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Zhe Deng,Hongxian Fan,Chunxing Lan,Songmei Zhang,Gang Li 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.108 No.-
Simultaneous electro-transfer of vanadium slag (V-slag) and electrochemical degradation of corncob ligninbetween two graphite electrodes in sulfuric acid solution were proposed. The electrochemical performanceof V-slag dissolved by sulfuric acid solution on the graphite electrode was tested by cyclicvoltammetry (CV) and linear polarization (LP) curves. By electrochemical transfer of Fe2+/Fe3+ andVO2+/VO2 + couple, it was found that iron and vanadium in V-slag played an important role in electrocatalysis. SEM, EDS and FT-IR were conducted to characterize the morphology, surface composition and thefunctional groups of lignin residues. By the inductively coupled plasma spectrometer (ICP) analysis,the cumulative removal rates of Fe and V in V-slag could reach up to 61.3% and 52.6%, respectively aftermulti rounds reaction. 30 kinds of compounds were identified in the process of degradation via GC–MSanalysis. These results provided a new process for valorizing two widespread waste materials, V-slag andcorncob lignin.