Development of nano-filters of activated carbon impregnated with iron oxide nanoparticles to remove hydrogen sulfide from biogas

Reference	Presenter	Authors (Institution)	Abstract
06-083	Diego Cardoso Souza	Souza, D.C.(University of Brasilia); Carvalho, C.G.(University of Brasilia); Hidalgo, M.d.(University of Brasilia); Pinheiro, M.S.(University of Brasilia); Alves, V.A.(University of Brasilia); Coelho, G.D.(University of Brasilia);	The crisis in Brazilian hydro system and the shortage of fossil fuels make the investments in renewable energy sources. Biogas is a renewable fuel that has the composition very similar to natural gas. The production of biogas is from the anaerobic digestion of animal or urban waste. However the applications for this carrier are limited because it counts undesirable compounds such as hydrogen sulfide (${\mathrm{H}}_2\mathrm{S}$). Though in small quantities (up to 1.5%), this compost is toxic to humans and is detrimental to gas installations, because it causes corrosion in the pipes or turbines that the gas flows. Studies carried out for the removal of the ${\mathrm{H}}_2\mathrm{S}$ point what the particles of iron oxides have high adsorption efficiency of this gas. The present work contemplates the development of nano filters using like substrate activated coal impregnated with nanoparticles of iron oxide, and were summarized in the presence of carboxymethylcellulose. The stages of the project were: (1) Synthesis and morphological characterization of the nanoparticular of iron oxides obtained by the method of Pechini, as well as characterization of the substrate of activated coal using the technicians such as DRX, MEV-EDS, SBET. (2) Next were developed three different filters, using the substrate activated coal, different the second one is composed by the substrate the activated coal impregnated with nanoparticles of iron oxides and the third thing with substrate activated coal impregnated with nanoparticles of iron oxide and carboximetylcellulose. (3) Finally, it was evaluated the efficiency of the filters with the help of the infrared spectroscopy technique, using a standard of ${\mathrm{H}}_2\mathrm{S}$, the specters obtained before and after using the filter were obtained, we obtained a efficiency of 98%. What means that the filter could lower thw levels of ${\mathrm{H}}_2\mathrm{S}$.
<< Back