Molecular and physiological approaches to understand the ecology of methanol degradation during the biofiltration of air streams

Biofiltration of high concentrations of methanol vapors: removal performance, carbon balance and microbial and fly populations

“…They are respectively facultative anaerobic and microaerobic. In air biofilters, anaerobic or microaerobic zones are possible due to limited oxygen diffusion to the biofilm, particularly under high biomass contents and pressure drop, and strictly anaerobic microorganisms have already been identified while treating methanol . Pannonibacter phragmitetus and Caenispirillum bisanense were found to be predominant in a new wastewater treatment photosynthetic bacteria technology, confirming their organic pollutant removal capacities …”

“…As in a previous study, all fungi encountered during methanol biofiltration belong to the Ascomycota phylum (Fusarium solani, Alternaria alternata, Talaromyces pinophilus). 15 The Fusarium genus has already been observed in methanol biofilters. 47,48 Additionally, F. solani has been encountered in biofilters treating a wide range of VOCs.…”

“…across the filter bed), with various types of packing materials, operating conditions and microbial populations ( Table 1). [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Nevertheless, little is known about biofiltration limits, particularly regarding steady state operation at the maximum system capacity under high concentrations of methanol. As can be seen in Table 1, most studies have focused on the treatment of inlet methanol concentrations (C in ) below 5 g m −3 , while only three experiments have reported results above 10 g m −3 .…”

“…Biological oxidation of methanol vapors has been successfully applied in biofilters or biotrickling filters (similar to the precedents, but with continuous recirculation of a mineral medium solution across the filter bed), with various types of packing materials, operating conditions and microbial populations (Table ) . Nevertheless, little is known about biofiltration limits, particularly regarding steady state operation at the maximum system capacity under high concentrations of methanol.…”

Microbial community analysis in biotrickling filters treating isopropanol air emissions

“…Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria related to the Proteobacteria domain, Firmicutes (low G+C Gram-positive bacteria) and Actinobacteria (high G+C Gram-positive bacteria). These groups have been previously identified as the main ones involved in VOC removal [26,27]. Pseudomonas sp., Pseudomonas putida, Bacillus and…”