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Lactobacillus inoculation mediated carboxylates and alcohols production from waste activated sludge fermentation system: Insight into process outcomes and metabolic network.
Wu, Lan; Ngo, Huu Hao; Wang, Chen; Hou, Yanan; Chen, Xueming; Guo, Wenshan; Duan, Haoran; Ni, Bing-Jie; Wei, Wei.
Affiliation
  • Wu L; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
  • Ngo HH; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
  • Wang C; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
  • Hou Y; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
  • Chen X; College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China.
  • Guo W; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
  • Duan H; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
  • Ni BJ; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.
  • Wei W; Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia. Electronic address: wei.wei@uts.edu.au.
Bioresour Technol ; 409: 131191, 2024 Oct.
Article in En | MEDLINE | ID: mdl-39094964
ABSTRACT
Producing medium chain fatty acids (MCFAs) from waste activated sludge (WAS) is crucial for sustainable chemical industries. This study addressed the electron donor requirement for MCFAs production by inoculating Lactobacillus at varying concentrations (7.94 × 1010, 3.18 × 1011, and 6.35 × 1011 cell/L) to supply lactate internally. Interestingly, the highest MCFAs yield (∼2000 mg COD/L) occurred at the lowest Lactobacillus inoculation. Higher inoculation concentrations redirected more carbon from WAS towards alcohols production rather than MCFAs generation, with up to 2852 mg COD/L alcohols obtained under 6.35 × 1011 cell/L inoculation. Clostridium dominance and increased genes abundance for substrate hydrolysis, lactate conversion, and MCFAs/alcohol production collectively enhanced WAS-derived MCFAs and alcohols synthesis after Lactobacillus inoculation. Overall, the strategy of Lactobacillus inoculation regulated fermentation outcomes and subsequent carbon recovery in WAS, presenting a sustainable technology to achieve liquid bio-energy production from underutilized wet wastes.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Sewage / Alcohols / Fermentation / Lactobacillus Language: En Journal: Bioresour Technol Journal subject: ENGENHARIA BIOMEDICA Year: 2024 Document type: Article Affiliation country: Australia Country of publication: United kingdom
Fulltext
Add to My VHL
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Sewage / Alcohols / Fermentation / Lactobacillus Language: En Journal: Bioresour Technol Journal subject: ENGENHARIA BIOMEDICA Year: 2024 Document type: Article Affiliation country: Australia Country of publication: United kingdom