摘要
通过高温下在N2中热解合成一种铁-氮-碳吸附材料,通过SEM、EDS、TEM和XRD等对其结构进行表征,试验了初始pH、投加量、吸附时间、温度和初始浓度等条件对吸附除磷效果的影响。结果表明,制备的材料在pH为1,温度25℃时,对磷的最大吸附容量可达3.47 mg·g^(-1)。吸附动力学符合准二级动力学方程,以单层的化学吸附为主,且材料对磷酸盐的吸附等温线符合Freundlich方程。该材料对富营养化水体磷吸附去除具有一定应用潜力。
In this study,an iron-nitrogen-carbon adsorption material was synthesized by pyrolysis in N_(2) at high temperature.The structure was characterized by SEM,EDS,TEM and XRD.The effect of the prepared material on phosphorus removal performance were examined under different levels of dosage,adsorption time,pH,temperature and initial phosphorus.The results demonstrated that the prepared material had a maximum adsorption capacity of 3.47 mg·g^(-1) for phosphorus at a pH of 1 and a temperature of 25℃.The adsorption kinetics conformed to the quasi-second-order kinetic equation,indicative of single-layer chemical adsorption mode.The adsorption isotherm satisfied the Freundlich equation.Thus,this material has certain application potential for the removal of phosphorus in eutrophic water.
作者
耿店山
冯丽娟
穆军
GENG Dian-shan;FENG Li-juan;MU Jun(School of Marine Science and Technology of Zhejiang Ocean University,Zhoushan 316022;College of Ecological Environment,Hainan Tropical Ocean University,Sanya 572022,China)
出处
《浙江海洋大学学报（自然科学版）》
CAS
2021年第4期342-349,共8页
Journal of Zhejiang Ocean University：Natural Science
基金
国家自然科学基金(31470540)
浙江省自然科学基金(LQ17C030001)。
关键词
Fe-Nx-C
除磷
吸附
废水处理
Fe-Nx-C
phosphorus removal
adsorption
wastewater treament
作者简介
耿店山(1995-),男,安徽霍邱人,硕士研究生,研究方向:海洋环境污染防治.E-mail:447798559@qq.com;通信作者:穆军.E-mail:mujun@zjou.edu.cn。
