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Effect of biochar and Fe-biochar on Cd and As mobility and transfer in soil-rice system.
Chemosphere. 2017 Nov; 186:928-937.C

Abstract

In this study, the effects of biochar derived from rice-straw (biochar) and iron-impregnated biochar (Fe-biochar) on Cd and As mobility in rice rhizosphere and transfer from soil to rice were investigated with different application rates. 1-3% biochar reduced porewater Cd in rhizosphere but elevated soluble As, resulting in 49-68% and 26-49% reduction in the root and grain Cd, with a simultaneous increase in root As. Unlike biochar, 0.5% Fe-biochar decreased porewater As throughout rice growth, resulting in reduced root As, which, however, increased Cd uptake by root. Biochar-induced soil As mobilization was probably through competitive desorption and Fe-biochar-induced soil Cd mobilization was probably via soil acidification. The results suggested that biochar and Fe-biochar was effective in reducing Cd and As uptake by rice, respectively, so they may be used as emergency measures to cope with single Cd or As contamination in paddy soils.

Authors+Show Affiliations

College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan 410081, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China.College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan 410081, China. Electronic address: hdhuanjing@163.com.College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan 410081, China.College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan 410081, China.State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28830065

Citation

Yin, Daixia, et al. "Effect of Biochar and Fe-biochar On Cd and as Mobility and Transfer in Soil-rice System." Chemosphere, vol. 186, 2017, pp. 928-937.
Yin D, Wang X, Peng B, et al. Effect of biochar and Fe-biochar on Cd and As mobility and transfer in soil-rice system. Chemosphere. 2017;186:928-937.
Yin, D., Wang, X., Peng, B., Tan, C., & Ma, L. Q. (2017). Effect of biochar and Fe-biochar on Cd and As mobility and transfer in soil-rice system. Chemosphere, 186, 928-937. https://doi.org/10.1016/j.chemosphere.2017.07.126
Yin D, et al. Effect of Biochar and Fe-biochar On Cd and as Mobility and Transfer in Soil-rice System. Chemosphere. 2017;186:928-937. PubMed PMID: 28830065.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of biochar and Fe-biochar on Cd and As mobility and transfer in soil-rice system. AU - Yin,Daixia, AU - Wang,Xin, AU - Peng,Bo, AU - Tan,Changyin, AU - Ma,Lena Q, Y1 - 2017/07/26/ PY - 2017/05/02/received PY - 2017/07/12/revised PY - 2017/07/25/accepted PY - 2017/8/24/pubmed PY - 2018/1/3/medline PY - 2017/8/24/entrez KW - Arsenic KW - Biochar KW - Cadmium KW - Iron-impregnated biochar KW - Paddy soils KW - Rice grains SP - 928 EP - 937 JF - Chemosphere JO - Chemosphere VL - 186 N2 - In this study, the effects of biochar derived from rice-straw (biochar) and iron-impregnated biochar (Fe-biochar) on Cd and As mobility in rice rhizosphere and transfer from soil to rice were investigated with different application rates. 1-3% biochar reduced porewater Cd in rhizosphere but elevated soluble As, resulting in 49-68% and 26-49% reduction in the root and grain Cd, with a simultaneous increase in root As. Unlike biochar, 0.5% Fe-biochar decreased porewater As throughout rice growth, resulting in reduced root As, which, however, increased Cd uptake by root. Biochar-induced soil As mobilization was probably through competitive desorption and Fe-biochar-induced soil Cd mobilization was probably via soil acidification. The results suggested that biochar and Fe-biochar was effective in reducing Cd and As uptake by rice, respectively, so they may be used as emergency measures to cope with single Cd or As contamination in paddy soils. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/28830065/Effect_of_biochar_and_Fe_biochar_on_Cd_and_As_mobility_and_transfer_in_soil_rice_system_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(17)31177-3 DB - PRIME DP - Unbound Medicine ER -