Fig 1.
Scheme of MAB liquor preparation.
Fig 2.
Laboratory installation used in the experiment.
1—anaerobic reactor, 2—mechanical stirrer, 3—heating jacket, 4—influent peristaltic pump, 5—influent storage vessel, 6—effluent storage vessel, 7—digital mass flow meter, 8—gaseous installation and gas sampler with a rubber septum, 9—dewatering valve.
Table 1.
(the mean OLR value and standard deviation are given).
Table 2.
Biogas production, methane concentration, and VS removal for runs [45].
(the mean value and standard deviation are given).
Fig 3.
Percentage of archeal and bacterial taxa in biomass from the experimental reactors (in the table only taxa with abundance over 1.0% in one of the analyzed reactors were presented; the more detailed data are presented in Lebiocka et al. [45]).
Table 3.
Average total concentration of metals and their total content on dry weight basis (± standard deviation) in feedstock and digestate.
Fig 4.
Increases of average total metal content in the digestate compared to the feedstock (%), error bars show 95% confidence interval for the mean.
Fig 5.
Mass balance of heavy metals in reactors, total height of the bar corresponds to the concentration of heavy metals in the digestate (average values are presented).