Potencial do aproveitamento da casca de arroz como biomassa no estado do Rio Grande do Sul

Abstract

Rio Grande do Sul is the biggest rice producer in the country, therefore possesses the highest rice husk rejection, this implies envirornemental responsabilities in the point of view of impacts generated by the disposal of this residue in the soil and it's emission of greenhouse effect gases. In an effor to promote sustainable development, the use of this husk as an energetic resource in micro thermoeletrical centrals (MTC) might mitigate these envirornmental impacts. Thus, this work quantified the potential of electricity generation with this biomass and the potential greenhouse effect mitigation for the state. In the 2016/2017 harvest there was a significant production of 8,746,825 tons of rice and consequently a large rice husk surplus volume of 1,772,456 tons . Using the MCT's standard thermoelectric generation technology, for the state of Rio Grande do Sul,was registered an electricity potential per year of 86.4 MW, the national energy production from biomass would go from 0,03% to 0.07% of generation in the country.In this residue exploitation system, a representative potential of greenhouse effect impact mitigation of 4.804.243 tons of equivalent CO2 was found, adding emissions avoided in the decomposition and consumption of electricity in the eletrical network. So, thermoeletrical generation with MCT becomes an interesting option from the economic and envirornemental point of view, for rice processing in the state.