Date palm-magnetized biochar for
            <i>in-situ</i>
            stabilization of toxic metals in mining-polluted soil: evaluation using single-step extraction methods and phytoavailability

Alazzaz, Azzaz; Rafique, Muhammad Imran; Al-Swadi, Hamed A.; Ahmad, Munir; Alsewaileh, Abdulaziz S.; Usman, Adel R.A.; Al-Wabel, Mohammad I.; Al-Farraj, Abdullah S.

doi:10.1080/15226514.2023.2187633

Cited by 4 publications

(2 citation statements)

References 56 publications

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“…Remediation of Cs-contaminated soils is therefore an obligation to ensure environmental safety [28][29]. This can be conducted via different techniques, such as bioremediation, thermal desorption electrokinetic remediation and soil leaching [30].Chemical washing represents a good candidate for remediation of contaminants from soil via either acids (HNO 3 , HCl, H 3 PO 4 and H 2 SO 4 ) [31] or synthetic chelators [32].For example,the cationic surfactant(dodecyltrimethylammonium bromide (DTAB) released sorbedcesium (up to 97%),in which ammonium ions substitute Cs within the interlayers of clay minerals [33].Maybe, the usage of biodegradable components like NTA, EDDS, EDDG, EDDM, HIDS and PDA could besafer; yet still all of these agents exhibit relatively lower efficienciesin extraction of contaminants from soil versus EDTA-Na and DTPA [34] whose low molecular weights increase their efficiency to form strong complexes with Cs [35][36]. The current study aims at evaluating the efficiencies of both EDTA-Na and DTPA in washing Cs out of soils of different characters and varying contents of Cs (50, 100 and 200 mg Cs kg -1 )in relation to the risk assessment of cesium.…”

Section: Introductionmentioning

confidence: 99%

Removal of cesium from contaminated soils using EDTA-Na and DTPAchelating agents

Elshazly

Farid

Rizk

et al. 2023

Benha Journal of Applied Sciences

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Soil contamination with Cs possesses a serious environmental threat; and therefore, its remediation is an obligation to ensure environmental safety. The current study aims at evaluating the efficiency of using either EDTA-Na or DTPA as chelating agents for removal of Cs from contaminated soils. Three soils (a clayey oneand two sandy loam soils differing in the organic matter and CaCO 3 contents) were selected to attain this aim.Samples of the soils under study were artificially contaminated with CsCl at three levels i.e. 50, 100, and 200 mg Cs kg -1 . These samples were subjected to sequential extraction pre-and post-leaching to find out Cs redistribution among the different soil fractions after soil washing. The implications of soil washing with the investigated chelating agents on decreasing the risk assessment hazards associated with Cs hazards are discussed in this study. Key results indicated that DTPA was more efficient in removal of Cs from the contaminated soils than the EDTA-Nadidand both decreased considerably soil Cs, particularly from those which are considered the mobile fractions (water soluble and exchangeable fractions) beside of the carbonate bound fractions. Accordingly, the calculated risk assessment code declined noticeably from -very high risk‖ levels (more than 50) to -medium risk‖ levels (ranging from 30 to 50 ) for most spiked soils. In conclusion, DTPA and EDTA-Na are effective chelating agents in reducing the risks associated with Cs contamination in soils.

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Section: Introductionmentioning

confidence: 99%

Removal of cesium from contaminated soils using EDTA-Na and DTPAchelating agents

Elshazly

Farid

Rizk

et al. 2023

Benha Journal of Applied Sciences

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“…Irfan et al, 2021;Alazzaz et al, 2023). Furthermore, HM bioavailability in soil is crucial for successful phytoremediation(Greman et al, 2001).…”

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confidence: 99%

Synergistic phytoremediation effect by Sorghum bicolor, citric acid, biochar, and Vermiwash amendment for the remediation of a mine-contaminated soil

Osman,

Fadhlallah,

El-Morsy

2023

Preprint

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Phytoremediation technology is an eco-friendly technology for the treatment of a polluted environment. In contrast, it has been demonstrated that both natural and synthetic amendments can enhance the process of phytoremediation of heavy metals (HMs) from polluted soils through the utilization of bioenergy crops. This work assessed the synergistic impact of two tested biochar (BC) from data palm (B1) and Prosopis (B2)/ citric acid (CA) and Vermiwash (VW) to enhance phytoremediation of tested HMs (Zn, Pb, Cd, Ni, Cu, Mn, and Fe) from mine-contaminated soil by Sorghum (Sorghum bicolor). The BC and CA amendments alone and combined with VW significantly augmented the proliferation and survival of sorghum grown in mine-contaminated soil. Considering the individual and combined applications of VW and BC, the influence on plant growth followed this order: K > VW > B2 > B1 > B1 + VW > B2 + VW > CA > CA + VW. Applying tested BC/ CA and VW significantly increased chlorophyll compared to unamended soil. The outcomes revealed a substantial elevation in HM absorption in both shoot and root (p ≤ 0.05) with all tested treatments compared to the untreated soil (K). The combined application of CA and VW resulted in the highest uptake of HMs in both the root as well as the shoot. This study highlights the efficacy of combining CA/BC with VW as a more viable option for remediating mine-contaminated soil compared to individual amendments.

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Biochar-Assisted Phytoremediation for Heavy Metals-Contaminated Soils

Muzammal,

Akram,

Shakoor

et al. 2023

Environmental Science and Engineering

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Date palm-magnetized biochar for in-situ stabilization of toxic metals in mining-polluted soil: evaluation using single-step extraction methods and phytoavailability

Cited by 4 publications

References 56 publications

Removal of cesium from contaminated soils using EDTA-Na and DTPAchelating agents

Removal of cesium from contaminated soils using EDTA-Na and DTPAchelating agents

Synergistic phytoremediation effect by Sorghum bicolor, citric acid, biochar, and Vermiwash amendment for the remediation of a mine-contaminated soil

Biochar-Assisted Phytoremediation for Heavy Metals-Contaminated Soils

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