Research Abstracts

! Chlorite (ClO2 ) is the dominant degradation by-product coming from chlorine dioxide reactions. Compliance to the maximum concentration of 200 µg/l, established by new Italian regulations for drinking water (D. Lgs. 31/2001), can be accomplished by reduction of chlorine dioxide dosage during water

Disinfection is a key treatment process for producing drinking water. However, it produces undesirable byproducts that may cause adverse health effects. Disinfection by-products (DBP) such as trihalomethanes (THMs) and haloacetic acids (HAAs) are considered potentially carcinogenic and have been rec

In this study, photoanodic chlorine generation and chlorate formation were investigated using a nanoporous TiO2 photo-electrode under an illumination intensity of 7.4 mW/cm2 UV and biased at +1.0 V vs. SCE. Chlorine formation increased over time finally reaching a steady-state concentration of 42 mg

Unplanned transportation systems near water resources have not only caused a dramatic population increase in the water catchment areas of Istanbul but also created major water pollution problems as a result of illegal settlement and industrial and agricultural activities. In this study, water qualit

Three different ion exchange resins were evaluated for their ability to remove dissolved organic matter (DOM) and reduce formation of disinfection byproducts (DBPs) formed during chlorination of surface waters sampled from the Intercoastal Waterway, Myrtle Beach, SC, USA (MB water), and the Tomhanno

This study evaluates the effectiveness of polyaluminium chloride (PACl) compared to aluminium sulphate (alum) and ferric chloride (FeCl3) to remove THM precursors and reduce THM formation potential of two samples (S1 and S2) from a surface water resource with low TOC (<3mg/l), high alkalinity (180 m

The photocatalytic removal of model humic and fulvic acids of different origins (terrestrial and aquatic) was investigated using TiO2 Degussa P-25 as the photocatalyst. The results were presented comparatively based on pseudofirst-order and the Langmuir–Hinshelwood kinetic models. The reaction rates

Water samples of different origins (Buyukcekmece and Omerli, Istanbul, Turkey, and Alento, Salerno, Italy) were treated by coagulation, ozonation, and coagulation followed by ozonation and photocatalysis. Disinfection by-products (DBPs) formation potential of raw and treated water samples was compar

EU Directive 98/83, which aims at achieving beneficial effects in the quality of water and in public health, has set standards for water intended for human consumption, monitoring requirements of the new standards, and strategies to take remedial action to address failures. The incorporation of the

Two different procedures, respectively aiming at the best allocation and managing of disinfection stations along water distribution systems, are presented, with the main objective of proposing a criterion to limit chlorine and disinfection by-product concentrations in the drinking water supplied to