Currently I work on the biogeochemical reactions of shallow aquifers in response to CO2 leak from geological sequestration. The projects include: (1) conducting geophysical logging, pumping test, tracer test, CO2 push-pull experiment and geochemical reactive transport modeling in bedrock aquifers to understand the mineral dissolution and trace element release rates; (2) investigating microbial activities and their impact on trace metal release; (3) carrying out sediment incubation experiments in the lab to investigate the biogeochemical reactions under abiotic and biotic conditions; (4) developing diagnostic monitoring systems to assess the risk of shallow aquifer contamination from CO2 leaking.
I have been working on the hydrogeochemistry and risk assessment of groundwater contaminations in bedrock aquifers. The completed and ongoing projects include: (1) determine the occurrence and spatial pattern of arsenic contamination and its association with bedrock geology; (2) understand the source and mobilization mechanisms of arsenic in bedrock aquifers from interpretation and statistical analysis on chemistry data; (3) test the feasibility of predicting arsenic contamination in bedrock aquifers using logistic regression models; (4) examine the distribution of arsenic in groundwater, soil, and stream sediment at national, regional to local scales and their associations; (5) investigate the arsenic evolution in individual wells using borehole coring, logging , pumping test, and water sampling with packers; (6) investigate the occurrence, source and mobilization mechanisms of uranium and radon in bedrock aquifers.
I also worked on: (1) development of the strain rate method to estimate the duration of tectonic deformations; (2) studies of the evolution of structural geological systems in Songliao Basin, Hefei Basin, Kuche Basin, China to investigate the enriched zones of oil, natural gas, and CO2.
Editorial Board member of "American Journal of Environmental Sciences"