naturally and take more than 50 years to break down. In the Jabodetabek (Jakarta, Bogor, Depok, Tangerang, Bekasi) area, ELT generation is estimated at 2.5–3 million units annually, with the most significant contributions from Karawang (1,000 units per month) and Bogor (820 units per month). Bias-ply used tires, which contain up to 70% rubber, have significant potential for recycling into raw materials for new tires through reclaimed rubber technology, aligning with the principles of a circular economy. This study aims to map the supply chain ecosystem of ELTs, identify key stakeholders, and optimise material flow to support the development of the rubber industry from reclaimed materials. The study employs a qualitative descriptive method. The number of research locations was determined using the Solvin method with an error rate of 25%. Observations were performed at 15 specific tire shops, two truck tire shops, three fleets, and three used tire collectors in the Jabodetabek and West Java areas. The findings indicate that the total estimated number of ELTs collected in Jabodetabek from tire stores, truck tires, fleets, and collectors reaches 2,860 monthly units. The main challenges in ELT management include limited storage facilities, low awareness of the economic value of waste, and a predominantly conventional management system. The study also reveals that only 20% of ELTs are utilised optimally, highlighting a significant untapped potential.  Keywords: used tires, reclaimed rubber, supply chain, circular economy
POTENSI PENERAPAN KONSEP EKONOMI SIRKULAR UNTUK PENGEMBANGAN INDUSTRI TAHU YANG BERKELANJUTAN Yulistika, Efri; Suprihatin, Suprihatin; Purwoko, Purwoko
Jurnal Teknologi Industri Pertanian Vol. 33 No. 3 (2023): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2023.33.3.254

Abstract

Tofu is one of the products produced mainly by small and medium industries (SMEs). Along with the production of tofu by SMEs, there are many environmental problems. The industry's main ecological problems are waste management, efficient use of materials, water, and energy, and emissions generated during production. One solution that can be done to solve these problems is through the application of the circular economy concept. This research aimed to characterize the tofu production process, identify problems and analyze the potential application of the circular economy concept for the sustainable development of the tofu industry. The research was conducted through field observation and literature study. The research data were processed, analyzed, and presented in a qualitative descriptive manner. The results of the study show that the circular economy concept that can be adopted in the tofu industry A, B, and C is the utilization of solid waste in the form of tofu dregs as food ingredients (nuggets, tempe gembus, shredded and soy sauce), semi-finished foodstuffs (in the form of dregs flour which can be used as raw material for food processing such as crackers, pastries, and brownies), and as animal feed. Circular economy alternatives are analyzed by considering economic, environmental and social feasibility. Alternatives that are feasible and applicable to the tofu industry A, B, and C are washing soybeans in stages to reduce water use, tofu dregs are processed into tempe gembus or other products, cooking soybean porridge with boiler heating and cooking with a steam system, and liquid waste (whey) can be utilized as raw material for nata de soya, biogas and liquid fertilizer. Keywords: circular economy, tofu industry, sustainability
Co-Authors Eka Lidiasari Erika, Desta Ria Hartrisari Hardjomidjojo Indriyani Syafutri, Merynda Matasik, Delfania Nastiti Siswi Indrasti Ono Suparno Parwiyanti Parwiyanti, Parwiyanti Purwoko Purwoko Ramadhan, Muhammad Rahmad Rosidah, Umi Suprihatin Suprihatin Suprihatin Titi Candra Sunarti Utomo, Prasetyo Hadi Yunus Triyonggo, Yunus