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활성탄소섬유 카트리지 휠터에 의한 수중 잔류염소의 흡·탈착 거동

Adsorption/Desorption Behavior of Residual Chlorine from Aqueous Solution by Activated Carbon Fiber Cartridge Filter

송승필 이재광 유승곤^†

Seung-Phill Song Jae-Kwang Lee Seung-Kon Ryu^†

충남대학교 공과대학 화학공학과, 대전 305-764

Dept. of Chem. Eng., Chungnam National University, Taejon 305-764, Korea

HWAHAK KONGHAK, April 2000, 38(2), 199-203(5), NONE

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Abstract

황성탄소섬유 카트리지 휠터를 제조하고 이 휠터의 수중 잔류염소 흡착 및 탈착 거동을 조사하였다. 2ppm 잔류염소의 흡착파과곡선에서 0.2ppm의 잔류염소농도를 파과점으로 할 때, 파과점까지 활성탄소섬유 카트리지 휠터(Activated Carbon Fiber 함량 : 100g)는 31.5ton, 활성탄소섬유/활성탄 카트리지 휠터(Activated Carbon Fiber 함량 : 50g, Activated Carbon 함량 : 50g)는 8.4ton을 정수하였다. 카트리지 휠터에 의한 압력손실은 유량이 10l/min 일 경우, 활성탄소섬유 휠터의 경우는 120ton 처리까지 0.2kg_f/㎠ 미만이나, 활성탄소섬유와 활성탄을 1:1로 혼합하여 만든 경우는 120ton 처리까지 2.3kg_f/㎠ 이었다. 카트리지 휠터의 탈착은 90℃의 뜨거운 물로 역세척하여 수행하였다. 충분히 역세척이 이루어진 카트리지 휠터의 파과점까지의 제2차 수중 잔류염소 흡착실험으로 탈착률(재생률)을 검사하였다. 그 결과 활성탄소섬유로만 사용한 카트리지 휠터의 탈착률은 거의 70.5%이었으나, 활성탄소섬유와 활성탄을 1:1로 혼합하여 만든 카트리지 휠터의 탈착률은 36.9%이었다. 활성탄소섬유 카트리지 휠터의 탈착률은 역세척수의 온도가 상승할수록 상승했으며, 활성탄이 더해짐에 따라 잔류염소 탈착률이 감소했다.

Cylindrical Activated Carbon Fiber cartridge filters were prepared to investigate their adsorption/desorption behavior of residual chlorine from 2 ppm aqueous solution. From breakthrough profiles, the amount of purified water was 31.5 ton with Activated Carbon Fiber cartridge filter(Activated Carbon Fiber: 100g) while only 8.4 ton with Activated Carbon Fiber/Activated Carbon cartridge filter(Activated Carbon Fiber: 50g, Activated Carbon: 50g) at the breakpoint when the breakpoint was fixed to 0.2 ppm(C/C_o=0.1) residual chlorine. The pressure drop through Activated Carbon Fiber and Activated Carbon Fiber/Activated Carbon cartridge filter were 0.2kg_f/㎠ and 2.3kg_f/㎠, respectively, when 120 ton aqueous solution was passing the cartridges at 10l/min flow rate. The desorption of chlorine from fully used cartridges was performed by reverse washing with hot water 90℃. The desorption efficiency of cartridge was determined by comparison the 2nd adsorption capacity of residual chlorine with the 1st adsorption capacity at breakpoint. The desorption efficiency of Activated Carbon Fiber cartridge was 70.5% while that of Activated Carbon Fiber/ Activated Carbon cartridge was 36.9%. The desorption efficiency of cartridge increased with the temperature of washing water and decreased with the amount of Activated Carbon charged in cartridge.

Keywords

Adsorption Desorption Activated Carbon Fiber Cartridge Filter ACtivated Carbon Fiber Regeneration Residual Chlorine

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