Pharmaceutical concentration using organic solvent forward osmosis for solvent recovery

Nanopapers for organic solvent nanofiltration.

Would it not be nice to have an organic solvent nanofiltration membrane made from renewable resources that can be manufactured as simply as producing paper? Here the production of nanofiltration membranes made from nanocellulose by applying a papermaking process is demonstrated. Manufacture of the nanopapers was enabled by inducing flocculation of nanofibrils upon addition of trivalent ions.

Greener Solvent Selection, Solvent Recycling and Optimal Control for Pharmaceutical and Bio-processing Industries

This paper proposes the simultaneous integration of environmentally benign solvent selection (chemical synthesis), solvent recycling (process synthesis) and optimal control for the separation of azeotropic systems using batch distillation. The previous work performed by Kim et al. (2004) combines the chemical synthesis and process synthesis under uncertainty. For batch distillation, optimal ope...

Forward osmosis for concentration of anaerobic digester centrate.

The nutrient-rich liquid stream produced during the dewatering of digested biomass (i.e., the centrate) is commonly mixed with the influent raw wastewater at wastewater treatment facilities. This increases the nitrogen and phosphorus loading on biological processes, increases operating costs, and in some cases, results in increased nutrient concentrations in the final effluent. Forward osmosis ...

Exploring Forward Osmosis Systems for Recovery of Nutrients and Water

Livestock wastewater contains a large amount of nutrients that are available for recovery. In this study, a proof of concept process based on Forward Osmosis (FO) was proposed and investigated for in-situ formation of struvite from digested swine wastewater. This FO system took advantage of a drawback reverse solute flux (RSF) and used the reversed-fluxed Mg for struvite precipitation, thereby ...

Solvent Capture for Recovery and Re-use from Solvent-laden Gas Streams