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Journal : Sriwijaya Journal of Environment

Methane Gas Production Test From Forage Swamp with Ensilase Method As Biogas Plants Kartika, Erra; Gofar, Nuni; Sandi, Sofia
Sriwijaya Journal of Environment Vol 2, No 3 (2017): Low Land
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2017.2.3.72-75

Abstract

This study aims to test the production of methane gas from forage swamps by ensilase as biogas plants. Treatment levels consisted of 3 treatments P1 (100% Kumpai tembaga grass (Hymenachne acutigluma)), P2 (50% Kumpai tembaga grass (Hymenachne acutigluma) + 50% Kemon air (Neptunia oleracea lour)), P3 (100% Kemon air (Neptunia Oleracea lour)) and 5 replications. The result of the diversity analysis showed that silage swamp silage ensilase process significantly (p <0,05) to methane gas formation. The best composition was obtained from the treatment of P1 Kumpai tembaga grass (Hymenachne acutigluma) 100%.Keywords: Production, Methane, Forage Swamps, Ensilase, Biogas Plants.
The Population of Bacteria and CO2 Release on Process of Composting Manure and Swamp Grass Utama, Diana; Gofar, Nuni; Siti Nurul Aidil, Fitri
Sriwijaya Journal of Environment Vol 2, No 1 (2017): Green Environment For Human Welfare
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aimed to analyze the bacteria population, the release of CO2, pH and organic-C and total-N in the process of compost made from manure and swamp grass. Treatment level consist of 100% manure (K100), 50% of manure + 50% swamp grass (K50R50), 25% of manure + 75% swamp grass (K25R75), and 10% of manure + 90% swamp grass (K10R90). The result of this study indicated the dynamic of different bacteria population on different composting materials by increasing of the composting time. The release of CO2 decrease on all treatment levels  by increasing of the composting time. The pH value increased at all levels of treatment, except the composition of 100% manure. The best composition obtained by mixing of 10% manure and 90% swamp grass.Keywords: CO2 release, compost, manure, population, swamp grass.
Optimization of Spirulina platensis Culture Media as an Effort for Utilization of Pangasius Farming Waste Water Wijayanti, Marini; Jubaedah, Dade; Gofar, Nuni; Anjastari, Devi
Sriwijaya Journal of Environment Vol 3, No 3 (2018): Sustainable Resources
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2018.3.3.108-112

Abstract

Pangasius is a fast-growing fish species that has great potential for production and export growth in Indonesia. Their farming produces a lot of organic material and ammonia which potentially make polution in freshwater body. The wastewater can be used for high value microalgal cultivation media.  The microalgae are used in various fields, one of those is Spirulina platensis, a spiral blue green algae.  This aims of this study was to determine the best composition of the technical fertilizer in the pond waste of Pangasius farming pond to obtain maximum density and know the spesific growth rate of Spirulina platensis. The research method used Completely Randomized Design (CRD) with 6 treatments (3 replication), P0 using 100% technical fertilizer without using Pangasius waste water while P1-P5 use 0% (P1), 25% (P2), 50% (P3), 75% (P4) and 100% (P5) technical fertilizer using Pangasius farming waste water. The most efficient treatment obtained 23.90 gL-1 maximum density, 6.22%.d-1 specific growth rate and 87.77% ammonia removal.