新疆环境保护2025，Vol.47Issue(2)：40-48,9.
改性碳气凝胶作吸附剂去除水中Mn(Ⅱ)
Study on the Removal of Mn(Ⅱ)from Water by Modified Carbon Aerogel as Adsorbent
王文静 1华绍广 1李波 1张玲敏2
作者信息
- 1. 中钢集团马鞍山矿山研究总院股份有限公司,安徽马鞍山 243000
- 2. 中原环保股份有限公司,河南郑州 450000
- 折叠
摘要
Abstract
Carbon aerogel(CA)was modified by alkali-sodium hydroxide and acid-hydrochloric acid to obtain O1-CA and H2-CA,respectively.The phase changes of the materials before and after modification were characterized by X-ray diffraction(XRD).The adsorption performance was analyzed by adsorption isotherm model and kinetic model to study the effects of different reaction time and initial concentrations on the adsorption process.The results showed that both modification methods changed the original amorphous structure of CA,and improved the pore structure.The removal rates of Mn(Ⅱ)in water by O1-CA and H2-CA reached more than 96％,and the removal rates reached more than 95％when initial concentration C0 ranged from 1.0 to 7.5 mg/L,which realized the efficient removal of Mn(Ⅱ)from water.The adsorption process conformed to the Langmuir model,and the maximum adsorption capacity obtained by fitting was 3.5～3.6 mg/g,indicating the occurance of monolayer adsorption.The adsorption process conformed to the pseudo-second-order kinetic model,indicating that the process was controlled by the chemical adsorption mechanism.The manganese removal process of CA conformed to the two-stage intra-particle diffusion model,while O1-CA and H2-CA were basically not affected by intra-particle diffusion.The present study can provide an alternative new adsorption material for the treatment of manganese-containing wastewater in the environment.关键词
改性碳气凝胶/Mn(Ⅱ)/吸附/水处理Key words
modified carbon aerogel/Mn(Ⅱ)/adsorbtion/water treatment分类
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王文静,华绍广,李波,张玲敏..改性碳气凝胶作吸附剂去除水中Mn(Ⅱ)[J].新疆环境保护,2025,47(2):40-48,9.
