Microbial reduction of Cr(VI) in the presence of Ni, Cu and Zn by bacterial consortium enriched from an electroplating contaminated site

Aluminum-Porphyrin Metal–Organic Frameworks for Visible-Light Photocatalytic and Sonophotocatalytic Cr(VI) Reduction

“…Accordingly, an effective strategy to reduce or eliminate Cr­(VI) contamination is converting Cr­(VI) to Cr­(III) . At present, various Cr­(VI) reduction techniques (such as chemical reduction, electrical reduction, and microbial reduction) have been applied to this field. − Compared with these methods, photocatalytic reduction of Cr­(VI) to Cr­(III) embodied economic, renewable, and clean characteristics. Some inorganic semiconductor catalysts (e.g., TiO 2 , CdS, and ZnO) have been used for the photocatalytic reduction of Cr­(VI). − However, there are disadvantages such as wide band gap, low catalytic activity, and the possibility of secondary pollution. , Therefore, it is crucial to find a new type of photocatalyst.…”