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研究了1种生物陶吸附Cd2+的优化条件,并以吸附动力学和热力学探讨吸附机理.结果表明,生物陶吸附Cd2+的优化条件为:溶液温度为293.15 K,生物陶投加量为1g/L,溶液初始pH为5.5,吸附在31h内达到平衡,溶液中Cd2+的去除率为95.30％;准1级动力学模型更准确的反映了生物陶吸附Cd2+的吸附动力学;Freundlich模型比Langmuir模型更好的描述生物陶吸附Cd2+的等温吸附行为,该吸附过程受颗粒内扩散、液膜扩散等步骤控制;Gibbs自由能变△G(①)＜0、焓变△H(①)＞0、熵变△S(①)＞0,表明Cd2+在生物陶上的吸附为自发的、吸热的、趋于无序的吸附过程.“,”The optimal working conditions for Cd2+ adsorption by biopottery were studied herein as well as the adsorption mechanism on kinetics and thermodynamics.The results revealed that the optimal biopottery power dose,initial pH,solution temperature were 1.0 g/L,5.5 and 293.15 K,respectively,and the equilibration time was 31 h and the removal rate of Cd2+ was 95.30％;The adsorption kinetics followed pseudo-first-order kinetic equation.The adsorption could be well described by the Freundlich adsorption isotherm.The Gibbs free energy (△G(①)) was negative,while the enthalpy change (△H(①))and entropy change (△S(①)) were positive,indicating that the adsorption was a spontaneous,endothermic and increasing entropy process.