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文章摘要

海相烃源岩吸附水中重金属的机理及行为研究

Study on Mechanism and Kinetics of Marine Source Rocks Adsorption of Heavy Metals in Water

DOI：

英文关键词: Heavy metal ions Marine source rock Adsorption kinetics Adsorption isotherm Wastewater treatment

基金项目:国家自然科学基金资助项目（42072201）；安徽高校协同创新基金资助项目（GXXT-2021-017）；安徽省一般工业固废处置与资源化利用工程研究中心科技攻关基金资助项目（KJGG-2022-7）

作者	单位
张顶	安徽大学资源与环境工程学院；安徽省矿山生态修复工程实验室
郑刘根	安徽大学资源与环境工程学院；安徽省矿山生态修复工程实验室
丁丹	安徽省一般工业固废处置与资源化利用工程研究中心
单士锋	安徽省一般工业固废处置与资源化利用工程研究中心
罗传华	安徽省一般工业固废处置与资源化利用工程研究中心

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中文摘要:

选用铜陵二叠系栖霞组灰岩（海相烃源岩）制备吸附材料，去除废水中的Cu2+、Pb2+、Zn2+和Cd2+，并通过SEM、FT-IR、XRD、XPS等测试手段对其吸附前后的微观结构进行表征，分析其吸附过程中的影响因素及吸附机理。结果表明，制备的海相烃源岩吸附材料对废水中的Cu2+、Pb2+、Zn2+ 和Cd2+去除率分别达到987%、990%、968%和979%，吸附主要发生在前30 min；Cu2+、Pb2+和Zn2+ 3种重金属离子的吸附偏向于准一级动力学模型，Cd2+的吸附在准一级动力学模型和准二级动力学模型都能较好拟合；海相烃源岩矿物材料对Cu2+和Zn2+的吸附符合Langmuir模型，而对Pb2+和Cd2+的吸附则更符合Freundlich模型。

英文摘要:

Cu2+，Pb2+，Zn2+ and Cd2+ in wastewater were removed by an adsorbent material prepared from limestone of Qixia Formation in Permian System in Tongling（marine source rock）， the microstructure before and after adsorption was determined by SEM，FT IR，XRD and XPS， and the influencing factors and adsorption mechanism were analyzed. The results showed that the removal rates of Cu2+，Pb2+，Zn2+ and Cd2+ in wastewater by the prepared marine source rock adsorption material were 987%，990%，968% and 979%，respectively. The adsorption occurred mainly in the first 30 minutes. The adsorption of Cu2+， Pb2+ and Zn2+ tended to conform to quasi first order kinetic model， and the adsorption of Cd2+ fit 〖JP2〗well with both quasi first order kinetic〖JP〗 model and quasi second order kinetic model. The adsorption of Cu2+ and Zn2+ conformed to Langmuir model， while the adsorption of Pb2+ and Cd2+ was more consistent with Freundlich model.

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