A recently calibrated urban runoff model, the Source Loading and Management Model (SLAMM), is used to compare the cost-effectiveness of using source area and regional stormwater treatment practices. The demonstration is done for the totally urbanized Lake Wingra watershed in Madison, Wisconsin. The goal is to retrofit practices that are able to reduce the annual total suspended solids load by 4...

Photocatalytic efficiency of ZnO nanorods has been investigated with respect to the concentration brazilein. Brazilein modified were prepared by an impregnation process 1.0%w/v, 2.5%w/v, and 5.0%w/v brazilein solution. In order correlate variation in distributions photocatalytic performance, phase composition, optical properties, photo-catalytic activities different concentrations have compared...

Novel highly asymmetric zinc tetraazaporphyrin (TAP) derivatives (Zn-tri-TAPNc and Zn-tri-PcNc) with one carboxyl and three tert-butyl peripheral substituent groups were synthesized. A highly asymmetric zinc phthalocyanine (ZnPc) derivative (Zn-tri-PcNc) has a benzo-annelated ring which contains tribenzonaphtho-condensed tetraazaporphyrin with the same peripheral substituents as Zn-tri-TAPNc. A...

In our preliminary study, we had prepared quaternary semiconductor powder of AgxInxZnyS2x+y, a photocatalysts with a high activity. In this study, we further extended the investigation, changed the amount of indium in a series of solid solutions, and increased the photochemical activity substantially. With little adjustment of the ratios of [In]/[Ag], the hydrogen production rate of the photoca...

Zinc coatings are commonly used to protect steel from different types of corrosion. However, zinc is an electrochemical reactive metal; applying surface treatment galvanized materials usually necessary increase the system's lifetime. An alternative method for improving service life these use corrosion inhibitors. Nicotinic acid, chemically formulated as C 5 H 4 NCO, a water-soluble vitamin. It ...