Journal ArticleDOI
Fouling studies of capillary ultrafiltration membrane
Reads0
Chats0
TLDR
In this paper, the effect of various foulants (sodium alginate and humic acid) on the UF membrane was investigated in the range of 5-15ppm of various constitutes such as Iron, Manganese, and the organic foulants.Abstract:
Ultrafiltration (UF) membranes in capillary configuration are deployed in domestic water purification with respect to removal of contaminants. Fouling is an inherent phenomenon in UF process and has been reported to cause decline in flux, reduces membrane life, etc. So, it has to be thoroughly studied in order to optimise the logistics of process operation. Considering the concentration of contaminants in different parts of India, the fouling studies investigations were carried out in the range of 5–15 ppm of various constitutes such as Iron, Manganese, and the organic foulants – sodium alginate and humic acid. Out of various parameters affecting fouling like feed pressure, feed temperature, feed pH, the effort was directed towards studying the effect of various foulants (and at different loadings) on the membrane. Results obtained from experiments suggest that the fouling caused by the organics (sodium alginate and humic acid) is higher than that of inorganics (iron and manganese). Iron caused hi...read more
Citations
More filters
Journal ArticleDOI
Hydraulic backwashing for low-pressure membranes in drinking water treatment: A review
Haiqing Chang,Heng Liang,Fangshu Qu,Baicang Liu,Huarong Yu,Xing Du,Guibai Li,Shane A. Snyder +7 more
TL;DR: In this paper, the backwash parameters of UF/MF membranes used in municipal water supplies are reviewed to provide more comprehensive data, which can improve backwash performance in full-scale drinking water and water reuse treatment plants.
Journal ArticleDOI
Effect of organic molecular weight distribution on membrane fouling in an ultrafiltration system with ozone oxidation from the perspective of interaction energy
TL;DR: In this paper, the effect of molecular weight distribution on ultrafiltration (UF) membrane fouling was investigated using humic acids, and the mechanism was explored by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory.
Journal ArticleDOI
Identifying the major fluorescent components responsible for ultrafiltration membrane fouling in different water sources.
TL;DR: Three-dimensional fluorescence excitation-emission matrix (EEM) coupled with parallel factor analysis (PARAFAC) showed that for the two lakes, only the C3 exhibited a strong correlation with membrane fouling, indicating that the protein-like substances were the major membrane foulants in the lake waters.
Journal ArticleDOI
Salt backwashing of organic-fouled ultrafiltration membranes: Effects of feed water properties and hydrodynamic conditions
TL;DR: Using NaCl solution as backwash water, the effects of feed water properties and hydrodynamic conditions on irreversible fouling caused by humic acid and sodium alginate were systematically investigated as discussed by the authors.
Journal ArticleDOI
Kinetic Modelling of Hydraulic Resistance in Colloidal System Ultrafltration: Effect of Physiochemical and Hydrodynamic Parameters
TL;DR: In this paper, the authors employed exponential kinetic model to describe the dynamic hydraulic resistance of skim milk ultrafltration at different feed rates (FR) (10, 30 and 46 L/min), transmembrane pressures (TMP) (0.03, 0.06 and 0.60), respectively.
References
More filters
Journal ArticleDOI
Fouling of Reverse Osmosis and Ultrafiltration Membranes: A Critical Review
Mattheus F. A. Goosen,Shyam S. Sablani,Hilal Al-Hinai,S.K.S. Al-Obeidani,R. Al-Belushi,D. Jackson +5 more
TL;DR: In this paper, the authors reviewed the literature on the fouling phenomena in reverse osmosis (RO) membrane systems, the analytical techniques used to quantify fouling, preventive methods, and membrane cleaning strategies and made specific recommendations on how scientists, engineers, and technical staff can assist in improving the performance of these systems through fundamental and applied research.
Journal ArticleDOI
Combined models of membrane fouling: Development and application to microfiltration and ultrafiltration of biological fluids
TL;DR: Five new fouling models that accounted for the combined effects of the different individual fouling mechanisms were generated and the combined caking and complete blockage model was the most useful, as it was able to provide good fits of both data sets, and provide good fit of each of the other individual model predictions.
Journal ArticleDOI
Model for colloidal fouling of membranes
TL;DR: In this paper, a mass transfer equation was proposed to predict the existence of a critical flux for ultrafiltration, reverse osmosis or microfiltration of large size colloids.
Journal ArticleDOI
Experimental study of ultrafiltration membrane fouling by sodium alginate and flux recovery by backwashing
TL;DR: In this paper, the evolution of membrane fouling by sodium alginate, a microbial polysaccharide, is studied in ultra-filtration, aiming at identifying the significance of distinct fouling mechanisms and their degree of reversibility by backwashing.
Journal ArticleDOI
A general approach to modelling membrane modules
James Marriott,Eva Sorensen +1 more
TL;DR: In this paper, mathematical models of hollow-fibre and spiral-wound membrane modules were developed from rigorous mass, momentum and energy balances and can be used to describe a generic membrane separation, in contrast to most existing models which are typically process specific and are only valid within a limited operating range.