Ays. of 42 days. Experimental data fitted with predictive regression models, the
Ays. of 42 days. Experimental data fitted with predictive regression models, the modified Gompertz (blue) and first-order Experimental information fitted with predictive regression models, the modified Gompertz (blue) and first-order kinetic (red). kinetic (red).-1 The maximum cumulative SMY (0.145 0.00 m3 CH sustainable operation, withdigestion for this study was achieved inside the limits of 4akg VS) in the GM mono-digestion for this study was L-Quisqualic acid iGluR mixing, pH control, and exogenous chemical enhancers. In con- reout needs for achieved within the limits of a sustainable operation, without the need of quirements foret al. [29] pH control, and exogenous chemical enhancers. In contrast, Fabbri trast, Fabbri mixing, employed stirred systems supplemented with synthetic nutrients, trace components, and Na2 CO for pH supplemented with synthetic nutrients, and et al. [29] employed stirred 3systemsadjustment and made 0.157 m3 CH4 kg-1trace ele0.273 m3 Na2 kg-1 for the Nero Buono and marc and 0.157 m3 CH4 kg-1 and 0.273 m3 ments, and CH4CO3 for pH adjustmentgrape producedGreco grape marc varieties, respec- CH4 tively. On the other hand, study translation Greco grape marc power production could be kg-1 for the Nero Buono grape marc and into a winery-scale varieties, respectively. Having said that, impeded by the addition investigation translation into a of such exogenous enhancers due towould be impeded by the adwinery-scale energy production restrictive operating charges and environmental considerations [51,52]. dition of such exogenous enhancers as a result of restrictive operating fees and environmental considerations [51,52].The maximum cumulative SMY (0.145 0.00 m3 CH4 kg-1 VS) on the GM mono-Molecules 2021, 26, x FOR PEER REVIEW4 ofMolecules 2021, 26,4 of2.1.two. Volumetric Methane Productivity Price (VMPR) The average precise methane production equalled 38.45 L CH4, corresponding to a two.1.2. Volumetric VMPR Productivity CH4 LWork-1 calculated average Methane of 0.8802 L Price (VMPR) d-1. It took 33.6 days (x-intercept) to attain The averageoverall methane production equalled 38.45 L CH4 , corresponding to a 80 on the specific methane yield (Figure two). The volumetric methane productivity calculated average VMPR of 0.8802 L CH4 LWork -1 d-1 It took 33.6 days (x-intercept) to price enables satisfactory comparability across studies. depending on methane extraction, norachieve the with the overall methane yield (Figure two). The For example, inside the co-digestion malised to 80 overall substrate volume for treatment. volumetric methane productivity of price enables rape straw andsatisfactory comparability [48] reached lower VMPR values within the range 0.1dairy manure, Ma et al. across studies depending on methane extraction, normalised for the overall substrate volume for therapy. For instance, within the co-digestion 0.five L CH4 LWork-1 d-1, attaining a maximum methane yield of 209.1 mL CH4 g-1 VS and an of rape straw and dairy manure, Ma et al. [48] reached reduce VMPR values within the range SIR0.1.5 more than 60 days.1 It -1 , attaining Pseudoerythromycin A enol ether custom synthesis concluded that, at a yield of VMPR and shorter HRT, of two:3 L CH L – d can therefore be a maximum methane higher 209.1 mL CH g-1 VS 4 Function four there isan SIR of two:3 oversubstrate overloading, which can be knownhigher VMPRdeclined perforthe absence of 60 days. It might as a result be concluded that, at a to result in and shorter and mance and reactor failure [53]. HRT, there is the absence of substrate overloading, that is known to lead to declinedperformance and reactor failure [53].Figure two. Standard tren.