Comparative study of biofouling of NF modified membrane at SHAFDAN Academic Article uri icon

abstract

  • One of the critical factors limiting the use of membrane filtration for drinking water treatment is membrane fouling, the irreversible loss of system productivity caused by interactions between the membrane and various components in the process stream. Among the various kinds of fouling, biofouling is one of the most serious fouling problems. Biofouling is defined as accumulation of microorganisms-biofilms-on a surface of membranes at such a level that it causes operational problems. It is believed, that the first step in membrane biofouling is the attachment of bacterial cell to the membrane surface. Initial attachment is followed by cell growth and multiplication at the expense of soluble feed water nutrients or adsorbed organics. Bacteria comprising surface biofilms typically produce extracellular polymeric substances (EPS). EPS are considered as the key components of biofilms, because they …

publication date

  • November 1, 2005