| Title | Medium-chain carboxylates production from co-fermentation of swine manure and corn stalk silage via lactic acid: Without external electron donors |
|---|---|
| ID_Doc | 13909 |
| Authors | Zhang, WQ; Wang, SL; Yin, FB; Cao, QT; Lian, TJ; Zhang, HY; Zhu, ZP; Dong, HM |
| Title | Medium-chain carboxylates production from co-fermentation of swine manure and corn stalk silage via lactic acid: Without external electron donors |
| Year | 2022 |
| Published | |
| Abstract | Environmental issues caused by untreated animal manure and crop straws require the development of resource recovery from waste through a circular economy approach. Swine manure and corn stalks as the main agricultural biomass can be a renewable resource to produce biofuels and chemicals, and they have been successfully converted into methane via anaerobic digestion. However, the revenue from methane has been relatively low. This study aimed to convert swine manure and corn stalk silage into a high-value medium-chain carboxylic acid (MCCA) through a temperature-phased two-stage bioprocess. The carbohydrates in these streams, which were first converted to lactic acid (LA) rich solution at thermophilic condition, were then fermented to MCCA by mesophilic chain elongation without addition of external e-donors. In this study, thermophilic condition enhanced the LA fermentation and shifted the dominant product spectrum from volatile fatty acid (VFA) to LA. The average LA concentration was 8.4 gCOD/L at thermophilic, which was improved by 3.4 times compared with that achieved at mesophilic condition. For the chain-elongating bioreactor, the LA-rich broth was successfully converted into MCCA. Moreover, the maximum productivities of MCCA and n-caproate were 1890 and 1290 mg COD/L/d, respectively, at pH 6.0 with an LA loading rate of 2.1 g COD/L/d. Maintaining an appropriate LA/VFA ratio and mild pH was necessary to overcome the acrylate pathway and drive LA conversion toward n-caproate instead of propionate. In addition, Pseudoramibacter and Caproiciproducens became the dominant community, with a relative abundance of 45.6% and 9.7%, respectively. |
Similar Articles
| ID | Score | Article |
|---|---|---|
13035
|
Zhang, WQ; Wang, SL; Yin, FB; Dong, HM; Cao, QT; Lian, TJ; Zhu, J Produce individual medium chain carboxylic acids (MCCA) from swine manure: Performance evaluation and economic analysis(2022) | |
| 22619
|
De Groof, V; Coma, M; Arnot, T; Leak, DJ; Lanham, AB Medium Chain Carboxylic Acids from Complex Organic Feedstocks by Mixed Culture Fermentation(2019)Molecules, 24.0, 3 | |
| 64523
|
Gazzola, G; Braguglia, CM; Crognale, S; Gallipoli, A; Mininni, G; Piemonte, V; Rossetti, S; Tonanzi, B; Gianico, A Biorefining food waste through the anaerobic conversion of endogenous lactate into caproate: A fragile balance between microbial substrate utilization and product inhibition(2022) | |
| 13219
|
Tampio, EA; Blasco, L; Vainio, MM; Kahala, MM; Rasi, SE Volatile fatty acids (VFAs) and methane from food waste and cow slurry: Comparison of biogas and VFA fermentation processes(2019)Global Change Biology Bioenergy, 11, 1 | |
| 10939
|
Tomás-Pejó, E; González-Fernández, C; Greses, S; Kennes, C; Otero-Logilde, N; Veiga, MC; Bolzonella, D; Müller, B; Passoth, V Production of short-chain fatty acids (SCFAs) as chemicals or substrates for microbes to obtain biochemicals(2023)Biotechnology For Biofuels And Bioproducts, 16, 1 | |
| 14041
|
Fernández-Blanco, C; Veiga, MC; Kennes, C Efficient production of n-caproate from syngas by a co-culture of Clostridium aceticum and Clostridium kluyveri(2022) | |
| 24865
|
More, PP; Gore, S; Dargode, P; Sharma, MB; Lali, AM Volatile Fatty Acids (VFA) Production Through Altered Anaerobic Digestion (AD) Process for Efficient Utilization of Residual Liquid Stream of Pretreated Lignocellulosic Biomass(2022)Bioenergy Research, 15, 3 | |
| 10177
|
Pérez-Barragán, J; Martínez-Fraile, C; Muñoz, R; Quijano, G; Maya-Yescas, R; León-Becerril, E; Castro-Muñoz, R; García-Depraect, O Brewery spent grain valorization through fermentation: Targeting biohydrogen, carboxylic acids and methane production(2024) | |
| 23185
|
Fanfoni, E; Sinisgalli, E; Fontana, A; Soldano, M; Garuti, M; Morelli, L Microbial Characterisation of a Two-Stage Anaerobic Digestion Process for Conversion of Agri-Based Feedstock in Biogas and Long-Chain Fatty Acids in a Circular Economy Framework(2024)Fermentation-Basel, 10, 6 | |
| 14140
|
Wu, HR; Scheve, T; Dalke, R; Holtzapple, M; Urgun-Demirtas, M Scaling up carboxylic acid production from cheese whey and brewery wastewater via methane-arrested anaerobic digestion(2023) |