Contaminant back-diffusion from low-permeability layers as affected by groundwater velocity: A laboratory investigation by box model and image analysis - ScienceDirect
Transient Analysis of Contaminant Diffusion in the Wellbore of Shale Gas Horizontal Wells | SpringerLink
Back Diffusion Explained
HBD - "hydrogen ion back diffusion" by AcronymsAndSlang.com
img023.gif
NABD Definition: Net Acid Back Diffusion | Abbreviation Finder