张岩 薛李铭 梁茹茹 刘仁平

摘 要：針对目前抗生素菌渣不能短时间内大量资源化利用问题，采用热重-差示扫描量热仪（TG-DSC）分别研究了青霉素菌渣及其与煤混合的燃烧特性和动力学，探讨了掺有5%～30%菌渣的混合燃烧过程，利用flynn-wall-ozawa（FWO）和vyazovkin（V）方法计算混合物燃烧过程的活化能，并采用积分主图法求解机理函数。结果表明：混合燃烧过程包括菌渣的挥发分燃烧和煤固定碳燃烧2个阶段;当菌渣掺比为10%时，混合物平均活化能最低，协同效应最强，2种计算方法所得活化能分别为139.63 kJ/mol（FWO）和141.67 kJ/mol（V）;通过积分主图方法求解其机理函数，燃烧反应第1阶段机理函数为[-ln（1-α）]4，反应机理为“随机成核和随后生长”，第2阶段机理函数为α2，反应机理为“一维扩散”。实验结果揭示了菌渣与煤混合燃烧的协调反应机理，可为实现菌渣的资源化处理提供理论支持。

关键词：固体污染防治工程;青霉素菌渣;煤;混合燃烧;协同效应;动力学

中图分类号：X705;X787   文献标识码：A

DOI：10.7535/hbkd.2022yx01012

收稿日期：2021-09-09;修回日期：2021-12-12;责任编辑：王淑霞

基金项目：国家联合基金（U20A20130）;河北省科技计划项目（2018JJ3174）

第一作者简介：张 岩（1995—），男（满族），河北承德人，硕士研究生，主要从事固体废物资源化处理方面的研究。

通讯作者：刘仁平副教授。E-mail：pingrenliu@163.com

Co-combustion kinetic and synergistic effects analysis of penicillin residue and coal

ZHANG Yan1，XUE Liming2，LIANG Ruru1，LIU Renping1

（1.School of Environmental Science and Engineering，Hebei University of Science and Technology，Shijiazhuang，Hebei 050018，China;2.Jiaxing Jiashan Ecological Environment Monitoring Station，Jiaxing，Zhejiang 314050，China）

Abstract：Aiming at the problem that antibiotics residue could not be utilized in a short time，the combustion characteristics and kinetics of penicillin residue and its mixture with coal were investigated by using thermogravimetry-differential scanning calorimetry（TG-DSC）.The combustion process of blends （denoted as 5%～30%for the mass fraction bacterial residue） were systematically investigated，and the activation energy of the combustion process of the blends were calculated by flynn-wall-ozawa（FWO） and vyazovkin（V），andthe kinetic mechanism functions were solved by the integral master graph method.The results show that co-combustion of the blends mainly consists of two stages which are the volatile matter combustion of antibiotics residue and the combustion of coal fixed carbon.When the antibiotics residue blending ratio is 10%，the average activation energy of the blends is the lowest，the synergistic effects are the strongest，and the activation energy calculated by the two methods are 139.63 kJ/mol （FWO） and 141.67 kJ/mol （V），respectively.The mechanism functions are further solved by integrating master graph method，and the mechanism function of the first stage of combustion reaction is [-ln（1-α）]4，the reaction mechanism is “random nucleation and subsequent growth”，the mechanism function of the second stage is α2，and the reaction mechanism is “one-dimensional diffusion”.The results reveal the coordinated reaction mechanism of the mixed combustion of antibiotics residue and coal，which provides theoretical support for the realization of the resource treatment of antibiotics residue.

Keywords：

solid pollution prevention and control project;penicillin residue;coal;co-combustion;synergistic effects;kinetics

中国是世界上抗生素产量最大的国家，每年生产抗生素约24.8万t，种类达70多种，菌渣年产量达200万t以上[1-2]。依据2019修订后的《国家危险废物名录》，抗生素残留物被列为一类危险废物，禁止作为饲料、肥料及其添加剂处置和利用[3-4]。

中国是水泥生产大国，水泥窑数量众多，在水泥窑内可以短时间内处理大量有机废物，并将重金属固定到熟料中。……