Effect of macro- and micro-nutrients addition during anaerobic mono-digestion of grass silage in leach-bed reactors

The effect of macro- (NH4Cl) (set I) and micro-nutrients (Fe, Ni, Co and Mo) (set II) addition on chemical oxygen demand (COD) solubilisation during anaerobic mono-digestion of grass silage was investigated in two sets of leach bed reactor experiments at 35°C. Results showed that addition of NH4Cl a...

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Veröffentlicht in:Environmental technology. - 1993. - 40(2019), 4 vom: 15. Jan., Seite 418-429
1. Verfasser: Jagadabhi, Padma Shanthi (VerfasserIn)
Weitere Verfasser: Kaparaju, Prasad, Väisänen, Ari, Rintala, Jukka
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Leach bed reactor anaerobic digestion grass silage methane micro-nutrients Methane OP0UW79H66
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520 |a The effect of macro- (NH4Cl) (set I) and micro-nutrients (Fe, Ni, Co and Mo) (set II) addition on chemical oxygen demand (COD) solubilisation during anaerobic mono-digestion of grass silage was investigated in two sets of leach bed reactor experiments at 35°C. Results showed that addition of NH4Cl and micro-nutrients improved COD solubilisation by 18% (0.56 g SCOD g-1 volatile solids) and 7% (0.45 g SCOD g-1 VS), respectively than control. About 20-50% of the added micro-nutrients were bioavailable in the produced leachates, while the rest (50-80%) were adsorbed onto the grass silage. Results of biological methane potential assays showed that, specific methane yields of grass silage were improved by 17% (0.36 ± 0.02 m3 CH4 kg-1 VSadded) when NH4Cl was supplemented while Fe, Ni, Co and Mo addition improved methane yields by 15% (0.33 ± 0.005 m3 CH4 kg-1 VSadded) when compared to control 
650 4 |a Journal Article 
650 4 |a Leach bed reactor 
650 4 |a anaerobic digestion 
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700 1 |a Kaparaju, Prasad  |e verfasserin  |4 aut 
700 1 |a Väisänen, Ari  |e verfasserin  |4 aut 
700 1 |a Rintala, Jukka  |e verfasserin  |4 aut 
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