Bioelectrochemical Protein Production Valorizing Nh3-Rich Pig Manure-Derived Wastewater and Co2 from Anaerobic Digestion DOI
Fabrizio Adani, Gabriele Soggia,

Andrea Goglio

et al.

Published: Jan. 1, 2024

Microbial electrosynthesis (MES) cell use is an innovative approach for single-cell proteins (SCP) production. Coupling MES with the valorization of CO2 from anaerobic digestion and nitrogen livestock effluents has beneficial environmental effects, reducing greenhouse gas emissions overloading. In addition, power needed can come surplus renewable energy. this study, a biochar-functionalized cathode was tested at varying polarizations, i.e. non polarized, -0.6 V -1.0 vs Ag/AgCl, biogas-derived recovered ammonia pig slurry supplied. Negative polarization switched microbial community heterotrophic, typical unpolarized MES, to mix both heterotrophic autotrophic/electrotrophic communities mainly V. The more negative allowed highest N capture, 39 ± 2 % supplied CO2, 6.7 0.8 N. biomass characterization indicated protein content on dry matter basis 33.1 1.3 (unpolarized), 43.2 0.6 (-0.6 V) 69.1 1.0 (-1.0 V). amino acids profiles investigated showed high nutritional value produced biomass, not far those conventional sources used producing feed/food.

Language: Английский

Bioelectrochemical Protein Production Valorizing Nh3-Rich Pig Manure-Derived Wastewater and Co2 from Anaerobic Digestion DOI
Fabrizio Adani, Gabriele Soggia,

Andrea Goglio

et al.

Published: Jan. 1, 2024

Microbial electrosynthesis (MES) cell use is an innovative approach for single-cell proteins (SCP) production. Coupling MES with the valorization of CO2 from anaerobic digestion and nitrogen livestock effluents has beneficial environmental effects, reducing greenhouse gas emissions overloading. In addition, power needed can come surplus renewable energy. this study, a biochar-functionalized cathode was tested at varying polarizations, i.e. non polarized, -0.6 V -1.0 vs Ag/AgCl, biogas-derived recovered ammonia pig slurry supplied. Negative polarization switched microbial community heterotrophic, typical unpolarized MES, to mix both heterotrophic autotrophic/electrotrophic communities mainly V. The more negative allowed highest N capture, 39 ± 2 % supplied CO2, 6.7 0.8 N. biomass characterization indicated protein content on dry matter basis 33.1 1.3 (unpolarized), 43.2 0.6 (-0.6 V) 69.1 1.0 (-1.0 V). amino acids profiles investigated showed high nutritional value produced biomass, not far those conventional sources used producing feed/food.

Language: Английский

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