A Combined Selective Adsorption and Ozonation Process for VOCs Removal from Air

A new hybrid process combining adsorption and ozonation is examined as an alternative treatment for Volatile Organic Compounds (VOC). The physical adsorption of ozone was clarified on a ZSM‐5 zeolite. Oxidation of two industrial solvents was achieved on two zeolites and followed with temperature profiles and sub‐products detection. Total regeneration of the fixed bed was achieved with a complete mineralization of organic compounds. Detection and identification of sub‐products traces allowed us to suspect oxidation reactive species. A mass balance on oxygen showed that all the inlet ozone was used for organic compounds oxidation. A selective oxidation was achieved, allowing the separation and the recovery of minor compound.     

我国台西南附近构造沉降与沉积作用对气水合物成藏的可能控制

南中国海东北部大陆斜坡带上的海相沉积有适当的沉积厚度，处于适宜形成气水合物的温压域内，有一定的甲烷生成潜力。从台西南盆地的地震反射记录中，可以观察到气水合物存在的证据——似海底反射(BSR)，暗示了气水合物的广泛分布。台西南盆地的构造沉积格架与甲烷的生成和大量气水合物沉积可能存在直接联系；各种快速堆积的沉积体系(如滑塌块体、等深流沉积、浊积扇及三角洲)前缘，是天然气水合物富集的有利沉积相带，其中等深流沉积和滑塌块体推测为最有利气水合物聚集的沉积体。