<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Susana Santos</style></author><author><style face="normal" font="default" size="100%">Débora Azeitona</style></author><author><style face="normal" font="default" size="100%">Lapa, Nuno</style></author><author><style face="normal" font="default" size="100%">João Morais</style></author><author><style face="normal" font="default" size="100%">Helena Lopes</style></author><author><style face="normal" font="default" size="100%">Benilde Mendes</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Study on the effect of thermal pre-treatments in the thermophilic anaerobic digestion of a potato peel waste</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of the International Anaerobic Digestion Symposium within the BioGasWorld 2013</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/ncsn/files/biogas_world_2013_santos_et_al_2013.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">German Society for Sustainable Biogas and Bioenergy Utilisation</style></publisher><pub-location><style face="normal" font="default" size="100%">Berlin, Germany</style></pub-location><pages><style face="normal" font="default" size="100%">138-146</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This work aimed to study the effect of different pre-treatments applied to a potato peel residue, in a thermophilic Anaerobic Digestion (AD) process. All samples were subjected to a mechanical pre-treatment through milling to a particle size below 2 mm. The thermal pre-treatments applied consisted of autoclaving the residue at a gauge pressure of 1.2 bar, under a temperature of 122°C, and for 20, 35 and 55 minutes: assays E122.20, E122.35 and E122.55, respectively. The control assay was performed on a ground residue, which was not submitted to any thermal pre-treatment. All pre-treated residues were subjected to an AD process in a CSTR reactor at 49±1°C. The experimental data showed that the highest methane percentages were very similar (about 92% v/v) for all samples submitted to the thermal pre-treatments. For the control assay, the highest percentage of methane was 87.9% (v/v). The highest biogas yields were recorded in the trial E122.35 (646±50 cm3.g-1 CODremoved), against only 250±20 cm3.g-1 CODremoved for the control assay. The highest biogas yields for VSremoved were attained in the assays E122.55 and E122.35, with values of 646±48 cm3.g-1 VSremoved and 634±59 cm3.g-1 VSremoved, respectively. Globally, the yields registered for the assay E122.35 were similar to those determined in the assay E122.55. Due to the lower energy consumption during the pre-treatment performed in the assay E122.35, this was considered to be the most suitable pre-treatment for this type of residue.&lt;/p&gt;
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