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Trace elements dosing and alkaline pretreatment in the anaerobic digestion of rice straw

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2018 Italy Publisher:Elsevier BVJournal:Bioresource Technology, volume 247, pages 897-903 (issn: 0960-8524,

Authors: Giovanni Esposito; Piet N.L. Lens; Stefano Papirio; Gerardo Riccardelli; Gerardo Riccardelli; Gabriele Mancini; Gabriele Mancini;

doi: 10.1016/j.biortech.2017.10.001

pmid: 30060428

handle: 11588/685793 , 11580/67091

Trace elements dosing and alkaline pretreatment in the anaerobic digestion of rice straw

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Abstract

The effect of trace elements (TEs) addition and NaOH pretreatment on the anaerobic digestion of rice straw was investigated in batch tests. Co, Ni and Se were added to the raw rice straw at different dosages. The NaOH pretreatment was applied to the rice straw both alone and in combination with the addition of TEs, in order to evaluate potential synergistic effects of the pretreatment and the TEs supplementation on the biogas production yields. The results obtained showed that the alkaline pretreatment was more effective than the TEs addition in increasing the cumulative biogas production, causing a 21.4% enhancement of the final biomethane yield, whereas the increase due to TEs dosing was not statistically significant. The analysis of volatile fatty acids (VFAs) confirmed that the NaOH pretreatment resulted in a higher production of VFAs, indicating an increased hydrolysis, while TEs addition did not cause significant changes in the VFA concentrations.

Country

Italy

Related Organizations

University Federico II of Naples
Italy
IHE Delft Institute for Water Education
Netherlands
University of Cassino and Southern Lazio
Italy
IHE Delft Institute for Water Education
Netherlands

Keywords

Trace elements, Hydrolysis, Biogas, Oryza, Rice straw, Anaerobic digestion; Biogas; Rice straw; Trace elements; Alkaline pretreatment, Trace Elements, Anaerobic digestion, Biofuels, Alkaline pretreatment, Anaerobic digestion, Biogas, Rice straw, Trace elements, Anaerobiosis, Methane, Alkaline pretreatment

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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%