@article{(Open Science Index):https://publications.waset.org/pdf/9997951, title = {Functionalized PU Foam for Water Filtration}, author = {Nidal H. Abu-Zahra and Subhashini Gunashekar}, country = {}, institution = {}, abstract = {Polyurethane foam is functionalized with Sulfonic acid groups to remove lead ions (Pb2+) from drinking water through a cation exchange process. The synthesis is based on addition polymerization of the -NCO groups of an isocyanate with the –OH groups of a polyol to form the urethane. Toluene-diisocyanateis reacted with Polypropylene glycol to form a linear pre-polymer, which is further polymerized using a chain extender, N, N-bis(2-hydorxyethyl)-2-aminoethane-sulfonic acid (BES). BES acts as a functional group site to exchange Pb2+ ions. A set of experiments was designed to study the effect of various processing parameters on the performance of the synthesized foam. The maximum Pb2+ ion exchange capacity of the foam was found to be 47ppb/g from a 100ppb Pb2+ solution over a period of 60 minutes. A multistage batch filtration process increased the lead removal to 50-54ppb/3g of foam over a period of 90 minutes. }, journal = {International Journal of Materials and Metallurgical Engineering}, volume = {8}, number = {4}, year = {2014}, pages = {273 - 278}, ee = {https://publications.waset.org/pdf/9997951}, url = {https://publications.waset.org/vol/88}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 88, 2014}, }