Before you all waste any more bandwidth on reinventing the wheel, here is a comprehensive study about deicing that contains every conceivable method :
https://www.epa.gov/sites/production...g-pds-2000.pdf
SLC has used a recycling system for years.This report is from 2017 but it was in place well before that time :
https://slcairport.com/blog/2017/11/...deicing-fluid/