| Autor: |
Oh, Seung-Jun, Ahn, Johng-Hwa |
| Předmět: |
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| Zdroj: |
Journal of Environmental Engineering; Oct2024, Vol. 150 Issue 10, p1-7, 7p |
| Abstrakt: |
This study evaluated the effectiveness of using iron (Fe) powder and ferrous chloride (FeCl2) to decrease hydrogen sulfide (H2S) concentration ([ H2S ]) from biogas production by anaerobic digestion (AD) of primary sludge, and to decrease phosphate (PO4-P) concentration ([ PO4-P ]) in the sludge. [ H2S ] and [ PO4-P ] removal increased as doses of Fe powder and FeCl2 increased to a certain point. Optimal supplementation was 5 g/L for Fe powder (H2S reduction=98% , PO4-P removal=95%) and 0.5 g/L for FeCl2 (H2S reduction=98% , PO4-P removal=97%). Appropriate dosage of Fe powder or FeCl2 can control [ H2S ] in biogas and decrease [ PO4-P ] in AD effluent, but excessive dosage can inhibit the digestion. The biogas production and methane content were higher with Fe powder compared with FeCl2 , but neither treatment had a significant effect on methane yield. The measured biogas production was accurately captured by the first-order kinetic model, as evidenced by a strong fit with high R2 values (0.957–0.980), and the deviations between the measured and predicted biogas production using the first-order kinetic model were <10%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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