in this research, the chloroform (chcl3) removal effectiveness of two water treatment systems including membrane technology and granular activated carbon (gac) adsorption were studied. two bench-scales were designed and set up: 1) nanofiltration (nf) spiral-wound modules and 2) gac adsorption column. chloroform was considered as trihalomethanes (thms) basic indicator compound. the inlet and out...

The purpose of this article is to describe the Rampant Caries Control Program established in the operative dentistry third-year clinic at the University of Iowa College of Dentistry. This program represents a new approach to the management of high caries risk and high caries activity patients who come to the school. The patients are referred initially to the third-year operative clinic only for...

In this paper, the feasibility of using an X-ray tube instead radioisotope sources for measuring volume fractions gas, oil, and water in two typical flow regimes three-phase flows, namely, annular stratified, is evaluated. This study’s proposed detection system composed tube, a 1 inch × NaI detector, one Pyrex-glass pipe to model different regimes, stratified. Group method data handling (GMDH),...

The requirement for higher quality drinking water necessitates the application of more efficient water treatment techniques. Nanofiltration is one promising option for enhanced water treatment, for example, in enhanced organic matter removal. The characteristics of different nanofiltration membranes vary remarkably, and the selection of a membrane has to be made according to the requirements of...

ÐThe need for readily biodegradable organic matter to support denitri®cation and enhanced biological phosphorus removal (EBPR) can be satis®ed using external or internal carbon sources. This paper examines the production and removal of volatile fatty acids (VFAs), mainly acetic acid, and other hydrolyzed products from sludge using hydrothermal treatment at subcritical (<3748C) and supercritical...

The use of standalone titanium dioxide (TiO2) photocatalytic treatment and one that is combined with coagulation process to treat natural organic matter (NOM) from two different water sources (synthetic water containing 10 ppm of humic acid and water samples sourced from Myponga reservoir) is investigated herein. In the combined process, the water samples were treated with a novel composite coa...