Solvent sublation for waste minimization in a process water stream — a pilot-scale study

The Experimental Study of Innovative Methods Regarding the Removal of Sm(III)

“…The feature of solvent sublation regarding the possibility of the concentration of multiple metal ions in a small volume of organic solvent shows the potential of this method for wastewater treatment containing metal ions for their subsequent recovery. It should be noted that currently available data regarding the organic phase nature, which are very limited [26,27], indicate that the organic phase ("trap") should have some polarity and should comply with basic requirements for an organic phase in solvent subla- For reasons of the surfactant economy and achievement of the concentration effect, it is reasonable to use a minimum amount of collector, close to its stoichiometric consumption in accordance with the reaction:…”

“…The feature of solvent sublation regarding the possibility of the concentration of multiple metal ions in a small volume of organic solvent shows the potential of this method for wastewater treatment containing metal ions for their subsequent recovery. It should be noted that currently available data regarding the organic phase nature, which are very limited [26,27], indicate that the organic phase ("trap") should have some polarity and should comply with basic requirements for an organic phase in solvent sublation including: being less dense than water; minimum water solubility; and maximum capacity of sublate accumulation. Nowadays, many authors of conducted studies showed that during solvent sublation, the substance distribution is determined by its ability to adsorb on bubble walls, passing through the solution, and it does not depend on the phase volume relationship.…”

Demonstration of membrane distillation on textile waste water: assessment of long term performance, membrane cleaning and waste heat integration

“…Although the pilot trial was operated with the 'Treated MD feed' water, the fractionation process that was found to be effective when treating the 'Untreated MD feed' (Figure 4a) was also installed on the pilot plant to assist with removal of surface active materials, including surfactants and biomolecules [34,35,50], that would otherwise concentrate at high water recoveries. Thus, fractionation was expected to minimise the membrane wetting risk when operating over the long trial period.…”

“…However, a more novel non-biological approach is to consider using simple foam fractionation to remove surface active substances which often attach to hydrophobic MD membranes and cause wetting. Foam fractionation has been considered previously for separation of biomolecules (proteins) [34], dyes, metals and chemical recovery [35] but so far it has not been considered for removing the membrane wetting surface active compounds for MD. Conventional biological treatment and/or foam fractionation may therefore serve as a suitable pre-treatment to a standalone MD operation.…”

HPLC Determination of Chlorophenols in Water with Separation by Ionic Liquids [Bmim]BF4 Aqueous Two-phase Solvent Sublation

“…Solvent sublation 22 is an adsorptive bubble separation process that organic solvent is on the top of the aqueous phase. When some kind of inert gas (nitrogen, air and carbon dioxide are generally) move through the column, the innumerable small gas bubbles are formed.…”