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All Journal Journal of Community Service and Empowerment
Herlina Fitrihidajati
Department of Biology Education, Faculty of of Mathematics and Natural Sciences, University state of Surabaya, Jl. Ketintang Pratama V, Gayungan, Surabaya, East Java 60231, Indonesia
Social Sciences Other

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Composting waste using rotten tempeh and stale rice MOL in Kampoeng Pintar Oase Surabaya Zyahwa Azalea Sunardi; Herlina Fitrihidajati; Adi Candra; Nurcholis Nurcholis; Aseyan Aseyan
Journal of Community Service and Empowerment Vol. 7 No. 2 (2026): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jcse.v7i2.43511

Abstract

The high volume of organic waste generated in urban areas calls for effective and sustainable management solutions. Kampoeng Pintar Oase Surabaya still relies on the commercial bioactivator EM4, which is relatively unaffordable; therefore, an environmentally friendly local bioactivator alternative is required. This study aimed to evaluate the effect of local microorganisms (MOL) derived from rotten tempeh and stale rice on composting duration and compost quality. MOL was produced by fermenting rotten tempeh, stale rice, and sugarcane molasses for 14 days. Composting was then conducted using EM4 and MOL treatments, each with three replicates. Composting duration and physicochemical characteristics were analysed descriptively based on laboratory results from BSPJI Surabaya. The results of the study showed that rotten tempeh and stale rice MOL accelerated the composting process to an average of 23 days, compared to 27 days for EM4. The compost produced was dark brown in colour, had an earthy aroma, and contained 1.13% N, 0.48% P, and 6.95% K. The total N+P+K content of 8.56% indicates that the compost meets the minimum requirements for solid organic fertiliser as stipulated in Ministry of Agriculture Regulation No. 01 of 2019.
POC from kitchen waste and rotten tempeh for brazilian spinach cultivation in Kampoeng Pintar Oase Lintang Cahyani Ayu Putri; Herlina Fitrihidajati; Adi Candra; Nurcholis Nurcholis; Aseyan Aseyan
Journal of Community Service and Empowerment Vol. 7 No. 2 (2026): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jcse.v7i2.43512

Abstract

Suboptimal management of household kitchen waste remains an environmental issue in urban communities, including in Kampoeng Pintar Oase Tembokgede, Surabaya. This situation underscores the need for simple and sustainable methods of utilizing organic waste that align with Sustainable Development Goal (SDG) 12 on responsible consumption and production. This community service activity was carried out in collaboration with the Kampoeng Pintar Oase Tembokgede Surabaya community through education and practical training on the production of liquid organic fertilizer (POC) made from kitchen waste and rotten tempeh. The activity methods included outreach on household organic waste management, training on POC production, and a demonstration of POC application on Brazilian spinach (Alternanthera sissoo) as part of urban farming activities within the community. The activity was evaluated through observations of plant growth as well as community response and participation in utilizing organic waste. The results of the activity showed that the POC produced contained the nutrients N, P, K, and organic C with a C/N ratio of 10.7, which is suitable for use as a simple organic fertilizer. POC application improved Brazilian spinach growth and enhanced the community’s skills in converting kitchen waste into useful products.
Co-Authors Adi Candra Aseyan Aseyan Lintang Cahyani Ayu Putri Nurcholis Nurcholis Zyahwa Azalea Sunardi