Photooxidative removal of Hg0 from simulated flue gas using UV/H2O2 advanced oxidation process: Influence of operational parameters

Bo Zhang; Zhaoping Zhong; Kuan Ding; Lulu Yu

Korean Journal of Chemical Engineering, Vol.31, No.1, 56-61, January, 2014

DOI10.1007/s11814-013-0179-4 Export Citation

Photooxidative removal of Hg0 from simulated flue gas using UV/H2O2 advanced oxidation process: Influence of operational parameters

Bo Zhang, Zhaoping Zhong^†, Kuan Ding, and Lulu Yu

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

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Element mercury (Hg0) from flue gas is difficult to remove because of its low solubility in water and high volatility. A new technology for photooxidative removal of Hg0 with an ultraviolet (UV)/H2O2 advanced oxidation process is studied in an efficient laboratory-scale bubble column reactor. Influence of several key operational parameters on Hg0 removal efficiency is investigated. The results show that an increase in the UV light power, H2O2 initial concentration or H2O2 solution volume will enhance Hg0 removal. The Hg0 removal is inhibited by an increase of the Hg0 initial concentration. The solution initial pH and pH conditioning agent have a remarkable synergistic effect. The highest Hg0 removal efficiencies are achieved at the UV light power of 36W, H2O2 initial concentration of 0.125 mol/L, Hg0 initial concentration of 25.3 μg/Nm3, solution initial pH of 5, H2O2 solution volume of 600 ml, respectively. In addition, the O2 percentage has little effect on the Hg0 removal efficiency. This study is beneficial for the potential practical application of Hg0 removal from coal-fired flue gas with UV/H2O2 advanced oxidation process.

Keywords:Photooxidative Removal;Hg0;UV/H2O2 Advanced Oxidation Process;Operational Parameters

[References]

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[1] Vaithiyanathan P, Richardson CJ, Kavanaugh RG, Craft CB, Barkay T, Environ. Sci. Technol., 30(8), 2591 (1996)

[2] Pavlish JH, Sondreal EA, Mann MD, Olson ES, Galbreath KC, Laudal DL, Benson SA, Fuel Process. Technol., 82(2-3), 89 (2003)

[3] Fan XP, Li CT, Zeng GM, Zhang X, Tao SS, Lu P, Tan Y, Luo DQ, Energy Fuels, 26(4), 2082 (2012)

[4] Munthe J, Hultberg H, Iverfeldt A, Water Air Soil Pollut., 80, 227 (1995)

[5] Liu W, Vidic RD, Brown TD, Environ. Sci. Technol., 32, 531 (1998)

[6] Wu Y, Wang SX, Streets DG, Environ. Sci. Technol., 40(17), 5312 (2006)

[7] Wen XY, Li CT, Fan XP, Gao HL, Zhang W, Chen L, Zeng GM, Zhao YP, Energy Fuels, 25(7), 2939 (2011)

[8] Yan R, Liang DT, Tsen L, Wong YP, Lee YL, Fuel, 83(17-18), 2401 (2004)

[9] Ding F, Zhao YC, Mi LL, Li HL, Li Y, Zhang JY, Ind. Eng. Chem. Res., 51(7), 3039 (2012)

[10] Qu Z, Yan NQ, Liu P, Jia JP, Yang SJ, J. Hazard. Mater., 183(1-3), 132 (2010)

[11] Prestbo EM, Bloom NS, Water Air Soil Poll., 80, 145 (1995)

[12] Zhang L, Zhuo YQ, Chen L, Xu XC, Chen CH, Fuel Process. Technol., 89(11), 1033 (2008)

[13] Granite EJ, Pennline HW, Hargis RA, Ind. Eng. Chem. Res., 39(4), 1020 (2000)

[14] Aleboyeh A, Kasiri MB, Olya ME, Aleboyeh H, Dyes Pigm., 77(2), 288 (2008)

[15] AlHamedi FH, Rauf MA, Ashraf SS, Desalination, 239(1-3), 159 (2009)

[16] Lester Y, Avisar D, Mamane H, Environ. Technol., 31, 175 (2010)

[17] Fujishima A, Honda K, Nature., 238(5358), 37 (1972)

[18] Chen B, Yang C, Goh NK, J. Environ. Sci. - China., 17(6), 886 (2005)

[19] Shigwedha N, Hua ZZ, Chen J, J. Environ. Sci. - China., 19, 367 (2007)

[20] Hu QH, Zhang CL, Wang ZR, Yan C, Mao KH, Zhang XQ, Xiong YL, Zhu MJ, J. Hazard. Mater., 154(1-3), 795 (2008)

[21] Modirshahla N, Behnajady MA, Dyes Pigm., 70, 54 (2006)

[22] Yuan F, Hu C, Hu XX, Wei DB, Chen Y, Qu JH, J. Hazard. Mater., 185(2-3), 1256 (2011)

[23] Alibegic D, Tsuneda S, Hirata A, Chem. Eng. Sci., 56(21-22), 6195 (2001)

[24] Cooper CD, Clausen CA, Pettey L, Collins MM, de Fernandez MP, J. Environ. Eng. - Asce., 128(1), 68 (2002)

[25] Ma SC, Ma JX, Zhao Y, Su M, Proc. Chin. Soc. Electr. Eng., 29(5), 27 (2009)

[26] Liu YX, Zhang J, Sheng CD, Zhang YC, Zhao L, Energy Fuel., 24(9), 4925 (2010)

[27] Liu YX, Zhang J, Sheng CD, Zhang YC, Zhao L, Sci.China Technol. Sci., 53(7), 1839 (2010)

[28] Muruganandham M, Swaminathan M, Dyes Pigm., 62(3), 269 (2004)

[29] Daneshvar N, Behnajady MA, Asghar YZ, J. Hazard. Mater., 139(2), 275 (2007)

[30] Liu YX, Zhang J, Sheng CD, Zhang YC, Zhao L, Energy Fuel., 24(9), 4931 (2010)

[31] Buxton GV, Greenstock CL, Helman WP, Ross AB, J. Phys. Chem. Ref. Data., 17(2), 513 (1988)

[32] Daneshvar N, Behnajady MA, Mohammadi MKA, Dorraji MSS, Desalination, 230(1-3), 16 (2008)

[33] Shu HY, Chang MC, Dyes Pigm., 65(1), 25 (2005)

[34] Land EJ, Ebert M, Trans. Faraday Soc., 63, 1181 (1967)

[35] Pera-Titus M, Garcia-Molina V, Banos MA, Gimenez J, Esplugas S, Appl. Catal. B: Environ., 47(4), 219 (2004)

[36] Bobu M, Yediler A, Siminiceanu I, Schulte-Hostede S, Appl. Catal. B: Environ., 83(1-2), 15 (2008)