Investigation of biogas production by bacteria using pistachio skin waste in Sirjan-Kerman city

Background and Aim : Waste and agricultural waste can be used as substrates for microorganisms to produce energy and biofuels. Currently, biogas is one of the world's sources of energy supply, both directly from thermal and lighting energy and as a viable option for use in internal generators, microturbines and fuel cells to generate electricity.Methods : In the course of these studies, the prediction of biogas production process from waste was first designed and manufactured in an anaerobic fermentation device and after sampling the total solid mass (TS) and solid volatile rate (VS) for analysis. Methane was used in gas chromatography (GC) and the reduction of COD and BOD in measured samples was also investigated.Results : Studies showed that biogas production per kilogram of VS removed was ۲۰۰ liters and pH changes were observed from ۶.۷ to ۷.۸. The COD removal rate was ۴۳.۴ and the BOD reduction was ۵۵%, and the TS removal percentage was ۴۴.۱۹% and the VS removal percentage was ۵۴.۱۴%.Conclusion : Methane fermentation and biogas production are microbial products in which methanogens play the most important role and it is a very complex process that is influenced by many factors. In this study, high rates of substrate solution as well as high biogas production were observed in the mesophilic temperature range. The biogas produced in the production of electricity and the feasibility study of the power plant can be used.

کلیدواژه ها:

electricity ، biogas ، pistachio skin ، Sirjan city