마이크로파 조사 방식에 의한 Oil-Water 에멀젼 분리

홍주희; 김병식; 김덕찬; Joo-Hee Hong; Byoung-Sik Kim; Dok-Chan Kim

Journal of the Korean Industrial and Engineering Chemistry, Vol.16, No.5, 653-659, October, 2005

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마이크로파 조사 방식에 의한 Oil-Water 에멀젼 분리

Demulsification of Oil-Water Emulsions Using Different Microwave Irradiation Mode

홍주희 ^†, 김병식 ¹, 김덕찬

서울시립대학교 화학공학과
¹동국대학교 생명ㆍ화학공학과

Joo-Hee Hong^†, Byoung-Sik Kim¹, and Dok-Chan Kim

Department of Chemical Engineering, The University of Seoul, Seoul 136-743, Korea
¹Department of Chemical & Biochemical Engineering, Dongguk University, Seoul 100-715, Korea

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초록

동일한 마이크로파 조사 방식과 전계 강도에 의하여 마이크로파가 에멀젼에 조사될 경우 조사 시간이 길수록 많은 에너지가 에멀젼에 흡수된다. 그 결과로 에멀젼의 온도가 상승하고 점도는 낮아져 분리가 일어난다. 본 연구에서는 에멀젼 분리 효율의 향상을 위하여 마이크로파 조사 방식(연속식(continuous mode), 펄스식(pulsative mode), 주기식(periodical mode))에 의한 분리 효율의 비교 검토와 Sauter 평균 지름(Sauter mean diameter: D32)을 이용한 에멀젼의 안정성에 관한 연구를 수행하였다. 각각의 조사 방식에 의하여 600 sec 동안 마이크로파가 조사된 30% W/O형 에멀젼(sample #1)을 24 h 침강시켰을 경우 연속식, 펄스식, 그리고 주기식에서 각각 60.0%, 62.3%, 그리고 96.2%의 오일 회수가 이루어졌고, 물 분리율은 26.5%, 35.0%, 그리고 93.9%를 나타내었다. Sauter 평균 지름(D32)은 연속식 47.183 μm, 펄스식 111.547 μm 그리고 주기식에서 220.476 μm로 주기식에서 가장 큰 값을 얻었다.

When emulsion is irradiated by a microwave, the energy absorbed by the emulsion is proportional to irradiation time. In case of a long exposure, the temperature of emulsion rises, its viscosity decrease, and subsequently increase the rate of demulsification. In this work, in order to improve demulsification rate, the studies on demusification and the Sauter mean diameter (D32) for each microwaved emulsion with different irradiation mode(continuous, pulsative, and periodical irradiation) have been carried out. When the 30% W/Oemulsion (sample #1) was irradiated for 600 sec and settled for 24 h, oil recovery rates from continuous, pulsative, and periodical microwave irradiation were 60.0%, 62.3%, and 96.2%, and the amounts of separated water were 26.5%, 35.05, and 93.9%, respectively. Also, the Sauter mean diameters (D32) were 47.183 μm, 111.547 μm, and 220.476 μm, respectively.

Keywords:demulsification;separation;emulsion;microwave;irradiation mode

[References]

IUPAC, Pure Appl. Chem., 31, 579 (1972)
임경희, 에멀젼 기술과 계면 활성제, 한국과학기술원, 대전 (1993)
박광하, J. Environ. Res., 2, 1A (2002)
Little RC, Patterson RL, Environ. Sci. Technol., 12, 584 (1978)
Arnold K, Stewart M, Surface Production Operation, 1, Gulf Pub. Co., Huston (1986)
Fang CS, Lai PMC, Chang BKL, Klaila WJ, Environ. Prog., 8, 235 (1989)
Leonre SE, Aronld EG, Andrew DE, Standard Method for the Examination of Water and Wastewater, 20th ed., Am. Pub. Health Assoc., Washington (1998)
Lai MP, Ph.D. Dissertation, Louisiana Tech Univ. LA (1990)
Peterson ER, Microwave: Theory and Application in Materials Process IV, ACS (American Ceramic Society), OH (2001)
Evans DF, Wennerstrom H, The Colloidal Domain, 2nd ed., Wiley-VCH, NY (1999)
Bezemer C, Schwarz N, Kolloid-Zeitschrift, 146 Bd., 145 (1956)
Schwarz N, Bezemer C, Kolloid-Zeitschrift, 146 Bd., 139 (1956)
Meijs FH, Mitchell RW, J. Pet. Technol., 563 (1974)

[Related Articles]

[1] IUPAC, Pure Appl. Chem., 31, 579 (1972)

[2] 임경희, 에멀젼 기술과 계면 활성제, 한국과학기술원, 대전 (1993)

[3] 박광하, J. Environ. Res., 2, 1A (2002)

[4] Little RC, Patterson RL, Environ. Sci. Technol., 12, 584 (1978)

[5] Arnold K, Stewart M, Surface Production Operation, 1, Gulf Pub. Co., Huston (1986)

[6] Fang CS, Lai PMC, Chang BKL, Klaila WJ, Environ. Prog., 8, 235 (1989)

[7] Leonre SE, Aronld EG, Andrew DE, Standard Method for the Examination of Water and Wastewater, 20th ed., Am. Pub. Health Assoc., Washington (1998)

[8] Lai MP, Ph.D. Dissertation, Louisiana Tech Univ. LA (1990)

[9] Peterson ER, Microwave: Theory and Application in Materials Process IV, ACS (American Ceramic Society), OH (2001)

[10] Evans DF, Wennerstrom H, The Colloidal Domain, 2nd ed., Wiley-VCH, NY (1999)

[11] Bezemer C, Schwarz N, Kolloid-Zeitschrift, 146 Bd., 145 (1956)

[12] Schwarz N, Bezemer C, Kolloid-Zeitschrift, 146 Bd., 139 (1956)

[13] Meijs FH, Mitchell RW, J. Pet. Technol., 563 (1974)