Cited by 104Heavy metals in environmentAdsorption and biosorption for pollutant removalArsenic contamination and mitigation

Biochar amendment immobilizes lead in rice paddy soils and reduces its phytoavailability

Open access
Li, Honghong, Liu, Yuting, Chen, Yanhui, Wang, Shanli, Wang, Mingkuang, Xie, Tuanhui, Wang, Guo·2016·Scientific Reports

Abstract

This study aimed to determine effects of rice straw biochar on Pb sequestration in a soil-rice system. Pot experiments were conducted with rice plants in Pb-contaminated paddy soils that had been amended with 0, 2.5, and 5% (w/w) biochar. Compared to the control treatment, amendment with 5% biochar resulted in 54 and 94% decreases in the acid soluble and CaCl 2 -extractable Pb, respectively, in soils containing rice plants at the maturity stage. The amount of Fe-plaque on root surfaces and the Pb concentrations of the Fe-plaque were also reduced in biochar amended soils. Furthermore, lead species in rice roots were determined using Pb L 3 -edge X-ray absorption near edge structure (XANES), and although Pb-ferrihydrite complexes dominated Pb inventories, increasing amounts of organic complexes like Pb-pectins and Pb-cysteine were found in roots from the 5% biochar treatments. Such organic complexes might impede Pb translocation from root to shoot and subsequently reduce Pb accumulation in rice with biochar amendment.

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  • Both biochar media were 5% by weight in all cases, which is a common amendment ratio found in the literature.

    “Both biochar media were 5% by weight in all cases, which is a common amendment ratio found in the literature [43,44].”

    From Application of Biochar in Stormwater Treatment: Experimental and Modeling Investigation (2021) · cites this paper as [43]

    The Methods (Growth conditions and seed treatment) show that this paper used a 5% by-weight biochar amendment, alongside 0% and 2.5% treatments. That supports 5% as an example of a ratio used in the literature, but the paper does not establish that it is a common ratio. (LLM, conf=0.84)

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Research works printed but not linked: 1

  1. Al Attar L., Al-Oudat M., Safia B. & Ghani B. A. Transfer factor of 90Sr and 137Cs to lettuce and winter wheat at different growth stage applications. Journal of Environmental Radioactivity 150, 104– 110 (2015). 26318772

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Authors
Li, H., Liu, Y., Chen, Y., Wang, S., Wang, M., Xie, T., & Wang, G.
Affiliations
Fujian Agriculture and Forestry University (CN)
Corresponding author
Wang, Guo
Venue
Scientific Reports
Published
2016-08-17
Volume
6
Issue
1
Pages
31616-31616
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2509591210
Cited by
104
References
37
Citations by year
2026: 4 · 2025: 4 · 2024: 7 · 2023: 18 · 2022: 10 · 2021: 13 · 2020: 20 · 2019: 14 · 2018: 9 · 2017: 4
FWCI
4.92
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (U1305232, 41301576)
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 Chemistry › Arsenic contamination and mitigation
Keywords
biochar amendment, rice straw biochar, lead immobilization, paddy soil, lead-contaminated soil, lead sequestration
MeSH terms
Biological Availability, Charcoal, Iron, Lead, Oryza, Soil

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