化工进展 ›› 2022, Vol. 41 ›› Issue (4): 1994-1999.DOI: 10.16085/j.issn.1000-6613.2021-0727

• 材料科学与技术 • 上一篇    下一篇

马尾松基磁性水热炭的制备及其吸附性能

盖希坤1(), 马晓锋1, 骆美宇1, 杨丹1, 李音1, 邸婧1, 杨瑞芹1, 单胜道2   

  1. 1.浙江科技学院生物与化学工程学院,浙江省农产品化学与生物加工技术重点实验室,浙江 杭州 310023
    2.浙江科技学院环境与资源学院,浙江省废弃生物质循环利用与生态处理技术重点实验室,浙江 杭州 310023
  • 收稿日期:2021-04-08 修回日期:2021-05-08 出版日期:2022-04-23 发布日期:2022-04-25
  • 通讯作者: 盖希坤
  • 作者简介:盖希坤(1982—),男,博士,副教授,硕士生导师,研究方向为生物质能利用,Email:gaixikun@163.com
  • 基金资助:
    国家重点研发计划(2017YFD0601006);浙江科技学院科研成果奖培育项目(2021JLYB006)

Preparation and adsorption properties of magnetic hydrothermal carbon based on Pinus Massoniana

GAI Xikun1(), MA Xiaofeng1, LUO Meiyu1, YANG Dan1, LI Yin1, DI Jing1, YANG Ruiqin1, SHAN Shengdao2   

  1. 1.Zhejiang Provincial Key Laboratory for Chemical & Biological Processing Technology of Farm Products, School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Hangzhou 310023, Zhejiang, China
    2.Key Laboratory of Recycling and Ecotreatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, Zhejiang, China
  • Received:2021-04-08 Revised:2021-05-08 Online:2022-04-23 Published:2022-04-25
  • Contact: GAI Xikun

摘要:

磁性水热炭兼具水热炭的吸附性能和磁性材料可回收的优点,是一种具有广阔应用前景的水处理吸附材料。目前,磁性水热炭一般采用两步法制备,工艺较为复杂。为此,本文以马尾松锯末为原料,以FeSO4作为磁化剂,NaOH作为活化剂,1,2-丙二醇作为还原剂,开发一步法制备磁性水热炭技术。考察了反应温度、反应时间对磁性水热炭产率和结构的影响,采用XRD、SEM、BET、VSM等对产品进行表征,并将磁性水热炭用于去除水中Cu2+离子。结果表明:随着反应温度的升高和反应时间的增加,磁性水热炭的产率逐渐降低,但比表面积增加,磁性增强。在水热反应温度为240℃、反应时间为8h的条件下,制备的马尾松基磁性水热炭具有良好的吸附性能和磁性,磁性水热炭对Cu2+吸附量为9.58mg/g,最大饱和磁化强度3.74emu/g,具有较好的应用潜力。

关键词: 生物质, 磁性水热炭, 吸附剂, 制备, 马尾松

Abstract:

Magnetic hydrothermal carbon, which has the advantages of both adsorption property of hydrothermal carbon and recovery of magnetic material, is a kind of water treatment adsorption material with broad application prospect. At present, the preparation of magnetic hydrothermal carbon by two-step method is more complicated. Therefore, this paper used Pinus Massoniana sawdust as raw material, FeSO4 as magnetizing agent, NaOH as activating agent, and 1,2-propanediol as reducing agent, and developed one-step preparation technology of magnetic hydrothermal carbon. The effects of reaction temperature and time on the yield and structure of magnetic hydrothermal carbon were investigated. The products were characterized by XRD, SEM, BET, VSM. The results showed that with the increase of reaction temperature and reaction time, the yield of magnetic hydrothermal carbon decreases gradually, but the specific surface area and the magnetism increase. The magnetic hydrothermal carbon prepared from Masson Pine under 240℃ and reaction time of 8 hours had good adsorption performance and magnetism, the amount of Cu2+ adsorbed by magnetic hydrothermal carbon was 9.58mg/g, and the maximum saturation magnetization was 3.74emu/g, which had good application potential.

Key words: biomass, magnetic hydrothermal carbon, adsorbents, preparation, Pinus Massoniana

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