Effect of biochar from peanut shell on speciation and availability of lead and zinc in an acidic paddy soil
| Autor: | Zhang Yang-zhu, Huang DaoYou, Xu Chao, Xiang Qian, Zhu Hanhua, Wang Shuai, Zhu Qi-hong |
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| Rok vydání: | 2018 |
| Předmět: |
Arachis
Health Toxicology and Mutagenesis media_common.quotation_subject 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology Zinc 010501 environmental sciences 01 natural sciences Soil Soil pH Biochar Dissolved organic carbon Cation-exchange capacity Soil Pollutants 0105 earth and related environmental sciences media_common 021110 strategic defence & security studies Oryza sativa Public Health Environmental and Occupational Health Oryza General Medicine Pollution Indicator plant Speciation Lead chemistry Charcoal Environmental chemistry Environmental Pollution |
| Zdroj: | Ecotoxicology and Environmental Safety. 164:554-561 |
| ISSN: | 0147-6513 |
| DOI: | 10.1016/j.ecoenv.2018.08.057 |
| Popis: | Biochar has been used to reduce the mobility and availability of heavy metals in contaminated paddy soils. A pot experiment was carried out to analyze the effects of peanut shell biochar (PBC) on the speciation and phytoavailability of Pb and Zn in contaminated acidic paddy soil using rice (Oryza sativa L.) as an indicator plant. Peanut shell biochar was applied to an acidic paddy soil contaminated with Pb and Zn at four rates (0%, 1%, 2%, and 5% w/w), and rice plants were grown in this soil. The soil pH, cation exchange capacity (CEC), water-soluble SO42–, dissolved organic carbon (DOC), CaCl2-extractable heavy metals, and speciation of heavy metals were determined. Additionally, biomass and concentrations of heavy metals in rice tissues were determined. The application of PBC significantly increased the pH, CEC, water-soluble SO42–, and DOC in the paddy soil, but decreased the content of CaCl2-extractable Pb and Zn. The CaCl2-extractable Pb and Zn showed significant negative correlations with the pH, CEC, water-soluble SO42–, and DOC (p |
| Databáze: | OpenAIRE |
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