Production of biosurfactant using the endemic bacterial community of a PAHs contaminated soil, and its potential use for PAHs remobilization

Motor oil wastewater treatment in a packed bed bioreactor using immobilized native microbial consortium

“…Biodegradation by indigenous microorganisms is a major mechanism and a reliable method that operates by biologically removing toxic compounds such as hydrocarbons, petroleum, and its derivates (Al-Hawash et al, 2018;Sonwani et al, 2020;Tao et al, 2020). The main challenge in the bioremediation of hydrocarbons is their low water solubility (Cazals et al, 2020;Tripathi et al, 2020). However, many hydrocarbon-degrading bacteria can produce emulsifying agents (biosurfactants) that promote the utilization of hydrocarbon substrates as a carbon source (Su et al, 2011;Tripathi et al, 2020).…”

“…Biosurfactants are secondary metabolites that play a beneficial role in the biodegradation of hydrocarbons (Karlapudi et al, 2018;Cazals et al, 2020;Yalaoui-Guellal et al, 2020;Ray et al, 2021). They are surface-active compounds with emulsifying activities.…”

“…They are surface-active compounds with emulsifying activities. Biosurfactants contain both hydrophilic and hydrophobic ends, which allow them to interact at the interface between aqueous and non-aqueous systems (Ostendorf et al, 2019;Cazals et al, 2020;Rani et al, 2020). Crude biosurfactants can be used in wetting, emulsification, and foaming.…”

“…Crude biosurfactants can be used in wetting, emulsification, and foaming. Biosurfactants have become commercially significant due to their various applications in petrochemical, food, agricultural, and industrial sectors (Karlapudi et al, 2018;Sharma et al, 2018;Cazals et al, 2020;Ray et al, 2021).…”

Unraveling the Transport and Fate of Polycyclic Aromatic Hydrocarbons Through Coupling Fluvial Geomorphic Modeling and Measured Data

“…While there are robust studies on the transport and fate of contaminants in fluvial systems Du Laing et al, 2009) but there is a dearth of studies taking an interdisciplinary approach to understanding the chemistry of the pollutants and the transport mechanisms (Taylor and Owens, 2009). Most of the studies for the quantification of PAHs pollutants are solely based on the spatial analysis of sampled topsoil from urban areas (Cazals et al, 2020;Gou et al, 2020;Li et al, 2020b;Wang et al, 2020). The role of urban fluvial channels and the mechanics governing PAHs transport and deposition in rivers has never been investigated.…”