Transformation Processes of Metals in Urban Road Dust: Implications for Stormwater Reuse

Description

This book discusses the physicochemical changes (transformations) that metals deposited on urban road surfaces undergo during dry weather periods, in order to provide insights into their potential impacts on stormwater quality. Based on extensive field experiments, and laboratory and data analyses, it examines transformation characteristics of metals with respect to the particle size of road dust, antecedent dry days and land uses. Further, it proposes a new risk-assessment methodology, improving the original human health-risk indices based on the transformation characteristics and potential bioavailability of metals in order to evaluate the risks posed by metals in stormwater. This book is of interest to researchers and decision-makers developing appropriate pollution mitigation measures to enhance the quality of stormwater, targeting the effective reuse of stormwater in urban areas. Front Matter ....Pages i-vi Metals in the Urban Stormwater Environment (Ayomi Jayarathne, Buddhi Wijesiri, Prasanna Egodawatta, Godwin A Ayoko, Ashantha Goonetilleke)....Pages 1-10 Research Design for Investigating Metal Transformations on Urban Roads (Ayomi Jayarathne, Buddhi Wijesiri, Prasanna Egodawatta, Godwin A Ayoko, Ashantha Goonetilleke)....Pages 11-20 Metal Transformation and Stormwater Quality (Ayomi Jayarathne, Buddhi Wijesiri, Prasanna Egodawatta, Godwin A Ayoko, Ashantha Goonetilleke)....Pages 21-32 Assessment of Human Health Risks from Metals in Urban Stormwater Based on Geochemical Fractionation and Bioavailability (Ayomi Jayarathne, Buddhi Wijesiri, Prasanna Egodawatta, Godwin A Ayoko, Ashantha Goonetilleke)....Pages 33-43 Practical Implications and Recommendation for Future Research (Ayomi Jayarathne, Buddhi Wijesiri, Prasanna Egodawatta, Godwin A Ayoko, Ashantha Goonetilleke)....Pages 45-48 Back Matter ....Pages 49-50