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이온 및 흡착콜로이드부상의 거품분리기술을 이용한 수용액 중의 Direct Blue 제거

Removal of Direct Blue from Aqueous Solution by the Foam Separation Techniques of Ion and Adsorbing Colloid Flotation

최연홍 이주동 최상준

Choi YH Lee JD Choi SJ

HWAHAK KONGHAK, February 1997, 35(1), 63-68(6), NONE

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Abstract

수용액 중의 Direct Blue 제거를 위하여 이온 및 흡착콜로이드부상의 두 가짖 거품분리기술을 이용하여 행하였다. 이온부상법에서는 초기농도 25ppm의 Direct Blue 수용액을 3분처리 후 잔존 Direct Blue의 농도를 0.5ppm 미만으로 낮출 수 있었으며, 흡착콜로이드부상에서는 2분처리 후 잔존 Direct Blue의 농도를 0.1ppm 미만으로 낮출 수 있었다. 수용액 중의 Direct Blue의 제거를 위한 최적 pH는 이온부상에서는 pH4이고 흡착콜로이드부상에서는 pH3-5였다. Direct Blue 제거효율에 영향을 미치는 인자들인 계면활성제, 외부이온, Al(Ⅲ) 첨가 등의 영향에 대해 조사하였다. 아울러 수용액 중의 Direct Blue의 제거에 있어서 이온부상법과 침전부상법의 흡착기구 및 분리메카니즘을 비교하여 관찰하였다.

Experimental investigations on the removal or Direct Blue from an aqueous solution were carried out through two foam separation techniques : ion flotation and adsorbing colloid flotation with Fe(Ⅲ). The residual concentration of Direct Blue can be lowered to below 0.5ppm in 3 minutes by ion flotation and below 0.1ppm in 2 minutes by adsorbing colloid flotation from the aqueous solution containing 25ppm of Direct Blue. The optimum pH for the removal of Direct Blue was found to be 4 for the ion flotation and 3-5 for the adsorbing colloid flotation. The effects of surfactant, foreign ions, and Al(Ⅲ) addition on the removal of Direct Blue are discussed. The adsorption and separation mechanism on the removal of Direct Blue by the foam separation techniques of ion and adsorbing colloid flotation were also observed.

Keywords

Foam Separation Ion Flotation Adsorbing Colloid Flotation Dye Wastewater

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