中国农业科技导报2025，Vol.27Issue(5)：239-249,11.DOI:10.13304/j.nykjdb.2023.0917
双活化法制备山竹壳多孔炭材料及其对刚果红的吸附性能研究
Preparation of Porous Carbon Material from Mangosteen Shell by Double Activation Method and Its Adsorption Properties for Congo Red
摘要
Abstract
The porous carbon material-based mangosteen shells had been successfully prepared by a one-step carbonization method of potassium tartrate and zinc chloride,a new green compound activator.The preparation conditions were optimized and the adsorption properties were investigated.Taking the iodine adsorption value as the evaluation index,the adsorption capacity of porous carbon in mangosteen shell was determined under different conditions,the results showed that under the conditions of impregnation ratio between mangosteen shell powder and composite activator was 1∶1.5,the mass ratio of potassium tartrate to zinc chloride was 1.5∶1,activation temperature 700℃and activation time 1 h,the adsorption capacity of porous carbon material based mangosteen shell(SSZAC3-700)was the highest,reaching 1 068 mg·g-1.The morphology,pore structure and surface functional groups of the materials were characterized by field emission scanning electron microscopy,specific surface area and pore analyzer,and infrared spectroscopy,respectively.The results showed that the specific surface area of SSZAC3-700 was 1 294.69 m2·g-1,and the total pore volume was 0.651 0 cm3·g-1.The pore structure was dominated by micropores,and there were a large number of oxygen-containing functional groups.The adsorption experiments of Congo red showed that the adsorption kinetics of SSZAC3-700 conformed to the quasi-second-order kinetic model,which was mainly chemisorption.The isothermal adsorption process was the Langmuir adsorption isothermal adsorption model with monolayer adsorption.The thermodynamic results(ΔH>0)indicated that the adsorption process was an endothermic process.The adsorption and regeneration times of SSZAC3-700 for Congo red were 3 times,and the removal rate was much higher than that of the commercially available activated carbon.The preparation method facilitated the utilization of agricultural waste mangosteen shells,offering a novel approach for the comprehensive recycling of such shells and presenting a straightforward and expeditious solution for eliminating dye residues in the environment.关键词
山竹壳/多孔炭/吸附性能/刚果红/酒石酸钾Key words
mangosteen shell/porous carbon/adsorption performance/Congo red/potassium tartrate分类
农业工程引用本文复制引用
王宏利,牛琳,赵晓丹,陈雷,刘冰..双活化法制备山竹壳多孔炭材料及其对刚果红的吸附性能研究[J].中国农业科技导报,2025,27(5):239-249,11.基金项目
广西"三区人才"项目. （）
