Carbon footprint of the hot-dip galvanisation process using a life cycle assessment approach

This work presents the carbon footprint (CF) of two hot-dip galvanisation (HDG) installations located in Spain with differences galvanising capacity and manufacturing process. The study determines influence direct emissions (scope 1), from electricity production 2), indirect upstream downstream processes 3). results showed that steel primary zinc were principal contributors to CF. So, efforts should be focused on reducing impact raw material included scope 3. Furthermore, sensitivity analyses are presented: i) one kg types products, special high-grade redistilled zinc; ii) use coatings: for paint pre-printed steel. environmental impacts SHG higher than zinc, all categories due great heavy metals emission. protections under same level corrosion, a greater thickness is needed protect pieces, compared coating. sustainability assessment HDG industry recommends sought technology alternatives aimed at resource efficiency, such as recovery spent pickling baths, could provide desirable reduction associated usage waste treatment.