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Co-application of Biochar and Titanium Dioxide Nanoparticles to Promote Remediation of Antimony from Soil by : Metal Uptake and Plant Response

Overview
Journal Heliyon
Specialty Social Sciences
Date 2020 Aug 18
PMID 32802987
Citations 5
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Abstract

Association of titanium dioxide nanoparticles (TiO NPs) and biochar (BC) to assist phytoremediation of Sb contaminated soil was investigated in this study. Seedlings of were exposed to different regimes of TiO NPs (0, 100, 250 and 500 mg kg) and BC (0, 2.5% and 5%), separately and in combination, to investigate the effects on plant growth, Sb absorption and accumulation and physiological response of the plant in Sb contaminated soil. Co-application of TiO NPs and BC had positive effects on plant establishment and growth in contaminated soil. Greater accumulation of Sb in the shoots compared to the roots of was observed in all treatments. Application of BC increased immobilization of Sb in the soil. Using TiO NPs significantly increased accumulation capacity of for Sb with the greatest accumulation capacity of 1624.1 μg per pot achieved in "250 mg kg TiO NPs+2.5% BC" treatment (P < 0.05). Association of TiO NPs and BC significantly increased chlorophyll (Chl ) and chlorophyll (Chl ) contents of compared to the TiO NPs-amended treatments. Results of this study presented a promising novel technique by combined application of TiO NPs and BC in phytoremediation of Sb contaminated soils. Co-application of TiO NPs and BC could reduce the required amounts of TiO NPs for successful phytoremediation of heavy metal polluted soils. Intelligent uses of plants in accompany with biochar and nanomaterials have great application prospects in dealing with soil remediation.

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