李杰

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:电气工程学院

学科:环境工程. 电工理论与新技术. 高电压与绝缘技术

办公地点:大连理工大学电气工程学院静电所

扫描关注

论文成果

当前位置: 中文主页 >> 科学研究 >> 论文成果

Design and application of an up-scaled dielectric barrier discharge plasma reactor for regeneration of phenol-saturated granular activated carbon

点击次数:

论文类型:期刊论文

发表时间:2012-07-19

发表刊物:SEPARATION AND PURIFICATION TECHNOLOGY

收录刊物:SCIE、EI

卷号:95

页面范围:73-79

ISSN号:1383-5866

关键字:Up-scaled reactor; Dielectric barrier discharge plasma; Granular activated carbon; Regeneration; Degradation

摘要:An integrated granular activated carbon (GAC) adsorption and dielectric barrier discharge (DBD) plasma degradation process was applied for treatment of organic wastewater. A methodology of scaling up the DBD plasma reactor was proposed, and a technique for regenerating GAC using the up-scaled DBD reactor driven by bipolar pulsed power has been achieved. The mass of exhausted GAC being treated was 1200 g in each experimental process. The feasibility of GAC regeneration using the up-scaled reactor was systematical assessed by monitoring the GAC regeneration efficiency (RE) and phenol degradation on GAC at different operational parameters, such as pulse voltage, treatment time, air flow rate and water content of GAC. Under the optimized conditions (pulse voltage of 21 kV, treatment time of 60 min, air flow rate of 0.45 m(3)/h and GAC water content of 31%), RE and the phenol degradation reached 94% and 70%, respectively. After four adsorption-regeneration cycles, RE was still 32% higher than RE of untreated exhausted GAC. FTIR analysis proved the phenol decomposition on GAC after DBD treatment. In addition, TOC and COD removal of adsorbed phenol on GAC reached 49% and 58%, respectively. Effect of DBD plasma on the texture characteristic of GAC after several adsorption-regeneration cycles were investigated by adsorption of N-2 and Boehm titration. The results suggest that the up-scaled DBD reactor for GAC regeneration is feasible, and this technique for wastewater treatment provides us with an optimistic outlook for the practical application of this process. (C) 2012 Elsevier B.V. All rights reserved.