This powerpoint presentation presents the problem statement as: cleaned polymer membranes are considered suitable for
continued use;
however, some reports on hypochlorite treatment indicate
degradation of membranes (Wolff and Zydney 2004; Rouaix et
al., 2005; Gaudichet-Maurin and Thominette 2006); and,
it may lead to penetration of pathogens into the filtrate. Membrane characterization
methods included:
X-ray photoelectron spectroscopy;
ATR-FTIR spectroscopy;
streaming potential;
permeability measurements; and,
tensile strength at break. Conclusions were that: the increased electronegativity and PVP dislodging
was related to enlargement of membrane pores;
FTIR spectroscopy findings suggest chain scission of
ethersulfone;
the deterioration of the mechanical strength of treated
membranes indicates a loss of membrane integrity; and,
the cleaning process substantially affects the
performance and surface properties of the PES
membrane. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 500 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 11/01/2007 |
