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비활성 고체입자가 회전원판전극에의 물질전달에 미치는 영향
Influence of Suspended Inert Particles on Mass Transfer to a Rotating Disk Electrode
HWAHAK KONGHAK, October 1983, 21(5), 235-244(10), NONE
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Abstract
전해질용액속에 첨가된 비활성 고체입자가 물질전달속도에 미치는 영향을 조사하기 위하여 직경 1.13 ㎝의 음극회전원판에서 ferric cyanide가 환원될 때의 한계전류밀도를 측정하였다. 7가지 크기의 고체입자를 8∼40 vol% 첨가하였고 원판의 회전속도 범위는 500∼3,000 rpm로 하였다. 실험결과에 의하면 고체입자의 첨가로 인하여 한계전류밀도는 증가하였으며 원판은 높은 회전범위에서 3배까지 증가시킬 수 있었고 입자의 크기로는 15.0μm정도의 것이 최대치를 나타내었다.
In order to investigate the influence of suspended inert solids on the rate of mass transfer, limiting current densities for the reduction of ferric cyanide at a rotating disk were measured in the presence of 8∼40 % by volume of particles. Experiments were conducted with seven different particle diameters, and with rotation speeds in the range of 500∼3,000 rpm, using a 1.13 ㎝ diameter disk electrode.
It was found that at a given rpm upon addition of particles the limiting current density may increase to about three times its value without particles, and this increase was greater at high rotation speeds; the 15μm particles yielded the highest value.
It was found that at a given rpm upon addition of particles the limiting current density may increase to about three times its value without particles, and this increase was greater at high rotation speeds; the 15μm particles yielded the highest value.