Solidification/stabilization of copper-contaminated soil using magnesia-activated blast furnace slag
Tóm tắt
The effluents discharging from various industrial and anthropogenic activities may contain traces of heavy metals. In most countries, these effluents are being disposed into landfills or on the open lands or into nearby water bodies without any prior treatment which may lead to the leaching of heavy metals into the subsurface and causing heavy metal contamination in soils endangering humans and neighboring ecosystems. Solidification/stabilization (S/S) is one of the most efficient and widely adopted techniques to remediate heavy metal-contaminated soils by employing various cementitious materials. In light of this, a novel alkali-activated binder, comprising ground granulated blast furnace slag (GGBS) and magnesia, was developed to remediate copper-contaminated soils through the S/S technique. Copper-contaminated soils are synthesized in the laboratory with three different copper concentrations of 0.5, 1, and 2% representing naturally contaminated, industrially contaminated, and very highly contaminated soils, respectively. Variations of index properties, engineering properties, mineralogical and morphological characteristics of uncontaminated and copper-contaminated soils treated with magnesia-activated slag binder are studied. Unconfined compressive strength of uncontaminated soils increased proportionately as binder content increased from 3 to 15%, reflecting the development of binding gels by hydration processes, which is further corroborated by XRD analyses. Based on the stress–strain characteristics of these combinations, an optimum binder content of 6% was chosen for treating copper-contaminated soils. In the solidified/stabilized contaminated soil, the XRD analysis revealed the emergence of tenorite (copper oxide) which indicates the precipitation and reduced solubility of copper. Overall, magnesia-activated GGBS has shown great potential in the remediation of copper-contaminated soils.
Tài liệu tham khảo
Du YJ, Liu SY, Liu ZB, Chen L, Zhang F, Jin F (2010) An overview of stabilization/solidification technique for heavy metals contaminated soils. In: Chen Y, Zhan L, Tang X (eds) Advances in Environmental Geotechnics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-04460-1_93
Hunce SY, Akgul D, Demir G, Mertoglu B (2012) Solidification/stabilization of landfill leachate concentrate using different aggregate materials. Waste Manage 32(7):1394–1400
Chen L, Liu SY, Du YJ, Jin F (2010) Strength comparison of cement solidified/stabilized soils contaminated by lead and copper. In Geoenvironmental engineering and geotechnics: progress in modeling and applications, pp 103–110
Ouhadi VR, Yong RN, Deiranlou M (2021) Enhancement of cement-based solidification/stabilizationcement-based solidification/stabilization of a lead-contaminated smectite clay. J Hazard Mater 403:123969
Phanija N, Chavali RVP (2021) Solidification/stabilization of copper-contaminated soil using phosphogypsum. Innov Infrastruct Solut 6(3):1–11
Kogbara RB (2014) A review of the mechanical and leaching performance of stabilized/solidified contaminated soils. Environ Rev 22(1):66–86
Ballabio C, Panagos P, Lugato E, Huang JH, Orgiazzi A, Jones A et al (2018) Copper distribution in European topsoils: An assessment based on LUCAS soil survey. Sci Total Environ 636:282–298
Araya M, Olivares M, Pizarro F (2007) Copper in human health. Int J Environ Health 1(4):608–620
Sun YJ, Ma J, Chen YG, Tan BH, Cheng WJ (2020) Mechanical behavior of copper-contaminated soil solidified/stabilized with carbide slag and metakaolin. Environ Earth Sci 79(18):1–13
Pu W, Sun J, Zhang F, Wen X, Liu W, Huang C (2019) Effects of copper mining on heavy metal contamination in a rice agrosystem in the Xiaojiang River Basin, southwest China. Acta Geochim 38(5):753–773
Higgins D (2007) Briefing: GGBS and sustainability. In: Proceedings of the institution of civil engineers - Construction materials, vol 160, no 3, pp 99–101
Singh SP, Tripathy DP, Ranjith PG (2008) Performance evaluation of cement stabilized fly ash–GBFS mixes as a highway construction material. Waste Manage 28(8):1331–1337
Rashad AM (2018) An overview on rheology, mechanical properties and durability of high-volume slag used as a cement replacement in paste, mortar and concrete. Constr Build Mater 187:89–117
Du YJ, Bo YL, Jin F, Liu CY (2016) Durability of reactive magnesia-activated slag-stabilized low plasticity clay subjected to drying–wetting cycle. Eur J Environ Civ Eng 20(2):215–230
Yi Y, Liska M, Jin F, Al-Tabbaa A (2016) Mechanism of reactive magnesia–ground granulated blastfurnace slag (GGBS) soil stabilization. Can Geotech J 53(5):773–782
Shand MA (2006) The chemistry and technology of magnesia, vol 210. Wiley-Interscience, New York
Wang F, Wang H, Jin F, Al-Tabbaa A (2015) The performance of blended conventional and novel binders in the in-situ stabilisation/solidification of a contaminated site soil. J Hazard Mater 285:46–52
Goodarzi AR, Movahedrad M (2017) Stabilization/solidification of zinc-contaminated kaolin clay using ground granulated blast-furnace slag and different types of activators. Appl Geochem 81:155–165
Jin F, Gu K, Al-Tabbaa A (2015) Strength and hydration properties of reactive MgO-activated ground granulated blastfurnace slag paste. Cem Concr Compos 57:8–16
Wang F, Shen Z, Liu R, Zhang Y, Xu J, Al-Tabbaa A (2020) GMCs stabilized/solidified Pb/Zn contaminated soil under different curing temperature: physical and microstructural properties. Chemosphere 239:124738
Cai G, Liu S (2017) Compaction and mechanical characteristics and stabilization mechanism of carbonated reactive MgO-stabilized silt. KSCE J Civ Eng 21(7):2641–2654
Cai G, Liu S, Du G, Chen Z, Zheng X, Li J (2021) Mechanical performances and microstructural characteristics of reactive MgO-carbonated silt subjected to freezing-thawing cycles. J Rock Mech Geotech Eng 13(4):875–884
Yi Y, Liska M, Al-Tabbaa A (2014) Properties of two model soils stabilized with different blends and contents of GGBS, MgO, lime, and PC. J Mater Civ Eng 26(2):267–274
Yi Y, Liska M, Al-Tabbaa A (2014) Properties and microstructure of GGBS–magnesia pastes. Adv Cem Res 26(2):114–122
Latifi N, Vahedifard F, Siddiqua S, Horpibulsuk S (2018) Solidification–stabilization of heavy metal–contaminated clays using gypsum: Multiscale assessment. Int J Geomech 18(11):04018150
IS (Indian Standard) (1980) Determination of water content-dry density relation using light compaction. Bureau of Indian Standards 2720 (Part 7), New Delhi
IS (Indian Standard) 1991 Determination of unconfined compressive strength. Bureau of Indian Standards 2720 (Part 10), New Delhi
IS (Indian Standard) (1985) Determination of Liquid and Plastic Limit. Bureau of Indian Standards 2720 (Part 5), New Delhi
IS (Indian Standard) (1987) Determination of pH value. Bureau of Indian Standards 2720 (Part 26), New Delhi
Wang MK, Wang SL, Wang WM (1996) Rapid estimation of cation-exchange capacities of soils and clays with methylene blue exchange. Soil Sci Soc Am J 60(1):138–141
Yi Y, Gu L, Liu S, Jin F (2016) Magnesia reactivity on activating efficacy for ground granulated blast furnace slag for soft clay stabilisation. Appl Clay Sci 126:57–62
Li C, Zhou K, Qin W, Tian C, Qi M, Yan X, Han W (2019) A review on heavy metals contamination in soil: effects, sources, and remediation techniques. Soil Sedim Contam: Int J 28(4):380–394
Thomas A, Tripathi RK, Yadu LK (2018) A laboratory investigation of soil stabilization using enzyme and alkali-activated ground granulated blast-furnace slag. Arab J Sci Eng 43(10):5193–5202
Moon DH, Lee JR, Grubb DG, Park JH (2010) An assessment of Portland cement, cement kiln dust and Class C fly ash for the immobilization of Zn in contaminated soils. Environ Earth Sci 61(8):1745–1750
Islam S, Haque A, Wilson SA (2014) Effects of curing environment on the strength and mineralogy of lime-GGBS–treated acid sulphate soils. J Mater Civ Eng 26(5):1003–1008
Li JS (2019) Study on mechanism of phosphate-based cementing material for S/S of Pb-contaminated soil. In: Evolution mechanism on structural characteristics of lead-contaminated soil in the solidification/stabilization process. Springer, Singapore, pp 55–86
Warkentin BP (1961) Interpretation of the upper plastic limit of clays. Nature 190(4772):287–288
Fruhwirth O, Herzog GW, Hollerer I, Rachetti A (1985) Dissolution and hydration kinetics of MgO. Surf Technol 24(3):301–317
Jin F, Gu K, Abdollahzadeh A, Al-Tabbaa A (2015) Effects of different reactive MgOs on the hydration of MgO-activated GGBS paste. J Mater Civ Eng 27(7):B4014001
Vindula SK, Chavali RVP, Reddy PHP, Srinivas T (2019) Ground granulated blast furnace slag to control alkali induced swell in kaolinitic soils. Int J Geotech Eng 13(4):377–384