“…However, big pores bring along a disadvantage, which is low surface area to cryogels that results in low binding capacity of cryogel column (Yao et al, 2007;Baydemir et al, 2009;Aslıyüce et al, 2010;Koç et al, 2011;Hajizadeh et al, 2012). Composite cryogels increase the surface area by embedding microspheres because of high surface area of microspheres (Yao et al, 2006;Le Noir et al, 2007;Bereli et al, 2010;Ivanov et al, 2012;Sun et al, 2012a;Sun et al, 2012b).…”