【摘要】 采用热解的方法用市政污泥制备污泥热解炭，用吸附实验方法探讨了市政污泥热解炭对Pb²⁺的吸附性质及影响因素。结果可得：当热解温度为800℃时，市政污泥热解所得的热解炭对Pb²⁺有较好的吸附性能。在实验温度为25℃、pH为6.06、投加量1 g/L的条件下，MSB800对Pb²⁺的最大吸附容量为140.16 mg/g,吸附平衡时间为30 min,并且对Pb²⁺的吸附动力学和等温吸附线分别可以用拟二级动力学和Langmuir等温线描述。通过SEM、FTIR和XRD等手段对污泥热解炭吸附前后的表征分析可得，热解炭对Pb²⁺的吸附机制可能为：矿物沉淀和阳离子-π作用。更多还原

【Abstract】 The pyrolysis method was used to prepare sludge pyrolysis carbon from municipal sludge, and the adsorption properties and influencing factors of municipal sludge pyrolysis carbon for Pb²⁺ were discussed using adsorption experimental methods. The results could be obtained: when the pyrolysis temperature was 800 ℃, the pyrolytic carbon obtained from the pyrolysis of municipal sludge had better adsorption performance for Pb²⁺. Under the conditions of the experimental temperature of 25 ℃, pH of 6.06, and dosage of 1 g/L, the adsorption capacity of MSB800 for Pb²⁺ was 140.16 mg/g, the adsorption equilibrium time was 30 min, and the adsorption kinetics and isothermal adsorption line of Pb²⁺ They could be described by pseudo-second-order kinetics and Langmuir isotherm respectively. Characterization analysis of sludge pyrolytic carbon before and after adsorption by means of SEM, FTIR and XRD revealed that the adsorption mechanism of Pb²⁺ by pyrolytic carbon may be: mineral precipitation, functional group complexation and ion exchange.更多还原