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水介质中微气泡臭氧化处理高浓度甲苯气体

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刘春, 庞晓克, 高立涛, 张静, 陈晓轩, 张磊, 张瑞娜. 水介质中微气泡臭氧化处理高浓度甲苯气体[J]. 环境工程学报, 2019, 13(1): 116-124. doi: 10.12030/j.cjee.201808174
引用本文: 刘春, 庞晓克, 高立涛, 张静, 陈晓轩, 张磊, 张瑞娜. 水介质中微气泡臭氧化处理高浓度甲苯气体[J]. 环境工程学报, 2019, 13(1): 116-124. doi: 10.12030/j.cjee.201808174
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LIU Chun, PANG Xiaoke, GAO Litao, ZHANG Jing, CHEN Xiaoxuan, ZHANG Lei, ZHANG Ruina. High-concentration toluene gas treatment by microbubble ozonation in water medium[J]. Chinese Journal of Environmental Engineering, 2019, 13(1): 116-124. doi: 10.12030/j.cjee.201808174
Citation: LIU Chun, PANG Xiaoke, GAO Litao, ZHANG Jing, CHEN Xiaoxuan, ZHANG Lei, ZHANG Ruina. High-concentration toluene gas treatment by microbubble ozonation in water medium[J]. Chinese Journal of Environmental Engineering, 2019, 13(1): 116-124. doi: 10.12030/j.cjee.201808174
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水介质中微气泡臭氧化处理高浓度甲苯气体

  • 1.

    河北科技大学环境科学与工程学院，石家庄 050018

  • 2.

    河北省污染防治生物技术重点实验室，石家庄 050018

  • 基金项目:

    河北科技大学科学治霾及大气污染防治重点攻关预研专项课题

High-concentration toluene gas treatment by microbubble ozonation in water medium

  • 1.

    School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

  • 2.

    Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang 050018, China

  • Fund Project:

  • 摘要: 高浓度挥发性有机物(VOC)气体高效处理技术是大气污染控制领域关注的重点。采用微气泡臭氧化在水介质中通过吸收-氧化过程对高浓度甲苯气体进行处理，考察微气泡臭氧化强化甲苯吸收-氧化去除性能、机理以及水介质pH对该工艺处理效果的影响。结果表明，微气泡能够强化甲苯气体在水介质中的吸收过程，氮气/甲苯微气泡在水介质中的甲苯去除率和吸收量均显著高于氮气/甲苯传统气泡，同时氮气/甲苯微气泡通过产生·OH氧化反应，使得平均甲苯氧化矿化率达到40.97%。微气泡臭氧化在水介质中对甲苯气体具有更高效的去除性能，臭氧/甲苯微气泡处理中甲苯平均去除率为97.08%，甲苯可被完全矿化而几乎无中间产物积累，其平均氧化矿化率为88.56%、平均臭氧利用率为82.54%、臭氧投加量与甲苯矿化量比值为1.26，处理性能显著优于臭氧/甲苯传统气泡处理。水介质pH对臭氧/甲苯微气泡处理甲苯气体具有一定影响，不同pH条件下甲苯气体去除率基本相当，但中性条件下甲苯氧化矿化率最高；碱性和酸性条件下甲苯氧化矿化率有所下降。微气泡臭氧化为高浓度VOC气体高效处理提供了新的解决途径。
    Abstract: The effective technology for high concentration volatile organic compound (VOC) gas treatment is a focus of air pollution control. The microbubble ozonation was used to treat high concentration toluene gas in water medium through absorption-oxidation process. The performance and mechanism of toluene removal through an enhanced absorption-oxidation process with microbubble ozonation, as well as the effect of water medium pH, were studied. The results showed that microbubbles could enhance absorption process of toluene gas in water medium. The removal efficiency and absorption amount of toluene in water medium using nitrogen/toluene microbubbles were much higher than those using nitrogen/toluene conventional bubbles. In addition, ·OH oxidation occurred when using nitrogen/toluene microbubbles, which resulted in an average oxidation mineralization efficiency of 40.97% for toluene. The higher efficient removal of toluene gas was achieved with microbubble ozonation in water medium. In this case, the average toluene removal efficiency using ozone/toluene microbubbles was 97.08%.The toluene could be mineralized completely without intermediate product accumulation. The average toluene oxidation mineralization efficiency was 88.56% and the average ozone utilization efficiency was 82.54%. The ratio of ozone dosage to toluene mineralization amount was 1.26. The removal performance of toluene gas using ozone/toluene microbubbles was much better than that using ozone/toluene conventional bubbles. The pH of water medium had some effects on the toluene gas treatment with microbubble ozonation. The toluene removal efficiency was almost same at different pHs of water medium. However, the toluene oxidation mineralization efficiency reached maximum under neutral pH, and presented a little decrease under alkaline and acid conditions. Microbubble ozonation provides a new solution for an efficient treatment of high concentration VOC gas.
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  • [1] BERENJIAN A, CHAN N, MALMIRI H J. Volatile organic compounds removal methods: A review [J]. American Journal of Biochemistry and Biotechnology, 2012, 4(8): 220-229.
    [2] 席劲瑛, 武俊良, 胡洪营, 等. 工业VOCs气体处理技术应用状况调查分析[J]. 中国环境科学, 2012, 32(11): 1955-1960.
    [3] 栾志强, 郝郑平, 王喜芹. 工业固定源VOCs 治理技术分析评估[J]. 环境科学, 2011, 32(12): 3476-3486.
    [4] 黄海凤, 宁星杰, 蒋孝佳, 等. V-M/TiO2(M=Cu、Cr、Ce、Mn、Mo)催化燃烧含氯有机废气[J]. 中国环科学, 2014, 34(9): 2179-2185.
    [5] 黄学敏, 乔南利, 曹利, 等. CuxCe(1-x)O2/γ-Al2O3催化剂催化燃烧甲苯性能的研究[J]. 环境科学学报, 2012, 32(5): 1177-1182.
    [6] GUPTA K N, RAO N J, AGARWAL G K. Gaseous phase adsorption of volatile organic compounds on granular activated carbon [J]. Chemical Engineering Communications, 2015, 202(3): 384-401.
    [7] BAUR G B, BESWICK O, SPRING J, et al. Activated carbon fibers for efficient VOC removal from diluted streams: The role of surface functionalities [J]. Adsorption, 2015, 21(4): 255-264.
    [8] SPIGNO G, PAGELLA C, FUMI M D, et al. VOCs removal from waste gases: Gas-phase bioreactor for the abatement of hexane by Aspergillus niger [J]. Chemical Engineering Science, 2003, 58(3): 739-746.
    [9] GUIEYSSE B, HORT C, PLATEL V, et al. Biological treatment of indoor air for VOC removal: Potential and challenges [J]. Biotechnology Advances, 2008, 26(5): 398-410.
    [10] KWONG C W, CHAO C Y H, HUI K S, et al. Removal of VOCs from indoor environment by ozonation over different porous materials [J]. Atmospheric Environment, 2008, 42(10): 2300-2311.
    [11] BRODU N, ZAITAN H, MANERO M H, et al. Removal of volatile organic compounds by heterogeneous ozonation on microporous synthetic alumina silicate [J]. Water Science and Technology, 2012, 66(9): 2020-2026.
    [12] IKHLAQ A, KASPRZYK-HORDERN B. Catalytic ozonation of chlorinated VOCs on ZSM-5 zeolites and alumina: Formation of chlorides [J]. Applied Catalysis B: Environmental, 2017, 200(1): 274-282.
    [13] ZHONG L, HAGHIGHAT F. Ozonation air purification technology in HVAC applications [J]. Ashrae Transactions, 2014, 120(1): 1-8.
    [14] MOUSSAVI G R, KHAVANIN A, MOKARAMI H. Removal of xylene from waste air stream using catalytic ozonation process [J]. Iranian Journal of Health and Environment, 2010, 3(3): 239-250.
    [15] STOYANOVA M, KONOVA P, NIKOLOV P, et al. Alumina-supported nickel oxide for ozone decomposition and catalytic ozonation of CO and VOCs [J]. Chemical Engineering Journal, 2006, 122(1): 41-46.
    [16] CHU L B, XING X H, YU A F, et al. Enhanced ozonation of simulated dyestuff wastewater by microbubbles [J]. Chemosphere, 2007, 68(10): 1854-1860.
    [17] 张静, 杜亚威, 刘晓静, 等. 臭氧微气泡处理酸性大红3R废水特性研究[J]. 环境科学, 2015, 36(2): 584-589.
    [18] 曹原原. 炼油厂废气的排放与防治[J]. 中外能源, 2018, 23(4): 91-97.
    [19] BADER H, HOIGNé J. Determination of ozone in water by the indigo method [J]. Water Research, 1981, 15(4): 449-456.
    [20] 宋仁元, 张亚杰, 王唯一, 等. 水和废水标准检验法[M] . 北京: 中国建筑工业出版社, 1985: 368-370.
    [21] 任源, 韦朝海, 吴超飞, 等. 生物流化床A/O2工艺处理焦化废水过程中有机组分的GC/MS分析[J]. 环境科学学报, 2006, 26(11): 1785-1791.
    [22] TAKAHASHI M, CHIBA K, LI P. Free-radical generation from collapsing microbubbles in the absence of a dynamic stimulus [J]. Journal of Physical Chemistry B, 2007, 111(6): 1343-1347.
    [23] LI P, TAKAHASHI M, CHIBA K. Degradation of phenol by the collapse of microbubbles [J]. Chemosphere, 2009, 75(10): 1371-1375.
    [24] KHUNTIA S, MAJUMDER S K, GHOSH P. Quantitative prediction of generation of hydroxyl radicals from ozone microbubbles [J]. Chemical Engineering Research and Design, 2015, 98(6): 231-239.
    [25] SHAHIDI D, ROY R, AZZOUZ A. Advances in catalytic oxidation of organic pollutants-prospects for thorough mineralization by natural clay catalysts [J]. Applied Catalysis B: Environmental, 2015, 174-175(21): 277-292.
    [26] STAEHELIN J, HOIGNé J. Decomposition of ozone in water: Rate of initiation by hydroxide ions and hydrogen peroxide [J]. Environmental Science and Technology, 1982, 16(10): 676-681.
    [27] CHOI K, BAE S, LEE W. Degradation of off-gas toluene in continuous pyrite Fenton system [J]. Journal of Hazardous Materials, 2014, 280 (4): 31-37.
    [28] TAKAHASHI M. ζ potential of microbubbles in aqueous solutions: Electrical properties of the gas-water interface [J]. Journal of Physical Chemistry B, 2005, 109(46): 21858-21864.
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  • 刊出日期:  2019-01-08

水介质中微气泡臭氧化处理高浓度甲苯气体

  • 1. 河北科技大学环境科学与工程学院，石家庄 050018
  • 2. 河北省污染防治生物技术重点实验室，石家庄 050018
基金项目:

河北科技大学科学治霾及大气污染防治重点攻关预研专项课题

摘要: 高浓度挥发性有机物(VOC)气体高效处理技术是大气污染控制领域关注的重点。采用微气泡臭氧化在水介质中通过吸收-氧化过程对高浓度甲苯气体进行处理，考察微气泡臭氧化强化甲苯吸收-氧化去除性能、机理以及水介质pH对该工艺处理效果的影响。结果表明，微气泡能够强化甲苯气体在水介质中的吸收过程，氮气/甲苯微气泡在水介质中的甲苯去除率和吸收量均显著高于氮气/甲苯传统气泡，同时氮气/甲苯微气泡通过产生·OH氧化反应，使得平均甲苯氧化矿化率达到40.97%。微气泡臭氧化在水介质中对甲苯气体具有更高效的去除性能，臭氧/甲苯微气泡处理中甲苯平均去除率为97.08%，甲苯可被完全矿化而几乎无中间产物积累，其平均氧化矿化率为88.56%、平均臭氧利用率为82.54%、臭氧投加量与甲苯矿化量比值为1.26，处理性能显著优于臭氧/甲苯传统气泡处理。水介质pH对臭氧/甲苯微气泡处理甲苯气体具有一定影响，不同pH条件下甲苯气体去除率基本相当，但中性条件下甲苯氧化矿化率最高；碱性和酸性条件下甲苯氧化矿化率有所下降。微气泡臭氧化为高浓度VOC气体高效处理提供了新的解决途径。

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