Tungsten compounds are used in several applications that provide environmental benefits. For example, various tungsten species are used to prepare catalysts for use in the petrochemical industry. These catalysts serve to improve the yields of highly desirable components in gasoline and reduce environmentally harmful by-products, such as sulphur and nitrogen compounds.  More recently tungsten compounds have found increasing use as a catalyst for the reduction of nitrogen oxide emissions from exhaust gases. Tungsten compounds also have potential clean energy applications such as photovoltaic cells and fuel cell technologies.

In addition to papers describing representative environmental applications, this section also includes papers on sustainablity, recycling, and life cycles asessments of tungsten manufacturing, use, and recycling.