Abstract
<jats:p>Currently, new materials are being developed to remove contaminants from wastewater by combining materials to improve their individual properties. This chapter describes the production of the zinc oxide (ZnO) and carbon composite. The ZnO was synthesized by electrolysis, adding Spend Coffee Grounds (SCG) to the electrolytic medium, and finally calcined at 400 °C for 30 min. ZnO, carbon, and the composite were synthesized and characterized. Scanning Electron Microscopy found that ZnO deposits in the pores of the carbon; Infrared Spectroscopy identified bonds associated with carbon and ZnO; X Ray Diffraction yielded a diffractogram with lower intensity compared to that of ZnO (JPDS-361451), due to the synthesis of amorphous carbon; μ-RAMAN Spectroscopy detected characteristic bonds of both materials; finally, the isoelectric point of the composite is 7.3, which will allows working with sorption in neutral systems.</jats:p>