Improving performance of spiral wound RO elements by in situ concentration polarization-enhanced radical graft polymerization

Historically, biofouling research on spiral wound membrane systems is typically problem solving oriented. Membrane modules are studied as black box systems, investigated by autopsies. Biofouling is not a simple process. Many factors influence each other in a non-linear fashion. These features make biofouling a subject which is not easy to study using a fundamental scientific approach. Nevertheless to solve or minimize the negative impacts of biofouling, a clear understanding of the interacting basic principles is needed. Recent research into microbiological characterizing of biofouling, small scale test units, application of in situ visualization methods, and model approaches allow such an integrated study of biofouling.

Download Full-text

HRP-mediated graft polymerization of acrylic acid onto silk fibroins and in situ biomimetic mineralization

Journal of Materials Science Materials in Medicine ◽

10.1007/s10856-018-6084-y ◽

2018 ◽

Vol 29 (6) ◽

Cited By ~ 2

Author(s):

Buguang Zhou ◽

Qian Zhou ◽

Ping Wang ◽

Jiugang Yuan ◽

Yuanyuan Yu ◽

...

Keyword(s):

Acrylic Acid ◽

Graft Polymerization ◽

Biomimetic Mineralization ◽

Silk Fibroins

Download Full-text

In situ chemical oxidative graft polymerization of aniline from silica nanoparticles

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2004.05.001 ◽

2004 ◽

Vol 87 (1) ◽

pp. 109-113 ◽

Cited By ~ 67

Author(s):

Peng Liu ◽

Weimin Liu ◽

Qunji Xue

Keyword(s):

Silica Nanoparticles ◽

Graft Polymerization

Download Full-text

Synthesis and characterization of composite polysulfone membranes for desalination in nanofiltration technique

Water Science & Technology ◽

10.2166/wst.2010.512 ◽

2010 ◽

Vol 62 (11) ◽

pp. 2655-2663 ◽

Cited By ~ 11

Author(s):

A. Akbari ◽

M. Homayonfal ◽

V. Jabbari

Keyword(s):

Acrylic Acid ◽

Polyacrylic Acid ◽

Graft Polymerization ◽

Irradiation Time ◽

Polymerization Process ◽

Synthesis And Characterization ◽

Porous Support ◽

Ft Ir

Composite nanofiltration (NF) membrane was developed polyacrylic acid (PAA) in situ UV graft polymerization process using ultrafiltration (UF) polysulfone (PSF) membrane as porous support. FT-IR spectra indicated that grafting was performed and it show peaks at 1,732 cm−1 and 3,396 cm−1 region for CO and OH starching bond of acrylic acid (AA) monomer, respectively. AFM microscopy showed the roughness of surface was reduced by increase of UV irradiation times. Effect of irradiation time on the grafting of acrylic acid (AA) in the same concentration was discussed. The salts rejection increase was accompanied with grafting of polysulfone (PSF) ultrafiltration (UF) membrane. The rejection of Na2SO4, MgSO4, NaCl and CaCl2 salts by PSF-grafted-PAA nanofiltration (NF) membrane was in 98, 60, 52 and 30% respectively, under 0.3 MPa.

Download Full-text