Protótipo para monitoramento de um biodigestor e de um gasômetro experimental utilizando controlador, interface web e módulos sensores

Abstract

The use of renewable energy sources has intensified in recent years, as it mitigates impacts on the environment and enhances the use of solid waste, once polluting, in environmental and energy assets, especially when using the anaerobic digestion technique for biogas production. Due to the dynamic biochemical activities that take place in biodigestion, the monitoring of this process becomes essential to maximize methane production, reduce the production of hydrogen sulfide gas and consequently improve the energy efficiency of different types of energy. Thus, the objective of this study was to develop a prototype for monitoring a biodigester and an experimental gasometer using a controller, web interface and sensor modules. A technological research was carried out, involving the modeling of the experimental prototype, the sensor elements, the controller, the web interface and at the end of these steps an anaerobic biodigestion test was carried out. Real-time monitoring of physicochemical variables (temperature, pH, pressure, CO2 and H2S) was performed. The prototypes of the biodigester and the experimental gasholder embedded with controller and sensor modules monitored remotely via web interface, fulfilled their purpose, since the monitoring of the variables was carried out online, remotely and uninterruptedly, eliminating the need for local collection through an operator, which can represent a reduction in the cost in the sample collection process.