全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

介质阻挡放电协同光催化处理挥发性有机物

DOI: 10.13336/j.1003-6520.hve.2015.10.047, PP. 3523-3528

Keywords: 挥发性有机物,介质阻挡放电,光催化,氧化硅,协同处理,处理效率

Full-Text   Cite this paper   Add to My Lib

Abstract:

挥发性有机物(volatileorganiccompounds,VOCs)是主要的室内空气污染物,传统的处理方法存在运行费用高或二次污染的问题。为了寻找一种处理效率高、能量利用率高的方法,创新性地将介质阻挡放电处理技术与光催化技术相结合,以介质阻挡放电过程中产生的低温等离子体代替单纯紫外光为光催化材料的驱动力,有效地降低了能耗;协同处理过程中最终产物为无毒的CO2、H2O等无机小分子,副产物少且无害。实验过程中将经过改性的光催化剂氧化硅担载在电极表面,在人工搭建的密室内成功地利用介质阻挡放电协同介质光催化处理VOCs,协同处理效率明显大于单独介质阻挡放电技术或光化催技术的处理效率。基于介质阻挡放电处理技术与光催化技术的原理分析,进一步研究了电极直径、温度、湿度、催化剂位置及数量等参数对处理效果的影响特点与规律,处理效率与电极直径、湿度负相关,与催化剂数量正相关,环境温度对协同处理效率无明显影响,催化剂担载于正极比负极的协同处理效率低。通过将光催化与介质阻挡放电相结合,使2者相互协同、优势互补,为进一步研究开发出一种处理效率高、能耗低、副产物少且无害的室内VOCs降解方法提供参考与依据。

References

[1]  An J Y , Kim S, Kim H J. Formaldehyde and TVOC emission behavior of laminate flooring by structure of laminate flooring and heating condition[J]. Journal of Hazardous Materials, 2011, 187(1/2/3): 44-51.
[2]  张 鹏. 阻挡放电-光催化法处理挥发性有机物[D]. 西安:西安建筑科技大学,2004:1-5. ZHANG Peng. The research on removal of volatile organic compounds by dielectric barrier discharge and photocatalysis[D]. Xi’an, China: Xi’an University of Architecture and Technology, 2004: 1-5.
[3]  Kim K W, Kim S, Kim H J, et al . Formaldehyde and TVOC emission behavior according to finishing treatment with surface materials using 20 L chamber and FLEC[J]. Journal of Hazardous Materials, 2010, 177(1/2/3): 90-94.
[4]  Zou L D. Removal of VOCs by photocatalysis process using adsorption enhanced TiO 2 -SiO 2 catalyst[J]. Chemical Engineering and Processing, 2006, 45(11): 959-964.
[5]  李 静,韩世同,白培书,等. 低温等离子体协同催化处理VOC技术中填充材料的研究进展[J]. 化工科技,2006,14(5):33-39. LI Jing, HAN Shitong, BAI Peishu, et al . The study improvement in filling material of VOC treatment by low temperature plasma and photo-catalysis[J]. Science & Technology in Chemical Industry, 2006, 14(5): 33-39.
[6]  吴玉萍,郑光云,蒋洁敏,等. 介质阻挡放电-催化降解苯的研究[J]. 环境化学,2003,22(4):329-333. WU Yuping, ZHENG Guangyun, JIANG Jiemin, et al . The study of benzene degradation by dielectric barrier discharge and catalysis[J]. Environmental Chemical , 2003, 22(4): 329-333.
[7]  王新新. 介质阻挡放电及其应用[J]. 高电压技术,2009,35(1):1-11. WANG Xinxin. Dielectric barrier discharge and its application[J]. High Voltage Engineering, 2009, 35(1): 1-11.
[8]  何正浩,丁留化,邓 东,等. 应用介质阻挡放电处理甲醛气体[J]. 高电压技术,2005,31(12):37-38. HE Zhenghao, DING Liuhua, DENG Dong, et al . Application of dielectric barrier discharge in decomposing formaldehyde gas[J]. High Voltage Engineering, 2005, 31(12): 37-38.
[9]  梁亚红,张 鹏,马广大. 气体放电光催化去除VOCs的实验研究[J]. 环境工程,2004,4(22):46-48. LIANG Yahong, ZHANG Peng, MA Guangda. Experimental study on removing VOCs by photocatalysis-assisted gas discharge[J]. Environmental Engineering, 2004, 4(22): 46-48.
[10]  王晓静. 大气压介质阻挡放电多针-同轴反应器结构优化及降解甲醛试验研究[D]. 重庆:重庆大学,2012:2-11. WANG Xiaojing. Structure optimization of multineedle-to-cylinder reactor in dielectric barrier discharge at atmospheric pressure and experimental study of formaldehyde removal[D]. Chongqing, China: Chongqing University, 2012: 2-11.
[11]  梁文俊,李 坚,金毓峑. 放电等离子体处理甲醛废气的研究[J]. 高电压技术,2005,31(11):31-32. LIANG Wenjun, LI Jian, JIN Yuquan. Destruction of formaldehyde with plasma[J]. High Voltage Engineering, 2005, 31(11): 31-32.
[12]  黄婉霞,孙作凤,吴建春,等. 纳米二氧化钛光催化作用降解甲醛的研究[J]. 稀有金属,2005,29(1):34-38. HUANG Wanxia, SUN Zuofeng, WU Jianchun, et al . Photocatalytic degradation of formaldehyde by nanometer TiO 2 [J]. Chinese Journal of Rare Metals, 2005, 29(1): 34-38.
[13]  李雪辰,赵欢欢,贾鹏英. 常压空气中大间隙介质阻挡放电特性[J]. 高电压技术,2013,39(4):876-882. LI Xuechen, ZHAO Huanhuan, JIA Pengying. Characteristics of dielectric barrier discharge in large air gap at atmospheric pressure[J]. High Voltage Engineering, 2013, 39(4): 876-882.
[14]  刘莉娟,张 宇,欧阳吉庭. 在共面介质阻挡放电中大气压等离子体射流的特性[J]. 高电压技术,2013,39(9):2248-2253. LIU Lijuan, ZHANG Yu, OUYANG Jiting. Characteristic of atmospheric pressure plasma jet in coplanar dielectric barrier discharge[J]. High Voltage Engineering, 2013, 39(9): 2248-2253.
[15]  侯世英,曾 鹏,孙 韬. 介质阻挡放电在水处理中的影响因素分析[J]. 高电压技术,2014,40(1):187-193. HOU Shiying, ZENG Peng, SUN Tao. Analysis on influential factors of dielectric barrier discharge on water treatment[J]. High Voltage Engineering, 2014, 40(1): 187-193.
[16]  何贤俊. 电晕介质阻挡放电特性研究[D]. 合肥:中国科学技术大学,2009:1-12. HE Xianjun. Study on the discharge characteristics of corona-dielectric barrier discharege[D]. Hefei, China: University of Science and Technology of China, 2009: 1-12.
[17]  Hammer T. Non-thermal plasma application to the abatement of noxious emission in automotive exhaust gases[J]. Plasma Sources Science Technology, 2002, 11(3): 196-201.
[18]  Patrick D S, Mark J R, Asce M. Capture of organic vapors using adsorption and electro thermal regeneration[J]. Journal of Environmental Engineering, 2004, 130(3): 258-267.
[19]  李 坚,李 洁,梁文俊,等. 等离子体法去除甲醛的实验研究[J]. 高电压技术,2007,33(2):171-174. LI Jian, LI Jie, LIANG Wenjun, et al . Formaldehyde removal with plasma[J]. High Voltage Engineering, 2007, 33(2): 171-174.
[20]  王洪昌. 介质阻挡放电去除气态混合VOCs的研究[D]. 大连: 大连理工大学,2010:95-97. WANG Hongchang. Study on removal mixed VOCs in air by dielectric barrier discharge[D]. Dalian, China: Dalian University of Technology, 2010: 95-97.
[21]  Braida W J. Air sparging effectiveness: laboratory characterization of air-channel mass transfer zone for VOC volatilization[J]. Journal of Hazardous Materials, 2001, 87(1/2/3): 241-258.
[22]  Fan Z H. Co-formation of hydroperoxides and ultra-fine particles during the reaction of ozone with a complex VOC mixture under simulated indoor conditions[J]. Atmospheric Environment, 2005, 39(28): 5171-5182.
[23]  Chen W R. Treatment of volatile organic chemicals on the EPA contaminant candidate list using ozonation and O 3 /H 2 O 2 advnaced oxidation process[J]. Environmental Science and Technology, 2006, 40(8): 2734-2739.
[24]  Sano T, Negishi N, Sakai E, et al . Contribution of photocatalytic/ catalytic of TiO 2 and γ-Al 2 O 3 in nonthermal plasma on oxidation of acetaldehyde and CO[J]. Journal of Molecular Catalysis A-Chemical, 2006, 245(1/2): 235-241.
[25]  Debasish D. Removal of organic compound by activated carbon fiber[J]. Carbon, 2004, 42(14): 2949-2962.
[26]  郑其锋,聂 勇,顾大勇. 填充式介质阻挡放电等离子体脱除硫酰氟的研究[J]. 高电压技术,2012,38(5):1157-1162. ZHENG Qifeng, NIE Yong, GU Dayong. Removal of SO 2 F 2 by the packed bed dielectric barrier discharge plasma[J]. High Voltage Engineering, 2012, 38(5): 1157-1162.
[27]  Roland H F, Kopinke F D. Combination of non-thermal plasma and heterogeneous catalysis for oxidation of volatile compounds[J]. Applied Catalysis B: Environmental, 2002, 38(3): 161-181.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133