Preparation of Sludge-based Activated Carbon by FeCl3 Activation Method and its Adsorption Performance for Congo Red
The paper used sludge from urban sewage treatment plants as raw material and uses iron chloride(FeCl3)as an activator to prepare sludge-based activated carbon.The sludge-based activated carbon was characterized using N2 adsorption desorption experiments,SEM,XRD,and FTIR,and the adsorption performance toward Congo red was investigated.The research results indicated that the sludge-based activated carbon has a specific surface area of 792 m2/g,belonging to the category of microporous carbon materials.This implied that FeCl3 played a vital role on pore formation as an activating agent.The adsorption of Congo Red by the sludge-based activated carbon followed Langmuir adsorption isotherm equation,with a maximum adsorption capacity of 160.76 mg/g at 25 ℃,indicating excellent adsorption performance.
iron chloridesludge-basedactivated carbonCongo Redadsorption
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