In one study, several different inorganic salts were used to clean artificially fouled RO membranes and proved that NaCl salt solution can efficiently clean fouled RO membranes (Lee and Elimelech 2007).
Recently, a high concentration of common salt (NaCl) has been successfully used to prevent fouling (Liberman and Liberman 2005; Liberman et al. 2007; Qin et al. 2009, 2010) as well as clean fouled RO membranes (Lee and Elimelech 2007).
Figure 4 shows high resolution SEM images of clean, partially fouled and extensively fouled resin particles at progressively higher magnifications.
The time and space distribution of the labeled BSA within the resin particles is recorded in situ in order to facilitate a comparison between clean, partially fouled and extensively fouled resin.
This was done in order to allow a direct comparison of the spatial location of BSA within resin particles during protein uptake between the clean, partially fouled and extensively fouled samples over the 90-min experiments.
The purpose of the live uptake experiments was to conduct a direct comparison between the clean, partially fouled, and extensively fouled resin based on their intra-particle radial light intensity profiles, during uptake of a BSA reporter molecule in a packed bed using CLSM.
Are they mixing clean and foul water?
Knicks point guard Stephon Marbury called it "just a good, clean, hard foul".
But at the same time, it was a clean, hard foul and Twin doesn't have a malicious bone in his body".
(Ages 12 and up) Lipsyte's pitch-perfect young adult novel follows a jaded but likable suburban kid who wants only to play center field, where it's "open and clean, no foul lines or crazy angles".
