Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지
DOI QR코드

DOI QR Code

Kinetic study about the effect of electric field and contact time of high voltage impulse on reduction of Ca2+ concentration

고전압 임펄스 공정의 전계와 접촉시간이 Ca2+ 농도 저감에 미치는 영향의 속도론 연구

  • Kim, Dam-Ha (Department of Environmental Engineering, Hoseo University) ;
  • Chang, In-Soung (Department of Environmental Engineering, Hoseo University)
  • 김담하 (호서대학교 환경공학과) ;
  • 장인성 (호서대학교 환경공학과)
  • Received : 2020.12.31
  • Accepted : 2021.02.01
  • Published : 2021.04.15
Download PDF
⟨ Previous Next ⟩

Abstract

High voltage impulse (HVI) has been gained attention as an alternative technique that could control the CaCO3 scale problems encountered in water main, pipe, cooling tower and heat exchanger vessels. The aim of this study was to investigate the effect of electric field (E) and contact time (t) of HVI on reduction of Ca2+ concentration at two different temperatures of 25℃ and 60℃. A kinetic model on the effect of E and t was investigated too. As the E and t increased, the Ca2+ concentration decreased more than that of the control (= no HVI). The Ca2+ concentration decreased up to 81% at 15 kV/cm at 60℃, which was nearly 2 times greater than the control. With these experimental data-set of reduction of Ca2+ concentration under different E and t, the kinetic model was developed. The relationship between E and t required to reduce the concentration of Ca2+ by 30% was modeled at each temperature. The empirical model equations were; E0.83· t = 60.3 at 25℃ and E0.08· t = 1.1 at 60℃. These equations state the products of En and t is always constant, which means that the required contact time can be reduced in accordance with the increment of E and vice versa.

Keywords

Acknowledgement

본 연구는 한국연구재단의 연구비 지원으로 수행되었습니다. 이에 감사드립니다. (과제번호: 2019R1F1A1042061).

References

  1. Barbosa-Canovas, G.V. and Zhang, Q.H. (2001). Pulsed electric fields in food processing, fundamental aspects and applications, Technomic publishing company, Inc., USA, 45-56.
  2. Cho, S.Y., Kim, T.H., Chang, I.S., Hong, W.K. and Lee, J.H. (2017). Effect of initial volume of hard water and contact time on the reduction of calcium ion concentration using high voltage impulse technique, Trans. Korean Inst. Elect. Eng., 66(7), 1066-1071. https://doi.org/10.5370/KIEE.2017.66.7.1066
  3. Fathi, A., Mohamed, T., Claude, G., Maurin, G. and Mohamed, B.A. (2006). Effect of a magnetic water treatment on homogeneous and heterogeneous precipitation of calcium carbonate, Water Res., 40, 1941-1950. https://doi.org/10.1016/j.watres.2006.03.013
  4. Hasson, D., Semiat, R., Bramson, D., Busch, M. and Limoni-Relis, B. (1998). Suppression of CaCO3 scale deposition by anti-scalants, Desalination, 118(1-3), 285-296. https://doi.org/10.1016/S0011-9164(98)00149-0
  5. Kim, J.H. and Chang, I.S. (2019). Effect of the applied voltage of pulsed electric fields and temperature on the reduction of calcium ion concentration, J. Korean Soc. Water Wastewater, 33(2), 95-101. https://doi.org/10.11001/jksww.2019.33.2.095
  6. Korachi, M., Turan, Z., Senturk, K., Sahin, F. and Aslan, N. (2009). An investigation into the biocidal effect of high voltage AC/DC atmospheric corona discharges on bacteria, yeasts, fungi and algae, J. Electrostat., 67(4), 678-685. https://doi.org/10.1016/j.elstat.2009.03.002
  7. Lee, H.D., Kim, J.O., Kim, H.K. and Chung J.W. (2012). Degradation of methyl orange by pulsed corona discharges in aqueous solution, J. Korean Soc. Water Wastewater, 26(1), 69-76. https://doi.org/10.11001/jksww.2012.26.1.069
  8. Lelieveld, H.L.M., Notermans, S. and de Haan, S.W.H. (2007). Food preservation by pulsed electric fields, Woodhead Publishing, England, 1-8.
  9. Murrer, J. and Rosberg, R. (1998), Desalting of seawater using UF and RO - results of a pilot study, Desalination, 118(1-3), 1-4. https://doi.org/10.1016/S0011-9164(98)00064-2
  10. Pothakamury, Usha R., Monsalve-Gonzalez, A., BarbosaCanovas, Gustavo V. and Swanson, Barry H. (1995). Inactivation of Escherichia coli and Staphylococcus aureus in model foods by pulsed electric field technology, Food Res. Int., 28(2), 167-171. https://doi.org/10.1016/0963-9969(95)90801-G
  11. Radler, S. and Ousko-Oberhoffer, U. (2005). "Optimized heat exchanger management-achieving financial and environmental targets", Sixth international conference on heat exchanger fouling and cleaning, Kloster Irsee, Germany, 327-331.
  12. Son, S.M. and Shin, J.K. (2008). The effect of environmental factors on inactivation of Saccharomyces cerevisiae by high voltage pulsed electric fields, Food Eng. Prog., 12(3), 154-162.
  13. Souza, A.V.A., Rosario, F. and Cajaiba, J. (2019). Evaluation of calcium carbonate inhibitors using sintered metal filter in a pressurized dynamic system, Materials, 12(11), 1849-1861. https://doi.org/10.3390/ma12111849
  14. Tchobanoglous, G. and Schroeder, E.D. (1985). Water quality, characteristics, modeling, modification. Pearson Education Inc., USA, 257-259.
  15. Yang, Y., Fridman, A. and Cho, Y.I. (2010a). Plasma discharge in water, Adv. Heat Transf., 42, 179-292. https://doi.org/10.1016/S0065-2717(10)42003-1
  16. Yang, Y., Kim, H., Starikovskiy A., Fridman A. and Cho Y.I. (2010b). Application of pulsed spark discharge for calcium carbonate precipitation in hard water, Water Res., 44, 3659-3668. https://doi.org/10.1016/j.watres.2010.04.024
  17. Zuo, Z., Yang, W., Zhang, K., Chen, Y., Li, M., Zuo, Y., Yin, X and Liu, Y. (2020). Effect of scale inhibitors on the structure and morphology of CaCO3 crystal electrochemically deposited on TA1 alloy, J. Colloid Interface Sci., 562, 558-566. https://doi.org/10.1016/j.jcis.2019.11.078