Degradation of carbazole, dibenzothiophene, and dibenzofuran at low temperature by Pseudomonas sp. strain C3211

Abstract

Abstract-Pseudomonas sp. strain C3211 was isolated from a temperate climate soil contaminated with creosote. This strain was able to degrade carbazole, dibenzothiophene and dibenzofuran at 10ЊC with acetone as a co-substrate. When dibenzothiophene was degraded by strain C3211, an orange compound, which absorbed at 472 nm, accumulated in the medium. Degradation of dibenzofuran was followed by accumulation of a yellowish compound, absorbing at 462 nm. The temperature optimum of strain C3211 for degradation of dibenzothiophene and dibenzofuran was at 20 to 21ЊC, while the maximum temperature for degradation was at 27ЊC. Both compounds were degraded at 4ЊC. Degradation at 10ЊC was faster than degradation at 25ЊC. This indicates that strain C3211 is adapted to life at low temperatures.

Nocardioides: “Specialists” for Hard-to-Degrade Pollutants in the Environment

“…strain ISTDF1 (40% degradation of 200 mg/L in 36 h) [102] Pseudomonas aeruginosa FA-HZ1 (100% degradation of 20 mg/L in 70 h) [103] Pseudomonas sp. strain C3211 (100% degradation of 0.585 mg/L in 67 h) [90] Table 2. Cont.…”

“…It can also completely degrade 33 mg/L of DBF [26] within 96 h at pH 7 and 30 • C. Pseudomonas sp. strain C3211 was found to completely degrade 0.585 mg/L of DBF within 67 h [90], meaning that the degradation rate was over fifty-six times higher.…”

Biotransformation of nitrogen- and sulfur-containing pollutants during coking wastewater treatment: Correspondence of performance to microbial community functional structure

“…Based on the low chemical oxygen demand to total organic carbon (COD/TOC) ratio (Lim et al, 2003), refractory organic compounds including nitrogen-and sulfur-containing compounds (Huang et al, 2016;Zhang et al, 2013a), may represent a substantial fraction as only nitrogenous compounds constitute approximately 20e40% of the organic component in coking wastewater (Li et al, 2003;Meng et al, 2016). Indeed, nitrogen and sulfur-containing compounds are of great environmental importance due to their high toxicity and persistence (Dehua et al, 2016;Jensen et al, 2003) and hence might be critical for the treatment of coking wastewater. So understanding the functional ecology of biotransformation of these pollutants during the treatment process has great practical significance.…”