PVA–silica anion-exchange hybrid membranes prepared through a copolymer crosslinking agent

Cation exchange hybrid membranes prepared from PVA and multisilicon copolymer for application in alkali recovery

“…These values are higher than the corresponding ones of PVA-based cation exchange hybrid membranes containing -SO 3 H groups (IDT: 150-250 1C) [20,21], indicating the higher thermal stability of hybrid membranes A-D. The high thermal stability should be mainly attributed to the presence of multisilicon copolymer [14][15][16][22][23].…”

Porous diffusion dialysis membranes for rapid acid recovery

“…For example, the commercial DF-120 membrane with a thickness of 320 μm has proton dialysis coefficient (U H þ ) of only 0.0085 m h À 1 at 25°C and its processing capability for acid recovery from this acidic waste solution is only about 11.3 L m À 2 d À 1 . To date, the various methods have been employed for the modification of dense AEMs [17][18][19][20][21][22][23][24], however, valuable improvement in proton permeability is still difficult.…”

Diffusion dialysis membranes with semi-interpenetrating network for acid recovery

“…In our research group, numerous efforts have been rendered towards the improvement of high performance anion exchange membranes with different polymer matrix and accordingly DD performance of synthesized membranes were investigated by evaluating the dialysis coefficient of HCl (U H ) and separation factor (S). U H and S values of different membranes for acid recovery (HCl/FeCl 2 ) via DD process of previously published works [6][7][8][9][10][11][12][13][14] were summarized in Table 1. In our research group, semi-homogeneous membranes were developed to overcome the restrictions facing by the heterogeneous membrane such as high cost and limited applications [15][16][17][18][19].…”