WebWhen the concentration of K 2 S 2 O 8 was 8.0 g/L, the reaction temperature was 70 °C and the pH value of wastewater was less than 6, the COD value of simulated printing and dyeing wastewater were reduced from 18 000 to 1 458 mg/L with a removal rate of 91.9%, the removal rate of PVA could reach 98.0% and the reduction rate of Cr(VI) was 94.3%.

Removal of Cr(VI) from wastewaters in a tubular electrochemical reactor

WebIt is inferred that beside catalyzing the reduction of Cr(VI), the high surface area facilitates the Cu-Cu 2-x S/C to efficiently adsorb residual Cr(VI) and yielded Cr(III). Therefore, the as … WebHexavalent chromium Cr(VI) is a highly toxic groundwater contaminant. In this study, we demonstrate a selective electrochemical process tailored for removal of Cr(VI) using a hybrid MOF@rGO nanomaterial synthesized by in situ growth of a nanocrystalline, mixed ligand octahedral metal–organic framework with cobalt metal centers, … thrasio c/o

Free Water As Catalyst

WebRapid industrialization leads to increased wastewater discharge encompassing hexavalent chromium (Cr(VI)), which leads to serious environmental problems of toxicity and potential carcinogenicity. Removal of these species is normally carried out by ion-exchange, precipitation, membrane filtration, sorption, photocatalytic reduction, etc. WebDec 7, 2024 · Electrochemical reduction is an increasingly common treatment approach for streams that contain Cr(VI). This process applies an electrical current to metal electrodes, causing them to dissolve and release ions into the solution. The ions then oxidize and, in the process, reduce Cr(VI) to a more easily dissoluble Cr(III). WebFeb 8, 2024 · Electrochemical reduction with a flow-through electrode system (FES) has been regarded as an effective method for water decontamination. However, under a direct voltage (DV) power supply, the reduction efficiencies were strongly limited by the gas bubbles generated in porous electrodes and the electrostatic repulsion between the … unearthing 2015