Cited by 352Heavy metals in environmentAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterials

Adsorption of Pb(II) on variable charge soils amended with rice-straw derived biochar

Jiang, Tian-Yu, Jiang, Jun, Xu, Ren-Kou, Li, Zhuo·2012·Chemosphere

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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Crossref · 10.1016/j.chemosphere.2012.04.028

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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 › Engineering › Biomedical 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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