폐감귤박으로 만든 활성탄을 이용한 염료 Eosin Y 흡착에서 반응표면 모델링 = Response Surface Modeling for the Adsorption of Dye Eosin Y by Activated Carbon Prepared from Waste Citrus Peel

국문 초록 (Abstract)

반응 표면법(RSM)과 Box-Behnken 설계(BBD) 통계 방법을 사용하여 폐감귤박으로 만든 활성탄(WCAC)에 의한 염료Eosin Y의 흡착을 검토하였다. 실험은 Eosin Y의 농도(Conc. : 30~50 mg/L), 용액 온도(Temp. : 293~313 K) 및 흡착제투여량(Dose : 0.05~0.150 g/L)의 3가지 입력 변수를 가진 BBD에 따라 수행하였다. 염료 Eosin Y 제거에 대해 얻어진 2차 다항식 모델의 회귀분석 결정계수(R²) 값이 0.9851이고 적합성 결여(Lack of fit)의 p 값은 0.342로 실험 데이터는 2차 다항식 모델에 잘 부합하였다. 염료 농도 50 mg/L, 온도 333 K 및 흡착제 투여량 0.1056 g에서 최적 염료 흡착량59.3 mg/g이 얻어졌다. WCAC에 의한 Eosin Y의 흡착공정은 유사 2차 속도식에 의해 잘 기술되었으며, 등온 실험결과는 Langmuir 모델식을 따랐다.

다국어 초록 (Multilingual Abstract)

The adsorption of Eosin Y by the activated carbon (WCAC) prepared from waste citrus peel was investigated by using response surface methodology (RSM) and Box-Behnken design (BBD) statistical procedures. Experiments were carried out as per BBD with three input parameters, the Eosin Y concentration (Conc. : 30~50 mg/L), the solution temperature (Temp. : 293~313 K), and the adsorbent dose (Dose : 0.05~0.15 g/L). Regression analysis showed a good fit of the experimental data to the second-order polynomial model with coefficients of the determination (R²) value of 0.9851 and P-value (Lack of fit) of 0.342. An optimum dye uptake of 59.3 mg/g was achieved at the dye concentration of 50 mg/L, the temperature of 333 K, and the adsorbent dose of 0.1056 g. The adsorption process of Eosin Y by WCAC can be well described by the pseudo second order kinetic model. The experimental data followed the Langmuir isotherm model.

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