无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2019, Vol. 51 ›› Issue (9): 61-66.doi: 10.11962/1006-4990.2019-0239

• 环境·健康·安全 • 上一篇    下一篇

电解锰渣基沸石对锰离子的吸附性能研究

常军1,贾福康1,胡成山1,叶乾旭2   

  1. 1. 铜仁学院材料与化学工程学院,贵州铜仁 554300
    2. 昆明理工大学材料科学与工程学院
  • 收稿日期:2019-05-28 出版日期:2019-09-10 发布日期:2020-06-10
  • 作者简介:常军(1985— ),男,博士,副教授,从事湿法冶金及重金属废水处理研究;E-mail: junchang85@163.com。
  • 基金资助:
    国家级大学生创新创业训练计划项目(电解锰渣制备沸石及其对重金属吸附性能的研究)(201710665010);贵州省教育厅科技拔尖人才支持计划项目(多场耦合作用下电解锰渣中锰组分的迁移机制研究)(KY[2017]090);贵州省科技计划项目-联合基金项目(微波强化协同浸出电解锰渣的机理研究)(LH[2017]7312)

Adsorption of manganese ion by zeolite synthesized from electrolytic manganese residue

Chang Jun1,Jia Fukang1,Hu Chengshan1,Ye Qianxu2   

  1. 1. School of Materials and Chemical Engineering,Tongren University,Tongren 554300,China
    2. Faculty of Material Science and Engineering,Kunming University of Science and Technology
  • Received:2019-05-28 Published:2019-09-10 Online:2020-06-10

摘要:

电解锰渣是电解锰行业露天堆存的大宗固体废弃物,在堆存过程中将产生毒性污染物锰离子。为有效利用电解锰渣的同时消除锰离子对环境的危害,以电解锰渣为原料采用微波碱熔活化法制备沸石,并用于吸附锰离子。考察了溶液初始锰离子质量浓度、溶液pH、吸附温度和吸附时间等因素对锰离子吸附效果的影响。结果表明:在溶液初始锰离子质量浓度为500 mg/L、溶液pH为6、吸附时间为2 h、吸附温度为50 ℃条件下,电解锰渣基沸石对锰离子具有较好的吸附能力,最大吸附量高达79.18 mg/g。探究了电解锰渣基沸石对锰离子的吸附行为。结果表明,锰离子在沸石表面的吸附符合准二级动力学模型,Langmuir等温吸附模型比Freundlich模型更适合于描述电解锰渣基沸石去除锰离子的等温吸附过程。电解锰渣基沸石循环使用性能良好,在重金属废水处理方面具有潜在的应用前景。

关键词: 电解锰渣, 沸石, 锰离子, 吸附

Abstract:

Electrolytic manganese residue(EMR) is a large amount of solid waste deposited in the open air,during the stockpiling process,toxic pollutant Mn2+ will be released. In order to effectively utilize EMR and eliminate the environmental hazards of Mn2+,zeolite was prepared by microwave heating and alkali fusion method using electrolytic manganese residue as raw material,and it was used to adsorb Mn2+.Then,the factors of initial Mn2+ concentration,solution pH,adsorption temperature and adsorption time on the adsorption effects of Mn2+ were discussed.The results showed that synthetic zeolite had a better performance for Mn2+ removal and the maximum adsorption quantity for Mn2+ was 79.18 mg/g under the conditons such as initial Mn2+ concentration of 500 mg/L,solution pH of 6,adsorption time of 2 h and adsorption temperature of 50 ℃.The adsorption behavior of zeolite from electrolytic manganese residue on manganese ions was investigated.Results showed,the adsorption of Mn2+ on the surface of zeolite fitted well to the pseudo second-order equation,the Langmuir equation model was found to be more suitable to explicate the experimental equilibrium isotherm results than Freundlich equation model.This study revealed that EMR-based zeolite had a good recycling performance and potential application prospect in heavy metal wastewater treatment.

Key words: electrolytic manganese residue, zeolite, manganese ion, adsorption

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