A Review on Simplified Image Analysis Method for Measuring LNAPL Saturation Under Groundwater Table Fluctuation

The leaking from surface spills and underground storage tanks of various light non-aqueous phase liquids (LNAPLs) caused hazardous contamination to the subsurface system, especially in case of groundwater table fluctuations. The toxicity of these compounds has made infeasible field studies and gets a replacement with laboratory studies. Researchers have recently become very interested in using image analysis techniques to measure the saturation migration of groundwater and LNAPLs. Over the last decade, the simplified image analysis method (SIAM) has become increasingly popular. SIAM has been proved to be a suitable and effective tool for characterization and measuring LNAPL migration in the subsurface system. This research introduces a review of the recent studies and published on the simplified image analysis method for LNAPL migration measurements. The experimental approaches in this study can be viewed as an important intermediary between column studies and tank studies. Besides discussion on the research efforts, recommendations for future research are provided.