Removal of crystal violet from aqueous solution by sorption into semi-interpenetrated networks hydrogels constituted of poly(acrylic acid-acrylamide-methacrylate) and amylose

Novel composite sorbent AAm/MA hydrogels containing starch and kaolin for water sorption and dye uptake

“…Highly swollen polymeric gel with the ability to absorb water in high amounts is again under investigation, because of its potential applications in bioengineering, biomedicine, and other related areas (Barakat and Sahiner 2008;Yu and Xiao 2008;Moraes et al 2009;Ozay et al 2009;Kumari et al 2010;Li 2010;Kabiri et al 2011;Karadag and Üzüm 2012). Studies have been reported on the use of hydrogels or hydrophilic characteristic crosslinked polymers or copolymers as adsorbents for the removal of heavy metals, for the recovery of dyes, for removal of toxic or radioactive elements from various effluents and for metal pre-concentration for environmental sample analysis from aqueous solutions (Barakat and Sahiner 2008;Yu and Xiao 2008;Moraes et al 2009;Ozay et al 2009;Kumari et al 2010;Li 2010;Kabiri et al 2011;Karadag and Üzüm 2012;Ortaboy et al 2013).…”

Optimizing adsorption of crystal violet dye from water by magnetic nanocomposite using response surface modeling approach

“…The cationic dyes are more toxic than the anionic dyes [1], as these can easily interact with negatively charged cells membrane surfaces, and can enter into cells and concentrate in cytoplasm [2]. CV is a typical triphenylmethane dye, which is widely used in textile dyeing industries, as a biological stain, dermatological agent, veterinary medicine, additive to poultry feed to inhibit propagation of harmful bacteria [3].…”

Kinetic modeling for dye removal using polyelectrolyte enhanced ultrafiltration

“…Since, the pK a value of PAA is in the acidic range, there is complete retention of the dye at the neutral pH. The sharp transition of dye retention when pH is increased from 1 to 4 is also observed in another study [46]. Unlike polyethyleneimine (PEI) where the complexation constants changes its value with the pH of the solution [47], the rate of During the dissociation of PAA, the ionized carboxylic groups of the polyacid attract the protons.…”