دورية أكاديمية
أعرض في EDS

Long Chain Fatty Acid Degradation Coupled to Biological Sulfidogenesis: A Prospect for Enhanced Metal Recovery.

التفاصيل البيبلوغرافية
العنوان: Long Chain Fatty Acid Degradation Coupled to Biological Sulfidogenesis: A Prospect for Enhanced Metal Recovery.
المؤلفون: Florentino AP; Department of Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland., Costa RB; Department of Biochemistry and Organic Chemistry, Institute of Chemistry, São Paulo State University, Araraquara, Brazil., Hu Y; Department of Civil Engineering, School of Engineering, College of Science and Engineering, National University of Ireland Galway, Galway, Ireland., O'Flaherty V; Department of Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland., Lens PNL; Department of Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland.
المصدر: Frontiers in bioengineering and biotechnology [Front Bioeng Biotechnol] 2020 Oct 23; Vol. 8, pp. 550253. Date of Electronic Publication: 2020 Oct 23 (Print Publication: 2020).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Frontiers Media S.A Country of Publication: Switzerland NLM ID: 101632513 Publication Model: eCollection Cited Medium: Print ISSN: 2296-4185 (Print) Linking ISSN: 22964185 NLM ISO Abbreviation: Front Bioeng Biotechnol Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Lausanne : Frontiers Media S.A., [2013]-
مستخلص: This research assessed the microbiological suitability of oleate degradation coupled to sulfidogenesis by enriching communities from anaerobic sludge treating dairy products with S 0 , SO 3 2 - , SO 4 2 - , and S 2 O 3 2 - as electron acceptors. The limiting factor hampering highly efficient oleate degradation was investigated in batch reactors. The best sulfidogenic performance coupled to specialization of the enriched bacterial community was obtained for S 0 - and S 2 O 3 2 - -reducing enrichments, with 15.6 (± 0.2) and 9.0 (± 0.0) mM of sulfide production, respectively. Microbial community analyses revealed predominance of Enterobacteraceae (50.6 ± 5.7%), Sulfurospirillum (23.1 ± 0.1%), Bacteroides (7.5 ± 1.5%) and Seleniivibrio (6.9 ± 1.1%) in S 0 -reducing cultures. In S 2 O 3 2 - -reducing enrichments, the genus Desulfurella predominated (49.2 ± 1.2%), followed by the Enterobacterales order (20.9 ± 2.3%). S 0 -reducing cultures were not affected by oleate concentrations up to 5 mM, while S 2 O 3 2 - -reducing cultures could degrade oleate in concentrations up to 10 mM, with no significant impact on sulfidogenesis. In sequencing batch reactors operated with sulfide stripping, the S 0 -reducing enrichment produced 145.8 mM sulfide, precipitating Zn as ZnS in a separate tank. The S 2 O 3 2 - fed bioreactor only produced 23.4 mM of sulfide precipitated as ZnS. The lower sulfide production likely happened due to sulfite toxicity, an intermediate of thiosulfate reduction. Therefore, elemental sulfur reduction represents an excellent alternative to the currently adopted approaches for LCFA degradation. To the best of our knowledge, this is the first report of oleate degradation with the flux of electrons totally diverted toward sulfide production for metal precipitation, showing great efficiency of LCFA degradation coupled to high levels of metals precipitated as metal sulfide.
(Copyright © 2020 Florentino, Costa, Hu, O'Flaherty and Lens.)
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فهرسة مساهمة: Keywords: beta-oxidation; long chain fatty acid; metal precipitation; oleate toxicity; sulfidogenesis
تواريخ الأحداث: Date Created: 20201116 Latest Revision: 20201117
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC7644789
DOI: 10.3389/fbioe.2020.550253
PMID: 33195115
قاعدة البيانات: MEDLINE
الوصف
تدمد:2296-4185
DOI:10.3389/fbioe.2020.550253