Optimizing Cu2+ adsorption with low-temperature sintered dolomite-based geopolymer
Source abstract
Abstract
Sintering process significantly improves Removal Efficiency (RE) of Copper (Cu) ions by enhancing microstructural properties, creating new active sites and increasing geopolymer material densification. However, geopolymer typically requires high-sintering temperature above 1200˚С, leading to substantial energy consumption and increased production costs. In contrast, geopolymer dolomite reduces the sintering temperature to 900 ˚С by producing metal oxides like periclase (MgO) and lime (CaO), which act as self-fluxing agent during the sintering process. Therefore, this study aims to develop a sustainable geopolymer adsorbent using dolomite as the primary precursor, utilizing different low sintering temperature between 600 ˚C to 900 ˚C. The effects of low sintering temperature on the microstructure, pore sizes, chemical changes and RE of Cu²⁺ ions were investigated. Characterization techniques such as Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray (EDX), X-ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) and Synchrotron Radiation X-ray Fluorescence (SR-XRF) were used to study the physicochemical properties of the developed geopolymer. Heating geopolymer dolomite at 800˚С achieved the highest RE of 99.81 %, followed by unsintered geopolymer dolomite (46.92 %) and raw dolomite (14.53 %). The results showed that sintering at 800°C with a heating rate of 5 °C/min produced a rounded shape with a formation of necking growth. Additionally, the formation of MgO and CaO further enhanced the removal of Cu²⁺ ions. SR-XRF analysis detected 93.11 % % of Cu on sintered geopolymer dolomite after adsorption, suggesting that Cu 2+ has successfully replaced Ca 2+ using ion exchange mechanisms. Thus, the sintering process influences final microstructure formation, improving RE of Cu²⁺ ions. This indicates that sintered geopolymer dolomite using low sintering temperature (800˚C) can effectively remove Cu²⁺ ions in wastewater treatment.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Recycling and utilization of industrial and municipal waste in materials production · Adsorption and biosorption for pollutant removal
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (99)
Show source-provided references
1. Porous geopolymeric spheres for removal of Cu(II) from aqueous solution: Synthesis and evaluation10.1016/j.jhazmat.2014.09.038 ↗
2. The use of natural zeolite to remove heavy metals Cu (II), Pb (II) and Cd (II), from industrial wastewater10.1080/23311916.2020.1782623 ↗
3. M. Jaishankar, T. Tseten, N. Anbalagan, B.B. Mathew, K.N. Beeregowda, A. Blessy, B. Mathew, Toxicity, mechanism and health effects of some heavy metals, (2014). https://doi.org/10.2478/intox-2014-0009.10.2478/intox-2014-0009 ↗
4. Geopolymer for use in heavy metals adsorption, and advanced oxidative processes: a critical review10.1016/j.jclepro.2018.12.145 ↗
5. Adsorption – desorption of heavy metal ions Adsorption – desorption of heavy metal ions
6. Synthesis, characterization and adsorption properties of low-cost porous calcined dolomite microspheres for removal of dyes10.1007/s11595-019-2080-4 ↗
7. A state-of-the-art review on wastewater treatment techniques: the effectiveness of adsorption method10.1007/s11356-021-12395-x ↗
8. Removal of boron by boron-selective adsorbent prepared using radiation induced grafting technique10.1080/19443994.2012.749054 ↗
9. A state-of-the-art review on innovative geopolymer composites designed for water and wastewater treatment
10. A green, porous and eco-friendly magnetic geopolymer adsorbent for heavy metals removal from aqueous solutions10.1016/j.jclepro.2019.01.084 ↗
11. Review on adsorption of heavy metal in wastewater by using geopolymer10.1051/matecconf/20179701023 ↗
12. Heavy metal removal from water by adsorption using a low-cost geopolymer10.1007/s11356-020-08482-0 ↗
13. Effect of the sintering mechanism on the crystallization kinetics of geopolymer-based ceramics
14. Adsorption of copper (II) and cadmium (II) ions by in situ doped nano-calcium carbonate high-intensity chitin hydrogels10.1016/j.jhazmat.2021.127137 ↗
15. Crystallization behavior and mechanical properties of high open porosity dolomite hollow microspheres filled hybrid geopolymer foams10.1016/j.cemconcomp.2019.103376 ↗
16. Geopolymer as an adsorbent of heavy metal: a review
17. Bioresource technology reports characterization and experimental evaluation of cow dung biochar + dolomite for heavy metal immobilization in solid waste from silica sand purification
18. Natural dolomite as a low-cost adsorbent for efficient removal of As(III) from aqueous solutions
19. An insight into the potential of dolomite powder as a sorbent in the elimination of heavy metals: a review10.1016/j.cscee.2022.100276 ↗
20. Adsorptive removal of phosphate from aqueous solutions using raw and calcinated dolomite10.1016/j.jhazmat.2005.08.003 ↗
21. Removal of phosphate anions from aqueous solutions using dolomite as adsorbent
22. Waste dolomite powder as an adsorbent of Cd, Pb(II), and Zn from aqueous solutions10.1007/s12665-017-6854-8 ↗
23. Arsenic(III,V) adsorption onto charred dolomite: charring optimization and batch studies10.1016/j.cej.2014.08.038 ↗
24. An insight into the potential of dolomite powder as a sorbent in the elimination of heavy metals: a review10.1016/j.cscee.2022.100276 ↗
25. Effect of naoh molar concentration on microstructure and compressive strength of dolomite/fly ash-based geopolymers10.24425/amm.2022.139693 ↗
26. Hydroxyapatite / Dolomite alkaline activated material reaction in the formation of low temperature sintered ceramic as adsorbent materials
27. Effect of sintering mechanism towards crystallization of geopolymer ceramic—a review
28. Correlation study on the effect of sintering mechanism with the properties of geopolymer-based ceramic10.1088/1742-6596/2643/1/012009 ↗
29. Effect of sintering temperature on sorption properties and compressive strength of calcium phosphate ceramic granules10.1016/j.matlet.2020.128858 ↗
30. Impact of sintering temperature and pH of feed solution on adsorptive removal of ammonia from wastewater using clinoptilolite based hollow fibre ceramic membrane10.1016/j.jwpe.2019.101063 ↗
31. The impact of hydroxyapatite sintering temperature on its microstructural, mechanical, and biological properties10.3390/ijms24065083 ↗
32. The effect of sintering temperature on the properties of metakaolin artificial lightweight aggregate10.1063/1.5003528 ↗
33. Sintering of metakaolin-based Na/Ca-geopolymers and their immobilization of Cs10.1111/jace.16631 ↗
34. Nano-rod hydroxyapatite for the uptake of nickel ions: Effect of sintering behaviour on adsorption parameters10.1016/j.jece.2021.105931 ↗
35. Role of sintering temperature in production of nepheline ceramics-based geopolymer with addition of ultra-high molecular weight polyethylene
36. Zeta potential study of thermally treated dolomite samples in electrolyte solutions10.1016/j.micromeso.2009.02.021 ↗
37. D. Li, Rapid sintering of ceramics by intense thermal radiation, 2016. 〈http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124131〉.
38. A review of carbonate minerals as an additive to geopolymer materials10.1088/1757-899X/551/1/012084 ↗
39. Equilibrium and isotherm studies on the adsorption of methylene blue and malachite green by activated carbon prepared from irvingia gabonensis seed shells
40. Synthesis of metakaolin based alkali activated materials as an adsorbent at different Na2SiO3/NaOH ratios and exposing temperatures for Cu2+ removal
41. Adsorption performance of modified fly ash for copper ion removal from aqueous solution
42. Fly ash-based geopolymer for Pb removal from aqueous solution10.1016/j.jhazmat.2011.01.133 ↗
43. Metakaolin/sludge based geopolymer adsorbent on high removal efficiency of Cu2+
44. The heavy metal adsorption characteristics on metakaolin-based geopolymer10.1016/j.clay.2011.11.027 ↗
45. Fly ash based geopolymer for the adsorption of anionic surfactant from aqueous solution10.1016/j.jclepro.2019.04.384 ↗
46. Copper(II) removal from the aqueous solution using microporous benzidine-based adsorbent material10.1016/j.jece.2015.12.041 ↗
47. Adsorptive efficiency of hull-based activated carbon toward copper ions (Cu2+) removal from aqueous solution: kinetics, modelling and statistical analysis10.1016/j.diamond.2023.110421 ↗
48. Performance of micro-beam X-ray absorption spectroscopy at beamline 7.2W of Synchrotron Light Research Institute10.1016/j.radphyschem.2023.110768 ↗
49. Fly ash based geopolymer for heavy metal removal: a case study on copper removal10.1016/j.jece.2015.06.005 ↗
50. Drying shrinkage, strength and microstructure of alkali-activated high-calcium fly ash using FGD-gypsum and dolomite as expansive additive10.1016/j.cemconcomp.2020.103760 ↗
51. Microstructure and mechanical properties of geopolymers with different dolomitic lime contents
52. Characteristics of Adsorption/Desorption Process on Dolomite Adsorbent in the Copper(II) Removal from Aqueous Solutions10.3390/ma16134648 ↗
53. Dolomite thermal behaviour: a proposal to establish a definitive decomposition mechanism in a convective air atmosphere
54. Enhanced adsorption of pb(Ii) from aqueous solution by magnesium-incorporated hydroxyapatite with poor crystalline structure10.5004/dwt.2019.24762 ↗
55. Diverse material based geopolymer towards heavy metals removal: a review10.1016/j.jmrt.2022.11.100 ↗
56. Addition of dolomite into metakaolin as geopolymer: a preliminary study10.1063/5.0026934 ↗
57. Application of X-ray diffraction analysis for sedimentological investigation of middle devonian dolomites from Northeastern Bulgaria
58. Recent advances in the application of dolomite in membrane separation and beyond: a review on an abundant and versatile mineral
59. Unraveling the cation adsorption of geopolymer binder: a molecular dynamics study10.1016/j.chemosphere.2023.139118 ↗
60. Effects of alkaline activators on pore structure and mechanical properties of ultrafine metakaolin geopolymers cured at room temperature10.1016/j.conbuildmat.2022.129678 ↗
61. Blending wastes of marble powder and dolomite sorbents for calcium-looping co2 capture under realistic industrial calcination conditions
62. Removal of Pb ( II) from aqueous solutions by periclase / calcite nanocomposites10.1007/s11270-019-4354-z ↗
63. Removal of pentachlorophenol from aqueous solutions by dolomitic sorbents10.1016/j.jcis.2005.10.030 ↗
64. Research and application progress of geopolymers in adsorption: a review10.3390/nano12173002 ↗
65. Metakaolin-red mud / carbon nanotubes geopolymer nanocomposite: mechanical properties and structural studies Metakaolin-red mud / carbon nanotubes geopolymer nanocomposite: mechanical properties and structural studies10.1088/2053-1591/ac54d6 ↗
66. Study on layer formation behavior of Ag joints sintered with pressureless sintering process10.1088/2053-1591/ac9d84 ↗
67. FTIR spectrum analysis to predict the crystalline and amorphous phases of hydroxyapatite: a comparison of vibrational motion to reflection10.1039/D3RA02580B ↗
68. Thermal decomposition analysis of indonesian natural dolomite in air10.4028/p-KVW9hC ↗
69. Effect of thermal treatment on natural dolomite10.1088/1742-6596/2080/1/012009 ↗
70. C.P. Teoh, Dolomite and high-magnesium calcite: Case studies from laboratory, field, and computer simulation studies, 2021. 〈https://hdl.handle.net/1969.1/195352〉.
71. A review of morphology analysis on dolomite as an additive material in geopolymer10.1088/1757-899X/743/1/012024 ↗
72. Review of dolomite as precursor of geopolymer materials10.1051/matecconf/20167801090 ↗
73. chemical distributions of different sodium hydroxide molarities on fly ash/dolomite-based geopolymer
74. Investigation into the effect of calcium on the existence form of geopolymerized gel product of fly ash based geopolymers10.1016/j.cemconcomp.2018.11.019 ↗
75. Production, characterization and performance of green geopolymer modified with industrial by-products10.1038/s41598-024-55494-8 ↗
76. Morphology of aluminum alloy foams produced with dolomite via partial sintering of precursors
77. Effects of sintering processes on microstructure evolution, crystallite, and grain growth of MoO2 powder10.3390/cryst13091311 ↗
78. A review of particle shape effects on material properties for various engineering applications: from macro to nanoscale10.3390/min13010091 ↗
79. Densification and microstructural evolution of bulk Al 2 O 3 –Y 3 Al 5 O 12 (YAG) eutectic ceramic fabricated by spark plasma sintering10.1016/j.ceramint.2019.03.151 ↗
80. Ceramsite made from drinking water treatment residue for water treatment: a critical review in association with typical ceramsite making10.1016/j.jenvman.2022.117000 ↗
81. A statistical approach to determine optimal models for IUPAC-classified adsorption isotherms10.3390/en12234565 ↗
82. Macro-porous dolomite hollow fibers sintered at different temperatures toward widened applications10.1016/j.ceramint.2017.08.214 ↗
83. Dolomite cores evaluated by NMR10.1016/j.petrol.2018.06.026 ↗
84. Do adsorbent pore size and specific surface area affect the kinetics of methyl orange aqueous phase adsorption ?
85. Utilization of agro-industrial and municipal waste materials as potential adsorbents for water treatment-A review10.1016/j.cej.2010.01.007 ↗
86. Effect of immobilization parameters on the immobilization of cyclodextrin glucanotranferase on hollow fiber membrane
87. Ceramic · Influ. Sinter. Temp. Pore Struct. · 2022 · 1
88. Bottom ash modification via sintering process for its use as a potential heavy metal adsorbent: sorption kinetics and mechanism
89. Examining the influence of sintering temperatures on the efficiency of 3D-printed natural zeolite for methylene blue dye adsorption
90. The use of limestones built of carbonate phases with increased mg content in processes of flue gas desulfurization10.3390/min11101044 ↗
91. Study on the performance of metakaolin based geopolymer for Mn(II) and Co(II) removal10.1016/j.clay.2018.04.027 ↗
92. Synthesis of nanogeopolymer adsorbent and its application and reusability in the removal of methylene blue from wastewater using response surface methodology (RSM)10.1038/s41598-024-70284-y ↗
93. Prospects for effective use of dolomite in concrete compositions
94. Recent advances in the application of dolomite in membrane separation and beyond: a review on an abundant and versatile mineral
95. Synthesis and spectral studies of Cr(III), Mn(II), Co(II), Ni(II), Cu(II) and Cd(II) complexes with new bidentate (N,O) Schiff Base ligand bearing an oxime functional group10.35950/cbej.v20i86.9733 ↗
96. Development of effective porous geopolymer adsorbent with high strength for copper(II) ion removal10.1016/j.jclepro.2024.141752 ↗
97. The adsorption properties of steel slag-based porous geopolymer for Cu2+ removal10.1016/j.mineng.2023.108225 ↗
98. The use of zeolite-based geopolymers as adsorbent for copper removal from aqueous media10.1098/rsos.211644 ↗
99. Quantifying gel properties of industrial waste-based geopolymers and their application in Pb2+ and Cu2+ removal10.1016/j.jclepro.2021.128203 ↗