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.
关键词
氯化铁/污泥基/活性炭/刚果红/吸附
Key words
iron chloride/sludge-based/activated carbon/Congo Red/adsorption
万方数据