响应面法优化锰改性介孔陶粒去除铊废水工艺OA
Process optimization via response surface methodology for thallium removal wastewater by manganese-modified mesoporous ceramsite
为开发适用于水体铊污染治理的新型吸附剂,以锰改性介孔陶粒(Mn@Sic-MC)作为吸附材料,结合响应面法,通过单因素实验优化吸附条件,探究除铊(Tl)机理.实验结果表明,在响应面法优化获得的最佳条件(初始pH值为3.8,吸附剂投加量为53.5 g/L,吸附时间为9.9 h)下,Mn@Sic-MC对Tl的去除率达94.97%.静态吸附实验表明,吸附过程符合准二级动力学和Freundlich等温模型;竞争吸附实验结果显示,相对Tl单元体系,Tl-Pb、Tl-Zn二元体系及Tl-Pb-Zn三元体系中Tl的去除率分别下降了16.47%、18.93%和7.80%,但仍保持较高的去除效果,展现出良好的选择吸附性;解吸再生实验证实,Mn@Sic-MC具有一定的循环性能,3次再生后去除率仍保持85%以上,且材料损失率低于5%.研究成果可为重金属污染水体的治理提供借鉴.
To develop novel adsorbents for treating thallium(Tl)contaminated water,manganese-modified mesoporous ceramsite(Mn@Sic-MC)was prepared and employed as the adsorbent.Single-factor experiments combined with response surface methodology(RSM)were applied to optimize the absorption conditions and to explore the T1-removal mechanism.Under the RSM-optimized parameters(initial pH of 3.8,adsorbent dosage of 53.5 g/L,a contact time of 9.9 h),a Tl removal efficiency of 94.97%was achieved.The adsorption process was well described by the pseudo-second-order kinetic model and the Freundlich isotherm model.Competitive adsorption experiments revealed that,relative to the singleTl system,the removal efficiency of T1 decreased by 16.47%,18.93%,and 7.80%in the TlPb,TlZn,and TlPbZn systems respectively.Nevertheless,a high removal performance was maintained,demonstrating the favorable selective adsorption capability of Mn@SicMC.Desorption-regeneration experiments confirmed the material's recyclability,as the removal efficiency remained above 85%after three cycles,with a material loss rate below 5%.The study provides useful insights for the treatment of heavy-metal-contaminated wastewater.
韩磊;余江;韩诚;蒋红斌;王璞;常凯威;曾子馨;罗洁;李佳毅;黄彭鑫悦
四川大学建筑与环境学院,四川 成都 610065||四川大学宜宾产业技术研究院,四川 宜宾 644010四川大学建筑与环境学院,四川 成都 610065||四川大学宜宾产业技术研究院,四川 宜宾 644010四川省土地发展集团盐边有限责任公司,四川 攀枝花 617121四川省遂宁生态环境监测中心站,四川 遂宁 629002四川省遂宁生态环境监测中心站,四川 遂宁 629002四川大学建筑与环境学院,四川 成都 610065四川大学建筑与环境学院,四川 成都 610065||四川大学宜宾产业技术研究院,四川 宜宾 644010四川大学建筑与环境学院,四川 成都 610065四川大学建筑与环境学院,四川 成都 610065四川大学建筑与环境学院,四川 成都 610065
资源环境
修复材料废水处理吸附模型锰改性介孔陶粒含铊废水吸附剂响应面法选择性吸附
remediation materialswastewater treatmentadsorption modelmanganese-modified ceramsitethallium-containing wastewateradsorbentresponse surface methodselective adsorption
《深圳大学学报（理工版）》 2026 (1)
26-35,10
National Key Research and Development Program of China(2018YFC1802605)Science and Technology Project of Sichuan University-Suining City Strategic Cooperation"Unveiling the List and Leading the Way"(2024CDSN-09)Project of Panzhihua Science and Technology Bureau Guiding Science and Technology(2024ZD-S-107) 国家重点研究开发计划资助项目(2018YFC1802605)四川大学-遂宁市校市战略合作"揭榜挂帅"科技资助项目(2024CDSN-09)攀枝花科学技术局指导性科技计划资助项目(2024ZD-S-107)
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