Interaction of tetrahydrofuran and methyl tert-butyl ether in waste gas treatment by a biotrickling filter bioaugmented with Piscinibacter caeni MQ-18 and Pseudomonas oleovorans DT4

Chemosphere. 2022 Jan;286(Pt 1):131552. doi: 10.1016/j.chemosphere.2021.131552. Epub 2021 Jul 13.

Abstract

Bioaugmented biotrickling filter (BTF) seeded with Piscinibacter caeni MQ-18, Pseudomonas oleovorans DT4, and activated sludge was established to investigate the treatment performance and biodegradation kinetics of the gaseous mixtures of tetrahydrofuran (THF) and methyl tert-butyl ether (MTBE). Experimental results showed an enhanced startup performance with a startup period of 9 d in bioaugmented BTF (25 d in control BTF seeded with activated sludge). The interaction parameter I2,1 of control (7.462) and bioaugmented BTF (3.267) obtained by the elimination capacity-sum kinetics with interaction parameter (EC-SKIP) model indicated that THF has a stronger inhibition of MTBE biodegradation in the control BTF than in the bioaugmented BTF. Similarly, the self-inhibition EC-SKIP model quantified the positive effects of MTBE on THF biodegradation, as well as the negative effects of THF on MTBE biodegradation and the self-inhibition of MTBE and THF. Metabolic intermediate analysis, real-time quantitative polymerase chain reaction, biofilm-biomass determination, and high-throughput sequencing revealed the possible mechanism of the enhanced treatment performance and biodegradation interactions of MTBE and THF.

Keywords: Biotrickling filter; Kinetics; Methyl tert-butyl ether; Self-substrate inhibition; Tetrahydrofuran.

MeSH terms

  • Biodegradation, Environmental
  • Burkholderiales
  • Furans
  • Methyl Ethers* / analysis
  • Pseudomonas oleovorans*

Substances

  • Furans
  • Methyl Ethers
  • methyl tert-butyl ether

Supplementary concepts

  • Piscinibacter caeni