。10。 北京科技大学学报 2007年增刊2 成.降解率可提高到49.4%. [7 Shirgaonkar IZ,Pandit A B.Sonophotochemical destruction of (4当表面活性剂的质量分数提高到0.1%时， aqueous solution of 2.4.6-trich brophenol.Ultrason Sonochem, 1998(5):53 降解率可提高到49.2%.这是由于所添加的表面活 [8 Naffrechoux E,Chanoux S,Petrier C,et al.Sonochemical and 性剂有助于将六氯苯脱附到水溶液中，从而增加了 photochemical oxidation of organic mater.Ultrason Sonochem, 有效反应表面积. 2000(7):255 9Suzuki Y,Maezawa A.Uchida S.Utilization of ultrasonic energy (5)当用双频超声波辐射时，六氯苯的降解率 in a photocatalytic oxidation process for treing w aste watercon 高于任一单频超声波辐射.经过1h超声波辐射， taining surfactants.Jpn J Appl Physics,2000.39:2958 20/176kHz双频、20kHz单频和176单频条件下，六 [10 Selli E.Synergistic effects sonolysis combined with photocataly- sis in the degradation of an ao dye.Phys Chem Chem Physics. 氯苯降解率分别为57.5%3.67%和41.0%. 2002(4):6123 1l]Kubo M,Matsuoka K,Takahashi A,ct al.Kinetics of ultra 参考文献 sonic degradation of phenol in the presence of Tiaparticles Ul- [1]Meegoda J N.Veeraw at K.Ultrasound to decont aminate organics trason Sonoc hem,2005(12):263 in dredged sediments.Soil and Sediment Contamination.2002 12]Liu Z.Laha S.Luthy R G.Suractant solubilzation of poly- (11):91 cydic aromatic hydrocarbon compounds in soiwater suspen- [2]Cline S R.Reed B E.Lead removal from soils via bench scale soil sions.Water Sci Technol,1991,23:475 washing techniques.J Environ Eng 1996,121:700 13 Wang S.Huang B.Wang Y,et al.Comparison of enhancement [3]Galloway J E.Frank L S.Pibt-scale demonstration of sediment of pentachlomphenol sonolysis at 20kHz by duafrequency sori- washing //Dredging 94 Proceedings of the Second Intemational cation.Utrason Sonochem,2006.13:506 Conference.Lake Buena Vista.FL:American Society of Civil [14 Gogate P R,Mujumdar S,Pandit A B.Sonochemical reactors Engineers,1994:981 for waste water treatment Comparison using fomic acid degra [4]Stem E0,Massa AA.Wisemiller B.Recent assessment and de dation as a model reaction.Adv Environ Res 2003(7):283 contaminat ion studies of contaminated sediments in the New [15]Sivakumar M.Tatake P A.Pandit A B.Kinetics of p-nitrophe- York/New Jersey hatbor//Dredging'94 Proceedings of the Sec- nol degradation:effect of reaction condit ions and cavitational pa ond International Conference 1.Lake Buena Vista,FL Ameri- rameters for a multiple frequency system.Chem Eng J.2002. can Society of Civil Engineers 1994:458 85:327 [5]Omori E.On the chemical composition of bottom sediments in 【1(石焕文，尚志远，王三德.复频聚焦超声换能器水中焦区声场 Lake Biw a.central Japan.Bull Geol Surv Jpn.1968 (19):103 特性的研究.应用声学，2001(4)：27 [6]Leong Y K.Yield stress and zeta potential of nanoparticulte siica 17]Nagata Y,Hirai K,Bandow H,et al.Decomposition of hydrox- dispersions under the influence of adsorbed hydrol sis products of ybenzoic and humic acids in water by ultrasonic irradiation.Env metal ions-Cu(II),Al(Ill)and Th(IV).J Colloid Inter face Sci, iron Sci TechnoL 1996.30:1133 2005,292:557 Sonochemical degradation of POPs in model sediment LIANGJun,WU Shengli,Nachito HAY ASHP),Hiromi CHOSHP,Eiki KASAP) 1)Metallurgical and Ecological Engineering School,Uriversity of Science and Technology Beijng.Beijing 100083.China 2)Graduate School of Environmental studies,T ohoku University.Sendai 980-8577.Japan ABSTRACT The potential of hexachlorobenzen(HCB),one of POPs,decomposition by ultrasonic irradiation and its combination with other AOPs(advanced chemical oxidation processes)and surfactant addition was evalu- ated.Comparing the ultrasonic irradiation alone with the combination with the UV (ultraviolet)light irradia- tion,the degradation ratios were almost the same,40.0%and 39.7%,respectively.On the other hand,the degradation ratio increased to 49.4%when combining with photocat alysis possibly att ributed to the promotion of the cavitation due to the addition of TiO2 particles.When the surfactant concentration w as increased to 0.1%, the degradation ratio increased to 49.2%.It seemed that the added surfactant could contribute to deso rbing HCB from the sediment surface and increasing the effective reaction surface area.The degradation ratio of HCB under the dual-frequency ultrasonic irradiat ion was higher than that under the mono-frequency ultrasonic irradia tion.After I h ultrasonic irradiation,the degradation ratio was 57.5%for the dualfrequency ultrasound of 20/ 176 kHz combination,whereas 3.67%and 41.0%for 20 and 176 kHz ultrasound,respectively. KEY WORDS POPs sonochemical decomposition;advanced chemical oxidation processes (AOPs);hex- achlorobenzene成, 降解率可提高到 49.4 %. ( 4) 当表面活性剂的质量分数提高到0.1 %时, 降解率可提高到 49.2 %, 这是由于所添加的表面活 性剂有助于将六氯苯脱附到水溶液中, 从而增加了 有效反应表面积 . (5) 当用双频超声波辐射时, 六氯苯的降解率 高于任一单频超声波辐射 .经过 1 h 超声波辐射, 20/176kHz 双频、20kHz 单频和 176 单频条件下, 六 氯苯降解率分别为 57.5 %, 3.67 %和 41.0 %. 参 考 文 献 [ 1] Meegoda J N, Veeraw at K .Ultrasound to decont aminat e organics in dredged sediments.Soil and Sediment Contamination, 2002 ( 11) :91 [ 2] Cline S R, Reed B E .Lead removal from soils via bench-scale soil w ashing techniques.J Environ Eng, 1996, 121:700 [ 3] Galloway J E, Frank L S.Pilot-scale demonstration of sedimen t w ashing ∥Dredging' 94 Proceedings of the Second International Conference.Lake Buena Vista, FL :American S ociety of Civil Engineers, 1994:981 [ 4] S tern E O, Massa A A, Wisemiller B .Recent assessment and de￾contamination studies of contaminated sediments in the New York/ New Jersey harbor ∥Dredging' 94 Proceedings of the Sec￾ond Internati onal Conference 1.Lake Buena Vista, FL:Ameri￾can Society of Civil Engineers, 1994:458 [ 5] Omori E .On the chemical composition of bottom sediments in Lake Biw a, central Japan.Bull Geol Surv Jpn, 1968 ( 19) :103 [ 6] Leong Y K .Yield stress and zet a potential of nanoparticulate sili ca dispersions under the influence of adsorbed hydrolysis products of metal ions-Cu( Ⅱ) , Al( Ⅲ) and Th( Ⅳ) .J Colloid Interface Sci, 2005, 292:557 [ 7] Shirgaonkar I Z, Pandit A B.Sonophotochemical destruction of aqueous solution of 2, 4, 6-trich lorophenol.Ultrason Sonochem, 1998 ( 5) :53 [ 8] Naffrechoux E, Chanoux S, Petrier C, et al.Sonochemical and photochemical oxidation of organic mater.Ultrason Sonochem, 2000 ( 7) :255 [ 9] Suzuki Y, Maezaw a A, Uchida S.Utilization of ultrasonic energy in a photocatalytic oxidation process f or treating w aste w at er con￾taining surfactants.Jpn J Appl Physics, 2000, 39:2958 [ 10] Selli E .Synergistic eff ects sonolysis combined w ith phot ocataly￾sis in the degradation of an azo dye.Phys Chem Chem Physics, 2002( 4) :6123 [ 11] Kubo M, Matsuoka K, Takahashi A, et al.Kinetics of ultra￾sonic degradation of phenol in the presence of TiO2 particles.Ul￾trason Sonochem, 2005( 12) :263 [ 12] Liu Z, Laha S, Luthy R G .Su rf act ant solubilization of poly￾cyclic aromatic hydrocarbon compounds in soil-w at er suspen￾sions.Water Sci Technol, 1991, 23:475 [ 13] Wang S, Huang B, Wang Y, et al.Comparison of enhancement of pentachlorophenol sonolysis at 20 kHz by dual-frequency soni￾cation.Ultrason Sonochem, 2006, 13:506 [ 14] Gogat e P R, Mujum dar S, Pandit A B .Sonochemical reactors for w aste w at er treatment:Comparison using formi c acid degra￾dation as a model reaction.Adv Envi ron Res, 2003( 7) :283 [ 15] Sivakumar M, Tatake P A, Pandit A B .Kinetics of p-nitrophe￾nol degradation:effect of reaction conditions and cavitational pa￾ramet ers f or a multiple frequency system .Chem Eng J, 2002, 85:327 [ 16] 石焕文, 尚志远, 王三德.复频聚焦超声换能器水中焦区声场 特性的研究.应用声学, 2001 ( 4) :27 [ 17] Nagat a Y, Hirai K, Bandow H, et al.Decomposition of hydrox￾ybenzoic and humic acids in w ater by ultrasonic irradiation.Env￾iron Sci Technol, 1996, 30:1133 Sonochemical deg radation of POPs in model sediment LIANGJ un 1) , WU Shengli 1) , Naohito HAY ASHI 2) , Hiromi CHOSHI 2) , Eiki KAS AI 2) 1) Metallurgical and Ecological Engineering S chool, Uni versit y of Science and Technology Beijing, Beijing 100083, China 2) Graduate S chool of Environmental studies, T ohoku Universit y, Sendai 980-8577, Japan ABSTRACT The potential of hexachlorobenzen ( HCB) , one of POPs, decomposition by ultrasonic irradiation and its combination with other AOPs ( advanced chemical oxidation processes) and surfactant addition was evalu￾ated.Comparing the ultrasonic irradiation alone w ith the combination with the UV ( ultraviolet) light irradia￾tion, the deg radation ratios w ere almost the same, 40.0 %and 39.7 %, respectively .On the other hand, the deg radation ratio increased to 49.4 %w hen combining w ith photocatalysis possibly attributed to the promotion of the cavitation due to the addition of TiO2 particles .When the surfactant co ncentration w as increased to 0.1 %, the degradation ratio increased to 49.2 %.It seemed that the added surfactant could contribute to deso rbing HCB from the sediment surface and increasing the effective reaction surface area.The degradation ratio of HCB under the dual-frequency ultrasonic irradiation was higher than that under the mono-frequency ultrasonic irradia￾tion .After 1 h ultrasonic irradiation, the deg radation ratio w as 57.5 %fo r the dual-frequency ultrasound of 20/ 176 kHz combination, w hereas 3.67 %and 41.0 %for 20 and 176 kHz ultrasound, respectively . KEY WORDS POPs;sonochemical decomposition ;advanced chemical oxidation processes ( AOPs) ;hex￾achlorobenzene · 10 · 北 京 科 技 大 学 学 报 2007 年 增刊 2