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oai:uvadoc.uva.es:10324/286042025-05-07T09:27:05Zcom_10324_1173com_10324_931com_10324_894com_10324_31059com_10324_954col_10324_1371col_10324_31061
UVaDOC author Martín Juarez, Judit author Riol Pastor, Elena author Fernández Sevilla, Jose María author Muñoz Torre, Raúl author García Encina, Pedro Antonio author Bolado Rodríguez, Silvia 2018-02-16T23:15:06Z 2018-02-16T23:15:06Z 2018 Bioresource Technology. https://doi.org/10.1016/j.biortech.2018.02.063. http://uvadoc.uva.es/handle/10324/28604 10.1016/j.biortech.2018.02.063 Bioresource Technology Methane production from pretreated and raw mixed microalgae biomass grown in pig manure was evaluated. Acid and basic pretreatments provided the highest volatile solids solubilisation (up to 81%) followed by alkaline-peroxide and ultrasounds (23%). Bead milling and steam explosion remarkably increased the methane production rate, although the highest yield (377 mL CH4/g SV) was achieved by alkali pretreatment. Nevertheless, some pretreatments inhibited biogas production and resulted in lag phases of 7-9 days. Hence, experiments using only the pretreated solid phase were performed, which resulted in a decrease in the lag phase to 2-3 days for the alkali pretreatment and slightly increased biomass biodegradability of few samples. The limiting step during the BMP test (hydrolysis or microbial inhibition) for each pretreatment was elucidated using the goodness of fitting to a first order or a Gompertz model. Finally, the use of digestate as biofertilizer was evaluated applying a biorefinery concept. eng Attribution-NoDerivatives 4.0 International Effect of pretreatments on biogas production from microalgae biomass grown in pig manure treatment plants info:eu-repo/semantics/article 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URL https://uvadoc.uva.es/bitstream/10324/28604/1/BITE_biogas_2018.pdf File MD5 3ce23d81d7f797e16cce06c37db700a9 1379306 application/pdf BITE_biogas_2018.pdf