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author:

Z. Ajmal (Z. Ajmal.) [1] | M. Kashif Irshad (M. Kashif Irshad.) [2] | A. Qadeer (A. Qadeer.) [3] | M. Zia Ul Haq (M. Zia Ul Haq.) [4] | R. Ullah (R. Ullah.) [5] | M. Aqeel Sarwar (M. Aqeel Sarwar.) [6] | T. Saeed (T. Saeed.) [7] | M. Abid (M. Abid.) [8] | A. Hayat (A. Hayat.) [9] | A. Ali (A. Ali.) [10] | A. Noman (A. Noman.) [11] | R. Dong (R. Dong.) [12]

Abstract:

Environment-friendly and cost-effective remediation strategies are highly needed to reclaim the lead (Pb) contaminated soils. The present study evaluated the efficacy of novel magnetic wood-modified biochar (MWB) and pristine wood biochar (WB) at different application rates (0.5–1.75%) for remediation of Pb-contaminated soil. Both MWB and WB amendments effectively reduced the transfer and bioavailability of Pb in the soil. MWB (1.75%) amendment remarkably influenced rice plant growth in terms of improved biochemical and physiological attributes. The amendment of Pb-contaminated soil with MWB also proved beneficial in reducing oxidative stress in rice plants. A significant increase in root iron plaque (Fe-plaque) formation was also observed with 1.75% MWB treatment. The sequential extraction results demonstrated the increased transformation of exchangeable Pb fractions to non-exchangeable Pb fractions. Application of 1.75% MWB reduced the Pb content in roots and shoots by 48.6% and 60.2%, respectively. Present findings clearly validated the usefulness of MWB as a cost-effective remediation strategy for Pb-contaminated soil.

Keyword:

Antioxidants Fe-plaques Lead remediation Magnetic biochar Rice growth

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Source :

International Journal of Environmental Science and Technology

ISSN: 1735-1472

Year: 2022

Issue: 7

Volume: 20

Page: 7543-7558

3 . 1

JCR@2022

3 . 0 0 0

JCR@2023

JCR Journal Grade:3

CAS Journal Grade:4

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SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 1

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