Colloids and Surfaces A: Physicochem. Eng. Aspects 416 (2013) 86–94 Contents lists available at SciVerse ScienceDirect Colloids and Surfaces A: Physicochemical and Engineering Aspects journa l h omepa g e: www.elsevier.com/locate/colsurfa Review Recent progress on study of hybrid hydrogels for water treatment Guanghui Jing, Li Wang ∗ , Haojie Yu, Wael A. Amer, Lei Zhang State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China h i g h l i g h t s ◮ Hybrid hydrogels as adsorbents for water treatment. ◮ High mechanical strength, low cost, easily recovered. ◮ Outstanding adsorption capacity for metal ions and dyes especially. ◮ The incorporation of clay can reduce the cost and improve the adsorption capacity. g r a p h i c a l a b s t r a c t a r t i c l e i n f o Article history: Received 16 May 2012 Received in revised form 7 September 2012 Accepted 21 September 2012 Available online 28 September 2012 Keywords: Hybrid hydrogel Adsorption Water treatment Heavy metals Dyes a b s t r a c t In recent years, hybrid hydrogels have gained great attention as effective adsorbents due to their high water retention and low cost. This paper gives an overview of the principal results obtained during the treatment of water utilizing hybrid hydrogels for the removal of metal cations, radionuclides, dyes, anions and other miscellaneous pollutants from water. It is evident from the literature survey that hybrid hydrogels have shown good potential applications for the removal of various aquatic pollutants. © 2012 Elsevier B.V. All rights reserved. Contents 1. Introduction .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 2. Hybrid hydrogels for the removal of metal ions and radionuclides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 3. The hybrid hydrogels for dyes removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 4. The hybrid hydrogels for anions removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 5. The hybrid hydrogels for other pollutants removal .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 6. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 References .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 ∗ Corresponding author. Tel.: +86 571 8795 3200; fax: +86 571 8795 1612. E-mail address: opl wl@dial.zju.edu.cn (L. Wang). 1. Introduction With the rapid development of metal plating facilities, mining operations, leather tanning, and pesticides industries, heavy met- als wastewater and organic compound wastewater are directly 0927-7757/$ – see front matter © 2012 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.colsurfa.2012.09.043