Removal of Methylene Blue from Aqueous Solution by Phosphorus Tailings/Sludge-Derived Biochar

Main Article Content

Jinhong Zhang
1. School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, China; 2. The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China

Li-Juan Feng
1. School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, China; 2. The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China

Jinyu Luo
1. School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, China; 2. The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China

Wenlin Li
1. School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, China; 2. The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China

DOI: https://doi.org/10.70267/esg2026.v3n2.0106

Keywords

physical biochar, adsorption mechanism, isothermal adsorption, Boehm titration

Abstract

Municipal residual sludge and phosphorus tailings were used as raw materials to prepare biochar with pyrolysis temperatures of 300℃, 550℃ and 800℃ and phosphorus tailings addition ratios of 0.5%, 1% and 2%, respectively. The phosphorus tailings/sludge-based biochar with the best adsorption performance was determined by studying the adsorption of the phosphorus tailings/sludge-based biochar made under different conditions to a concentration of 100 mg/L methylene blue solution. The results of adsorption experiments, Boehm titration experiments and thermodynamic experiments showed that the phosphorus tailings/sludge biochar with a pyrolysis temperature of 800℃ had the best removal rate of methylene blue at a concentration of 100 mg/L when the phosphorus tailings addition ratio was the same, and its biochar with a phosphorus tailings addition ratio of 1% could remove up to 90% of methylene blue. The phenolic hydroxyl group was beneficial to the adsorption of methylene blue by phosphorus tailings/sludge biochar. The adsorption process of methylene blue by phosphorus tailings/sludge biochar was consistent with the Freundlich equation, indicating that the adsorption process belonged to multilayer adsorption.

Abstract 32 | PDF Downloads 15

References

  • [1] Zeng, Y.,Xu, Z.Dong, B.Enhanced Cu(2+) and Cd(2+) removal by a novel co-pyrolysis biochar derived from sewage sludge and phosphorus tailings: adsorption performance and mechaniss. Environ Geochem Health,2024,46(10):396.
  • [2] Nguyen, K. D.,Nguyen, K. H.,Ho, T. P. N., et al.Iron-rich textile sludge-derived biochar used for the removal of practical dye from wastewater. Biomass and Bioenergy,2026,204:108465.
  • [3] Mishra, V.,Mukherjee, P.,Bhattacharya, S., et al.Innovative sustainable solutions for detoxifying textile industry effluents using advanced oxidation and biological methods. Journal of Environmental Management,2025,380:124804.
  • [4] Parida, V. K.,Singh, N.,Priyadarshini, M., et al.Insights into the synthetic dye contamination in textile wastewater: Impacts on aquatic ecosystems and human health, and eco-friendly remediation strategies for environmental sustainability. Journal of Industrial and Engineering Chemistry,2025,150:247-264.
  • [5] Wu, Y.,Tan, Z.,Zhou, T., et al.Regulation mechanisms of biochar-derived endogenous substances on heavy metal mobility in the soil-crop system: A critical review. Environmental Research,2025,285:122557.
  • [6] Xiao, Y.,Yan, T.,Yao, P., et al.Co-pyrolysis of sewage sludge and phosphate tailings: Synergistically enhancing heavy metal immobilization and phosphorus availability. Waste Management,2024,181:44-56.
  • [7] Almojil, S. F.Almohana, A. I.Abatement of methylene blue and diazinon pesticide from synthetic solutions using magnetic biochar from pistachio shells modified with MOF-808. Environmental Research,2025,267:120542.
  • [8] Wang, T.,Yang, M.,Liang, J., et al.Magnetic biochar-facilitated azo dye degradation in bioelectrochemical system: Mechanistic insights from carbon metabolism, electron transfer, and molecular docking. Journal of Hazardous Materials,2025,499:140017.
  • [9] Pereira, R. C.,Arbestain, M. C.,Sueiro, M. V., et al.Assessment of the surface chemistry of wood-derived biochars using wet chemistry, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. 2015,53(7):753.
  • [10] Shoaib, A. G. M.,Yılmaz, M.,El Sikaily, A., et al.Isotherm, kinetics and ANN analysis of methylene blue adsorption onto nitrogen doped Ulva lactuca Biochar. Sci Rep,2025,15(1):10642.
  • [11] Duong, V.,Phuong, P.,Thuan, P., et al.A novel treatment of biogas digestate waste for biochar production and its adsorption of methylene blue and malachite green in a binary system. Biofuels, Bioproducts and Biorefining,2025,19:1728-1745.
  • [12] Elkatory, M. R.,Yılmaz, M.,Hassaan, M. A., et al.Fabrication of date palm kernel biochar-sulfur (DPKB-S) for super adsorption of methylene blue dye from water. Sci Rep,2024,14(1):6830.

Article Sidebar

PDF
Published
Mar 19, 2026
Issue
Vol. 3 No. 2 (2026)
Section
Research Articles
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Zhang, J., Feng, L.-J., Luo, J., & Li, W. (2026). Removal of Methylene Blue from Aqueous Solution by Phosphorus Tailings/Sludge-Derived Biochar. Environment, Social and Governance, 3(2), 1-6. https://doi.org/10.70267/esg2026.v3n2.0106