[논문]마이크로 버블 부상 공정에 의한 염료폐수의 색도 제거

김명주; 한신호

doi:10.14478/ace.2022.1100

마이크로 버블 부상 공정에 의한 염료폐수의 색도 제거
Colour Removal from Dyestuff Wastewater by Micro Bubbles Flotation Process 원문보기

공업화학 = Applied chemistry for engineering, v.33 no.6, 2022년, pp.606 - 612

김명주 (한국공학대학교 생명화학공학과) , 한신호 (한국공학대학교 생명화학공학과)

초록
AI-Helper

수용액에서 수용성 염료를 소수성 염료로 전환시킨 후 마이크로 버블을 이용한 침전 및 부상응집에 의한 염료를 제거하는 연구를 수행하였다. 양이온성 염료에 음이온 collector를 반응시키며, 또한 음이온성 염료에 양이온 collector를 첨가하여 소수성으로 변환시켰다. 소수성으로 전환된 염료 용액을 회분식 반응기에 저장하여 마이크로 버블을 분사시켜 색을 제거하였다. 염료 용액을 제조하기 위해 Basic Yellow 1 및 Direct Orange 10을 사용하였으며, sodium dodecyl sulfate, oleic acid sodium salt 및 amine류와 같은 음이온 및 양이온 collector를 사용하면 색 제거에 효과적이었으며, 모든 색은 8분 이내에 제거되었다. 색 제거는 collector의 첨가량과 수용액 pH의 영향을 받으며, 염료농도에 비해 극히 소량의 계면활성제를 첨가하였을 경우에는 pH에 의존하였으나, 염료농도와 비슷한 collector 양을 첨가하였을 경우에는 pH에 의존하지 않았음을 알 수 있었다. 그 이유는 collector와 염료가 1:1M로 반응하여 소수성이 완전히 부여되어야 제거됨을 알 수 있었다.

Abstract ▼ AI-Helper

The purpose of this study is to convert hydrophobic dyestuff to hydrophilic dyestuff by reacting cationic collector with anionic dyestuff and reaction anionic collector with cationic dyestuff. The removal of colors from aqueous solutions and/or dispersions has been studied by dispersed-air flotation in a batch column. In this studies used generated micro bubble by ceramic gas diffuser having micro pore size for air flotation process. In this study, a ceramic gas diffuser with micro pore size was used to generate micro bubbles for the air flotation process. Two colours were used for the experiments: Basic Yellow 1 (cationic dyestuff) and Direct Orange 10 (anionic dyestuff). All two were effectively removed by flotation within 8 mins. Sodium dodecyl sulfate, sodium oleate (an anionic collector), and amines (a cationic collector) were found to be effective as collectors in the removal of color, which was found to be related to the pH of the solution and the amount of collector added to it, with high collector dosages causing the process to become pH-independent.

주제어

표/그림 (16)

그림 Figure 1. Experimental apparatus of micro bubbles flotation process.
표 Table 1. Properties of Collectors
그림 Figure 2. Colours removed from solution by flotation.
그림 Figure 3. Influence of temperature for the colour removal on cationic dyestuff (Basic Yellow 1 : 50mg/L) and the amount of anioic collector (sodium lauryl sulfate: NaLS).
그림 Figure 4. Influence of temperature for the colour removal on anionic dyestuff (Direct Orange 10 : 50 mg/L) and the amount of cationic collector (dodecylamne).
그림 Figure 5. Colour (Basic Yellow 1) removal by flotation as a function of collector concentration [mg/L]. Collector; sodium lauryl sulfate (NaLS, pH 5~6), initial colour concentration; 50 mg/L (1.45 × 10^-4 M).
그림 Figure 6. Colour (Basic Yellow 1) removal by flotation as a function of collector concentration [mg/L]. Collector; sodium oleate (NaOl, pH 9.0), initial colour concentration: 50 mg/L 1.45 × 10^-4 M).
그림 Figure 7. Effect of collector: colour concentration ratio on colour(Basic Yellow 1) removal by flotation. Initial colour concentration; 50 mg/L (1.45 × 10^-4 M).
그림 Figure 8. Chemical equation on reaction cationic dye and anioic collector.
그림 Figure 9. Colour (Direct Orange 10) removal by flotation with various amines as collector (conc. 8 mg/L) in pH 4.
그림 Figure 10. Colour (Direct Orange 10) removal by flotation with various amines as collector (conc. 12 mg/L) in pH 4.
그림 Figure 11. Colour (Direct Orange 10) removal by flotation with dodecylamine in pH 4.
그림 Figure 12. Colour (Direct Orange 10) removal by flotation with dodecylamine in pH 6.
그림 Figure 13. Effects of pH and a dosage of dodecylamine on colour (Direct Orange 10) removal by flotation.
그림 Figure 14. Effect of collector (dodecylamine) concentration on color (Direct Orange 10) removal by flotation.
그림 Figure 15. Chemical equation on reaction anionic dye and cationic collector.

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표제어: PCR

동의어: Packet Collision Rate

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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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