References:
1. He, K., Chen, Y., Tang, Z., et al. “Removal of heavy metal ions from aqueous solution by zeolite synthesized from fly ash”, Environmental Science and Pollution Research, 23, pp. 2778-2788 (2016). https://doi.org/10.1007/s11356-015-5422-6
2. Papandreou, A., Stournaras, C.J., and Panias, D. “Copper and cadmium adsorption on pellets made from fired coal fly ash”, Journal of Hazardous Materials, 148(3), pp. 538-547 (2007). https://doi.org/10.1016/j.jhazmat.2007.03.020
3. Xiyili, H., Çetintaş, S., and Bingöl, D. “Removal of some heavy metals onto mechanically activated fly ash: Modeling approach for optimization, isotherms, kinetics and thermodynamics”, Process Safety and Environmental Protection, 109, pp. 288-300 (2017). https://doi.org/10.1016/j.psep.2017.04.012
4. Wang, S. and Wu, H. “Environmental-benign utilisation of fly ash as low-cost adsorbents”, Journal of hazardous materials, 136(3), pp. 482-501(2006). https://doi.org/10.1016/j.jhazmat.2006.01.067
5. Bayat, B. “Comparative study of adsorption properties of Turkish fly ashes: I. The case of nickel (II), copper (II) and zinc (II)”, Journal of Hazardous Materials, 95(3), pp. 251-273 (2002). https://doi.org/10.1016/S0304-3894(02)00140-1
6. Fewtrell, L., Kay, D., Jones, F., et al. “Copper in drinking water-an investigation into possible health effects”, Public Health, 110(3), pp. 175-177 (1996). https://doi.org/10.1016/S0033-3506(96)80072-2
7. Rahimzadeh, M.R., Rahimzadeh, M.R., Kazemi, S., et al. “Cadmium toxicity and treatment: An update”, Caspian Journal of Internal Medicine, 8(3), p. 135 (2017). https://doi.org/10.22088/cjim.8.3.135
8. Ara, A. and Usmani, J.A. “Lead toxicity: A review”, Interdisciplinary Toxicology, 8(2), p. 55 (2015). https://doi.org/10.1515/intox-2015-0009
9. Aigbe, U.O., Ukhurebor, K.E., Onyancha, R.B., et al. “Fly ash-based adsorbent for adsorption of heavy metals and dyes from aqueous solution: A review”, Journal of Materials Research and Technology, 14, pp. 2751-2774 (2021). https://doi.org/10.1016/j.jmrt.2021.07.140
10. Ricou-Hoeffer, P., Lecuyer, I., and Le Cloirec, P. “Experimental design methodology applied to adsorption of metallic ions onto fly ash”, Water Research, 35(4), pp. 965-976 (2001). https://doi.org/10.1016/S0043-1354(00)00341-9
11. Lin, C.J. and Chang, J.E. “Effect of fly ash characteristics on the removal of Cu (II) from aqueous solution”, Chemosphere, 44(5), pp. 1185- 1192 (2001). https://doi.org/10.1016/S0045-6535(00)00494-X
12. Ayala, J., Blanco, F., Garcìa, P., et al. “Asturian fly ash as a heavy metals removal material”, Fuel, 77(11), pp. 1147-1154 (1998). https://doi.org/10.1016/S0016-2361(98)00027-1
13. Balsamo, M., Di Natale, F., Erto, A., et al. “Arsenate removal from synthetic wastewater by adsorption onto fly ash”, Desalination, 263(1-3), pp. 58-63 (2010). https://doi.org/10.1016/j.desal.2010.06.035
14. Qasem, N.A., Mohammed, R.H., and Lawal, D.U. “Removal of heavy metal ions from wastewater: A comprehensive and critical review”, Npj Clean Water, 4, p. 36 (2021). https://doi.org/10.1038/s41545-021-00127-0
15. Maftouh, A., El Fatni, O., El Hajjaji, S., et al. “Comparative review of different adsorption techniques used in heavy metals removal in water”, Biointerface Research in Applied Chemistry, 13, p. 397 (2023). https://doi.org/10.33263/BRIAC134.397
16. Raji, Z., Karim, A., Karam, A., et al. “Adsorption of heavy metals: Mechanisms, kinetics, and applications of various adsorbents in wastewater remediation-a review”, Waste, 1(3), pp. 775-805 (2023). https://doi.org/10.3390/waste1030046
17. Aigbe, U.O., Ukhurebor, K.E., Onyancha, R.B., et al. “Fly ash-based adsorbent for adsorption of heavy metals and dyes from aqueous solution: A review”, Journal of Materials Research and Technology, 14, pp. 2751-2774 (2021). https://doi.org/10.1016/j.jmrt.2021.07.140
18. Kong, Q., Shi, X., Ma, W., et al. “Strategies to improve the adsorption properties of graphene-based adsorbent towards heavy metal ions and their compound pollutants: A review”, Journal of Hazardous Materials, 415, 125690 (2021). https://doi.org/10.1016/j.jhazmat.2021.125690
19. Srivastava, S.K., Singh, A.K., and Sharma, A. “Studies on the uptake of lead and zinc by lignin obtained from black liquor–a paper industry waste material”, Environmental Technology, 15(4), pp. 353-361 (1994). https://doi.org/10.1080/09593339409385438
20. Hizal, J. and Apak, R. “Modeling of cadmium (II) adsorption on kaolinite-based clays in the absence and presence of humic acid”, Applied Clay Science, 32(3-4), pp. 232-244 (2006). https://doi.org/10.1016/j.clay.2006.02.002
21. Dan, Y., Xu, L., Qiang, Z., et al. “Preparation of green biosorbent using rice hull to preconcentrate, remove and recover heavy metal and other metal elements from water”, Chemosphere, 262, 127940 (2021). https://doi.org/10.1016/j.chemosphere.2020.127940
22. AbdelGhany, G.S., Ebrahiem, E.E., Mohamed, H.F., et al. “Eco-friendly activated carbon developed from rice hulls for chromium and iron ion removal”, Journal of Environmental Engineering and Science, 17(2), pp. 53-66 (2022). https://doi.org/10.1680/jenes.21.00002
23. Okoro, H.K., Alao, S.M., Pandey, S., et al. “Recent potential application of rice husk as an eco-friendly adsorbent for removal of heavy metals”, Applied Water Science, 12(12), 259 (2022). https://doi.org/10.1007/s13201-022-01778-1
24. Sireesha, S., Agarwal, A., Sopanrao, K.S., et al. “Modified coal fly ash as a low-cost, efficient, green, and stable adsorbent for heavy metal removal from aqueous solution”, Biomass Conversion and Biorefinery, 15, pp. 21685-21708 (2022). https://doi.org/10.1007/s13399-022-02695-8
25. Panek, R., Medykowska, M., Wiśniewska, M., et al. “Simultaneous removal of Pb2+ and Zn2+ heavy metals using fly ash Na-X zeolite and its carbon Na-X (C) composite”, Materials, 14(11), 2832 (2021). https://doi.org/10.3390/ma14112832
26. Elkhaleefa, A., Ali, I.H., Brima, E.I., et al. “Evaluation of the adsorption efficiency on the removal of lead (II) ions from aqueous solutions using Azadirachta indica leaves as an adsorbent”, Processes, 9(3), 559 (2021). https://doi.org/10.3390/pr9030559
27. Mužek, M.N., Svilović, S., and Zelić, J. “Fly ash-based geopolymeric adsorbent for copper ion removal from wastewater”, Desalination and Water Treatment, 52(13- 15), pp. 2519-2526 (2014). https://doi.org/10.1080/19443994.2013.792015
28. Zhao, G., Huang, X., Tang, Z., et al. “Polymer-based nanocomposites for heavy metal ions removal from aqueous solution: a review”, Polymer Chemistry, 9(26), pp. 3562-3582 (2018). https://doi.org/10.1039/C8PY00484F
29. Nowak, B., Aschenbrenner, P., and Winter, F. “Heavy metal removal from sewage sludge ash and municipal solid waste fly ash-a comparison”, Fuel Processing Technology, 105, pp. 195-201 (2013). https://doi.org/10.1016/j.fuproc.2011.06.027
30. Renu, M.A., Singh, K., Upadhyaya, S., et al. “Removal of heavy metals from wastewater using modified agricultural adsorbents”, Materials Today: Proceedings, 4(9), pp. 10534-10538 (2017). https://doi.org/10.1016/j.matpr.2017.06.415
31. Fu, F. and Wang, Q. “Removal of heavy metal ions from wastewaters: A review”, Journal of Environmental Management, 92(3), pp. 407-418 (2011). https://doi.org/10.1016/j.jenvman.2010.11.011
32. Saito, T., Koopal, L.K., Nagasaki, S., et al. “Analysis of copper binding in the ternary system Cu2+/humicacid/goethite at neutral to acidic Ph”, Environmental Science and Technology, 39(13), pp. 4886-4893 (2005). https://doi.org/10.1021/es0500308
33. Wu, C.H., Lin, C.F., Ma, H.W., et al. “Effect of fulvic acid on the sorption of Cu and Pb onto γ-Al2O3”, Water Research, 37(4), pp. 743-752 (2003). https://doi.org/10.1016/S0043-1354(02)00391-3
34. Yan, W.L. and Bai, R. “Adsorption of lead and humic acid on chitosan hydrogel beads”, Water Research, 39(4), pp. 688-698 (2005). https://doi.org/10.1016/j.watres.2004.11.007
35. Moyo, M., Muguni, L., and Nyamunda, B.C. “Optimisation of copper and zinc ions removal from aqueous solution by coal fly ash as an adsorbent”, International Journal of Engineering Science and Technology, 4, pp. 1760–1766 (2012).
36. Musapatika, E.T., Onyango, M.S., and Aoyi, O. “Cobalt (II) removal from synthetic wastewater by adsorption on South African coal fly ash”, South African Journal of Science, 106(9), pp. 1-7 (2010). https://doi.org/10.4102/sajs.v106i9/10.167
37. Ahmaruzzaman, M. “A review on the utilization of fly ash”, Progress in Energy and Combustion Science, 36(3), pp. 327-363 (2010). https://doi.org/10.1016/j.pecs.2009.11.003
38. Visa, M. “Synthesis and characterization of new zeolite materials obtained from fly ash for heavy metals removal in advanced wastewater treatment”, Powder Technology, 294, pp. 338-347 (2016). https://doi.org/10.1016/j.powtec.2016.02.019
39. Sočo, E. and Kalembkiewicz, J. “Adsorption of nickel (II) and copper (II) ions from aqueous solution by coal fly ash”, Journal of Environmental Chemical Engineering, 1(3), pp. 581-588 (2013). https://doi.org/10.1016/j.jece.2013.06.029
40. Pengthamkeerati, P., Satapanajaru, T., Chatsatapattayakul, N., et al. “Alkaline treatment of biomass fly ash for reactive dye removal from aqueous solution”, Desalination, 261(1-2), pp. 34-40 (2010). https://doi.org/10.1016/j.desal.2010.05.050
41. Hussain, Z., Chang, N., Sun, J., et al. “Modification of coal fly ash and its use as low-cost adsorbent for the removal of directive, acid and reactive dyes”, Journal of Hazardous Materials, 422, 126778 (2022). https://doi.org/10.1016/j.jhazmat.2021.126778
42. Eteba, A., Bassyouni, M., and Saleh, M., “Utilization of chemically modified coal fly ash as cost-effective adsorbent for removal of hazardous organic wastes”, International Journal of Environmental Science and Technology, 20(7), pp.7589-7602 (2023). https://doi.org/10.1007/s13762-022-04457-5
43. Kobayashi, Y., Ogata, F., Saenjum, C., et al. “Adsorption/desorption capability of potassium-type zeolite prepared from coal fly ash for removing of Hg2+”, Sustainability, 13(8), 4269 (2021). https://doi.org/10.3390/su13084269
44. Darmayanti, L., Notodarmodjo, S., and Damanhuri, E. “Removal of copper (II) ions in aqueous solutions by sorption onto fly awsh”, Journal of Engineering & Technological Sciences, pp. 546-559 (2017). https://doi.org/10.5614/j.eng.technol.sci.2017.49.4.9
45. Al-Harahsheh, M.S., Al Zboon, K., Al-Makhadmeh, L., et al. “Fly ash based geopolymer for heavy metal removal: A case study on copper removal”, Journal of Environmental Chemical Engineering, 3(3), pp. 1669- 1677 (2015). https://doi.org/10.1016/j.jece.2015.06.005
46. Ankrah, A.F., Tokay, B., and Snape, C.E. “Heavy metal removal from aqueous solutions using fly-ash derived zeolite NaP1”, International Journal of Environmental Research, 16(2), 17 (2022). https://doi.org/10.1007/s41742-022-00395-9
47. Zhao, X., Zhao, H., Huang, X., et al. “Effect and mechanisms of synthesis conditions on the cadmium adsorption capacity of modified fly ash”, Ecotoxicology and Environmental Safety, 223, 112550 (2021). https://doi.org/10.1016/j.ecoenv.2021.112550
48. Vu, D.H., Bui, H.B., Bui, X.N., et al. “A novel approach in adsorption of heavy metal ions from aqueous solution using synthesized MCM-41 from coal bottom ash”, International Journal of Environmental Analytical Chemistry, 100(11), pp. 1226-1244 (2020). https://doi.org/10.1080/03067319.2019.1651300
49. Joseph, I.V., Tosheva, L., and Doyle, A.M. “Simultaneous removal of Cd (II), Co (II), Cu (II), Pb (II), and Zn (II) ions from aqueous solutions via adsorption on FAU-type zeolites prepared from coal fly ash”, Journal of Environmental Chemical Engineering, 8(4), 103895 (2020). https://doi.org/10.1016/j.jece.2020.103895
50. Singh, N.B., Agarwal, A., De, A., et al. “Coal fly ash: An emerging material for water remediation” International Journal of Coal Science & Technology, 9(1), 44 (2022). https://doi.org/10.1007/s40789-022-00512-1
51. Zhang, J., Yan, M., Sun, G., et al. “Simultaneous removal of Cu (II), Cd (II), Cr (VI), and rhodamine B in wastewater using TiO2 nanofibers membrane loaded on porous fly ash ceramic support”, Separation and Purification Technology, 272, 118888 (2021). https://doi.org/10.1016/j.seppur.2021.118888
52. Buema, G., Harja, M., Lupu, N., et al. “Adsorption performance of modified fly ash for copper ion removal from aqueous solution”, Water, 13(2), 207 (2021). https://doi.org/10.3390/w13020207
53. Segneanu, A.E., Marin, C. N., Vlase, G., et al. “Highly efficient engineered waste eggshell-fly ash for cadmium removal from aqueous solution”, Scientific Reports, 12(1), 9676 (2022). https://doi.org/10.1038/s41598-022-13664-6
54. Harja, M., Buema, G., Lupu, N., et al. “Fly ash coated with magnetic materials: Improved adsorbent for Cu (II) removal from wastewater”, Materials, 14(1), 63 (2020). https://doi.org/10.3390/ma14010063
55. Boro, J.R. “Report on fly ash generation at coal / lignite based thermal power stations and its utilization in the country for the year 2020-21”, Central Electricity Authority, New Delhi (2021).
56. Xu, H., Qin, Q., Zhang, C., et al. “Adsorption of organic constituents from reverse osmosis concentrate in coal chemical industry by coking coal”, Processes, 7(1), p. 44 (2019). https://doi.org/10.3390/pr7010044
57. Sun, X., Ma, L., Ye, G., et al. “Phenol adsorption kinetics and isotherms on coal: effect of particle size”, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 43(4), pp. 461-474 (2021). https://doi.org/10.1080/15567036.2019.1628130
58. Ho, Y.S. and Chiang, C.C. “Sorption studies of acid dye by mixed sorbents”, Adsorption, 7, pp. 139-147 (2001). https://doi.org/10.1023/A:1011652224816
59. Ho, Y.S. and McKay, G. “Pseudo-second order model for sorption processes”, Process Biochemistry, 34(5), pp. 451-465 (1999). https://doi.org/10.1016/S0032-9592(98)00112-5
60. Ricou, P., Lecuyer, I., and Le Cloirec, P. “Removal of Cu2+, Zn2+ and Pb2+ by adsorption onto fly ash and fly ash/lime mixing”, Water Science and Technology, 39(10-11), pp. 239-247 (1999). https://doi.org/10.1016/S0273-1223(99)00284-X
61. Cho, H., Oh, D., and Kim, K. “A study on removal characteristics of heavy metals from aqueous solution by fly ash”, Journal of Hazardous Materials, 127(1-3), pp. 187-195. (2005). https://doi.org/10.1016/j.jhazmat.2005.07.019
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