Filtration

• Experiments demonstrate the multifunctionality of shock electrodialysis. • Besides deionization and filtration, nanoparticles can be separated by charge. • Bacteria in the feedwater are either filtered or killed by large electric fields.

Although current microbial risk assessment models assume that microorganisms are randomly dispersed within drinking water samples, experimental findings indicate that ‘clumping’ or clustering of microorganisms is possible. Research results indicate clustering is positively correlated with turbidity.

Suspended particles and dissolved solids in seawater during desalination process have been known to cause colloidal fouling in membranes. The membrane filtration-differential mobility analyzer (MF-DMA) counting technique has been developed to quantify suspended nanoparticles and dissolved solids in

In this study, titanium tetrachloride (TiCl4), titanium sulfate (Ti(SO4 )2 ) and ferric chloride (FeCl3) flocculation as a pretreatment to seawater reverse osmosis (SWRO) were investigated. Their ability to remove turbidity, seawater organic matter (SWOM) and controlling the feed water quality of SW

Starch hydrolysates were prepared by enzymatic hydrolysis with a -amylase and mixture of glucoamylase and pullulanase. Additionally the so-called filtration enzyme action (lysophospholipase) was introduced for starch hydrolysates production. Enzymatic hydrolysates were purified on filtration unit (A

Nanofiltration membrane bioreactor (NF-MBR) was proposed to provide quality effluent free of virus and most large organic substances. The dissolved organic matter (DOM) in soluble microbial products (SMP), loosely bound extracellular polymeric substances (LBEPS) and tightly bound extracellular polym

In an effort to make wastewater recycling risk-free, this research investigated the feasibility of using a waste material as filter for the removal of humic substances (HS), and ultimately the toxic hydrophobic organic compounds (HOC) attached to them. Based on the results of earlier studies, labora

A process for purifying wastewaters containing heavy and toxic metals such as cadmium and zinc by the complexation–filtration process was studied. From previous research, diethylaminoethyl cellulose (DEAE23) was selected as the complexing agent. The experiments were carried out in a Millipore ultraf

The filtration tests of electrolyte solutions performed with different ceramic membranes show that salt rejection depends on pH, salt nature and concentration. A simple correlation between streaming potential and rejection rates exits and confirms that streaming potential is a relevant parameter to

Arsenic contamination of drinking water is a concern in many parts of the world. In the United States, the Environmental Protection Agency recently reduced the maximum contaminant level of arsenic in drinking water from 50 to 10 µg/L (ppb). In Bangladesh the arsenic concentration in drinking water c