The adsorption of Pb~(2+)and Cr~(3+) is monolayer adsorption which can be described by Langnuir and two-stage Freundlich equations,and the fitting exponential of Freundlich indicates that PCB has a favorable adsorption effect for Pb~(2+)and Cr~(3+).

• Pb2+和Cr3+的吸附为单分子层吸附,可用Langnu ir和两段Freund lich等温吸附式描述,Freund lich拟合指数表明,热解炭具有较好的吸附性能。