A two-step method was used to load TiO 2 on a cement matrix, and zeolite chosen as intermediate support. @Zeolite composite coated photocatalytic cement-based material (PCM) prepared. Some advanced characterization technologies including X-ray diffraction (XRD), scanning electronic microscopy (SEM), energy dispersive spectroscopy (EDS), BET specific surface area (SSA) test were applied characte...

Abstract This study compared 3 commonly used quenching agents for dechlorinating samples prior to disinfection byproduct (DBP) analysis under typical drinking water sampling conditions a representative suite of chlorination byproducts. Ascorbic acid and sodium sulfite quenched the residual free chlorine below detection within 5 seconds. Ammonium chloride did not quench with up 70% molar excess,...

Sea level rise and the failure of subsided western islands are likely future conditions for the Sacramento-San Joaquin Delta. This study explores the current and long-term effects of changes in the Delta’s water quality on drinking treatment costs for alternative disinfection and additional disinfection byproduct (DBP) precursor removal. Current and likely future Delta water qualities were inve...

In July 2015, a municipal health department in Ohio received complaints of respiratory and ocular symptoms from patrons of an indoor waterpark resort. In response, the health department conducted an online survey in August 2015 through which 19 (68%) patron and employee respondents reported eye burning, nose irritation, difficulty breathing, and vomiting. On August 11, 2015, the health departme...

This project summary highlights recent findings from research undertaken to develop improved methods to assess potential human health risks related to drinking water disinfection byproduct (DBP) exposures. The primary objective of this research was to examine the utility of routinely collected monitoring data to estimate individual-level exposures in epidemiological studies. Another specific ai...