TY - JOUR
T1 - The role of synthetic membrane pre-treatment in influencing filtration performance over multiple operational cycles
AU - Jones, Sarah A
AU - Pihlajamäki, A.
AU - Bird, M. R.
PY - 2012
Y1 - 2012
N2 - Manufacturers of polymeric membrane filters used for treating food streams routinely recommend that they are chemically cleaned prior to first use. In this paper, two pre-treatment methods are compared for the filtration of a spent sulphite liquor [SSL] (17.8 wt.% dry solids) using a 20 kg mol−1 molar mass cut off (MMCO) fluoropolymer membrane. In an extension of previous work that considered the effect of the application of a pre-treatment protocol over a single operational cycle, this paper reports the effect of pre-treatment protocols over four complete fouling and cleaning cycles. The pre-treatment methods evaluated were the conditioning with water at 60°C only [Protocol 1], and the conditioning with water at 60°C followed by cleaning with 0.5 wt.% NaOH [Protocol 2]. Results are presented that demonstrate that for the system examined, the positive effect of the NaOH pre-treatment protocol diminished after three complete operational cycles, and disappeared after four cycles.
AB - Manufacturers of polymeric membrane filters used for treating food streams routinely recommend that they are chemically cleaned prior to first use. In this paper, two pre-treatment methods are compared for the filtration of a spent sulphite liquor [SSL] (17.8 wt.% dry solids) using a 20 kg mol−1 molar mass cut off (MMCO) fluoropolymer membrane. In an extension of previous work that considered the effect of the application of a pre-treatment protocol over a single operational cycle, this paper reports the effect of pre-treatment protocols over four complete fouling and cleaning cycles. The pre-treatment methods evaluated were the conditioning with water at 60°C only [Protocol 1], and the conditioning with water at 60°C followed by cleaning with 0.5 wt.% NaOH [Protocol 2]. Results are presented that demonstrate that for the system examined, the positive effect of the NaOH pre-treatment protocol diminished after three complete operational cycles, and disappeared after four cycles.
UR - http://www.scopus.com/inward/record.url?scp=84861426968&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1080/01496395.2011.648471
U2 - 10.1080/01496395.2011.648471
DO - 10.1080/01496395.2011.648471
M3 - Article
SN - 0149-6395
VL - 47
SP - 1119
EP - 1128
JO - Separation Science and Technology
JF - Separation Science and Technology
IS - 8
ER -