Correlation of performance data of silica particle flotations and foaming properties of cationic and nonionic surfactants for the development of selection criteria for flotation auxiliaries

Shojaeimehr, Tahereh; Schwarze, Michael; Lima, Michelle Tupinamba; Schomäcker, Reinhard

doi:10.1016/j.colsurfa.2022.129159

Cited by 5 publications

(1 citation statement)

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“…When a gas stream is dispersed in a surfactant solution, foam bubbles are formed as the surfactant molecules adsorb at the interface between the liquid and the gas. This surfactant property is used in froth flotation to separate pollutants [ 108 , 109 ] or particles [ 110 , 111 ]. Froth flotation is normally carried out at surfactant concentrations close to the CMC in order to discharge a larger proportion of the solute with froth.…”

Section: Discussionmentioning

confidence: 99%

Is Micellar Catalysis Green Chemistry?

et al. 2023

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Many years ago, twelve principles were defined for carrying out chemical reactions and processes from a green chemistry perspective. It is everyone’s endeavor to take these points into account as far as possible when developing new processes or improving existing ones. Especially in the field of organic synthesis, a new area of research has thus been established: micellar catalysis. This review article addresses the question of whether micellar catalysis is green chemistry by applying the twelve principles to micellar reaction media. The review shows that many reactions can be transferred from an organic solvent to a micellar medium, but that the surfactant also has a crucial role as a solubilizer. Thus, the reactions can be carried out in a much more environmentally friendly manner and with less risk. Moreover, surfactants are being reformulated in their design, synthesis, and degradation to add extra advantages to micellar catalysis to match all the twelve principles of green chemistry.

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