硝酸改性猪骨炭去除水中四环素的实验研究  

Experimental Study on Removal of Tetracycline from Water by Nitric Acid Modified Pig Bone Charcoal

作　　者：张岚欣 孙晨光 韩慧娟 王国云 庞克静 刘懿亿 Zhang Lanxin;Sun Chenguang;Han Huijuan;Wang Guoyun;Pang Kejing;Liu Yiyi(College of Resources and Environment Engineering,Shandong University of Technology,Zibo 255000,China;Shandong Dingli Environmental Testing Co.,Ltd.,Zibo 255000,China)

机构地区：[1]山东理工大学资源与环境工程学院,山东淄博255000 [2]山东鼎立环境检测有限公司,山东淄博255000

出　　处：《山东化工》2023年第13期36-40,共5页Shandong Chemical Industry

摘　　要：以猪骨作为原料,利用不同浓度的硝酸溶液改性热解制备生物炭用于去除水中的四环素(TC),发现含量为20%的硝酸改性猪骨炭(HBC)对TC的吸附效果最好,吸附量高达209.25 mg/g。通过扫描电镜(SEM)和傅里叶红外光谱(FTIR)分析HBC的微观结构和组成,利用动力学和等温学模型对TC吸附过程进行拟合,探究硝酸改性猪骨炭对TC的吸附特性。并利用臭氧氧化法进行再生实验,探究其再生效果。结果表明,HBC表面光滑,存在很多孔隙及规则的褶皱,有较多的吸附位点,HBC对TC的吸附过程符合准二级动力学模型和Langmuir等温模型。臭氧氧化时长为1 min,经过2次解吸后,吸附剂的重复利用效率为91.56%。Pig bone was used as raw material,and modified with different concentrations of nitric acid to removing tetracycline(TC)from aqueous solutions.The 20%nitric acid concentration of modified pig bone charcoal(HBC)have the best adsorption effect on TC with an adsorption capacity of 209.25 mg/g.The microstructure and composition of HBC were analyzed by the scanning electron microscopy(SEM)and Fourier infrared spectroscopy(FTIR),and the kinetics and isotherms were used to fit the adsorption of TC onto HBC to explore the adsorption characteristics of HBC.The regeneration experiment was carried out by ozone oxidation method.The results indicated that the HBC surface was smooth with many pores,regular folds and more adsorption sites.In the meantime,the pseudo-second-order kinetic and Langmuir isotherm models were better fitted to the adsorption of TC onto HBC.When the ozone oxidation time was 1 min,the regeneration efficiency of HBC was 91.56%after two recycles.

关 键 词：吸附 生物炭 硝酸 猪骨 四环素 

分 类 号：TQ424.1[化学工程] X712[环境科学与工程—环境工程]