Chromium recovery from tannery wastewater by zeolite-based materials: A circular and sustainable approach

The treatment of tannery wastewaters is crucial as they contain harmful substances that can lead to environmental and health issues, with chromium being the most concerning pollutant. Zeolites, a family of microporous crystalline materials, represent an effective method to remove chromium from tannery wastewaters, exploiting their adsorption and ion-exchange properties. In a circular view, the recovered Cr-based zeolites can potentially be used in catalytical applications or to produce sustainable ceramic pigments.