| 초록 |
The aim of this study is to optimize the manufacturing process of polyethylenimine-coated polysulfone-Escherichia coli biomass composite fiber (PEI-PSBF) in aqueous solutions. A reactive dye, Reactive Yellow 2 (RY2) was used as a model pollutant. Three independent values, such as the amounts of biomass (X1), PEI (X2) and glutaraldehyde (X3), and dependent value (Y1, RY2 uptake) were selected and optimized by response surface methodology (RSM) in combination with a 17-run central composite design. The coefficient of determination (R2) was recorded to be 0.9551, indicating that the model used in this work well described the results of the full factorial experiment. Consequently, the optimal manufacturing conditions were predicted as 4.1454 g biomass, 1.1044 g PEI and 3.9 μL glutaraldehyde. The maximum RY2 adsorption capacity of PEI-PSBF fabricated at the optimal manufacturing conditions was 540.52 mg/g, which almost equated to the predicted one (543.72 mg/g) by the RSM. |
