The project aims to develop innovative biobased and eco-friendly derivatives for leather tanning. Specifically, our goal is to create derivatives with antimicrobial properties as additives for tanning, and to develop environmentally friendly systems with tanning capabilities.The tanning industry plays a crucial role in Italy. Tanning involves a series of chemical processes that make leather non-putrescible and stable. Basic chromium sulfate, Cr(OH)SO4, is the most widely used tanning agent. ISTAT data indicate that for the production of Chromium (III) salts necessary for leather tanning processes, Italy imports tens of thousands of tons of hexavalent chromium salt (Cr VI). This fact highlights a significant environmental issue: the high environmental risk associated with the transport and storage of the raw material. From the above, it is clear how important it is to study alternative tanning processes to the use of Chromium (III).In this PhD project, we propose new research aimed at developing new classes of tannins and other tanning additives that are metal-free and/or derived from biomass, with the goal of reducing and/or eliminating the use of Cr(III) salts in tanning processes. Particular attention will be focused on the use of environmentally friendly polyphenols and other organic molecules derived by biomass. The project will be financially supported and conducted in collaboration with FGL International SPA from Santa Croce sull'Arno (PISA).

A degree in Chemistry or Biology. Proficiency in organic synthesis chemistry laboratory techniques and familiarity with NMR and IR characterization methods.

Composition of the research team: n° 2 associate professors, n° 2 postdoc students, n° 3 PhD student. We have the opportunity to conduct the research entirely in-house by using the facilities provided by University of Salerno, or in collaboration with industrial research laboratories for application studies. On this topic, our group has active collaborations with foreign universities, research centers and chemical companies.FGL International Stanta Croce sull'Arno (PISA). National Research & Development Institute for Textiles and Leather, ICPI Research Division, Bucharest, Romania, prof. Elena Badea.