原位合成LDHs@地聚物复合材料的矿物组成及除磷效果

doi:10.11896/cldb.22110080

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Abstract Two kinds of fly ash-slag geopolymer composites (LDHs@geopolymer) rich in layered double hydroxides (LDHs) were synthesized in-situ using high-alumina fly ash and granulated blast furnace slag as precursors,sodium hydroxide-sodium carbonate and calcium hydroxide-cal-cium sulfate dihydrate as mixed activators.The main mineral composition of LDHs@geopolymer was analyzed by XRD and SEM-EDS.The phosphorus removal effect of LDHs@geopolymer composites was investigated by static adsorption test.The results show that CO₃^2--LDHs@geopolymer composites are synthesized in-situ with sodium hydroxide-sodium carbonate as activator and active magnesium oxide as regulating material.SO₄^2--LDHs@geopolymer composites are synthesized in situ using calcium hydroxide-calcium sulfate dihydrate as activator.Under the adsorption conditions of initial H₂PO₄^- concentration of 100 mg·L^-1 and solid-liquid ratio of 1∶100,the adsorption capacity and removal rate of H₂PO₄^- of CO₃^2--LDHs@geopolymer composites prepared by doping 8wt% active MgO after heat treatment are 9.51 mg·g^-1 and 95.1%,respectively.The adsorption capacity and removal rate of H₂PO₄^- of SO₄^2--LDHs@geopolymer composites prepared with mass ratio of 1∶1 calcium hydroxide-calcium sulfate dihydrate as activator are 9.99 mg·g^-1 and 99.9%,respectively.Under the same conditions,SO₄^2--LDHs@geopolymer composites have better phosphorus removal effect than CO₃^2--LDHs@geopolymer composites.

Key words： geopolymer active magnesium oxide layered double hydroxides hydrotalcite phosphorus adsorption

Published: 25 April 2024 Online: 2024-04-28

CLC number:

TB321

Fund:Scientific Research Project of Shaanxi Province (2018SF-367).

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	SONG Xuefeng
	WANG Nan

Cite this article:

SONG Xuefeng,WANG Nan. Mineral Composition and Phosphorus Removal Effect of In-situ Synthesized LDHs@Geopolymer Composites[J]. Materials Reports, 2024, 38(8): 22110080-6.

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https://www.mater-rep.com/EN/10.11896/cldb.22110080 OR https://www.mater-rep.com/EN/Y2024/V38/I8/22110080

1 Ministry of Ecological Environment of China. Letter on the completion of the water environment target task in the first half of 2020. China Environment News, 2020, 000014672(in Chinese).
中国生态环境部. 关于2020年上半年水环境目标任务完成情况的函. 中国环境报, 2020, 000014672.
2 Xu C L, Zhang J W, Zhang Y J. Modern Chemical Industry, 2019(S1), 15(in Chinese).
徐成龙, 张家威, 张饮江. 现代化工, 2019(S1), 15.
3 He Y H. Study on the functional regulation and mechanism of simulta-neous removal of nitrogen and phosphorus by natural zeolite. Ph. D. Thesis, University of Science and Technology, China, 2018(in Chinese).
贺银海. 沸石同步脱氮除磷功能调控及机理研究. 博士学位论文, 北京科技大学, 2018.
4 Tian Y. Research on adaptability technology of typical urban and rural sewage treatment. Master’s Thesis, Xi’an University of Architecture and Technology, China, 2021(in Chinese).
田园. 典型城市农村污水处理适应性技术研究. 硕士学位论文, 西安建筑科技大学, 2021.
5 Guan R. LCA-LCC integrted analysis of rural sewage treatment model. Master’s Thesis, Shanghai Jiao Tong University, China, 2020(in Chinese).
关睿. 农村污水处理模式的LCA-LCC集成分析. 硕士学位论文, 上海交通大学, 2020.
6 Shi C J, Fernandez J A, Palomo A, et al. Cement and Concrete Research, 2011, 41, 750.
7 Davidovits J. Journal of Thermal Analysis and Calorimetry, 1989, 35(2), 429.
8 Provis J L, Lukey G C, Van Deventer J S J. Chemistry of Materials, 2005, 17, 3075.
9 Sturm P, Gluth G J G, Simon S, et al. Thermochimica Acta, 2016, 635, 41.
10 Cui X M, Tang Q, Li C M, et al. Rare Metal Materials and Engineering, 2015, 44(11), 600(in Chinese).
崔学民, 唐青, 李纯民, 等. 稀有金属材料与工程, 2015, 44(11), 600.
11 Rozek P, Krol M, Mozgwa W. Journal of Cleaner Production, 2019, 230, 557.
12 Liu Y. Preparation of open cell geopolymer and hierarchically structured zeolite and the comparative study on their Pb²⁺,Cu²⁺ adsorption behavior. Ph. D. Thesis, China University of Geosciences, China, 2018(in Chinese).
刘意. 开孔地质聚合物与多级孔分子筛的制备及吸附Pb²⁺、Cu²⁺的研究. 博士学位论文, 中国地质大学, 2018.
13 Han L, Wang J X, Liu Z, et al. Journal of Hazardous Materials, 2020, 393, 122468.
14 Ding H. Preparation of self-supporting fly ash-based porous adsorption material and its denitrification and dephosphorization effect. Master’s Thesis, Xi’an University of Architecture and Technology, China, 2021(in Chinese).
丁浩. 自支撑粉煤灰基多孔吸附材料的制备及其脱氮除磷研究. 硕士学位论文, 西安建筑科技大学, 2021.
15 Marrium A D, Muhammad A H, Farwa N, et al. Journal of Environmental Chemical Engineering, 2020, 8, 104073.
16 Zhang G T. Efficient preparation of chloride ion intercalation LDHs for the nitrate removal from water. Master’s Thesis, Hebei Univercity, China, 2021(in Chinese).
张冠腾. 氯离子插层LDHs的高效制备及对水中硝酸盐的去除. 硕士学位论文, 河北大学, 2021.
17 Deng L. Study on removal of chromium(Ⅵ) and phosphate from aqueous solution using Mg-Al hydrotalcite-based composites. Ph. D. Thesis, Hunan Univercity, China, 2015(in Chinese).
邓林. 镁铝水滑石基复合材料吸附去除水中铬(Ⅵ)、磷酸盐的研究. 博士学位论文, 湖南大学, 2015.
18 Elettra P, Annalisa N M, Angelo V, et al. Applied Clay Science, 2021, 215, 106326.
19 He J, Zheng W H, Bai W, et al. Construction and Building Materials, 2021, 271, 121608.
20 Standards Division of State Environmental Protection Administration. Water quality-Determination of total phosphorus-Ammonium molybdate spectrophotometric method GB 11893-89, China Standards Press, China, 1989(in Chinese).
国家环境保护局标准处. 水质总磷的测定-钼酸铵分光光度法 GB 11893-89, 中国标准出版社, 1989.
21 Ke G J, Zhang L, Yang P F, et al. Fine Chemicals, 2017, 34(10), 1107(in Chinese).
柯国军, 张琳, 阳鹏飞, 等. 精细化工, 2017, 34(10), 1107.
22 Feng C F, Liu Y, Liu Y, et al. Journal of Functional Materials, 2022, 53(3), 3084(in Chinese).
封春甫, 刘云, 刘洋, 等. 功能材料, 2022, 53(3), 3084.
23 Sun Y. Research on ion adsorption properties of hydrotalcite with different morphologies and its calcined products. Master’s Thesis, Harbin Institute of Technology, China, 2019(in Chinese).
孙远. 不同形貌水滑石及其焙烧产物的离子吸附性能研究. 硕士学位论文, 哈尔滨工业大学, 2019.
24 Chen Y H. The immobilization and stability of heavy metal ions by ettringite. Master’s Thesis, Chongqing Univercity, China, 2017(in Chinese).
陈彦合. 钙矾石对重金属离子的吸附固化及稳定性研究. 硕士学位论文, 重庆大学, 2017.
25 Ni Z M, Pan G X, Wang L G, et al. Chinese Journal of Chemical Phy-sics, 2006, 19, 277.
26 Falzone G, Balonis M, Sant G. Cement and Concrete Research, 2015, 72, 54.