微波-水蒸气法再生载亚甲基蓝废活性炭研究  

Study on microwave regeneration and characterization of activated carbon

作　　者：庄兆意[1] 王永民 庞健 苏红乡 杨冬[1] ZHUANG Zhaoyi;WANG Yongmin;PANG Jian;SU Hongxiang;YANG Dong(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China;Jinan Energy and Food Comprehensive Administrative Law Enforcement Detachment,Jinan 250102,China;Municipal Branch of Shandong Urban and Rural Planning And Design Institute Co.,Ltd.,Jinan 250014,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101 [2]济南市能源和粮食综合行政执法支队,山东济南250102 [3]山东省城乡规划设计研究院有限公司市政分院,山东济南250014

出　　处：《山东建筑大学学报》2024年第2期60-64,共5页Journal of Shandong Jianzhu University

基　　金：国家自然科学基金青年项目(51708339);山东省自然科学基金面上项目(ZR2022ME102);济南市科研带头人工作室项目(202333050);山东省科技型中小企业创新能力提升工程项目(2023TSGC0052,2023TSGC0074)。

摘　　要：基于微波的加热特性和活性炭的吸波性,探索出可行、有效的活性炭再生方法,能增加失效活性炭的重复使用率,节约废水处置经济成本。文章采用微波联合水蒸气法进行再生实验,以亚甲基蓝吸附值作为指标评估再生效果,设立单因素实验和三因素三水平正交实验,研究微波功率、微波时间以及蒸气流量对生物炭再生的影响规律,并对原炭、废炭和再生后活性炭开展X射线衍射表征。结果表明:微波功率对再生效果影响最大,且微波功率和蒸气流量越大,再生效果越好,但微波时间不宜过长,在微波功率为800 W、微波时间为15 min和蒸气流量为5 mL/min条件下,再生活性炭的再生率约为75%;微波加热可使吸附质热解,并且水蒸气可清理炭孔,使活性炭恢复到原有的吸附活性,再生活性炭的效果较好,且成本低,可应用到实际工程中。In the pursuit of enhancing the reuse potential of activated carbon,this paper leverages the favorable microwave heating characteristics and absorptive properties of activated carbon.Corn straw activated carbon was taken as the experimental object,microwave combined with steam method was employed to conduct the regeneration experiment.The regeneration effectiveness is assessed through the methylene blue adsorption value.Both Single-factor experiment and three-factor,three-level orthogonal experiment were set up to scrutinize the effects of microwave power,microwave time and steam flow on biochar regeneration.Additionally,X-ray diffraction characterization is employed for raw carbon,waste carbon,and regenerated activated carbon.The experimental results indicate that the power exerts the most significant influence on the regeneration effect,and the higher power and steam flow correlating to superior regeneration effects.Nonetheless,it is essential to avoid excessive microwave duration.The regeneration rate of activated carbon reaches approximately 75%under the microwave power of 800 W,microwave time of 15 min and steam flow of 5 mL/min.Microwave heating can facilitate the pyrolysis of adsorbent,and steam can clean the carbon pore,so that the activated carbon can recover the original adsorption activity.This method demonstrates notable efficacy,is cost-effective,and holds promise for practical engineering applications.

关 键 词：废活性炭 再生 微波 

分 类 号：X703[环境科学与工程—环境工程]