This paper overviews the development of the anthraquinone auto-oxidation （AO） process for the pro- duction of hydrogen peroxide in China and abroad. The characteristics and differences between the fixed-bed and fiui...This paper overviews the development of the anthraquinone auto-oxidation （AO） process for the pro- duction of hydrogen peroxide in China and abroad. The characteristics and differences between the fixed-bed and fiuidized-bed reactors for the AO process are presented. The detailed comparison indicates that the production of hydrogen peroxide with the fluidized-bed reactor has many advantages, such as lower operation cost and catalyst consumption, less anthraquinone degradation, higher catalyst utilization efficiency, and higher hydrogenation efficiency. The key characters of the production technology of hydrogen peroxide based on the fluidized-bed reactor developed by the Research Institute of Petroleum Proces- sing, Sinopec are also disclosed. It is apparent that substituting the fluidized-bed reactor for the fixed-bed reactor is a major direction of breakthrough for the production technology of hydrogen peroxide in China.展开更多
The recovery of rare-earth metals(REMs)is of great economic and environmental interest,because of their high market prices and various industrial applications.Recently,with the increasing demand for high-purity rare-e...The recovery of rare-earth metals(REMs)is of great economic and environmental interest,because of their high market prices and various industrial applications.Recently,with the increasing demand for high-purity rare-earth compounds,the separation and purification of these elements have gained considerable attention.The bio/adsorption process has been considered an alternative to recover these elements,by its simplicity,low cost and efficiency for recovery of REMs at low concentrations.This review article presents the recent progress regarding REM bio/adsorption published literature in batch system by different non-conventional bio/adsorbents,as well as a critical analysis of the technological challenges to be faced and future prospects.For this purpose,the best application model(isotherm,kinetics),thermodynamic quantities and selection of eluents for desorption studies are also discussed.Additionally,in this review,the application of different bio/adsorbent materials were reviewed extensively in terms of the removal and recovery of REMs in continuous fixed-bed adsorption and regeneration cycles.Finally,future aspects in bio/adsorption research and prospects for commercial applications were discussed.展开更多
文摘This paper overviews the development of the anthraquinone auto-oxidation （AO） process for the pro- duction of hydrogen peroxide in China and abroad. The characteristics and differences between the fixed-bed and fiuidized-bed reactors for the AO process are presented. The detailed comparison indicates that the production of hydrogen peroxide with the fluidized-bed reactor has many advantages, such as lower operation cost and catalyst consumption, less anthraquinone degradation, higher catalyst utilization efficiency, and higher hydrogenation efficiency. The key characters of the production technology of hydrogen peroxide based on the fluidized-bed reactor developed by the Research Institute of Petroleum Proces- sing, Sinopec are also disclosed. It is apparent that substituting the fluidized-bed reactor for the fixed-bed reactor is a major direction of breakthrough for the production technology of hydrogen peroxide in China.
基金Project supported by the Coordination for the Improvement of Higher Education Personnel(CAPES)National Council for Scientific and Technological Development(CNPq)grant 2017/18236-1,Sao Paulo Research Foundation(FAPESP).
文摘The recovery of rare-earth metals(REMs)is of great economic and environmental interest,because of their high market prices and various industrial applications.Recently,with the increasing demand for high-purity rare-earth compounds,the separation and purification of these elements have gained considerable attention.The bio/adsorption process has been considered an alternative to recover these elements,by its simplicity,low cost and efficiency for recovery of REMs at low concentrations.This review article presents the recent progress regarding REM bio/adsorption published literature in batch system by different non-conventional bio/adsorbents,as well as a critical analysis of the technological challenges to be faced and future prospects.For this purpose,the best application model(isotherm,kinetics),thermodynamic quantities and selection of eluents for desorption studies are also discussed.Additionally,in this review,the application of different bio/adsorbent materials were reviewed extensively in terms of the removal and recovery of REMs in continuous fixed-bed adsorption and regeneration cycles.Finally,future aspects in bio/adsorption research and prospects for commercial applications were discussed.
