磁性水热炭对重金属离子铅的吸附性能研究  

Study on the adsorption performance of magnetic hydrothermal carbon on heavy metal ion lead

作　　者：吴凡 何宗文 刘雪梅[1] 黄晶 WU Fan;HE Zong-wen;LIU Xue-mei;HUANG Jing(College of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;Fengcheng Water Resources Bureau,Fengcheng 331100,China)

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]丰城市水利局,江西丰城331100

出　　处：《应用化工》2020年第8期1892-1898,共7页Applied Chemical Industry

基　　金：国家自然科学基金项目(41867020)。

摘　　要：研究磁性水热炭对Pb^2+的吸附,采用原子吸收光谱仪测定Pb^2+的浓度,控制单因素变量法研究了投加量、pH、时间和初始离子浓度等对Pb^2+的吸附研究。结果表明,在初始离子浓度50 mg/L,投加量为0.05 g、pH 5.0,温度30℃以及吸附时间2 h时,吸附去除率达到93.88%,吸附量为46.94 mg/g。用准二级动力学方程模拟实验数据,相关系数可达到0.9999,吸附过程可用Langmuir吸附等温模型来描述,说明磁性水热炭对Pb^2+的吸附过程为单分子层的化学吸附。The adsorption of Pb^2+was studied by magnetic hydrothermal carbon.The concentration of Pb^2+was determined by atomic absorption spectrometer.The results showed that the adsorption removal rate reached 93.88%and the adsorption capacity was 46.94 mg/g when the initial ion concentration was 50 mg/L,the dosage was 0.05 g and pH 5.0,the temperature was 30℃and the adsorption time was 2 h.The correlation coefficient can reach 0.9999,and the adsorption process can be described by the Langmuir adsorption isothermal model,indicating that the adsorption process of magnetic hydrothermal carbon on Pb^2+is chemical adsorption of single molecular layer.

关 键 词：橘子皮 磁性水热炭 铅离子 吸附 原子吸收光谱法 

分 类 号：TQ09[化学工程]