標題: Optimization of carbofuran degradation in microwave-granular activated carbon system using response surface methodology
作者: Remya, Neelancherry
Lin, Jih-Gaw
環境工程研究所
Institute of Environmental Engineering
關鍵字: Carbofuran;Microwave;Granular activated carbon;Central composite design;Regression model
公開日期: 1-Oct-2017
摘要: Present study revealed tremendous improvement in carbofuran degradation in a Microwave - Granular Activated carbon (MW-GAC) system compared to natural hydrolysis process and the degradation half-life was 12 and 0.189 min at a pH of 6 and 10 respectively at a reaction temperature of 80 degrees C. In addition, the effect of several operating parameters such as carbofuran concentration, MW output power and reaction time was modelled using Central composite design (CCD) and response surface methodology (RSM) with 17 experimental runs. Carbofuran degradation/mineralization process was described in terms of carbofuran concentration, MW output power and reaction time. The experimental outcomes from CCD indicated improved degradation and mineralization of carbofuran with the increase in reaction time. On the other hand, lower MW output power resulted in poor degradation and mineralization of carbofuran. RSM showed highest correlation coefficient for carbofuran removal per MW output power, R-w (0.92) and COD removal efficiency, eta(COD) (0.82). Therefore, quadratic models were developed using regression analysis to predict R-w and eta(COD). Good correlation between the observed values and predicted values by the developed models indicated that the developed models can be used to design required R-w and eta(COD) within the experimental conditions.
URI: http://dx.doi.org/10.1016/j.jece.2017.07.045
http://hdl.handle.net/11536/153603
ISSN: 2213-2929
DOI: 10.1016/j.jece.2017.07.045
期刊: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume: 5
Issue: 5
起始頁: 4751
結束頁: 4758
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