Article Per Year (5 Year)
p-Index From 2021 - 2026
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All Journal Organisms: Journal of Biosciences
Suci Wulan Pawhestri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Veterinary

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Potential of Methane (CH4), Nitrogen (N2), and Carbon Dioxide (CO2) from Eco-Enzyme with the Addition of Cow Feces Starter Kamelia, Marlina; Ulmillah, Aulia; Suci Wulan Pawhestri
ORGANISMS: JOURNAL OF BIOSCIENCES Vol. 5 No. 2 (2025): Organisms: Journal of Biosciences
Publisher : Pusat HKI, Paten, dan Publikasi Ilmiah Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/qcbhj691

Abstract

Eco-enzyme solutions are commonly utilized as disinfectants, cleaners, and liquid fertilizers; however, their potential as substrates for biogas production remains underexplored. This study evaluated the methane (CH₄), carbon dioxide (CO₂), nitrogen (N₂), pH, temperature, and gas pressure generated from eco-enzyme–based anaerobic fermentation supplemented with cow manure as a microbial starter. A quantitative experimental design with five treatments and direct observational measurements was employed, and data were analyzed descriptively. Results showed that methane production was generally low, with the highest concentration observed in treatment P5 (2.889%). The highest gas pressure was also recorded in P5 (70 mL). Nitrogen dominated the gas composition (95.875–99.669%), while CO₂ ranged from 0.237 to 4.125%. These findings indicate that eco-enzyme combined with cow manure produces low CH₄ levels, suggesting that further optimization of substrate composition and fermentation conditions is needed to enhance biogas quality.  
Assessment of Water Quality Using Macrobenthos as Bioindicators in Pier 2 Kota Agung, Tanggamus Regency Suci Wulan Pawhestri; Andandaningrum, Della; Arrumaisha Vina Yofanka
ORGANISMS: JOURNAL OF BIOSCIENCES Vol. 6 No. 1 (2026): Organisms: Journal of Biosciences
Publisher : Pusat HKI, Paten, dan Publikasi Ilmiah Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/sz9vpt14

Abstract

Kota Agung Pier 2 in Tanggamus Regency is a coastal area with high port activities that may affect aquatic environmental conditions. Previous studies on macrobenthos diversity in this area are limited, highlighting the need for updated ecological assessments. This study aimed to evaluate macrobenthos diversity as a bioindicator of water quality using a quantitative descriptive method across three observation stations. At each station, five sampling points with three replicate core samples (10 cm diameter, 10 cm depth) were collected during low tide in May 2025, ensuring consistent environmental conditions. The parameters measured included macrobenthos composition, temperature, depth, water clarity, pH, and dissolved oxygen (DO). Macrobenthos identified included the families Terebellidae, Ophiuridae, Conidae, and Mytilidae. Shannon-Wiener diversity (H′) ranged from 0.29–0.35 (low), evenness (E) from 0.04–0.05, and Simpson’s dominance (C) from 0.28–0.87, reflecting environmental stress and uneven species distribution. The Family Biotic Index (FBI) ranged from 3.81–3.86, indicating good water quality with low organic pollution. Physical and chemical parameters were within the standards set by Government Regulation No. 22 of 2021. Overall, the results show that while macrobenthos communities experience environmental pressures, the water at Pier 2 Kota Agung still supports aquatic life. This study provides updated data for ecological monitoring and informs sustainable coastal management
Co-Authors Andandaningrum, Della Arrumaisha Vina Yofanka Aulia Ulmillah Marlina Kamelia