Characterization of solid-phase extraction of Fe(III) by unloaded polyurethane foam as thiocyanate complex

Employment of polyurethane foam for the adsorption of Methylene Blue in aqueous medium

“…It was employed without previous treatment. PUF cylinders with 3 cm diameter were cut with a leather cutter [14].…”

“…: +55 liquid-liquid solvent extraction [4][5][6][7][8][9]. Although the utilization of polyurethane foams in separation and/or preconcentration procedures has increased since the pioneering work of Bowen, only few research works report a full characterization of the adsorption process of organic and/or inorganic substances onto unloaded and/or loaded PUF [10][11][12][13][14].…”

Polyurethane foam loaded with SDS for the adsorption of cationic dyes from aqueous medium: Multivariate optimization of the loading process

“…It was equipped with a stirrer arm made of stainless steel furnished by the manufacturer. Cylinders of PUF loaded with SDS were adjusted to this stirrer arm, as reported previously [41], in order to perform extraction of cationic dyes from aqueous solutions. The same setup was used for the loading of PUF by stirring the foam cylinders with SDS solutions.…”

“…It was employed without previous treatment. PUF cylinders had 3 cm diameter and 2 cm thickness and they were cut with a leather cutter [41].…”

Removal of Malachite Green from Aqueous Medium Employing Polyurethane Foam as Adsorbent and Sodium Dodecylsulfate as Carrier

“…Since then, PUF has been used as a solid sorbent to separate and preconcentrate a wide variety of inorganic and organic substances from different media (Moody and Thomas 1982). PUF can be directly used without previous treatment (Cassella et al 2000;Farag and El-Shahawi 1991;El-Shahawi and Al-Daheri 1996;Almeida et al 2007;Cassella et al 1999) or modified by the addition or loading of several chelating agents, liquid ion exchangers, or other substances (Alexandrova and Arpadjan 1995;Sant'Ana et al 2004;Cassella et al 2001;Braun et al 1973;Braun and Farag 1972).…”