Catalytic wet air oxidation (CWAO) is classified as an advanced oxidation process, which proved to be highly efficient for the removal of emerging organic pollutant bisphenol A (BPA) from water. In this study, BPA was successfully removed in a batch-recycle trickle-bed reactor over bare titanate nanotube-based catalysts at very short space time of 0.6 min g(CAT) g(-1). The as-prepared titanate nanotubes, which underwent heat treatment at 600 degrees C, showed high activity for the removal of aqueous BPA. Liquid-phase recycling (5- or 10-fold recycle) enabled complete BPA conversion already at 200 degrees C, together with high conversion of total organic carbon (TOC), i.e., 73 and 98 %, respectively. The catalyst was chemically stable in the given range of operating conditions for 189 h on stream.
机构:
Department of Vehicle Engineering, Yung-Ta Institute of Technology & Commerce, Pingtung,909, TaiwanDepartment of Vehicle Engineering, Yung-Ta Institute of Technology & Commerce, Pingtung,909, Taiwan
Hung, Chang-Mao
Lin, Wei-Bang
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Department of Mechanical Engineering, Chinese Military Academy, Kaohsiung,830, TaiwanDepartment of Vehicle Engineering, Yung-Ta Institute of Technology & Commerce, Pingtung,909, Taiwan
机构:
Washington Univ, Chem React Engn Lab, Dept Chem Engn, St Louis, MO 63130 USAWashington Univ, Chem React Engn Lab, Dept Chem Engn, St Louis, MO 63130 USA
Guo, J
Al-Dahhan, M
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Washington Univ, Chem React Engn Lab, Dept Chem Engn, St Louis, MO 63130 USAWashington Univ, Chem React Engn Lab, Dept Chem Engn, St Louis, MO 63130 USA