The interactions of the biosurfactant surfactin in coal flotation

Diverse utilization of surfactants in coal-floatation for the sustainable development of clean coal production and environmental safety: a review

“…Surfactin is specifically used as an efficient collecting agent for systems that contain both sulphide minerals and coal particles. 63 …”

“…However, despite their effectiveness, they also induce some negative environmental effects. 63 Biosurfactants (rhamnolipids, sophorolipids, and lipopeptides) [64][65][66][67] possess lower toxicity than synthetic surfactants and can be used as a good oating agent. 63 Surfactin is a lipopeptide that is produced by Bacillus subtilis, exhibiting excellent otation properties.…”

“…63 Biosurfactants (rhamnolipids, sophorolipids, and lipopeptides) [64][65][66][67] possess lower toxicity than synthetic surfactants and can be used as a good oating agent. 63 Surfactin is a lipopeptide that is produced by Bacillus subtilis, exhibiting excellent otation properties. 69 In the surfactin molecule, 7 amino acids combine to form a peptide ring, which is connected to 13 to 16 carbon-containing fatty acid chains.…”

Rhamnolipids as Effective Green Agents in the Destabilisation of Dolomite Suspension

“…Consequently, they can be applied to change the properties of solid surfaces in systems with different pH [15] or for environmental remediation [16] without losing their unique ability to change the interfacial properties [17,18]. Up to date, most research has focused on studies of surfactin analogues adsorption on the magnesite, serpentinite, silica particles [19], and coal [20]. However, only Augustyn and co-workers describe the mechanism of surfactin molecules adsorption onto coal particles as physisorption through hydrophobic interactions [20].…”

“…Up to date, most research has focused on studies of surfactin analogues adsorption on the magnesite, serpentinite, silica particles [19], and coal [20]. However, only Augustyn and co-workers describe the mechanism of surfactin molecules adsorption onto coal particles as physisorption through hydrophobic interactions [20]. In the case of glycolipid biosurfactants, rhamnolipids (RLs), the surface of magnesite solid waste [21], and hematite particles [22] have been modified.…”