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In this study, Cu(0) was synthesized with NaBH 4 as a reducing agent for Cu(II) and used to activate dissolved molecular oxygen (O 2 ) under acidic conditions. The Cu(0) synthesized had much higher activity than the purchased. The roles of Cu was clarified and the formation of reactive oxygen species was discussed through direct detection for the first time. By detecting the valence change of Cu...
In order to minimize chromium pollution, based on tracing the life cycle of chromium in whole leather wet-end processing, an integrated technology comprising of a novel salt-free and high-exhaustion chrome tanning process, modified chrome retanning, direct recycling of tanning wastewater and highly efficient removal of Cr from post-tanning floats was developed. The results indicated that, in the novel...
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