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Biochars mitigate greenhouse gas emissions and bioaccumulation of potentially toxic elements and arsenic speciation in Phaseolus vulgaris L.

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A Correction to this article was published on 24 October 2017

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Abstract

Anthropogenic and natural activities can lead to increased greenhouse gas emissions and discharge of potentially toxic elements (PTEs) into soil environment. Biochar amendment to soils is a cost-effective technology and sustainable approach used to mitigate greenhouse gas emissions, improve phytoremediation, and minimize the health risks associated with consumption of PTE-contaminated vegetables. Greenhouse pot experiments were conducted to investigate the effects of peanut shell biochar (PNB) and sewage sludge biochar (SSB) on greenhouse gas (GHG) emissions, plant growth, PTE bioaccumulation, and arsenic (As) speciation in bean plants. Results indicated that amendments of PNB and SSB increased plant biomass production by increasing soil fertility and reducing bioavailability of PTEs. Addition of biochars also increased soil pH, total nitrogen (TN), total carbon (TC), dissolved organic carbon (DOC), and ammonium-nitrogen (NH4-N) but decreased available concentrations of PTEs such as cadmium (Cd), lead (Pb), and As. The concentration of nitrate-nitrogen (NO3 -N) was also decreased in biochar-amended soils. In addition, PNB and SSB amendments significantly (P < 0.01) reduced the bioaccumulation of chromium (Cr), As, Cd, Pb, and nickel (Ni) in stalks, leaves, and fruits of Phaseolus vulgaris L. Similarly, PNB and SSB amendments significantly (P ≤ 0.05) reduced inorganic As species like arsenite (As (III)) and arsenate (As (V)). Greenhouse gases such as carbon dioxide (CO2) and methane (CH4) emissions were significantly (P < 0.01) reduced but nitrous oxide (N2O) emissions first increased and then decreased amended with both biochars. Current findings demonstrate that SSB and PNB are two beneficial soil amendments simultaneous mitigating greenhouse gas emissions and PTE bioaccumulation as well as arsenic speciation in P. vulgaris L.

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  • 24 October 2017

    The original version of this article unfortunately contained a mistake. One affiliation and one author were missing. The corrected affiliations and authors are given here.

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Acknowledgements

This study was financially supported by the National Scientific Foundation of China (Grant Nos. 41501519 and 41571130063), the Chinese Academy of Sciences under the CAS President’s International Fellowship Initiative (PIFI, Grant No. 2015VEB055), and grant from the Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, China. We acknowledge Mr. Collins Amoah-Antwi for critically revising the English language for this manuscript.

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A correction to this article is available online at https://doi.org/10.1007/s11356-017-0478-0.

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Ibrahim, M., Li, G., Khan, S. et al. Biochars mitigate greenhouse gas emissions and bioaccumulation of potentially toxic elements and arsenic speciation in Phaseolus vulgaris L.. Environ Sci Pollut Res 24, 19524–19534 (2017). https://doi.org/10.1007/s11356-017-9605-1

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