India 2010 - 3rd International Perspective on Current & Future State of Water Resources & the Environment
January 5-7, 2010, Chennai, India.
http://content.asce.org/conferences/india2010/index.html
Dr. Nedunuri presented a paper on modeling of lead transport in phosphorus amended soils. Metal contamination of ground water is still a major environmental concern even though mining for metals has been abandoned in several places across the world. The leaching of lead to groundwater from the vadose zone was modeled as part of the study. The overall modeling involved solving multi-component transport equations for lead with the background ions in soil pore water when multiple solid phases of lead and phosphorus are either precipitating or dissolving. The choice of convergence algorithms to solve the resulting PDE, non-linear AE systems based on soil chemistry was found to be critical in solving these problems, particularly so when stability issues are confronted due to the presence of multiple solid phases controlling the composition of the pore water.
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