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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia
Neneng Sri Hendra
Environmental Research Center, Bogor Agricultural University
Agriculture, Biological Sciences & Forestry

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Utilization of Aquatic Weed Salvinia molesta as a Raw Material for Biogas Production Mujizat Kawaroe; Hefni Effendi; Zidni Ilma Palupi; Neneng Sri Hendra; Dea Fauzia Lestari
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 22 No 2 (2019): Jurnal Pengolahan Hasil Perikanan Indonesia
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (274.632 KB) | DOI: 10.17844/jphpi.v22i2.27891

Abstract

Salvinia molesta is an aquatic weed having very high growth rate. The high abundance of this species biomass could be utilized as a source of alternative energy. This research was aimed to utilize S. molesta as a substrate for biogas production using batch system in order to reduce euthrofication effect in a lake. Cow manure was used as starter for anaerobic process because containing bacteria. Proximate test was conducted to analyze the chemical characteristics of the aquatic weed. Chemical oxygen demand, total solid, and total volatile suspended solid of weed and manure were analyzed according to the APHA 2012 method. Biogas composition was analyzed with gas chromatography. The results showed that the S. molesta contained high lignin content and low C:N ratio. Hydrolisis and acidification process occured very rapid, resulting in an increase of the weed and manure mixture COD. In the other hand, the decreased of COD removal was caused by the massal death of methanogenesis bacteria. The total solid and total volatile suspended solid content were not significantly decreased. Potential biogas production from S. molesta was 58.16 L.kg-1 with 318.29 mL.gram VS-1day-1 of methane production. This production value was still low or compared to that of cow manure which have been established as biogass materials and need modification to improve the biogas production.
Co-Authors Dea Fauzia Lestari Hefni Effendi Mujizat Kawaroe Zidni Ilma Palupi