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A Taguchi fractional factorial design approach to assessing Cattle-Poultry-Hog manure mix ratio influences on biogas yield |
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| รหัสดีโอไอ | |
| Creator | 1. Inyeneobong Ekoi Edem 2. Oluseye Adewale Adebimpe |
| Title | A Taguchi fractional factorial design approach to assessing Cattle-Poultry-Hog manure mix ratio influences on biogas yield |
| Publisher | Faculty of Engineering, Khon Kaen University |
| Publication Year | 2567 |
| Journal Title | Engineering and Applied Science Research |
| Journal Vol. | 51 |
| Journal No. | 3 |
| Page no. | 419-433 |
| Keyword | Co-digestion, Biogas, Cow manure, Poultry manure, Hog manure, Substrate mix ratio, Taguchi fractional factorial design |
| URL Website | https://ph01.tci-thaijo.org/index.php/easr/index |
| Website title | Engineering and Applied Science Research |
| ISSN | 2539-6161 |
| Abstract | Methane production from co-substrate (CS) bio-digestion of cow, poultry and hog manure (CM: PM: HM) can be a potential energy alternative supply. The effect of the co-digestion of these CSs on biogas and methane yield was investigated in this study. Using the Taguchi fractional factorial design (TFFD) method, twenty-eight experiments with varying CSs mix ratios (CMR) were prepared including three experiments made up of the three individual substrates (ISs). Under mesophilic temperature conditions, controlled volatile solid concentration, and a thirty-day hydraulic retention time with all other physicochemical conditions kept unconstrained, the daily cumulative biogas and methane yields were collected and evaluated. Using these, the ultimate methane yields (V_mi∞^p) were predicted using Richard's kinetic model. The relative V_mi∞^p of the CSs with those of the ISs was compared to establish the synergistic properties of the CSs. The effects of the CSs interactions were also assessed using a quartic polynomial regression model. Furthermore, the optimal CMR necessary for producing the maximum methane yield was also predicted using the TFFD analysis. The V_mi∞^p range for the CMRs and ISs was (0.93-1.97) and (0.55-1.31) litres respectively indicating that higher methane yield production is possible with the use of CSs. However, to achieve this, the CMRs have to be carefully chosen. The relative V_mi∞^p was also found to be higher for all the CMRs further indicating the superiority of co-digesting the substrate rather than mono-digestion. The CSs interactions model showed that the addition of HM and PM produced the best and worst synergistic effects respectively. The TFFD analysis revealed an optimal CMR for CM: PM: HM to be 5:1:5. |
