منابع مشابه
Flux Decline in Ultrafiltration Processes
When a membrane filtration process such as ultrafiltration is used a fluxand yield-decline can be observed. The causes are i) concentration polarization (i.e. accumulation of retained solutes, reversibly and immediately occurring) and ii) fouling phenomena such as adsorption, pore-blocking and deposition of solidified solutes, a long-term, and more or less irreversible process. The result of bo...
متن کاملPhysical Backwash Optimization in Membrane Filtration Processes: Seawater Ultrafiltration Case
Seawater ultrafi ltration (UF) as a pretreatment of reverse osmosis (RO) process in a thermal power plant was investigated using a 100 kDa hollow fi ber membrane. The choice of the UF physical backwash conditions remains arbitrary or ensuing from a sensibility study. As the optimum must take into account the factors interactions, we led a response surface study to analy...
متن کاملCeramic Membranes in Hybrid Photocatalysis/ultrafiltration Processes
Division of Physical Chemistry, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems (IAMPPNM), NCSR Demokritos, 15310 Aghia Paraskevi, Attikis, Athens, Greece LCM – Laboratory of Catalysis and Materials – Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal Grupo de Fotocatálisis y ...
متن کاملComparison of humic acid rejection and flux decline during filtration with negatively charged and uncharged ultrafiltration membranes.
Increasingly stringent regulations for drinking water quality have stimulated the ultrafiltration (UF) to become one of the best alternatives replacing conventional drinking water treatment technologies. However, UF is not very effectively to remove humic acid due to the comparatively larger pore size compared to the size of humic acid. Fouling issue is another factor that restricts its widespr...
متن کاملA Neuro-Fuzzy Model for a Dynamic Prediction of Milk Ultrafiltration Flux and Resistance
A neuro-fuzzy modeling tool (ANFIS) has been used to dynamically model cross flow ultrafiltration of milk. It aims to predict permeate flux and total hydraulic resistance as a function of transmembrane pressure, pH, temperature, fat, molecular weight cut off, and processing time. Dynamic modeling of ultrafiltration performance of colloidal systems (such as milk) is very important for design...
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ژورنال
عنوان ژورنال: Desalination
سال: 1990
ISSN: 0011-9164
DOI: 10.1016/0011-9164(90)85023-4