Using Pressure-Driven Membrane Processes to Remove Emerging Pollutants from Aqueous Solutions

Preparation and Characterization of Nano-lignin Biomaterial to Remove Basic Red 2 dye from aqueous solutions

The present study prepares alkali lignin (AL) via acidification of black liquor, obtained from a pulp and paper factory. The average molecular weight of AL (equal to 2,530 g/mol) has been determined with gel permeation chromatography. AL has been modified by ethylene glycol, while lignin nanoparticles (LN) has been prepared through acid precipitation technology, their size being assessed by mea...

Preparation and Characterization of Nano-lignin Biomaterial to Remove Basic Red 2 dye from aqueous solutions

The present study prepares alkali lignin (AL) via acidification of black liquor, obtained from a pulp and paper factory. The average molecular weight of AL (equal to 2,530 g/mol) has been determined with gel permeation chromatography. AL has been modified by ethylene glycol, while lignin nanoparticles (LN) has been prepared through acid precipitation technology, their size being assessed by mea...

using carbon nanotubes to remove benzene and toluene from aqueous solutions

background: the removal of ethylbenzene and xylene at a concentration of 10 mg/l from aqueous solutions by single- and multi-walled carbon nanotubes (swcnt and mwcnt, respectively) and hybrid carbon nanotubes (hcnt) was evaluated at a nanomaterials dose of 1 g/l, a contact time of 10 minutes, and a ph 7. methods: synthetic samples were analyzed by gas chromatography/mass spectrometry (gc/ms). i...

application of experimental design to emulsion liquid membrane pertraction of gold ons from aqueous solutions

Separation of Carboxylic Acids from Aqueous Solutions using Hollow Fiber Membrane Contactors

Separation of formic, acetic, and propionic acids from the aqueous stream using membrane solvent extraction has been studied using three different membrane contactors made of polysulfone (PS), polyethersulfone (PES), and polyvinylidene fluoride (PVDF) using two different solvents; including ethyl acetate (EA) and diisopropyl ether (DIPE). The efciency of the membrane and e...