JoVE Video Dataset

Subsurface chemical, geochemical, and microbiological interactions, such as reactive mineral formation, gas generation, and contaminant sorption, play a critical role in shaping remediation strategies. However, evaluating these processes at the field scale is often limited by the expense and invasiveness of traditional sampling methods. The mineral trap sampler offers a practical, low-cost alternative for in situ monitoring of reactive mineral formation without requiring additional drilling or core extraction. Deployed within the screen interval of a monitoring well, the sampler passively collects mineral precipitates and microbial biomass over a period of at least thirty days. Once retrieved, the sampler is vacuum sealed and transported on ice to a laboratory for analysis using standard commercial techniques. This innovation enables scientists and engineers to assess both the rate and spatial distribution of mineral precipitation, providing valuable insights into subsurface conditions. By delivering actionable data on mineral formation and microbial activity, the mineral trap sampler supports performance evaluations and helps guide optimization strategies for remediation systems. Its simplicity and affordability make it a useful tool for improving site characterization and long-term management.