Spring 2021 Resources and Publications
Months-long spike in aqueous arsenic following domestic well installation and disinfection: short-and long-term drinking water quality implications
Erickson, M.L., E.D. Swanner, B.A. Ziegler and JR Havig
Journal of Hazardous Materials 2021
Exposure to high concentration geogenic arsenic via groundwater is a worldwide health concern. Well installation introduces oxic drilling fluids and hypochlorite (a strong oxidant) for disinfection, thus inducing geochemical disequilibrium.
Targeted wetland restoration could greatly reduce nitrogen pollution
Wetlands remove nitrate pollution from water effectively. An analysis shows that this effect is constrained in the United States by the distribution of wetlands, and could be increased by targeting wetland restoration to nitrate sources.
A velocity-variation-based formulation for bedload particle hops in rivers
Wu, Z, A. Singh, E. Foufoula-Georgiou, M. Guala, X. Fu Xudong and Guangqian Wang
Journal of Fluid Mechanics 2021
Bedload particle hops are defined as successive motions of a particle from start to stop, characterizing one of the most fundamental processes of bedload sediment transport in rivers. Although two transport regimes have been recently identified for short and long hops, respectively, there is still the lack of a theory explaining the mean hop distance–travel time scaling for particles performing short hops, which dominate the transport and may cover over 80 % of the total hop events.
Evaluation of chloride contributions from major point and nonpoint sources in a northern U.S. state
Overbo, A., S. Heger, and J. Gulliver
Science of the Total Environment 2021
Chloride pollution of groundwater and surface water resources is an environmental concern in many regions. While use of road salt for winter road maintenance is known to be a major source of chloride in the environment, limited research has investigated the environmental impacts of chloride discharged from water softeners, particularly in areas with hard water.