Effect of microwave irradiated Methanosarcina barkeri DSM-804 on biomethanation

Pre-treatment techniques used for anaerobic digestion of algae

“…In micro-wave process energy penetrates uniformly into the material, heating more quickly all parts than conduction methods [69][70][71][72]. Micro-wave pretreatment is used in different types of biomass in order to improve the biogas yield [73][74][75][76].…”

Evaluation of a microwave-heating anaerobic digester treating municipal secondary sludge

“…As previously mentioned, VS reduction and biogas production in the MHAD were higher than those in the control. These results might indicate that microwave irradiation was effective in inducing activity of microorganisms [2], but that microorganisms in the MHAD might consume more energy on cell maintenance than the control. Thus, using microwaves as a means to increase bioreactor temperatures may have benefits exceeding thermal effects on metabolic activity [7].…”

“…Improvement in VS removal efficiency of the MHAD relative to the control increased as the HRT was decreased (Figure 2). The results are logical, because microwave irradiation has positive impacts on the activity of microorganisms [2]. The result indicates that the control at high OLRs limited the rate of organic matter degradation.…”

“…Athermal effects of microwaves on cell and tissue responses have been documented [7,8]. It was reported that Methanosarcina barkeri DSM-804, a methanogenic bacterium, when exposed to microwave radiation, showed faster growth in comparison to the un-irradiated bacterial culture [2]. Zieliński et al (2007) [7] claimed that bacterial richness was significantly higher in the microwave-treated samples.…”

“…Biogas production through anaerobic digestion of organic matter is one such process, which has considerable potential to supplement energy supplies [1,2].…”