Study on adsorption of lead by biochar prepared from sludge of municipal wastewater treatment plant
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In general, with the increase of pyrolysis temperature, the adsorption effect of the prepared biochar to Pb 2+ is better.Under the same experimental conditions at 25°C, the adsorption capacity of biochar prepared by pyrolysis of sludge at 600°C was highest which was 611.8 mg/g. The adsorption kinetics of Pb 2+ in solution by BC600 is better fitted to the first order kinetic equation. With the increase of pH value of solution, the adsorption capacity of lead increased from 441.3 mg/g to 650.6 mg/g.
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The SS-PFS cycle advantage may be related to the ability of sulfate ions derived from PFS to retain part of the nitrogen in the sludge and to form thermally stable salts with metal ions.
“This advantage may be related to the ability of sulfate ions derived from PFS to retain part of the nitrogen in the sludge and to form thermally stable salts with metal ions, 24 as verified by the dense lamellar structure observed in the SEM image of the SS-PFS cycle.”
From Comparative study on the CO2 capture performance of sludge pyrolysis biochar prepared with different inorganic dehydrating conditioners (2026) · cites this paper as [24]
The Preparation of sludge Biochar (section 2.1) describes pyrolysis under nitrogen gas, while the SEM section (3.1) describes surface changes at different temperatures. Neither addresses PFS-derived sulfate ions, nitrogen retention in sludge, or thermally stable salts with metal ions (searched: PFS, sulfate, nitrogen retention, thermally stable salts). (LLM, conf=0.77)
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Cites
Ronsse, F., van Hecke, S., Dickinson, D., & Prins, W. (2013) · GCB Bioenergy · doi:10.1111/gcbb.12018 · Cited by 1,000 · see citing works
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Research works printed but not linked: 3
- Tran H N, You S J, Hosseinibandegharaei A, et al 2017 Mistakes and inconsistencies regarding adsorption of contaminants from aqueous solutions: A critical review Water Research 120(1) 88-116
- Han Y, Boateng A A, Qi P X, et al 2013 Heavy metal and phenol adsorptive properties of biochars from pyrolyzed switchgrass and woody biomass in correlation with surface properties Journal of Environmental Management 118(2) 196-204
- Yang H, Xu R, Xue X, et al 2008 Hybrid surfactant-templated mesoporous silica formed in ethanol and its application for heavy metal removal Journal of Hazardous Materials 152(2) 690-698
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Huang, Y., Zhang, Y., Dong, R., Fang, J., Li, Y., Yang, Y., Tang, T., & Deng, J. (2026) · Asian Journal of Water, Environment and Pollution · doi:10.36922/ajwep026120081
Self-citation
- Authors
- Lei, W., Li, T. T., Lv, N. Q., Liu, H., Zhang, Y., & Xi, B. D.
- Affiliations
- Chinese Research Academy of Environmental Sciences (CN)
- ORCID
- Liu, H
- Venue
- IOP Conference Series: Materials Science and Engineering
- Publisher
- IOP Publishing
- Published
- 2019-03-08
- Volume
- 479
- Pages
- 012007
- ISSN
- 1757-8981 (ISSN-L)
- 1757-899X
- OpenAlex
- W2921887832
- Cited by
- 3
- References
- 1
- Citations by year
- 2024: 1 · 2023: 1 · 2021: 1
- FWCI
- 0.83
- Type
- conference paper
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- IOP Conference Series Materials Science and Engineering (publishedVersion, cc-by)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
- Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
- Keywords
- lead adsorption, biochar, sewage sludge, pyrolysis temperature, adsorption kinetics, first-order kinetic model, pH effect, heavy metal removal, sludge valorization
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