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All Journal Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Journal Serambi Engineering (JSE)
Mulyani Zahra Paramata
Universitas Negeri Gorontalo
Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health Social Sciences

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Pemanfaatan Fly Ash dan Bottom Ash Sebagai Adsroben dalam Menurunkan Parameter COD dan BOD pada Limbah Cair Tahu Risti Ristianingsih Badu; Wiwin Rewini Kunusa; Nur Inda R. Umadji; Mulyani Zahra Paramata; Anisyah A. MS. A
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The demand for clean water in Indonesia has been steadily increasing, but water pollution from industrial wastewater, especially from tofu production, remains a significant challenge. This study investigates the potential of fly ash and bottom ash as adsorbents to reduce chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in tofu wastewater. Laboratory experiments were conducted with different adsorbent doses of 25, 50, and 75 grams. The adsorption process involved stirring the samples for 60 minutes, followed by a sedimentation period of 120 minutes. The results showed that fly ash was more effective than bottom ash in reducing COD and BOD levels. At a dose of 75 grams, Fly Ash achieved a 72% reduction in COD (from 0.8672 mg/L to 0.2438 mg/L) while Bottom Ash resulted in a 68% reduction with a final COD concentration of 0.2735 mg/L. A similar pattern was observed in the reduction of BOD. These results indicate that both fly ash and bottom ash can be effective and environmentally friendly alternatives for the treatment of tofu wastewater.
Empowering Bulota Village Communities through Lake Limboto Water Quality Monitoring Dewi Diana Paramata; Mulyani Zahra Paramata
Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Vol 15, No 2 (2026): Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/sibermas.v15i2.40180

Abstract

Lake Limboto is a strategic freshwater ecosystem in Gorontalo Province whose declining water quality, driven by sedimentation, water hyacinth proliferation, and domestic waste, threatens fisheries productivity and the welfare of surrounding communities, particularly in Bulota Village, Telaga Jaya District. Coastal residents in this area have limited knowledge and technical capacity to monitor water quality independently. This community engagement program therefore aimed to build local capacity for participatory water quality monitoring and to strengthen blue economy literacy. Activities included a preliminary field survey, coordination with the village government, technical training and field practice in measuring pH, Total Dissolved Solids (TDS), and Dissolved Oxygen (DO), formation of a village monitoring group, and development of manual and digital logbooks. Measurements at three observation stations around Lake Limboto showed pH, TDS, and DO values within the Class III water quality standard for fisheries. Participants gained the ability to operate simple monitoring instruments and record data systematically, and a village-based monitoring group was established as an institutional foundation for continued, community-driven monitoring. Community empowerment through participatory water quality monitoring and blue economy literacy is therefore an effective strategy for supporting the long-term sustainability of Lake Limboto and the welfare of its coastal communities.
Co-Authors Anisyah A. MS. A Dewi Diana Paramata Nur Inda R. Umadji Risti Ristianingsih Badu Wiwin Rewini Kunusa