Removal of EBT dye from water using silica filled composite hydrogels of poly acrylic acid and polyethylene glycol as a copolymer

In this study, super absorbent hydrogels were synthesized from polyethylene glycol (PEG) and crosslinked polyacrylic acid. Actually a copolymer was formed. The nano and micro silica filled composite hydrogels were also synthesized incorporating 0.1, 0.5 wt% (of total polymer) fillers in hydrogels.These were characterized by FTIR, 1HNMR, 13CNMR, TGA and TEM. The nano silica filled composite hydrogels showing the best result for adsorption and desorption of Eriochrome black T (EBT) for low range ( 2.5-100 mgr / L) of feed dye concentration. Also, the investigations are carried out to study the effects of concentration dye and contact time by UV- VIS spectroscopy technique.

Keywords:

Silica composite hydrogels , Eriochrome black T(EBT) , plastic Red