However, the maximum cumulative methane volume was obtained with supplementing of ICZ particles with a loading of 1000 mg/L of iron nanoparticles.
By comparing B 0 (simulated maximum cumulative methane yield) and EMY, the B 0 value of each type of vegetable was found to be relatively close to the EMY value in both the modified Gompertz and the MBPPSA model.
As shown in the equation, B represents the simulated cumulative methane yield (mL g VS −1 ), B 0 refers to the simulated maximum cumulative methane yield (mL g VS −1 ) of the vegetable residues, and k and t denote the first-order rate constant (d−1) and digestion time (d), respectively.
The oxygen loading during TMP is of vital importance in the maximum cumulative methane production of sugarcane bagasse and can result in better crystallinity disruption, VS removal, and methane production with less lag-phase time, whereas, AP efficiently removes lignin in addition to improving the methane production rate and technical digestion time.
In this model, B represents the simulated cumulative methane yield (mL g VS −1 ), B 0 refers to the simulated maximum cumulative methane yield (mL g VS −1 ), k means a constant of the model (d−1), t is digestion time (d), n stands for the number of data points, and I 0 represents an inhibition/stability/feasibility determination factor.
Maximum Cumulative Ratio.
Figure 7 Cumulative methane produced during the 38 d anaerobic digestion.
Cumulative methane production and COD of hydrogen fermentation effluent were calculated based on methane yield production (mL CH4/g COD).
The biodegradability (BD) can be obtained from the highest cumulative methane yield from experiment (experimental methane yield, EMY) and the MMP through two methods, as described in Eqs.
In this experiment, biogas production, cumulative methane production and methane production rate were 55.67 486.67 mL, 0 411.37 mL and 0 7.66 mL/h, respectively.
Modified Gompertz equation (Eq. 2) was calculated for cumulative hydrogen production and cumulative methane production (Elbeshbishy and Nakhla 2012; Wongthanate and Polprasert 2015).
