SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 42 ›› Issue (2): 82-90.DOI: 10.1016/j.cjche.2021.12.016

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Additive manufacturing of sodalite monolith for continuous heavy metal removal from water sources

Hengyu Shen1,2, Run Zou1,3, Yangtao Zhou1, Xing Guo4, Yanan Guan1,2, Duo Na1,2, Jinsong Zhang1, Xiaolei Fan3, Yilai Jiao1   

  1. 1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
    2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;
    3. Department of Chemical Engineering, The University of Manchester, Oxford Road, Manchester M139PL, United Kingdom;
    4. Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730010, China
  • Received:2021-06-22 Revised:2021-12-21 Online:2022-03-30 Published:2022-02-28
  • Contact: Jinsong Zhang,E-mail:jshzhang@imr.ac.cn;Xiaolei Fan,E-mail:xiaolei.fan@manchester.ac.uk;Yilai Jiao,E-mail:yljiao@imr.ac.cn
  • Supported by:
    We acknowledge the Key Project on Intergovernmental International Science, Technology and Innovation (STI) Cooperation/STI Cooperation with Hong Kong, Macao and Taiwan of China’s National Key Research & Development Programme (2019YFE0123200), the National Natural Science Foundation of China (22078348). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement (No. 872102).

Additive manufacturing of sodalite monolith for continuous heavy metal removal from water sources

Hengyu Shen1,2, Run Zou1,3, Yangtao Zhou1, Xing Guo4, Yanan Guan1,2, Duo Na1,2, Jinsong Zhang1, Xiaolei Fan3, Yilai Jiao1   

  1. 1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
    2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;
    3. Department of Chemical Engineering, The University of Manchester, Oxford Road, Manchester M139PL, United Kingdom;
    4. Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730010, China
  • 通讯作者: Jinsong Zhang,E-mail:jshzhang@imr.ac.cn;Xiaolei Fan,E-mail:xiaolei.fan@manchester.ac.uk;Yilai Jiao,E-mail:yljiao@imr.ac.cn
  • 基金资助:
    We acknowledge the Key Project on Intergovernmental International Science, Technology and Innovation (STI) Cooperation/STI Cooperation with Hong Kong, Macao and Taiwan of China’s National Key Research & Development Programme (2019YFE0123200), the National Natural Science Foundation of China (22078348). This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement (No. 872102).

Abstract: Herein, we present a simple strategy for preparing monolithic sodalite adsorbents via sequential additive manufacturing and post-treatments. In detail, the method includes (i) 3D printing of cylindrical monoliths using clay as the base material; (ii) thermal activation of the 3D-printed clay monoliths by calcination (to produce reactive alumina and silica species and enable mechanical stabilization); (iii) conversion of the activated clay monoliths to hierarchical porous sodalite monoliths via hydrothermal alkaline treatment. Parametric studies on the effect of calcination temperature, alkaline concentration and hydrothermal treatment time on the property of the resulting materials (such as phase composition and morphology) at different stages of preparation was conducted. Under the optimal conditions (i.e., calcination temperature of 850℃, NaOH concentration of 3.3 mol·L-1, reaction temperature of 150℃, and reaction time of 6 h), a high-quality pure sodalite monolith was obtained, which possesses a relatively high BET surface area (58 m2·g-1) and hierarchically micro-meso-macroporous structure. In the proposed application of continuous removal of heavy metals (chromium ion as the model) from wastewater, the developed 3D-printed sodalite monolith showed excellent Cr3+ removal performance and fast kinetics (~98% removal efficiency within 25 cycles), which outperformed the packed bed using sodalite pellets (made by extrusion).

Key words: Additive manufacturing, Clay, Sodalite monolith, Heavy metal removal

摘要: Herein, we present a simple strategy for preparing monolithic sodalite adsorbents via sequential additive manufacturing and post-treatments. In detail, the method includes (i) 3D printing of cylindrical monoliths using clay as the base material; (ii) thermal activation of the 3D-printed clay monoliths by calcination (to produce reactive alumina and silica species and enable mechanical stabilization); (iii) conversion of the activated clay monoliths to hierarchical porous sodalite monoliths via hydrothermal alkaline treatment. Parametric studies on the effect of calcination temperature, alkaline concentration and hydrothermal treatment time on the property of the resulting materials (such as phase composition and morphology) at different stages of preparation was conducted. Under the optimal conditions (i.e., calcination temperature of 850℃, NaOH concentration of 3.3 mol·L-1, reaction temperature of 150℃, and reaction time of 6 h), a high-quality pure sodalite monolith was obtained, which possesses a relatively high BET surface area (58 m2·g-1) and hierarchically micro-meso-macroporous structure. In the proposed application of continuous removal of heavy metals (chromium ion as the model) from wastewater, the developed 3D-printed sodalite monolith showed excellent Cr3+ removal performance and fast kinetics (~98% removal efficiency within 25 cycles), which outperformed the packed bed using sodalite pellets (made by extrusion).

关键词: Additive manufacturing, Clay, Sodalite monolith, Heavy metal removal