Microbial conversion of oily wastes to methane: Effect of ferric nanomaterials

• Type: Article in International Conference Proceedings Book
• Date: 2020

Authors

Valdo R. Martins (Author) Other; Gilberto Martins (Author) Other; Alexandra Rita Castro (Author) Other; Luciana José Ribeiro Pereira (Author) Other; M. Madalena Alves (Author) Other; Ana J. Cavaleiro (Author) Other; Olívia Salomé G. P. Soares (Author) FEUP; Manuel Fernando R. Pereira (Author) Other

Conference proceedings International

Title: Wastes: Solutions, Treatments and Opportunities III - Selected papers from the 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019

Pages: 339-345

5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019

4 September 2019 through 6 September 2019

Indexing

Scopus - 1 Citation

Other information

Authenticus ID: P-00R-RV3

DOI: 10.1201/9780429289798-54

Abstract (EN): Petroleum-based oily wastes are generated by the oil industry and can be treated/valorized by anaerobic microbial conversion to methane. However, this process is generally slow. Conductive nanomaterials were reported to accelerate the interspecies electron transfer in anaerobic communities and therefore their addition to anaerobic processes treating hydrocarbons may also be advantageous. In this work, two ferric nanomaterials (magnetite and carbon nanotubes impregnated with 2% iron) were tested in microcosms amended with hexadecane and 1-hexadecene. Assays were also made with palmitate, acetate and H2 /CO2, which are intermediates of hydrocarbons biodegradation. With the exception of hexadecane, methane was produced at close-to-stoichiometric amounts for each of the substrates tested. Methane production rates were similar with and without the nanomaterials, possibly due to the inability of the microorganisms to receive/transfer electrons to the materials in this microbial community, suggesting that electron transfer occurred indirectly via soluble electron shuttles (e.g. hydrogen or formate). © 2020 Taylor & Francis Group, London, UK.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7