Supplemental Information

Development of a Novel Electrostatic Precipitator System

Using a Wet-porous Electrode Array

Woojin Kim1*, Heekyung An1, Dongmok Lee1, Woojong Lee1, Jae Hee Jung2*

1Technology Convergence R&BD Group, Korea Institute of Industrial Technology, 320 Techno-

sunhwan-ro, Yuga-myeon, Dalseong-gun, Daegu, 711-880, Republic of Korea

2Center for Environment, Health, and Welfare Research, Department of Energy and Environmental

Engineering, Korea University of Science and Technology (UST), Korea Institute of Science and

Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea

1

Figure S-1. (a) Surface deviations of the liquid layer on the wet porous electrode. (b) X-ray

photograph and (c) the surface roughness distribution of the wet porous electrode. These data were

analyzed by a X-ray micro-focus computed tomography scanner (Model phoenix v|tome|x m, GE

Measurement & Control Solutions, Billerica, MA, USA). The surface deviations of the liquid layer

were distributed within ±30 µm from the reference plane, a significant improvement compared with

that of a traditional wet ESP. Generally, the thickness of the liquid layer in a traditional wet ESP is

approximately 4–6 mm, and the surface deviation of the liquid layer is ±180~500 µm from the

reference plane (Dors et al., 1998; Saiyasitpanich et al., 2006; Lin et al., 2010).

2

References

Dors, M., Mizeraczyk, J., Czech, T., Rea, M. (1998). Removal of NOx by DC and pulsed corona

discharges in a wet electrostatic precipitator model. J. Electrostat., 45:25‒36.

Lin, G. Y., Tsai, C. J., Chen, S. C., Chen, T. M., Li, S. N. (2010). An efficient single-stage wet

electrostatic precipitator for fine and nano-sized particle control. Aerosol Sci. Tech., 44:38‒45.

Saiyasitpanich, P., Keener, T. C., Lu, M., Khang, S. J., Evans, D. (2006). Collection of ultrafine

diesel particulate matter (DPM) in cylindrical single-stage wet electrostatic precipitators. Environ.

Sci. Technol., 40:7890‒7895.

(b) (c)n= 2000

3