Effect of rotational speed on nitrogen removal performance and microbial community characteristics of the rotating biological contactor pure biofilm system inoculated with heterotrophic nitrification-aerobic denitrification bacteria

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115580 - 115580

Published: Jan. 1, 2025

Language: Английский

Characterizing the Contaminant-Adhesion of a Dibenzofuran Degrader Rhodococcus sp.

Microorganisms, Journal Year: 2025, Volume and Issue: 13(1), P. 93 - 93

Published: Jan. 6, 2025

The adhesion between dibenzofuran (DF) and degrading bacteria is the first step of DF biodegradation affects efficient degradation DF. However, their mechanism at molecular level remains unclear. Therefore, this study examined adhesive behaviors mechanisms Rhodococcus sp. strain p52 upon exposure to results showed that mediated by extracellular polymeric substances (EPSs). Compared with sodium acetate as a carbon source, percentages glucose proteins related electron transfer, toxin-antitoxin, stress responses were elevated, which analyzed polysaccharide composition proteomics, contents polysaccharides increased. Moreover, biofilm analysis suggested an increase in EPS content, change components increased yield promoted loose porous aggregation bacteria; caused specific surface area contact characteristics indicated production reduced absolute value zeta potential hydrophobicity p52, was beneficial for These findings help us enhance understanding bioremediation polycyclic aromatic hydrocarbons bacteria.

Language: Английский

Diatom Chaetoceros calcitarans MZB-1 for degrading propylbenzenes in seawater: Cultivation conditions, degradation kinetics, and influencing factors

Marine Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 107154 - 107154

Published: April 1, 2025

Language: Английский