A bacterial strain isolated from activated sludge and identified as Bacillus amyloliquefaciens could biodegrade phenol, but 2,4,6-trichlorophenol (TCP) inhibited phenol biodegradation and biomass growth. UV photolysis converted TCP into dichlorocatechol, monochlorophenol, and dichlorophenol, and this relieved inhibition by TCP. Phenol-removal and biomass-growth rates were significantly accelerated after UV photolysis: the monod maximum specific growth rate (μmax) increased by 9 % after TCP photolysis, and the half-maximum-rate concentration (KS) decreased by 36 %. Thus, the major benefit of UV photolysis in this case was to transform TCP into a set of much-less-inhibitory products.
|Original language||English (US)|
|Number of pages||9|
|State||Published - Feb 1 2016|
ASJC Scopus subject areas
- Environmental Engineering
- Environmental Chemistry