Genomic adaptation and metabolic hierarchy: Microbial community response to oxygen stress in community derived from sludge treating refinery wastewater

Optimizing Autotrophic Sulfide Oxidation in the Oxygen-Based Membrane Biofilm Reactor to Recover Elemental Sulfur

“…The ability to oxidize all S compounds may have given Thiomonas an advantage when O 2 became limiting and intermediate S species became more important. Tibeticola , the second most dominant genus in stages 2 and 3, thrives with low to medium O 2 concentrations (e.g., stage 2 and 3 conditions) …”

“…Tibeticola, the second most dominant genus in stages 2 and 3, thrives with low to medium O 2 concentrations (e.g., stage 2 and 3 conditions). 38 Tibeticola belongs to the family of Burkholderiaceae, which are capable of sulfide oxidation. 39 With a higher O 2 -delivery capacity in stage 4, the diversity and richness increased, but with different groups dominating than in stage 2, which had a similar O 2 /S 2− → S 0 ratio.…”

Biorecovery of Agricultural Soil Impacted by Waste Motor Oil with Phaseolus vulgaris and Xanthobacter autotrophicus

“…Although it reduced the concentration of WMO to a value of 3040 ppm, which was lower than the value limit recognized by NOM-138 [ 4 ], the treatment does not fully render the use of the agricultural soil for plant production because of the risk of absorption of the WMO by agricultural crops [ 1 , 2 , 30 ]. In clear contrast to the biostimulation of the soil impacted by WMO, followed by bioaugmentation with X. autotrophicus , which has the ability to degrade aromatics from the WMO [ 14 , 16 ] to continue with the phytoremediation of the WMO with P. vulgaris, which was housed by X. autotrophicus [ 20 , 25 ], a decrease of 190 ppm in the WMO was achieved [ 12 , 31 ], a concentration equivalent to that observed in soil devoid of contamination by hydrocarbon mixtures that ensures agricultural production without risk to the human or animal consumer [ 2 , 18 , 30 ]. The decrease in the concentration of WMO in the agricultural soil when biostimulated, followed by bioaugmentation with X. autotrophicus and then inoculation of P. vulgaris in phytoremediation, resulted in a final concentration of 680 ppm of WMO [ 32 ].…”

“…Subsequent bioaugmentation occurs when the soil is inoculated with Xanthobacter autotrophicus, a facultative endophytic bacteria that uses WMO as a source of carbon and energy to remove WMO [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. Biostimulation and bioaugmentation are strategies for reducing WMO and phytoremediation by Phaseolus vulgaris and X. autotrophicus [ 17 ] to ensure that the final WMO concentration is below the limit accepted by NOM-138 [ 4 ].…”