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Hybrid ash/biochar biocomposites as soil amendments for the alleviation of cadmium accumulation by Oryza sativa L. in a contaminated paddy field.
Chemosphere. 2020 Jan; 239:124805.C

Abstract

A novel ash/biochar (A/B) biocomposite composed of 90% biomass bottom ash from agroforestry biomass direct-fired power plants, 5% animal-derived biochar from carcass pyrolysis, and 5% bentonite as an adhesive was amended in cadmium (Cd)-polluted paddy soil to alleviate cadmium accumulation by Oryza sativa L. Ash increased the soil pH and contributed exogenous available silicon. Biochar with high Ca/P components played an important role in soil cadmium immobilization. A 1-year field experiment with consecutive rice growing seasons (early and late rice) was conducted in Xiangtan, China, to examine the effects of A/B amendment in Cd-contaminated paddy soil. The A/B biocomposite was amended into soil through one-time addition at three application rates (1, 5, and 10 kg/m2). When A/B amendment was ≥5 kg/m2, the soil pH increased from 4.11 to more than 6. The available silicon content in the soil even increased by 22.9 times. For early rice soil, the CaCl2-extractable Cd(II) and toxicity characteristic leaching procedure (TCLP)-extractable Cd(II) decreased by 77.9%-96.1% and 52.4%-70.7%, respectively. A/B remarkably reduced Cd accumulation in rice organs, and this observation was related to A/B treatment rates. Ash and biochar contributed to the inhibition of Cd accumulation in rice organs and Cd translocation from roots to stems. The Cd concentrations in brown rice decreased to 0.11 and 0.12 mg/kg in early and late rice, respectively, and these values were lower than the national food safety standard limit value of China (0.2 mg/kg).

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Authors+Show Affiliations

Lei S
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security; Center for Risk Management and Restoration of Soil and Groundwater, Tongji University, Shanghai, 200092, China.
Shi Y
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security; Center for Risk Management and Restoration of Soil and Groundwater, Tongji University, Shanghai, 200092, China.
Xue C
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security; Center for Risk Management and Restoration of Soil and Groundwater, Tongji University, Shanghai, 200092, China.
Wang J
College of the Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
Che L
School of Engineering, Huzhou University, Huzhou, 313000, China.
Qiu Y
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security; Center for Risk Management and Restoration of Soil and Groundwater, Tongji University, Shanghai, 200092, China. Electronic address: ypqiu@tongji.edu.cn.

MeSH

CadmiumCharcoalChinaCoal AshOryzaSeasonsSoilSoil Pollutants

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31520974

Citation

Lei, Sicong, et al. "Hybrid Ash/biochar Biocomposites as Soil Amendments for the Alleviation of Cadmium Accumulation By Oryza Sativa L. in a Contaminated Paddy Field." Chemosphere, vol. 239, 2020, p. 124805.
Lei S, Shi Y, Xue C, et al. Hybrid ash/biochar biocomposites as soil amendments for the alleviation of cadmium accumulation by Oryza sativa L. in a contaminated paddy field. Chemosphere. 2020;239:124805.
Lei, S., Shi, Y., Xue, C., Wang, J., Che, L., & Qiu, Y. (2020). Hybrid ash/biochar biocomposites as soil amendments for the alleviation of cadmium accumulation by Oryza sativa L. in a contaminated paddy field. Chemosphere, 239, 124805. https://doi.org/10.1016/j.chemosphere.2019.124805
Lei S, et al. Hybrid Ash/biochar Biocomposites as Soil Amendments for the Alleviation of Cadmium Accumulation By Oryza Sativa L. in a Contaminated Paddy Field. Chemosphere. 2020;239:124805. PubMed PMID: 31520974.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hybrid ash/biochar biocomposites as soil amendments for the alleviation of cadmium accumulation by Oryza sativa L. in a contaminated paddy field. AU - Lei,Sicong, AU - Shi,Yan, AU - Xue,Cong, AU - Wang,Junliang, AU - Che,Lei, AU - Qiu,Yuping, Y1 - 2019/09/07/ PY - 2019/04/27/received PY - 2019/09/01/revised PY - 2019/09/06/accepted PY - 2019/9/15/pubmed PY - 2020/1/29/medline PY - 2019/9/15/entrez KW - Animal-derived biochar KW - Biomass bottom ash KW - Cadmium KW - Rice KW - Soil remediation SP - 124805 EP - 124805 JF - Chemosphere JO - Chemosphere VL - 239 N2 - A novel ash/biochar (A/B) biocomposite composed of 90% biomass bottom ash from agroforestry biomass direct-fired power plants, 5% animal-derived biochar from carcass pyrolysis, and 5% bentonite as an adhesive was amended in cadmium (Cd)-polluted paddy soil to alleviate cadmium accumulation by Oryza sativa L. Ash increased the soil pH and contributed exogenous available silicon. Biochar with high Ca/P components played an important role in soil cadmium immobilization. A 1-year field experiment with consecutive rice growing seasons (early and late rice) was conducted in Xiangtan, China, to examine the effects of A/B amendment in Cd-contaminated paddy soil. The A/B biocomposite was amended into soil through one-time addition at three application rates (1, 5, and 10 kg/m2). When A/B amendment was ≥5 kg/m2, the soil pH increased from 4.11 to more than 6. The available silicon content in the soil even increased by 22.9 times. For early rice soil, the CaCl2-extractable Cd(II) and toxicity characteristic leaching procedure (TCLP)-extractable Cd(II) decreased by 77.9%-96.1% and 52.4%-70.7%, respectively. A/B remarkably reduced Cd accumulation in rice organs, and this observation was related to A/B treatment rates. Ash and biochar contributed to the inhibition of Cd accumulation in rice organs and Cd translocation from roots to stems. The Cd concentrations in brown rice decreased to 0.11 and 0.12 mg/kg in early and late rice, respectively, and these values were lower than the national food safety standard limit value of China (0.2 mg/kg). SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/31520974/Hybrid_ash/biochar_biocomposites_as_soil_amendments_for_the_alleviation_of_cadmium_accumulation_by_Oryza_sativa_L__in_a_contaminated_paddy_field_ DB - PRIME DP - Unbound Medicine ER -