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论文类型：期刊论文

发表时间：2008-09-22

发表刊物：SEPARATION AND PURIFICATION TECHNOLOGY

收录刊物：SCIE、EI、Scopus

卷号：62

期号：3

页面范围：565-570

ISSN号：1383-5866

关键字：microwave; catalytic wet air oxidation (CWAO); petroleum wastewater; granular active carbon

摘要：A microwave (MW)-assisted catalytic wet air oxidation (CWAO) process under low temperature (150 degrees C) and low pressure (0.8 MPa) was investigated to treat heavily contaminated petroleum wastewater from oil refining industry. The MW-CWAO experiments were carried out in a reconstructive MW autoclave, using GAC (5 wt.%) as catalyst. The experimental temperature was kept at 150 degrees C and oxygen was supplied into reactive system with 0.8 MPa pressure. The results demonstrated that more than 90% of chemical oxygen demand (COD) removal was obtained and the biodegradability of BOD5/COD ratio was increased from 0.04 to 0.47 within 30 min, indicating a significant improvement of biodegradability for the solution, which is beneficial for the further biotreatment of petroleum wastewater. The reaction kinetics show that reactive activation energy for COD conversion was calculated to be 25.11 kJ/mol. This MW-assisted CWAO approach may have significant potential in application for treatment of industrial wastewater. (c) 2008 Elsevier B.V. All rights reserved.