Adsorption Performance and Mechanism of Phosphate in Water by Magnesium Oxide-Corncob Biochar
Publication: Journal of Environmental Engineering
Volume 149, Issue 9
Abstract
In this study, magnesium oxide-corncob biochar (MgO-CB) was prepared by modified corncob biomass for the adsorptive removal of phosphate from water. The adsorbents were characterized by scanning electron microscopy (SEM), x-ray diffractometer (XRD), and Fourier transform infrared spectroscopy (FT-IR), and the adsorption mechanism of the adsorbents was studied. Batch adsorption experiments studied the adsorption performance of MgO-CB for phosphate, and the effects of solution pH, adsorbent dosage, and coexisting ions on the adsorption effect were also investigated. The results showed that the theoretical maximum adsorption capacity of MgO-CB could reach when the initial phosphate concentration was . MgO-CB exhibited good adsorption performance in the pH range of 3 to 10, and the coexisting ions and significantly impacted the adsorption. The adsorption process of MgO-CB for phosphate proceeded relatively fast in the first 400 min and basically tended to equilibrium around 600 min. The adsorption process was consistent with the pseudo-second-order kinetic model and the Langmuir isothermal adsorption model, indicating that the adsorption process was dominated by chemisorption. Thermodynamic analysis showed that the change in temperature from 15°C to 45°C had little effect on the adsorption capacity of MgO-CB for phosphate, and the adsorption process was spontaneous, endothermic, and entropy-increasing. The mechanism of phosphate adsorption by MgO-CB involved electrostatic attraction, chemical precipitation, and ligand exchange to form inner-sphere complexation.
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Data Availability Statement
All data, models, and code generated used during the study appear in the published article.
Acknowledgments
This work was supported by the Natural Science Foundation of Jiangxi Province, China (No. 20224BAB203042), and the Science and Technology Project of Jiangxi Provincial Education Department, China (No. GJJ210614).
References
Ajmal, Z., A. Muhmood, R. Dong, and S. Wu. 2020. “Probing the efficiency of magnetically modified biomass-derived biochar for effective phosphate removal.” J. Environ. Manage. 253 (Jan): 109730. https://doi.org/10.1016/j.jenvman.2019.109730.
Bolbol, H., M. Fekri, and M. Hejazi-Mehrizi. 2019. “Layered double hydroxide–loaded biochar as a sorbent for the removal of aquatic phosphorus: Behavior and mechanism insights.” Arabian J. Geosci. 12 (Aug): 1–11. https://doi.org/10.1007/s12517-019-4694-4.
He, J., W. Wang, F. Sun, W. Shi, D. Qi, K. Wang, R. Shi, F. Cui, C. Wang, and X. Chen. 2015. “Highly efficient phosphate scavenger based on well-dispersed nanorods in polyacrylonitrile nanofibers for nutrient-starvation antibacterial.” ACS Nano 9 (9): 9292–9302. https://doi.org/10.1021/acsnano.5b04236.
Jia, Z., W. Zeng, H. Xu, S. Li, and Y. Peng. 2020. “Adsorption removal and reuse of phosphate from wastewater using a novel adsorbent of lanthanum-modified platanus biochar.” Process Saf. Environ. Prot. 140 (Jun): 221–232. https://doi.org/10.1016/j.psep.2020.05.017.
Jiang, D., B. Chu, Y. Amano, and M. Machida. 2018. “Removal and recovery of phosphate from water by Mg-laden biochar: Batch and column studies.” Colloids Surf., A 558 (Dec): 429–437. https://doi.org/10.1016/j.colsurfa.2018.09.016.
Jung, K., S. Y. Lee, J. Choi, M. Hwang, and W. G. Shim. 2021. “Synthesis of Mg-Al layered double hydroxides-functionalized hydrochar composite via an in situ one-pot hydrothermal method for arsenate and phosphate removal: Structural characterization and adsorption performance.” Chem. Eng. J. 420 (Sep): 129775. https://doi.org/10.1016/j.cej.2021.129775.
Lee, S. Y., J. Choi, K. G. Song, K. Choi, Y. J. Lee, and K. Jung. 2019. “Adsorption and mechanistic study for phosphate removal by rice husk-derived biochar functionalized with Mg/Al-calcined layered double hydroxides via co-pyrolysis.” Composites, Part B 176 (Nov): 107209. https://doi.org/10.1016/j.compositesb.2019.107209.
Li, R., J. J. Wang, B. Zhou, Z. Zhang, S. Liu, S. Lei, and R. Xiao. 2017. “Simultaneous capture removal of phosphate, ammonium and organic substances by MgO impregnated biochar and its potential use in swine wastewater treatment.” J. Cleaner Prod. 147 (Mar): 96–107. https://doi.org/10.1016/j.jclepro.2017.01.069.
Liao, T., T. Li, X. Su, X. Yu, H. Song, Y. Zhu, and Y. Zhang. 2018. “-modified magnetic pineapple biochar as novel adsorbents for efficient phosphate removal.” Bioresour. Technol. 263 (Apr): 207–213. https://doi.org/10.1016/j.biortech.2018.04.108.
Liu, X., F. Shen, and X. Qi. 2019. “Adsorption recovery of phosphate from aqueous solution by CaO-biochar composites prepared from eggshell and rice straw.” Sci. Total Environ. 666 (May): 694–702. https://doi.org/10.1016/j.scitotenv.2019.02.227.
Micháleková-Richveisová, B., V. Frišták, M. Pipíška, L. Ďuriška, E. Moreno-Jimenez, and G. Soja. 2017. “Iron-impregnated biochars as effective phosphate sorption materials.” Environ. Sci. Pollut. Res. 24 (1): 463–475. https://doi.org/10.1007/s11356-016-7820-9.
Mohan, D., A. Sarswat, Y. S. Ok, and C. U. Pittman. 2014. “Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent–A critical review.” Bioresour. Technol. 160 (Jun): 191–202. https://doi.org/10.1016/j.biortech.2014.01.120.
Novais, S. V., M. D. O. Zenero, J. Tronto, R. F. Conz, and C. E. P. Cerri. 2018. “Poultry manure and sugarcane straw biochars modified with for phosphorus adsorption.” J. Environ. Manage. 214 (15): 36–44. https://doi.org/10.1016/j.jenvman.2018.02.088.
Palansooriya, K. N., S. Kim, A. D. Igalavithana, Y. Hashimoto, Y. Choi, R. Mukhopadhyay, B. Sarkar, and Y. S. Ok. 2021. “Fe(III) loaded chitosan-biochar composite fibers for the removal of phosphate from water.” J. Hazard. Mater. 415 (Aug): 125464. https://doi.org/10.1016/j.jhazmat.2021.125464.
Peng, G., S. Jiang, Y. Wang, Q. Zhang, Y. Cao, Y. Sun, W. Zhang, and L. Wang. 2020. “Synthesis of Mn/Al double oxygen biochar from dewatered sludge for enhancing phosphate removal.” J. Cleaner Prod. 251 (Apr): 119725. https://doi.org/10.1016/j.jclepro.2019.119725.
Rodrigues, L. A., L. J. Maschio, L. S. Coppio, G. P. Thim, and S. M. Da. 2012. “Adsorption of phosphate from aqueous solution by hydrous zirconium oxide.” Environ. Technol. 33 (12): 1345–1351. https://doi.org/10.1080/09593330.2011.632651.
Saadat, S., E. Raei, and N. Talebbeydokhti. 2018. “Enhanced removal of phosphate from aqueous solutions using a modified sludge derived biochar: Comparative study of various modifying cations and RSM based optimization of pyrolysis parameters.” J. Environ. Manage. 225 (8): 75–83. https://doi.org/10.1016/j.jenvman.2018.07.037.
Shi, Z., F. Liu, and S. Yao. 2011. “Adsorptive removal of phosphate from aqueous solutions using activated carbon loaded with Fe(III) oxide.” New Carbon Mater. 26 (4): 299–306. https://doi.org/10.1016/S1872-5805(11)60083-8.
Søndergaard, M., T. L. Lauridsen, L. S. Johansson, and E. Jeppesen. 2017. “Nitrogen or phosphorus limitation in lakes and its impact on phytoplankton biomass and submerged macrophyte cover.” Hydrobiologia 795 (1): 35–48. https://doi.org/10.1007/s10750-017-3110-x.
Tang, Q., C. Shi, W. Shi, X. Huang, Y. Ye, W. Jiang, J. Kang, D. Liu, Y. Ren, and D. Li. 2019. “Preferable phosphate removal by nano-La(III) hydroxides modified mesoporous rice husk biochars: Role of the host pore structure and point of zero charge.” Sci. Total Environ. 662 (Apr): 511–520. https://doi.org/10.1016/j.scitotenv.2019.01.159.
Thant Zin, M. M., and D. Kim. 2021. “Simultaneous recovery of phosphorus and nitrogen from sewage sludge ash and food wastewater as struvite by Mg-biochar.” J. Hazard. Mater. 403 (Feb): 123704. https://doi.org/10.1016/j.jhazmat.2020.123704.
Wang, B., G. Lian, X. Lee, B. Gao, L. Li, T. Liu, X. Zhang, and Y. Zheng. 2020. “Phosphogypsum as a novel modifier for distillers grains biochar removal of phosphate from water.” Chemosphere 238 (Jun): 124684. https://doi.org/10.1016/j.chemosphere.2019.124684.
Wang, Z., D. Shen, F. Shen, and T. Li. 2016. “Phosphate adsorption on lanthanum loaded biochar.” Chemosphere 150 (Feb): 1–7. https://doi.org/10.1016/j.chemosphere.2016.02.004.
Wu, Y., X. Li, Q. Yang, D. Wang, Q. Xu, F. Yao, F. Chen, Z. Tao, and X. Huang. 2019. “Hydrated lanthanum oxide-modified diatomite as highly efficient adsorbent for low-concentration phosphate removal from secondary effluents.” J. Environ. Manage. 231 (Feb): 370–379. https://doi.org/10.1016/j.jenvman.2018.10.059.
Yang, Q., et al. 2018. “Effectiveness and mechanisms of phosphate adsorption on iron-modified biochars derived from waste activated sludge.” Bioresour. Technol. 247 (Jan): 537–544. https://doi.org/10.1016/j.biortech.2017.09.136.
Yin, Q., M. Liu, Y. Li, H. Li, and Z. Wen. 2021. “Computational study of phosphate adsorption on Mg/Ca modified biochar structure in aqueous solution.” Chemosphere 269 (Apr): 129374. https://doi.org/10.1016/j.chemosphere.2020.129374.
Zhang, L., Q. Zhou, J. Liu, N. Chang, L. Wan, and J. Chen. 2012. “Phosphate adsorption on lanthanum hydroxide-doped activated carbon fiber.” Chem. Eng. J. 185–186 (Mar): 160–167. https://doi.org/10.1016/j.cej.2012.01.066.
Zhu, D., Y. Chen, H. Yang, S. Wang, X. Wang, S. Zhang, and H. Chen. 2020. “Synthesis and characterization of magnesium oxide nanoparticle-containing biochar composites for efficient phosphorus removal from aqueous solution.” Chemosphere 247 (May): 125847. https://doi.org/10.1016/j.chemosphere.2020.125847.
Zhu, N., T. Yan, J. Qiao, and H. Cao. 2016. “Adsorption of arsenic, phosphorus and chromium by bismuth impregnated biochar: Adsorption mechanism and depleted adsorbent utilization.” Chemosphere 164 (Dec): 32–40. https://doi.org/10.1016/j.chemosphere.2016.08.036.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 149 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jan 3, 2023
Accepted: May 26, 2023
Published online: Jul 10, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 10, 2023
ASCE Technical Topics:
- Adsorption
- Ashes
- Biomass
- Chemical compounds
- Chemical elements
- Chemical processes
- Chemical properties
- Chemicals
- Chemistry
- Computer vision and image processing
- Energy engineering
- Energy sources (by type)
- Engineering fundamentals
- Engineering materials (by type)
- Environmental engineering
- Fuels
- Magnesium
- Materials engineering
- Methodology (by type)
- Non-renewable energy
- pH
- Phosphate
- Renewable energy
- Salts
- Sorption
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