Salting-out effect of tripotassium phosphate on the liquid–liquid equilibria of the (water+acetone+1-butanol+ethanol) system and the salting-out recovery

Salting‐out effect of potassium pyrophosphate (K4P2O7) on the separation of biobutanol from an aqueous solution

“…When the initial concentration of K 4 P 2 O 7 was increased from 100 g kg −1 to saturated condition, the water content of the organic phase under salt‐free conditions decreased from 30.83 wt% to 5.21 wt%. In a previous study by this group, when K 3 PO 4 · 3H 2 O was added into the (water + ABE) solution, the lowest water content of the organic phase under salt‐free conditions at 298.15 K was 7.11 wt%, which was higher than 5.21 wt% in this study. K 3 PO 4 and K 4 P 2 O 7 were kept under saturated conditions in the salting‐out system at 298.15 K, so the results were comparable.…”

Salts and 1‐propanol induced aqueous two‐phase systems: phase separation and application

“…The highly efficient phase‐splitting pattern was ascribed to the relatively weaker hydrophilia of 1‐propanol and the stronger salting‐out effect of the selected electrolytes . Thus, the most important factors effecting the application of the systems (lower contents of water and salt in the organic phase and lower content of extractant in the aqueous phase) were achieved in our study.…”

“…A 0.6‐μL amount of the liquid from the aqueous phase or organic phase was withdrawn by microsyringe and introduced into the injector. The salt‐free composition of the organic phase or the aqueous phase was determined by conducting the normalization method on GC apparatus (Techcomp GC7900, China) equipped with a 2 m × 3 mm(inner diameter) × 5 mm(outer diameter) Porapak Q 80–100 mesh packed column and a thermal conductivity detector (TCD) . The column temperature was kept at 150 °C for 40 min.…”

Novel spectrophotometric method for detection and estimation of butanol in acetone–butanol–ethanol fermenter

“…At sufficient concentration of the salt, potassium ions form "hydration shell" on interaction with water and the counter ions produced by partial hydrolysis of phosphate ions (PO 4 3-= OH -and HPO 4 2-), may interdict the contact of water molecule with acetone, 1-butanol and ethanol molecules. It facilitates the repulsive interaction of water with ABE molecules and hence increases the salting out efficiency and drying out maximum amount of water from the organic layer [22,23].…”