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Adsorption of Pb(II) on variable charge soils amended with rice-straw derived biochar
Abstract
Two Ultisols and one Oxisol from tropical regions of southern China were incubated with rice straw biochar to investigate the effect of biochar on their surface charge and Pb(II) adsorption using batch methods. The incorporation of biochar induced a remarkable increase in soil cation exchange capacity after 30 d of incubation. The incorporation of biochar significantly increased the adsorption of Pb(II) by these variable charge soils; the enhancement of adsorption of Pb(II) by these soils increased with the addition level of biochar. Adsorption of Pb(II) involved both electrostatic and non-electrostatic mechanisms; however, biochar mainly increased Pb(II) adsorption through the non-electrostatic mechanism via the formation of surface complexes between Pb(2+) and functional groups on biochar. There was greater enhancement of biochar on the non-electrostatic adsorption of Pb(II) by the variable charge soils at relatively low pH. Therefore, the incorporation of biochar decreased the activity and availability of Pb(II) to plants through increased non-electrostatic adsorption of Pb(II) by acidic variable charge soils.
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In the citing paper
“and the surface complexation of rice biochar increased the sorption capacity of soil to Pb(II) ions (Jiang etal. 2012).”
From Modified biochar: synthesis and mechanism for removal of environmental heavy metals (2022) · cites this paper as Jiang et al. 2012
In the citing paper
“3% and 5%(W/W) rice biochar were mixed with soil, and it was found that the amount of negative charge in soil increased with the addition of biochar,”
From Modified biochar: synthesis and mechanism for removal of environmental heavy metals (2022) · cites this paper as Jiang et al. 2012
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Metadata
- Authors
- Jiang, T.-Y., Jiang, J., Xu, R.-K., & Li, Z.
- Affiliations
- Nanjing Agricultural University (CN)
- Chinese Academy of Sciences (CN)
- Nanjing Forestry University (CN)
- Corresponding author
- Xu, Ren-Kou
- Venue
- Chemosphere
- Publisher
- Elsevier BV
- Published
- 2012-09
- Volume
- 89
- Issue
- 3
- Pages
- 249-256
- ISSN
- 0045-6535 (ISSN-L)
- OpenAlex
- W2064743010
- Cited by
- 352
- References
- 32
- Citations by year
- 2026: 9 · 2025: 14 · 2024: 20 · 2023: 26 · 2022: 31 · 2021: 38 · 2020: 39 · 2019: 37 · 2018: 34 · 2017: 20 · 2016: 24 · 2015: 30 · 2014: 18 · 2013: 11 · 2012: 1
- FWCI
- 15.84
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemosphere (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China
- Key Technologies Research and Development Program
- National Key Research and Development Program of China
- Topics
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
- Keywords
- lead adsorption, Pb2+, biochar, rice straw, variable charge soils, Ultisol, Oxisol, cation exchange capacity, surface complexation, electrostatic adsorption, soil amendment, heavy metal availability, pH effect
- MeSH terms
- Adsorption, Cations, Divalent, Charcoal, Hydrogen-Ion Concentration, Lead, Oryza, Soil, Soil Pollutants
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