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All Journal AFEBI Economic and Finance Review Grouper: Jurnal Ilmiah Perikanan ASANKA: Journal of Social Science And Education AL-BAYAN: JURNAL HUKUM DAN EKONOMI ISLAM Journal of Fisheries & Marine Jurnal Pelita Raya (JPR) KINEMA
Rozi
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Veterinary Other

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Bacterial Abundance and Identification in Recirculating System of Sumatran Barb Fish Rearing Media with Duckweed as Biofilter Dita Wisudyawati; Ardha Nur Mustofa; Fajri Rahman Afif; Dinzidan Adiputra; Fata Habiburrahman; Md Afsar Ahmed Sumon; Abdul Manan; Rozi; Muhammad Hanif Azhar
Grouper Vol. 17 No. 1 (2026): Grouper: Jurnal Ilmiah Perikanan
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/grouper.v17i1.409

Abstract

The Sumatran Barb fish (Puntigrus tetrazona) is a freshwater ornamental fish which is highly demanded in the ornamental fish export market for its attractive colour patterns. The common problem in ornamental fish farming is the excessive use of water resources, increasing operational costs. A Recirculating Aquaculture System (RAS) is preferred since it can process water repeatedly and is more environmentally friendly. Duckweed plants (Lemna minor) can be used as a natural biofilter because they absorb nutrients such as nitrogen and phosphorus and provide a habitat for beneficial bacteria. This study was conducted for 40 days, with the treatments consisting of different plant coverage areas. Duckweed plants were applied with area coverage of P0/control (without duckweed plant), P1 (20% area coverage of duckweed plants), P2 (40% area coverage of duckweed plants), and P3 (60% area coverage of duckweed plants). The bacterial abundance values obtained during the maintenance period ranged from 1.52 to 1.79 x 106 CFU mL-1 and differed significantly (P<0.05) across all treatments. The lowest TPC value was observed in the P0 treatment (1.52 x 106 CFU mL-1), and the highest in the P2 treatment (1.79 x 106 CFU mL-1). Based on the identification test, bacteria belonging to the genera Neisseria, Acinetobacter, Nitrosomonas, and Pseudomonas were identified. Water quality parameters were optimal across all treatments, namely pH between 6.0 and 6.85, dissolved oxygen (3.43-3.95 mg L-1), TAN (0.2-0.4 mg L-1), and phosphate (1.00-2.5 mg L-1). Meanwhile, temperature and nitrate exceeded the optimal limits, with values ranging from 29 to 30 °C and 72 to 210 mg L-1 across all treatments.
Transformation of Productive Zakat for the Empowerment of Urban Poor Families Zainal Arifin; Adamu Abubakar Muhammad; Rozi; Moch. Hoerul Gunawan; Ayu Safitri
Jurnal Pelita Raya Vol. 1 No. 2 (2025): Jurnal Pelita Raya (JPR)
Publisher : Mahkota Science Publishers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65586/jpr.v1i2.23

Abstract

Zakat, which should be a strategic instrument of social justice, is often still positioned as short-term charitable assistance rather than transformative socio-economic capital. This study proposes an understanding of productive zakat not only as an Islamic economic instrument but also as a welfare policy practice with broad implications for the configuration of social justice in Indonesian urban spaces. This study uses a non-empirical qualitative method, with a critical literature review and an integrative conceptual analysis. The results indicate that productive zakat in Indonesia will be truly meaningful only if it does not stop at mere religious jargon or a financial redistribution mechanism, but becomes a social movement that upholds structural justice in a capitalist, unequal urban ecosystem. Zakat must transcend its role as an aid and function as an agent of change that challenges the roots of poverty, reorganises the power relations between muzakki, amil, and mustahik, and restores the spirit of maqāṣid al-syarī‘ah as an ethical energy for the liberation of humans from dependence and injustice. The success of productive zakat, therefore, is not measured by the number of program success reports or nominal increases in funds, but by the courage of zakat institutions to position themselves as a space for moral resistance against an economic system that breeds inequality by proving that Islamic spirituality not only teaches compassion, but also solidarity with those who are most marginalised in the city.
Co-Authors Abdul Manan Abdul Muis Prasetia, Abdul Muis Adamu Abubakar Muhammad Aksono HP., Eduardus Bimo Al arif, Mohammad Anam Amal, Mohammad Noor Azmai Annas Salleh Ardha Nur Mustofa Ariel E San Jose Ayu Safitri Bustari Hasan Daruti Dinda Nindarwi Dewi, Nina Nurmalia Dian Iriani Dinzidan Adiputra Dita Wisudyawati Fajri Rahman Afif Fata Habiburrahman Feliatra Gazali Salim Hanif Azhara, Muhammad Julian Ransangan Karnila, Rahman Karnila Khanand, Nadeem Kuncorojakti, Suryo Kuncorojati, Suryo Mastanora, Refika Md Afsar Ahmed Sumon Miftahul Ulum Moch. Hoerul Gunawan Mohammad Noor Amal Azmai Muchammad Yunus Mujiyanto Mujiyanto Nittaya Chaiyanate, Nittaya Putri Desi Wulan Sari Rahmahani, Jola Retno Hartati Ryand Daddy Setyawan Salleh, Annas Santanumurti, Muhammad Browijoyo Sari, Putri Desi Wulan Sartika, Linda Sitti Hartinah DS Suud Sarim Karimullah Suwarno Suwarno Suwarno Tyasningsih, Wiwiek Wiwiek Tyasningsih Woro Hastuti Setyantini Yunus , Muchammad Zainal Arifin