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Goethite-modified biochar restricts the mobility and transfer of cadmium in soil-rice system.
Chemosphere. 2020 Mar; 242:125152.C

Abstract

Cadmium (Cd) contamination of paddy soils has raised serious concerns for food safety and security. Remediation and management of Cd contaminated soil with biochar (BC) and modified biochar is a cost-effective method and has gained due attention in recent years. Goethite-modified biochar (GB) can combine the beneficial effects of BC and iron (Fe) for remediation of Cd contaminated soil. We probed the impact of different BC and GB amendments on Cd mobility and transfer in the soil-rice system. Both BC and GB effectively reduced Cd mobility and availability in the rhizosphere and improved the key growth attributes of rice. Although BC supply to rice plants enhanced their performance in contaminated soil but application of 1.5% GB to the soil resulted in prominent improvements in physiological and biochemical attributes of rice plants grown in Cd contaminated soil. Sequential extraction results depicted that BC and GB differentially enhanced the conversion of exchangeable Cd fractions to non-exchangeable Cd fractions thus restricted the Cd mobility and transfer in soil. Furthermore, supplementing the soil with 1.5% GB incremented the formation of iron plaque (Fe plaque) and boosted the Cd sequestration by Fe plaque. Increase in shoot and root biomass of rice plants after GB treatments positively correlates with incremented chlorophyll contents and gas exchange attributes. Additionally, the oxidative stress damage in rice plants was comparatively reduced under GB application. These findings demonstrate that amending the soil with 1.5% GB can be a potential remediation method to minimize Cd accumulation in paddy rice and thereby can protect human beings from Cd exposure.

Authors+Show Affiliations

College of Resource and Environmental Science, China Agricultural University Beijing, PR China; Department of Environmental Sciences and Engineering, Government College University Faisalabad, Pakistan.College of Resource and Environmental Science, China Agricultural University Beijing, PR China.Department of Botany, Government College University Faisalabad, Pakistan.Department of Environmental Sciences and Engineering, Government College University Faisalabad, Pakistan.College of Resource and Environmental Science, China Agricultural University Beijing, PR China.College of Resource and Environmental Science, China Agricultural University Beijing, PR China. Electronic address: jyshang@cau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31669984

Citation

Kashif Irshad, Muhammad, et al. "Goethite-modified Biochar Restricts the Mobility and Transfer of Cadmium in Soil-rice System." Chemosphere, vol. 242, 2020, p. 125152.
Kashif Irshad M, Chen C, Noman A, et al. Goethite-modified biochar restricts the mobility and transfer of cadmium in soil-rice system. Chemosphere. 2020;242:125152.
Kashif Irshad, M., Chen, C., Noman, A., Ibrahim, M., Adeel, M., & Shang, J. (2020). Goethite-modified biochar restricts the mobility and transfer of cadmium in soil-rice system. Chemosphere, 242, 125152. https://doi.org/10.1016/j.chemosphere.2019.125152
Kashif Irshad M, et al. Goethite-modified Biochar Restricts the Mobility and Transfer of Cadmium in Soil-rice System. Chemosphere. 2020;242:125152. PubMed PMID: 31669984.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Goethite-modified biochar restricts the mobility and transfer of cadmium in soil-rice system. AU - Kashif Irshad,Muhammad, AU - Chen,Chong, AU - Noman,Ali, AU - Ibrahim,Muhammad, AU - Adeel,Muhammad, AU - Shang,Jianying, Y1 - 2019/10/21/ PY - 2019/06/19/received PY - 2019/09/10/revised PY - 2019/10/18/accepted PY - 2019/11/2/pubmed PY - 2020/3/7/medline PY - 2019/11/1/entrez KW - Heavy metals KW - Iron plaque KW - Pollution KW - Remediation KW - Rice plants SP - 125152 EP - 125152 JF - Chemosphere JO - Chemosphere VL - 242 N2 - Cadmium (Cd) contamination of paddy soils has raised serious concerns for food safety and security. Remediation and management of Cd contaminated soil with biochar (BC) and modified biochar is a cost-effective method and has gained due attention in recent years. Goethite-modified biochar (GB) can combine the beneficial effects of BC and iron (Fe) for remediation of Cd contaminated soil. We probed the impact of different BC and GB amendments on Cd mobility and transfer in the soil-rice system. Both BC and GB effectively reduced Cd mobility and availability in the rhizosphere and improved the key growth attributes of rice. Although BC supply to rice plants enhanced their performance in contaminated soil but application of 1.5% GB to the soil resulted in prominent improvements in physiological and biochemical attributes of rice plants grown in Cd contaminated soil. Sequential extraction results depicted that BC and GB differentially enhanced the conversion of exchangeable Cd fractions to non-exchangeable Cd fractions thus restricted the Cd mobility and transfer in soil. Furthermore, supplementing the soil with 1.5% GB incremented the formation of iron plaque (Fe plaque) and boosted the Cd sequestration by Fe plaque. Increase in shoot and root biomass of rice plants after GB treatments positively correlates with incremented chlorophyll contents and gas exchange attributes. Additionally, the oxidative stress damage in rice plants was comparatively reduced under GB application. These findings demonstrate that amending the soil with 1.5% GB can be a potential remediation method to minimize Cd accumulation in paddy rice and thereby can protect human beings from Cd exposure. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/31669984/Goethite_modified_biochar_restricts_the_mobility_and_transfer_of_cadmium_in_soil_rice_system_ DB - PRIME DP - Unbound Medicine ER -