Selective Dissolution and Recovery Technology for Vinyl Chloride Resin: A Shift in Separation Technology in Response to the Era of Mixed Waste Materials Late 1990s to Early 2000s

Selective Dissolution and Recovery Technology for Vinyl Chloride Resin: A Shift in Separation Technology in Response to the Era of Mixed Waste Materials Late 1990s to Early 2000s
The technology for selective dissolution and recovery of vinyl chloride resin attracted attention from the late 1990s to the early 2000s, as the limits of recycling construction waste became clear. This technique, in which special chemicals are added to vinyl chloride products to selectively dissolve and recover only the resin component, was developed in Europe ahead of other countries, and was at the stage of being considered for demonstration introduction in Japan as well. At that time, a large amount of vinyl chloride resin was used mainly for building materials such as flooring and piping, and at the time of dismantling, the waste material was a mixture of different types of materials. The selective dissolution technology is characterized by its ability to recover high purity through chemical separation, rather than mechanical separation. Against the backdrop of the forthcoming enforcement of the Construction Recycling Law, this technology was positioned as an embodiment
of the separation concept for the era of mixed waste materials, showing a treatment route that does not depend on incineration or landfill.