Research Article
Enhancement of Methane Concentration by Removing Contaminants from Biogas Mixtures Using Combined Method of Absorption and Adsorption
Table 1
Experimental properties of methane enhancement research work.
| Run | Removal mixture | Uploaded water (l) | Chemical substances quantity (g) | Range of pH | pH modulates | Time per exp. (Min.) |
| R1 | CaO | 1 | 1–10 | — | HCl/NH3 | 60 | Fe2O3 | 1 | 5–9.5 | Silica gel | — | — |
| R2 | CaO | 1 | 1–10 | — | HCl/NH3 | 60 | | 1 | 5–9.5 | Na2SO4 | — | — |
| R3 | CaO | 1 | 1–10 | — | HCl/NH3 | 60 | FeCl2 | 1 | 5–9.5 | Silica gel | — | — |
| R4 | CaO | 1 | 1–10 | — | — | 60 | | 1 | — | Silica gel | — | — |
| R5 | CaO | 1 | 1–10 | — | — | 60 | Activated carbon | — | — | Na2SO4 | — | — |
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