전자빔 가속기를 이용한 페놀의 산화분해반응

양해영; SergeyPetrov; 한도흥; Hae Young Yang; Sergey Petrov; Do Hung Han

HWAHAK KONGHAK, Vol.38, No.1, 80-85, February, 2000

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전자빔 가속기를 이용한 페놀의 산화분해반응

The Oxidative Degradation of Phenol by Electron Beam Accelerator

양해영, SergeyPetrov¹, 한도흥^†

영남대학교 응용화학공학부, 경산 712-749
¹러시아 브드커 핵물리연구소

Hae Young Yang, Sergey Petrov¹, and Do Hung Han^†

School of Chemical Engineering and Technology, Yeungnam University, 214-1 Taedong, Kyongsan 712-749 Kyongbuk, Korea
¹Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Science, Russian Federation

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초록

고 에너지 전자빔을 이용하여 생물학적으로 난분해성이며 유독성 유기물인 페놀의 산화분해를 연구하였다. 전자빔에 의한 페놀의 산화분해반응에서 오존은 페놀의 산화분해를 상승시키며, 공기주입에 의한 반응물의 혼합이 잘 일어나는 조건에서는 전자빔의 유효투과깊이 보다 8배 더 큰 깊이에서도 제거율의 변동은 거의 없었다. 따라서 페놀분해를 위한 실제흡수에너지의 상당한 감소가 가능하였다. 페놀의 제거율은 dose rate가 감소함에 따라 향상된다. 전자빔에 의한 페놀의 산화분해과정에서 생성된 고리화합물들은 20 kGy의 낮은 흡수에너지에서도 약 90%정도의 분해가 일어나지만 총 유기탄소는 감소되기가 어렵다.

The oxidative degradation of toxic and non-biodegradable phenol by a high energy electron beam has been investigated. Ozone can effectively accelerate oxidation and degradation of phenol. The removal rate of phenol is reduced little even at depths much higher than eight times of effective penetration depth in the well-mixing conditions by aeration. Therefore, considerable decrease in a real absorbed energy for degradation of phenol was possible. Removal rate of phenol could also be improved by decreasing dose rate. Ring chemical compounds produced by phenol degradation can be easily removed upto nearly 90% by low adsorbed energy of 20 kGy but total organic compounds were difficult to reduce.

Keywords:Oxidation;Degradation;Phenol;Electron Beam;Ozone;Dose Rate;Effective Penetration Depth

[References]

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[1] Delvin HR, Harris I, J. Ind. Eng. Chem. Fundam., 23, 387 (1984)

[2] Prouder BB, Le H, Chem. Eng., 54, 319 (1976)

[3] Kim EH, Kim YH, Chung DY, Yoo JH, Choi CS, HWAHAK KONGHAK, 35(3), 440 (1997)

[4] Hoigne J, Netzer RG, "Handbook of Ozone Technology and Application," Ann Arbor Science Publishers, 1, 341 (1982)

[5] Glaze WH, Kang JW, Chapin DH, Ozone Sci. Eng., 9, 335 (1987)

[6] Spinks JWT, Woods RJ, "An Introduction to Radiation Chemistry," John Wiley & Sons, New York (1976)

[7] Getoff N, "Proceed. Symp. on Removal of Dangerous Waste Material," Federal Ministry for Science and Research, Vienna, Austria, 90 (1983)

[8] Getoff G, Lutz W, Radiat. Phys. Chem., 25(1-3), 21 (1985)

[9] Hoigne J, Bader H, Water Res., 17, 185 (1983)

[10] Bendar J, "Theoretical Foundations of Radiation Chemistry," Kluwer Academic Publishers, 32 (1990)

[11] Han DH, Yang HH, Kwon KM, J. Korean Soc. Environ. Eng., 16(7), 885 (1994)

[12] Joglekar HS, Samant SD, Joshi JB, Water Res., 25, 135 (1991)

[13] Hoigne J, Bader H, Water Res., 15, 449 (1981)

[14] Schiller S, Heisig U, Panzer S, "Electron Beam Technology," John Wiley & Sons, New York, 470 (1982)

[15] Hashimoto S, Miyata T, Washino M, Kawakami W, Environ. Sci. Technol., 13(1), 71 (1979)