Consolidation and Compressibility Behavior of Compacted Nanoclay-Amended Bentonite Liners Inundated with Inorganic Salt Solutions
Publication: Journal of Hazardous, Toxic, and Radioactive Waste
Volume 27, Issue 4
Abstract
The hazardous waste leachates from landfills and tailing disposal facilities pose a severe threat to environmental ecosystems if they infiltrate through the barrier component. Bentonite and its amendments are frequently employed as hydraulic barriers because of their low cost, environmentally sustainable nature, and peculiar impermeable properties. Even so, the interaction of the bentonite barrier with inorganic and organic chemicals significantly deteriorates the long-term performance of bentonite. Hydrophobic nanoclays are proven to have better chemical compatibility and performance, especially in organic solutions. Therefore, this study employed a mixture of bentonite and hydrophobic nanoclay (referred to as BNC) to understand its feasibility for containment applications under aggressive electrolytic conditions. BNC liners were employed to immobilize and adsorb organic and inorganic pollutants without compromising the hydraulic performance. For this experimental program, inorganic salt solutions of NaCl and CaCl2 were chosen at concentrations of 0, 0.1, and 1 N. The effect of various permeants on the compressibility and consolidation characteristics of compacted BNC liners was investigated by performing a series of oedometer tests. From the test results, it was observed that the time for 90% consolidation (t90), compression index (Cc), and coefficient of volume change (mv) of BNC decreased, but the coefficient of consolidation (cv) and yield stress (Po) increased with an increase in electrolyte concentration and valency. The Cc of BNC declined by 23.9% and 25.5%, respectively, when the permeant solution was changed from deionized (water to 1 N NaCl and CaCl2, whereas bentonite showed a significant drop of 37.4% and 39.5% for the same solutions. However, the effect of inorganic salts on these parameters was significantly less in BNC liners than in bentonite liners. In the light of these findings, this study recommends the use of nanoclay-amended bentonite liners for containment applications at high electrolytic conditions.
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Acknowledgments
The authors would like to thank Central Instruments Facility, IIT Guwahati, for providing the SEM images and Mr. Arun Sathyan for rendering help while performing the FTIR experiments. The assistance provided by Mr. Rohit Kumar and Mr. Rohit Rathore while performing the geotechnical experiments is also acknowledged.
References
Alawaji, H. A. 1999. “Swell and compressibility characteristics of sand–bentonite mixtures inundated with liquids.” Appl. Clay Sci. 15 (3–4): 411–430. https://doi.org/10.1016/S0169-1317(99)00033-2.
Argane, R., M. Benzaazoua, R. Hakkou, and A. Bouamrane. 2015. “Reuse of base-metal tailings as aggregates for rendering mortars: Assessment of immobilization performances and environmental behavior.” Constr. Build. Mater. 96: 296–306. https://doi.org/10.1016/j.conbuildmat.2015.08.029.
ASTM. 2011a. Standard test methods for one-dimensional consolidation properties of soils using incremental loading. ASTM D2435. West Conshohocken, PA: ASTM.
ASTM. 2011b. Standard test method for swell index of clay mineral component of geosynthetic clay liners. ASTM D5890. West Conshohocken, PA: ASTM.
ASTM. 2014. Standard test methods for specific gravity of soil solids by water pycnometer. ASTM D854. West Conshohocken, PA: ASTM.
ASTM. 2017. Standard test methods for liquid limit, plastic limit, and plasticity index of soil. ASTM D4318. West Conshohocken, PA: ASTM.
Babu, N. M., and A. K. Mishra. 2022. “Effect of salt permeants on the consolidation and hydraulic behaviour of fibre treated black cotton soil for landfill application.” J. Cleaner Prod. 369: 133339. https://doi.org/10.1016/j.jclepro.2022.133339.
Bachurin, B. 2019. “Organic matter of mine water and mining waste.” In Proc., of Int. Mine Water Association Conf. Technological and Ecological Challenge, 639–644. Perm, Russia: IMWA.
Banchhor, A., M. Pandey, and P. K. Pandey. 2020. “Hexavalent chromium contamination of groundwater in Bhilai City: Potential public health crisis in Central-East India.” Eco. Env. Cons. 26 (Supplementary Issue): S86–S95.
Bohnhoff, G. L., and C. D. Shackelford. 2010. “Global geoenvironmental engineering challenges.” In Proc., 1st US–India Workshop on Global Geoenvironmental Engineering Challenges. Fort Collins, CO: Colarado State University.
Casagrande, A. 1936. “The determination of the preconsolidation load and its significance.” In Vol. 3 of Proc., 1st Int. Soil Mechanics and Foundation Engineering Conf., 60–64. Harvard, MA: Graduate School of Engineering.
Ceniceros-Gómez, A. E., K. Y. Macías-Macías, E. J. de la Cruz-Moreno, M. E. Gutiérrez-Ruiz, and L. G. Martínez-Jardines. 2018. “Characterization of mining tailings in México for the possible recovery of strategic elements.” J. South Am. Earth Sci. 88: 72–79. https://doi.org/10.1016/j.jsames.2018.08.013.
Dutta, J., and A. K. Mishra. 2016. “Consolidation behaviour of bentonites in the presence of salt solutions.” Appl. Clay Sci. 120: 61–69. https://doi.org/10.1016/j.clay.2015.12.001.
Dutta, J., and A. K. Mishra. 2017. “Consolidation behavior of compacted bentonites in the presence of heavy metals.” J. Hazard. Toxic Radioact. Waste 21 (3): 04017003. https://doi.org/10.1061/(ASCE)HZ.2153-5515.0000356.
Fang, A., Y. Yang, Z. Yang, S. Hua, J. Wang, and F. Zhou. 2022. “Consolidation properties of soil/modified bentonite backfill in salt solution.” Water 14 (12): 1967. https://doi.org/10.3390/w14121967.
Ghavami, M. 2017. “Cationic surfactant modification and its impact on the engineering behaviours of montmorillonite.” Ph.D. thesis, Dept. of Civil and Environmental Engineering, Univ. of Louisville.
Hong, S.-I., and J.-W. Rhim. 2008. “Antimicrobial activity of organically modified nano-clays.” J. Nanosci. Nanotechnol. 8 (11): 5818–5824. https://doi.org/10.1166/jnn.2008.248.
Jadda, K., and R. Bag. 2020. “Variation of swelling pressure, consolidation characteristics and hydraulic conductivity of two Indian bentonites due to electrolyte concentration.” Eng. Geol. 272: 105637. https://doi.org/10.1016/j.enggeo.2020.105637.
Javadi, S., M. Ghavami, Q. Zhao, and B. Bate. 2017. “Advection and retardation of non-polar contaminants in compacted clay barrier material with organoclay amendment.” Appl. Clay Sci. 142: 30–39. https://doi.org/10.1016/j.clay.2016.10.041.
Khenifi, A., Z. Bouberka, F. Sekrane, M. Kameche, and Z. Derriche. 2007. “Adsorption study of an industrial dye by an organic clay.” Adsorption 13 (2): 149–158. https://doi.org/10.1007/s10450-007-9016-6.
Kossoff, D., W. E. Dubbin, M. Alfredsson, S. J. Edwards, M. G. Macklin, and K. A. Hudson-Edwards. 2014. “Mine tailings dams: Characteristics, failure, environmental impacts, and remediation.” Appl. Geochem. 51: 229–245. https://doi.org/10.1016/j.apgeochem.2014.09.010.
Lagaly, G. 1986. “Interaction of alkylamines with different types of layered compounds.” Solid State Ionics 22 (1): 43–51. https://doi.org/10.1016/0167-2738(86)90057-3.
Martín-Crespo, T., D. Gómez-Ortiz, and S. Martín-Velázquez. 2019. “Geoenvironmental characterization of sulfide mine tailings.” In Proc., Applied Geochemistry with Case Studies on Geological Formations, Exploration Techniques and Environmental Issues. IntechOpen. https://doi.org/10.1016/0167-2738(86)90057-3.
Mishra, A. K., J. Dutta, and R. Chingtham. 2015. “A study on the behavior of the compacted bentonite in the presence of salt solutions.” Int. J. Geotech. Eng. 9 (4): 354–362. https://doi.org/10.1179/1939787914Y.0000000074.
Mitchell, J. K., and K. Soga. 2005. Fundamentals of soil behavior. 3rd ed. New York: Wiley.
Mohajeri, P., C. M. S. Smith, H. W. Chau, N. Lehto, A. Azimi, and H. Farraji. 2019. “Adsorption behavior of Na–bentonite and nano cloisite Na+ in interaction with Pb (NO3)2 and Cu (NO3)2· 3H2O contamination in landfill liners: Optimization by response surface methodology.” J. Environ. Chem. Eng. 7 (6): 103449. https://doi.org/10.1016/j.jece.2019.103449.
Prongmanee, N., J. C. Chai, and S. Shrestha. 2018. “Effect of cations on consolidation and permeability of polymerized bentonite.” Lowland Technol. Int. 20: 297–304.
Ray, S., A. K. Mishra, and A. Kalamdhad. 2019. “Influence of various concentration of lead on consolidation parameters of bentonite.” Int. J. Geotech. Eng. 16: 158–164. https://doi.org/10.1080/19386362.2019.1618029.
Ribeiro, J., and D. Flores. 2021. “Occurrence, leaching, and mobility of major and trace elements in a coal mining waste dump: The case of douro coalfield, Portugal.” Energy Geosci. 2 (2): 121–128. https://doi.org/10.1016/j.engeos.2020.09.005.
Roca, Y. B., and W. S. Fuentes. 2019. “Use of nanoclay as an adsorbent to remove Cu (II) from acid mine drainage (AMD).” Chem. Eng. Trans. 73: 241–246.
Shah, M. V., H. J. Pandya, and A. D. Shukla. 2017. “Influence of chemical additives on shrinkage and swelling characteristics of bentonite clay.” Procedia Eng. 189: 932–937. https://doi.org/10.1016/j.proeng.2017.05.144.
Shahidi, M., F. Asemi, and F. Farrokhi. 2023. “Improving the mechanical behavior of soil contaminated with Gas–Oil using organoclay and nanoclay.” Arabian J. Sci. Eng. 48: 4953–4969. https://doi.org/10.1007/s13369-022-07239-w.
Skempton, A. W., and O. T. Jones. 1944. “Notes on the compressibility of clays.” Q. J. Geol. Soc. 100 (1–4): 119–135. https://doi.org/10.1144/GSL.JGS.1944.100.01-04.08.
Sonawane, S., P. Chaudhari, S. Ghodke, S. Phadtare, and S. Meshram. 2009b. “Ultrasound assisted adsorption of basic dye onto organically modified bentonite (nanoclay).” J. Sci. Ind. Res. 68: 162–167.
Soni, A., P. K. Das, and P. Kumar. 2022. “A review on the municipal solid waste management status, challenges and potential for the future Indian cities.” Environ. Dev. Sustain. 1–49. https://doi.org/10.1007/s10668-022-02688-7.
Sreedharan, V. 2013. “Characterization and assessment of organically modified clays for geo environmental applications.” Ph.D. thesis, Dept. of Civil Engineering, Indian Institute of Science.
Sridharan, A., and G. V. Rao. 1973. “Mechanisms controlling volume change of saturated clays and the role of the effective stress concept.” Géotechnique 23 (3): 359–382. https://doi.org/10.1680/geot.1973.23.3.359.
Sridharan, A., and P. V. Sivapullaiah. 2005. “Mini compaction test apparatus for fine grained soils.” Geotech. Test. J. 28 (3): 240–246.
Taylor, D. W. 1942. Fundamentals of soil mechanics. New York: Wiley.
Terzaghi, K., and R. B. Peck. 1948. Soil mechanics in engineering practice. New York: Wiley.
Thanh Duong, N., and D. Van Hao. 2020. “Consolidation characteristics of artificially structured kaolin–bentonite mixtures with different pore fluids.” Adv. Civ. Eng. 2020: 8856404. https://doi.org/10.1155/2020/8856404.
USEPA (United States Environmental Protection Agency). 1988. Design, construction and evaluation on of clay liners for waste management facilities. Technical Resource Document. EPA/530- SW-86-007F, NTIS PB 86-184496. Cincinnati: Hazardous Waste Engineering Research Laboratory, Office of Research and Development, U. S. Environmental Protection Agency.
Vanaamudan, A., and P. P. Sudhakar. 2015. “Equilibrium, kinetics and thermodynamic study on adsorption of reactive blue-21 and reactive red-141 by chitosan-organically modified nanoclay (Cloisite 30B) nano-bio composite.” J. Taiwan Inst. Chem. Eng. 55: 145–151. https://doi.org/10.1016/j.jtice.2015.03.025.
Yan, H., H. Xie, J. Wu, H. Ding, Z. Qiu, and Z. Sun. 2021. “Analytical model for transient coupled consolidation and contaminant transport in landfill liner system.” Comput. Geotech. 138: 104345. https://doi.org/10.1016/j.compgeo.2021.104345.
Zhang, F., W.-M. Ye, Y.-G. Chen, B. Chen, and Y.-J. Cui. 2016. “Influences of salt solution concentration and vertical stress during saturation on the volume change behavior of compacted GMZ01 bentonite.” Eng. Geol. 207: 48–55. https://doi.org/10.1016/j.enggeo.2016.04.010.
Zhang, Y., F. Wang, K. A. Hudson-Edwards, R. Blake, F. Zhao, Z. Yuan, and W. Gao. 2020. “Characterization of mining-related aromatic contaminants in active and abandoned metal(loid) tailings ponds.” Environ. Sci. Technol. 54 (23): 15097–15107. https://doi.org/10.1021/acs.est.0c03368.
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Journal of Hazardous, Toxic, and Radioactive Waste
Volume 27 • Issue 4 • October 2023
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© 2023 American Society of Civil Engineers.
History
Received: Jan 4, 2023
Accepted: Apr 29, 2023
Published online: Jun 20, 2023
Published in print: Oct 1, 2023
Discussion open until: Nov 20, 2023
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