马尾松基磁性水热炭的制备及其吸附性能

doi:10.16085/j.issn.1000-6613.2021-0727

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

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.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.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/Abstract

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

中图分类号:

盖希坤, 马晓锋, 骆美宇, 杨丹, 李音, 邸婧, 杨瑞芹, 单胜道. 马尾松基磁性水热炭的制备及其吸附性能[J]. 化工进展, 2022, 41(4): 1994-1999.

GAI Xikun, MA Xiaofeng, LUO Meiyu, YANG Dan, LI Yin, DI Jing, YANG Ruiqin, SHAN Shengdao. Preparation and adsorption properties of magnetic hydrothermal carbon based on Pinus Massoniana[J]. Chemical Industry and Engineering Progress, 2022, 41(4): 1994-1999.

图/表 9

参考文献 17

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温度/℃	时间/h	产率/%	温度/℃	时间/h	产率/%
180	2	79.93	220	2	65.06
180	4	68.61	220	4	54.86
180	6	67.37	220	6	53.40
180	8	66.68	220	8	53.01
180	10	66.16	220	10	52.76
200	2	74.50	240	2	57.48
200	4	67.86	240	4	43.96
200	6	66.69	240	6	43.83
200	8	66.47	240	8	40.68
200	10	65.31	240	10	40.43

温度/℃	时间/h	产率/%	温度/℃	时间/h	产率/%
180	2	79.93	220	2	65.06
180	4	68.61	220	4	54.86
180	6	67.37	220	6	53.40
180	8	66.68	220	8	53.01
180	10	66.16	220	10	52.76
200	2	74.50	240	2	57.48
200	4	67.86	240	4	43.96
200	6	66.69	240	6	43.83
200	8	66.47	240	8	40.68
200	10	65.31	240	10	40.43

制备条件	比表面积/m²·g^-1	孔容/cm³·g^-1	孔径/nm
180℃-8h	5.09	0.01	3.42
200℃-8h	46.13	0.06	3.02
220℃-8h	53.29	0.22	10.08
240℃-8h	63.75	0.35	6.32

制备条件	比表面积/m²·g^-1	孔容/cm³·g^-1	孔径/nm
180℃-8h	5.09	0.01	3.42
200℃-8h	46.13	0.06	3.02
220℃-8h	53.29	0.22	10.08
240℃-8h	63.75	0.35	6.32

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马尾松基磁性水热炭的制备及其吸附性能

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

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