Influence of chlorine salt solution on swelling properties of sodium bentonite cushion

LI Caixia; LI Jun; XU Meng; LIU Min; LIU GuiQi

doi:10.11835/j.issn.2096-6717.2021.113

您当前的位置：

首页 >

文章列表页 >

Influence of chlorine salt solution on swelling properties of sodium bentonite cushion

Civil Engineering | 更新时间：2023-06-25

- Influence of chlorine salt solution on swelling properties of sodium bentonite cushion
- Journal of Civil and Environmental Engineering Vol. 45, Issue 1, Pages: 97-104(2023)
- 作者机构：
  
  辽宁工程技术大学矿业学院，辽宁阜新 123000
- 作者简介：
  
  LI Caixia (1974- ), professor, doctorial supervisor, main research interests: mineral processing and functional mineral materials, E-mail: cxl6708@126.com.
- 基金信息：
  
  National Natural Science Foundation of China(51404133)
- DOI：10.11835/j.issn.2096-6717.2021.113
  CLC： TU443
- Received：23 December 2020，
  
  Published：25 February 2023
- 稿件说明：
移动端阅览
LI Caixia, LI Jun, XU Meng, et al. Influence of chlorine salt solution on swelling properties of sodium bentonite cushion[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 97-104.
DOI：

LI Caixia, LI Jun, XU Meng, et al. Influence of chlorine salt solution on swelling properties of sodium bentonite cushion[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 97-104. DOI： 10.11835/j.issn.2096-6717.2021.113.

摘要

在废弃物渗透液中，复杂的化学物质能影响钠基膨润土垫层的吸水膨胀性能，研究不同价态及浓度的氯盐溶液对膨润土膨胀指数的影响，探究pH值及温度对膨润土膨胀性能的影响，利用X射线衍射仪及扫描电子显微镜对氯盐溶液处理后的膨润土进行表征分析。试验结果表明，高价态高浓度的氯盐溶液对膨润土的膨胀性能起抑制作用，膨胀指数最低为5 mL/2 g；单价态低浓度的NaCl溶液对膨润土的膨胀性能起促进作用，膨胀指数最高达到56 mL/2 g。XRD测试表明，氯盐溶液处理后的膨润土层间距由12.512 Å下降到11.856 Å；SEM测试分析发现，高价态氯盐溶液中的膨润土形貌由规则鳞片状转化为无规则絮凝状。在氯盐溶液浓度为0.04 mol/L、pH值为9及温度为90 ℃的条件下，膨胀指数提升近50%。在0.01 mol/L NaCl溶液、0.02 mol/L NaCl溶液和0.01 mol/L CaCl

溶液中，膨润土吸水膨胀过程中凝胶态部分符合Fickian扩散模型，表明溶液水分子扩散速率小于膨润土凝胶态部分松弛速率。其他浓度氯盐溶液中，膨润土吸水膨胀过程中凝胶态部分符合non-Fickian溶胀过程，溶液水分子扩散速率与膨润土凝胶态部分松弛速率大致相同。

Abstract

Since the complex chemical substances in the waste permeate can affect the water-absorbing swelling performance of the sodium bentonite cushion

this paper studies the influence of different valences and concentrations of chlorine salt solutions on the swelling index of bentonite. At the same time

the influence of pH value and temperature on the swelling performance of bentonite was explored

and the bentonite treated with chlorine salt solution was characterized and analyzed by X-ray diffractometer and scanning electron microscope. The test results show that the high-valence and high-concentration chlorine salt solution inhibits the swelling performance of bentonite

and the swelling index is at least 5 mL/2 g. The monovalent low-concentration NaCl solution improves the swelling performance of bentonite

and the swelling index reaches a maximum of 56 mL/2 g. XRD test shows that the bentonite layer spacing after chlorine salt solution treatment decreases from 12.512 Å to 11.856 Å. SEM test analysis find that the morphology of bentonite in the high-valence chlorine salt solution changes from regular scaly to irregular flocculation. In 0.01 mol/L NaCl solution

0.02 mol/L NaCl solution and 0.01 mol/L CaCl

solution

the gel state part of the bentonite in the process of absorbing water and swelling conforms to the Fickian diffusion model

it shows that the diffusion rate of water molecules in the solution is less than the relaxation rate of the gel state of bentonite. The gel part of bentonite in the swelling process of water absorption and swelling in chloride salt solutions of other concentrations conforms to the non-Fickian swelling process

and the diffusion rate of water molecules in the solution is approximately the same as the relaxation rate of the gel part of bentonite.

关键词

Keywords

references

徐永福 . . 高放废物地质处置库中膨润土的侵蚀机理和模型研究综述 [J]. . 地球科学进展 , , 2017 , , 32 (( 10 ): ): 1050 -- 1061 ..

Y F XU . . Mechanisms and models for bentonite erosion used for geologic disposal of high level radioactive waste: A review [J]. . Advances in Earth Science , , 2017 , , 32 (( 10 ): ): 1050 -- 1061 . . (in Chinese) .

J C CHAI , , N PRONGMANEE . . Barrier properties of a geosynthetic clay liner using polymerized sodium bentonite [J]. . Geotextiles and Geomembranes , , 2020 , , 48 (( 3 ): ): 392 -- 399 ..

于海浩 , , 孙德安 , , 韦昌富 , , 等 . . 氯化钠溶液饱和不同初始含水率膨润土的膨胀特性 [J]. . 岩土工程学报 , , 2019 , , 41 (( 3 ): ): 595 -- 600 ..

H H YU , , D A SUN , , C F WEI , , et al . . Swelling characteristics of bentonite with different initial water contents saturated by NaCl solution [J]. . Chinese Journal of Geotechnical Engineering , , 2019 , , 41 (( 3 ): ): 595 -- 600 . . (in Chinese) .

高子瑞 , , 陈涛 , , 徐永福 . . 盐溶液对膨润土膨胀性的影响 [J]. . 岩土力学 , , 2018 , , 39 (( 1 ): ): 249 -- 253 ..

Z R GAO , , T CHEN , , Y F XU . . Effect of salt solution on swelling characteristics of bentonite [J]. . Rock and Soil Mechanics , , 2018 , , 39 (( 1 ): ): 249 -- 253 . . (in Chinese) .

姜浩 , , 廖立兵 , , 郑红 , , 等 . . 片沸石、钙基膨润土去除垃圾渗滤液中有害物质的实验研究 [J]. . 矿物岩石 , , 2007 , , 27 (( 3 ): ): 116 -- 120 ..

H JIANG , , L B LIAO , , H ZHENG , , et al . . Experimental research on removal of cod and ammonia-nitrogen from landfill leachate by heulandite and Ca-bentonite [J]. . Journal of Mineralogy and Petrology , , 2007 , , 27 (( 3 ): ): 116 -- 120 . . (in Chinese) .

A NAKA , , G FLORES , , T INUI , , et al . . Hydraulic performance and chemical compatibility of a powdered Na-bentonite geosynthetic clay liner permeated with mine drainage [J]. . Soils and Foundations , , 2019 , , 59 (( 5 ): ): 1128 -- 1147 ..

B AKINWUNMI , , J T HIRVI , , S KASA , , et al . . Swelling pressure of Na- and Ca-montmorillonites in saline environments: A molecular dynamics study [J]. . Chemical Physics , , 2020 , , 528 : 110511 ..

Y G CHEN , , X X DONG , , X D ZHANG , , et al . . Combined thermal and saline effects on the swelling pressure of densely compacted GMZ bentonite [J]. . Applied Clay Science , , 2018 , , 166 : 318 -- 326 ..

项国圣 , , 方圆 , , 徐永福 . . 阳离子交换对高庙子钠基膨润土膨胀性能的影响 [J]. . 浙江大学学报(工学版) , , 2017 , , 51 (( 5 ): ): 931 -- 936 ..

G S XIANG , , Y FANG , , Y F XU . . Swelling characteristics of GMZ01 bentonite affected by cation exchange reaction [J]. . Journal of Zhejiang University (Engineering Science) , , 2017 , , 51 (( 5 ): ): 931 -- 936 . . (in Chinese) .

陈宝 , , 张会新 , , 陈萍 . . 高碱性溶液对高庙子膨润土溶蚀作用的研究 [J]. . 岩石力学与工程学报 , , 2012 , , 31 (( 7 ): ): 1478 -- 1483 ..

B CHEN , , H X ZHANG , , P CHEN . . Geochemical interactions between compacted Gaomiaozi bentonite and hyper-alkaline solution [J]. . Chinese Journal of Rock Mechanics and Engineering , , 2012 , , 31 (( 7 ): ): 1478 -- 1483 . . (in Chinese) .

何俊 , , 王小琦 , , 颜兴 , , 等 . . 溶液和温度作用下膨润土防水毯的渗透性能 [J]. . 吉林大学学报(地球科学版) , , 2019 , , 49 (( 3 ): ): 807 -- 816 ..

J HE , , X Q WANG , , X YAN , , et al . . Combined effects of solution and temperature on hydraulic conductivity of geosynthetic clay liners [J]. . Journal of Jilin University (Earth Science Edition) , , 2019 , , 49 (( 3 ): ): 807 -- 816 . . (in Chinese) .

Standard test method for swell index of clay mineral component of geosynthetic clay liners : ASTM.D5890 [S]. . Philadelphia : : ASTM , , 2002 ..

徐永福 . . 膨胀土的水力作用机理及膨胀变形理论 [J]. . 岩土工程学报 , , 2020 , , 42 (( 11 ): ): 1979 -- 1987 ..

Y F XU . . Hydraulic mechanism and swelling deformation theory of expansive soils [J]. . Chinese Journal of Geotechnical Engineering , , 2020 , , 42 (( 11 ): ): 1979 -- 1987 . . (in Chinese) .

于泽溪 . . 盐溶液对钠质膨润土工程特性的影响研究 [D]. . 杭州 : : 浙江大学 , , 2019 ..

Z X YU . . Study on the influence of salt solution on the engineering properties of sodium bentonite [D]. . Hangzhou : : Zhejiang University , , 2019 . . (in Chinese) .

涂志斌 , , 时伟 , , 杨忠年 , , 等 . . 盐溶液对Na-膨润土膨胀率影响的试验研究 [J]. . 西安建筑科技大学学报(自然科学版) , , 2020 , , 52 (( 1 ): ): 98 -- 106 ..

Z B TU , , W SHI , , Z N YANG , , et al . . Study on the effect of salt solution on expansion rate of Na-bentonite [J]. . Journal of Xi'an University of Architecture & Technology (Natural Science Edition) , , 2020 , , 52 (( 1 ): ): 98 -- 106 . . (in Chinese) .

董华绘 , , 齐瑞石 , , 王晓焕 , , 等 . . 酸改性对膨润土结构及重金属吸附性能的影响 [J]. . 非金属矿 , , 2019 , , 42 (( 2 ): ): 97 -- 99 ..

H H DONG , , R S QI , , X H WANG , , et al . . Effect of acid modification on structure and heavy metal adsorption properties of bentonite [J]. . Non-Metallic Mines , , 2019 , , 42 (( 2 ): ): 97 -- 99 . . (in Chinese) .

J R CUI , , Z P ZHANG , , F HAN . . Effects of pH on the gel properties of montmorillonite, palygorskite and montmorillonite-palygorskite composite clay [J]. . Applied Clay Science , , 2020 , , 190 : 105543 ..

项国圣 , , 吕立勇 , , 葛磊 , , 等 . . 温度对GMZ膨润土的膨胀性能影响研究 [J]. . 岩土工程学报 , , 2021 , , 43 (( 1 ): ): 77 -- 84 ..

G S XIANG , , L Y LV , , L GE , , et al . . Effects of temperature on swelling characteristics of GMZ bentonite [J]. . Chinese Journal of Geotechnical Engineering , , 2021 , , 43 (( 1 ): ): 77 -- 84 . . (in Chinese) .

T KATSUMI , , H ISHIMORI , , M ONIKATA , , et al . . Long-term barrier performance of modified bentonite materials against sodium and calcium permeant solutions [J]. . Geotextiles and Geomembranes , , 2008 , , 26 (( 1 ): ): 14 -- 30 ..

W M YE , , Y HE , , Y G CHEN , , et al . . Thermochemical effects on the smectite alteration of GMZ bentonite for deep geological repository [J]. . Environmental Earth Sciences , , 2016 , , 75 (( 10 ): ): 1 -- 11 ..

何俊 , , 施建勇 . . 膨润土中饱和渗透系数的计算 [J]. . 岩石力学与工程学报 , , 2007 , , 26 (( Sup2 ): ): 3920 -- 3925 ..

J HE , , J Y SHI . . Calculation of saturated permeability coefficient of bentonite [J]. . Chinese Journal of Rock Mechanics and Engineering , , 2007 , , 26 (( Sup2 ): ): 3920 -- 3925 . . (in Chinese) .

周益名 , , 付时雨 , , 杨韶平 , , 等 . . 纤维素基水凝胶的溶胀动力学研究 [J]. . 中国造纸学报 , , 2012 , , 27 (( 2 ): ): 40 -- 44 ..

Y M ZHOU , , S Y FU , , S P YANG , , et al . . Study on the swelling kinetics of pH-sensitive cellulose-based hydrogels [J]. . Transactions of China Pulp and Paper , , 2012 , , 27 (( 2 ): ): 40 -- 44 . . (in Chinese) .

季桂娟 , , 张培萍 , , 姜桂兰 . . 膨润土加工与应用 [M]. , 2版 . 北京 : : 化学工业出版社 , , 2013 ..

G J JI , , P P ZHANG , , G L JIANG . . Processing and application of bentonite [M]. , 2nd edition . Beijing : : Chemical Industry Press , , 2013 . . (in Chinese) .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

AI问答

Address：Journals Department, Chongqing University, 174 Shazhengjie, Chongqing 400044, P.R.China Postal code：400044
Tel：+86-23-65111322 Email：xuebao@cqu.edu.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰