Preparation of chitosan/poly vinyl alcohol hydrogel crosslinked by glyoxal towards applications in the removal of copper (II) ions from aqueous solutions

Recently, hydrogels have been utilized as effective adsorbents to remove heavy metal ions from aqueous solutions. In this study, the composite hydrogels based on chitosan and poly vinyl alcohol (PVA) crosslinked by glyoxal were conducted towards the application of removing copper ions from water.