Abstract
The effectiveness of graphite in aniline removal through adsorption was studied in batch mode based on four parameters: pH (3 to 11), temperature (30 to 50oC), initial aniline concentration (5 to 25 ppm) and graphite dosage (0.5 to 2.5 g). Box-Behnken design was adopted to build 27 experiments and investigated the manipulated parameters. Highest removal efficiency (95%) of aniline was achieved for 15 ppm solution at temperature of 40 oC and pH 3 using 1.5 g of graphite. Confirmation studies was conducted to evaluate the regression model’s reliability. Principal Component Analysis (PCA) was used to explore the significant experimental variables and spot the outliers. Based on the research outcome, graphite can be feasible for aniline removal as it requires simple processing and available richly in nature.
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