Armazenamento de biogás purificado (biometano) na forma adsorvida utilizando carvão ativado

• Autor(a) principal: Feroldi, Michael
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações do UNIOESTE
• Texto Completo: http://tede.unioeste.br/handle/tede/2971
• topic: Adsorção; Sólidos porosos; Combustível veicular; Adsorption; Porous solids; Vehicular fuel; CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA

The transition from fossil sources of energy for renewables in the vehicular sector has been reality in recent years and in this sense the biogas and biomethane present significant potential for use in motor vehicles. Due to several technical issues inherent in methane storage are currently employed LNG (liquefied natural gas) and CNG (compressed natural gas) technologies, which spend high amounts of energy, cylinders and heavy duty equipment for safety reasons, which makes these more expensive technologies. On the other hand, in recent years the adsorption technology with porous materials (GNA) has been studied because it employs smaller amounts of energy and also cylinders built with lighter and cheap materials. In this sense, the present work aims to evaluate the performance of activated carbon in different granulometries (A=3-5 mm, B=2 mm and C= 1-1,5 mm) in storage of methane at 10 bar using factorial planning 2², evaluating also the input parameters of a storage system prototype (flow and temperature), built for the present work. The activated carbon samples in the three granulometries were characterized by N2 fisisorption technique for the determination of texture characteristics, Helium gas pycnometry for quantification of particle density and, scanning electron microscopy and infrared spectroscopy for observation of the morphological and indication of functional surface groups. Under the conditions employed in this study, it was observed the increased ability of adsorption of carbons with a decrease in temperature in all granulometries of carbon with the variation of the input flow to the coals A and B in the range evaluated. With the present study it was possible to triple the storage capacity filled cylinder (activated carbon A = V V-1 39.41) when compared with the empty cylinder (13.14 V V-1), and still submit desorption near 100% (60 ºC and 30 min), proving the efficacy of reuse of adsorbents in cyclic tests.