Effect of ionic environment on the crossflow microfiltration behaviour of yeast suspensions
Özet
In this study, the effects of various metal ions, Al3+, Cu2+, Ni2+, Pb2+ and Na+, on the transient and steady-state crossflow microfiltration behaviour of dilute yeast cell suspensions are investigated. It is observed that in the presence of Pb2+ and Al3+ specific cake resistance decreases, while steady-state permeate flux increases. At the same concentration levels, cake resistance for Al3+ is lower compared with Pb2+. Microscopic examinations of the yeast suspension indicate higher levels of yeast cell aggregation in the presence of Al3+ than Pb2+. The specific cake resistance increases with increasing concentrations of Na+, Ni2+ and Cu2+ ions whereas the steady-state fluxes decrease. In these cases, cell aggregation is not present except when the concentration of Cu2+ is 0.4 mM. Consequently, at this concentration level, significant decrease in specific cake resistance is present. The order of the binding affinity of the metals to yeast cell is Al3+ > Pb2+ > Cu2+ > Ni2+ which is also reflected in the metal ion rejection under identical processing conditions. (C) 2002 Elsevier Science B.V. All rights reserved.
Anahtar kelimeler
Atıf için künye
Keskinler, B., Akay, G., Bayhan, Y. K., & Erhan, E. (2002). Effect of ionic environment on the crossflow microfiltration behaviour of yeast suspensions. JOURNAL OF MEMBRANE SCIENCE, 206(1-2), 351–360. https://doi.org/10.1016/s0376-7388%2801%2900773-6
BibTeX
@article{keskinler2002-178747,
author = {Keskinler, B and Akay, G and Bayhan, Yalçın Kemal and Erhan, E},
title = {Effect of ionic environment on the crossflow microfiltration behaviour of yeast suspensions},
journal = {JOURNAL OF MEMBRANE SCIENCE},
year = {2002},
volume = {206},
number = {1-2},
pages = {351--360},
issn = {0376-7388},
doi = {10.1016/s0376-7388(01)00773-6},
url = {https://akademik.atauni.edu.tr/yayinlar/178747-effect-of-ionic-environment-on-the-crossflow-microfiltration-behaviour-of-yeast}
}