Controlling reactions during heavy metal leaching from municipal solid waste incineration fly ash Scientific paper
Article Sidebar
Main Article Content
Abstract
This research aimed to characterize the physical and chemical properties of municipal solid waste (MSW) incineration fly ash, as well as to investigate the leaching of heavy metals during toxicity characteristics leaching procedure (TCLP) process. To understand the leaching behaviour, concentrations of heavy metals, chloride, sulphate and calcium at various leaching, time was monitored together with pH of the leaching solution. Results showed that the chemical compositions of fly ashes led to differences in leaching environment. For the two fly ashes under study, one resulted in a leaching environment with pH of 10–12 while the other had pH about 6–7. Based on pH, anions and cations concentrations, Minteq software was employed to investigate the speciation of heavy metals. Results showed that the shift in precipitation/dissolution balance of carbonate and hydroxides of heavy metals could explain the fluctuation in metal concentrations during the leaching process, which indicates that leaching was probably controlled by these reactions. On the other hand, addition of EDTA changed the controlling reactions. Chelating reactions between heavy metals and EDTA led to much higher leaching toxicity due to the presence of heavy metals, showing that the presence of chelating organics in natural environment may facilitate heavy metal leaching.
Downloads
Metrics
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution license 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Funding data
-
Natural Science Foundation of Shanghai
Grant numbers 14ZR1428900 -
National Natural Science Foundation of China
Grant numbers 21707090
References
M. A. Al-Ghouti, M. Khan, M. S. Nasser, K. Al-Saad, O. E. Heng, Environ. Technol. Inn. 21 (2021) 101267 (https://doi.org/10.1016/j.eti.2020.101267)
B. C. Liu, L. Zhang, Q. S. Wang, Waste Manage. 134 (2021) 42 (https://doi.org/10.1016/j.wasman.2021.08.007)
P. F. Ren, T. C. Ling, K. H. Mo, J. Hazard. Mater. 424 (2022) 127457 (https://doi.org/10.1016/j.jhazmat.2021.127457)
R. Voss, R. P. Lee, L. Seidl, F. Keller, M. Frohling, Waste Manage. 134 (2021) 206 (https://doi.org/10.1016/j.wasman.2021.07.040)
R. V. Silva, J. Brito, C. J. Lynn, R. K. Dhir, Resour. Conserv. Recycl. 140 (2019) 23 (https://doi.org/10.1016/j.resconrec.2018.09.011)
Y. B. Fan, S. J. Li, Y. B. Li, H. Q. Liang, M. X. Tang, K. K. Huang, L. Zhu, J. Build. Eng. 44 (2021b) 103427 (https://doi.org/10.1016/j.jobe.2021.103427)
Y. M. Wei, T. Shimaoka, A. Saffarzadeh, F. Takahashi, J. Hazard. Mater. 187 (2011) 534 (https://doi.org/10.1016/j.jhazmat.2011.01.070)
F. Huber, J. Fellner, Resour. Conserv. Recycl. 139 (2018), 17 (https://doi.org/10.1016/j.resconrec.2018.08.003)
C. C. Fan, B. M. Wang, H. M. Ai, Y. Qi, Z. Liu, J. Clean. Prod., A 319 (2021) 128790 (https://doi.org/10.1016/j.jclepro.2021.128790)
S. Y. Han, T. Y. Ju, Y. Meng, Y. F. Du, H. L. Xiang, A. Aihemaiti, J. G. Jiang, J. Clean. Prod. 321 (2021) 128922 (https://doi.org/10.1016/j.jclepro.2021.128922)
H. W. Luo, D. Q. He, W. P. Zhu, Y. C. Wu, Z. T. Chen, E. H. Yang, Waste Manage., B 84 (2019) 83 (https://doi.org/10.1016/j.wasman.2018.11.037)
S. L. Pei, T. L. Chen, S. Y. Pan, Y. L. Yang, Z. H. Sun, Y. J. Li, J. Hazard. Mater. 398 (2020), 122959 https://doi.org/10.1016/j.jhazmat.2020.122959
D. H. Yan, Z. Peng, L. F. Yu, Y. Z. Sun, R. Yong, K. H. Karstensen, Waste Manage. 76 (2018) 106 (https://doi.org/10.1016/j.wasman.2018.03.006)
S. K. Nath, S. Kumar, J. Non-Cryst. Solids 505 (2019) 241 (https://doi.org/10.1016/j.jnoncrysol.2018.11.007)
N. Ogawa, T. Amano, Y. Nagai, K. Hagiwara, T. Honda, Y. Koike, Waste Manage. 124 (2021) 154 (https://doi.org/10.1016/j.wasman.2021.02.016)
F. Liu, S. H. Ma, K. Ren, X. H. Wang, Sci. Total Environ. 708 (2020) 135095 (https://doi.org/10.1016/j.scitotenv.2019.135095)
H. W. Wang, X. X. Fan, Y. Wang, W. H. Li, Y. J. Sun, M. L. Zhan, G. Z. Wu, J. Environ. Manage. 208 (2018) 15 (https://doi.org/10.1016/j.jenvman.2017.11.071)
X. Wang, K. Zhu, L. Zhang, A. Li, C. Chen, J. Huang, Y. Zhang, J. Environ. Manage. 301 (2022) 113856 https://doi.org/10.1016/j.jenvman.2021.113856)
C. C. Lu, M. H. Hsu, Y. P. Lin, J. Hazard. Mater. 368 (2019) 336 (https://doi.org/10.1016/j.jhazmat.2019.01.066)
Z. Y. Liu, Y. Yue, M. Lu, J. Zhang, F. C. Sun, X. Huang, J. Z. Zhou, G. R. Qian, Waste Manage. 84 (2019) 329 (http://dx.doi.org/10.1016/j.wasman.2018.11.049)
H. W. Luo, Y. Cheng, D. Q. He, E. H. Yang, Sci. Total Environ. 668 (2019a) 90 (https://doi.org/10.1016/j.scitotenv.2019.03.004)
Y. Yue, Z. Y. Liu, Z. Z. Liu, J. Zhang, M. Lu, J. Z. Zhou, G. R. Qian, J. Environ. Manage. 238 (2019) 144 (https://doi.org/10.1016/j.jenvman.2019.02.098)
E. Atanes, B. Cuesta-Garcia, A. Nieto-Marquez, F. Fernandez-Martinez, J. Environ. Manage. 240 (2019) 359 (https://doi.org/10.1016/j.jenvman.2019.03.122)
H. Yi, Z. Ai, Y. L. Zhao, X. Zhang, S. X. Song, Sol. Energy Mater. Sol. Cells 204 (2020) 110233 (https://doi.org/10.1016/j.solmat.2019.110233)
X. Y. Zhan, G. M. Kirkelund, J. Hazard. Mater. 412 (2021) 125220 (https://doi.org/10.1016/j.jhazmat.2021.125220)
W. P. Zhu, X. Chen, L. J. Struble, E. H. Yang, J. Clean. Prod. 192 (2018) 782 (https://doi.org/10.1016/j.jclepro.2018.05.049)
J. K. Prusty, B. Pradhan, Constr. Build. Mater. 241 (2020) 118049 https://doi.org/10.1016/j.conbuildmat.2020.118049
F. H. Wang, F. Zhang, Y. J. Chen, J. Gao, B. Zhao, J. Hazard. Mater. 300 (2015) 451 (https://doi.org/10.1016/j.jhazmat.2015.07.037)
D. C. W. Tsang, I. M. C. Lo, Environ. Sci. Technol. 40 (2006) 6655 (https://doi.org/10.1021/es060625i)
M. Lzquierdo, X. Querol, Int. J. Coal Geol. 94 (2012) 54 (https://doi.org/10.1016/j.coal.2011.10.006).