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Simultaneous alleviation of Cd availability in contaminated soil and accumulation in rice (Oryza sativa L.) by Fe-Mn oxide-modified biochar.
Sci Total Environ. 2023 Feb 01; 858(Pt 1):159730.ST

Abstract

Fe-Mn oxide-modified biochar (BC-FM) was used to remediate Cd-contaminated soil and mitigate Cd accumulation in rice. The roles of Fe and Mn in soil Cd immobilization and in controlling Cd uptake by rice were investigated via X-ray photoelectron spectroscopy (XPS) characterization and chemical analysis. Fe and Mn loaded on BC-FM increased the removal efficiencies of CaCl2 extractable Cd in soil and Cd in pore water compared to those in only biochar (BC)-treated soil, with maximum removal rates at 67.9 % and 77.8 %, respectively. The XPS results indicated that the redox reactions of the Fe-Mn oxides on BC-FM surface affected Cd immobilization in the soil. The Fe (II/III) components on BC-FM were primarily converted to Fe3O4 in the soil system, which may form stable complexes with Cd2+ (Fe-O-Cd) during the entire rice growth period, and Cd may be bound to MnO or Mn2O3 in the form of CdMn2O4. The excellent adsorption performance of BC-FM enhanced by Fe-Mn oxides reduced the available Cd in the soil and stimulated Fe and Mn transport in rice, thereby inhibiting Cd accumulation in the aerial parts of rice. Cd concentrations in brown rice under BC-FM treatments reached the national safety standard (0.2 mg/kg, GB2762-2017). And BC-FM significantly increased the biomass of brown rice with a maximum rate of 26.8 %. These findings suggest that BC-FM could be used as an efficient material for Cd-contaminated soil remediation, and Fe-Mn plays important role in immobilizing Cd in soil and reducing Cd transport in rice.

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Authors+Show Affiliations

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China. Electronic address: zhouhang4607@163.com.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China.

College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China.

MeSH

OryzaCadmiumSoil PollutantsOxidesCharcoalSoilOrganic Chemicals

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36306853

Citation

Tan, Wen-Tao, et al. "Simultaneous Alleviation of Cd Availability in Contaminated Soil and Accumulation in Rice (Oryza Sativa L.) By Fe-Mn Oxide-modified Biochar." The Science of the Total Environment, vol. 858, no. Pt 1, 2023, p. 159730.

Tan WT, Zhou H, Tang SF, et al. Simultaneous alleviation of Cd availability in contaminated soil and accumulation in rice (Oryza sativa L.) by Fe-Mn oxide-modified biochar. Sci Total Environ. 2023;858(Pt 1):159730.

Tan, W. T., Zhou, H., Tang, S. F., Chen, Q., Zhou, X., Liu, X. H., Zeng, P., Gu, J. F., & Liao, B. H. (2023). Simultaneous alleviation of Cd availability in contaminated soil and accumulation in rice (Oryza sativa L.) by Fe-Mn oxide-modified biochar. The Science of the Total Environment, 858(Pt 1), 159730. https://doi.org/10.1016/j.scitotenv.2022.159730

Tan WT, et al. Simultaneous Alleviation of Cd Availability in Contaminated Soil and Accumulation in Rice (Oryza Sativa L.) By Fe-Mn Oxide-modified Biochar. Sci Total Environ. 2023 Feb 1;858(Pt 1):159730. PubMed PMID: 36306853.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Simultaneous alleviation of Cd availability in contaminated soil and accumulation in rice (Oryza sativa L.) by Fe-Mn oxide-modified biochar. AU - Tan,Wen-Tao, AU - Zhou,Hang, AU - Tang,Shang-Feng, AU - Chen,Qiong, AU - Zhou,Xia, AU - Liu,Xin-Hui, AU - Zeng,Peng, AU - Gu,Jiao-Feng, AU - Liao,Bo-Han, Y1 - 2022/10/25/ PY - 2022/08/24/received PY - 2022/10/20/revised PY - 2022/10/22/accepted PY - 2022/10/29/pubmed PY - 2022/12/3/medline PY - 2022/10/28/entrez KW - Biochar KW - Cadmium transport KW - Immobilization mechanisms KW - Iron plaque KW - Rice SP - 159730 EP - 159730 JF - The Science of the total environment JO - Sci Total Environ VL - 858 IS - Pt 1 N2 - Fe-Mn oxide-modified biochar (BC-FM) was used to remediate Cd-contaminated soil and mitigate Cd accumulation in rice. The roles of Fe and Mn in soil Cd immobilization and in controlling Cd uptake by rice were investigated via X-ray photoelectron spectroscopy (XPS) characterization and chemical analysis. Fe and Mn loaded on BC-FM increased the removal efficiencies of CaCl2 extractable Cd in soil and Cd in pore water compared to those in only biochar (BC)-treated soil, with maximum removal rates at 67.9 % and 77.8 %, respectively. The XPS results indicated that the redox reactions of the Fe-Mn oxides on BC-FM surface affected Cd immobilization in the soil. The Fe (II/III) components on BC-FM were primarily converted to Fe3O4 in the soil system, which may form stable complexes with Cd2+ (Fe-O-Cd) during the entire rice growth period, and Cd may be bound to MnO or Mn2O3 in the form of CdMn2O4. The excellent adsorption performance of BC-FM enhanced by Fe-Mn oxides reduced the available Cd in the soil and stimulated Fe and Mn transport in rice, thereby inhibiting Cd accumulation in the aerial parts of rice. Cd concentrations in brown rice under BC-FM treatments reached the national safety standard (0.2 mg/kg, GB2762-2017). And BC-FM significantly increased the biomass of brown rice with a maximum rate of 26.8 %. These findings suggest that BC-FM could be used as an efficient material for Cd-contaminated soil remediation, and Fe-Mn plays important role in immobilizing Cd in soil and reducing Cd transport in rice. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/36306853/Simultaneous_alleviation_of_Cd_availability_in_contaminated_soil_and_accumulation_in_rice__Oryza_sativa_L___by_Fe_Mn_oxide_modified_biochar_ DB - PRIME DP - Unbound Medicine ER -