Sammanfattning

Sulfide ions are regarded to be toxic to microorganisms in engineered methanogenic systems (EMS), where organic substances are anaerobically converted to products such as methane, hydrogen, alcohols, and carboxylic acids. A vast body of research has addressed solutions to mitigate process disturbances associated with high sulfide levels, yet the established paradigm has drawn the attention away from the multifaceted sulfide interactions with minerals, organics, microbial interfaces and their implications for performance of EMS. This brief review brings forward sulfide-derived pathways other than toxicity and with potential significance for anaerobic organic matter degradation. Available evidence on sulfide reactions with organic matter, interventions with key microbial metabolisms, and interspecies electron transfer are critically synthesized as a guidance for comprehending the sulfide effects on EMS apart from the microbial toxicity. The outcomes identify existing knowledge gaps and specify future research needs as a step forward towards realizing the potential of sulfide-derived mechanisms in diversifying and optimizing EMS applications.

Nyckelord

Anaerobic biotechnologies; Sulfurization; Thiols; Micronutrients uptake; Interspecies electron transfer; Organic pollutants; Antibiotic resistant genes; Iron sulfide

Publicerad i

Biotechnology Advances
2023, Volym: 69, artikelnummer: 108249
Utgivare: PERGAMON-ELSEVIER SCIENCE LTD

SLU författare

• Skyllberg, Ulf

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

• Schnürer, Anna

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    
  • Linkoping University

Associerade SLU-program

AMR: Bakterier


UKÄ forskningsämne

Annan miljöbioteknik
Mikrobiologi


Publikationens identifierare

DOI: https://doi.org/10.1016/j.biotechadv.2023.108249

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/126647