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Kayıt Tarihi: 2021-13-Ocak
Aktif Durum: Pasif
Gönderilenler: 30
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| Gönderen: 2021-15-Ocak Saat 05:47 | Kayıtlı IP
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Magnetite doped granular activated carbon as an additive
for high-performance anaerobic digestion
In recent years, granular activated carbon
(GACcarbon.com/">granular carbon has been extensively
investigated as an additive for promoting electroactive
microbiome to enhance anaerobic digestion performance.
This study first demonstrates that GAC particles doped
with magnetite can significantly improve the syntrophic
degradation of propionate, a substrate that is not
readily degraded by microbial communities in the
anaerobic digestion process. The bioreactor amended with
magnetite doped GAC achieved the highest methane
production (220 mL/g COD) and COD removal (70%) in fed-
batch tests, which were 1.5 and 1.2 times of those in
control and GAC amended bioreactors, respectively. The
acetate accumulation was found to be correlated with
methane production. Quantitative comparison of microbial
communities suggested that the addition of GAC or doped
GAC didn’t achieve higher microbial biomass compared to
control. Instead, multiple known electroactive bacterial
genera (Shewanella, Pseudomonas, Geobacter, and
Desulfuromonas) were selectively enriched along with
higher levels of heme-binding proteins in the bioreactors
amended with magnetite doped GAC (1.1 × 105 cells/µL) and
GAC (8.4 × 104 cells/µL) in comparison to control
(2.5 × 104 cells/µL).
coal carbon
manufacturer Thus, our results suggest that
tailoring GAC particles though doping with magnetite can
provide an efficient method to achieve high-performance
anaerobic digestion.
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Konu: Magnetite doped granular activated carbon
