本研究利用農業廢棄物椰殼為原料，以硫酸亞鐵為活化劑，製備高孔隙活性碳。研究中探討活化劑(Fe□)含浸濃度的不同及製備條件不同對於活性碳孔隙結構的影響，如表面積、孔徑大小分佈、孔體積、□吸脫附特性等，並討論活性碳表面結構的不同對於酚溶液吸附效果之差異。由酚溶液的等溫吸附試驗結果，利用Freundlich吸附方程式描述其吸附行為，並探討孔洞特性與吸附行為間之關聯性。研究結果發現，活性碳的表面積和孔隙體積隨著活化劑濃度增加而減少，而表面平均孔徑則會隨之增大，結果顯示含浸劑濃度增加時，會增加活性碳之中孔比例。酚溶液的等溫吸附試驗中，由Freundlich吸附方程式的吸附平衡常數(k)與動力級數(n)得知，k與n值與活性碳表面積大小具有正比之關係，且於酚的吸附試驗中發現以低濃度活化劑所活化的活性碳具有較好的吸附能力與吸附容量。

High sorption performances of activated carbons were prepared by agricultural waste (coconut shell) with iron sulfate (Fe□) as an activation agent. The high porosity structure of activated carbon can be achieved by various preparing conditions, such as concentration of activation agent and the final activation temperature. The high porosity of activated carbon was used to remove the toxic effluent, phenol was used as a target pollutant. This study investigated the effect of preparing conditions on the surface area，pore distribution, pore volume and the sorption isotherm of activated carbon. The relationship between the pore properties of activated carbon and phenol removal was studied by the sorption experiments. It was found that the surface area and pore volume decreased with increasing the concentration of activation agent. The high surface area of activated carbon induced a high removal of phenol in sorption experiment. The Freundlich equation was applied to describe the sorption behavior of activated carbon in the phenol solution. It was found that both of equilibrium constant (k) and affinity (n) values proportionate to the surface area of activated carbon. It was concluded that the higher surface area activated carbon owned a good sorption capacity. A good sorption application for phenol removal in aqueous solution was found in this investigation.