Depthprofile distribution of Cs and its toxicity for canola plants grown on arid rainfed soils as affected by increasing K-inputs

Elshazly, amal; Abbas, Mohamed; Farid, Ihab; Rizk, M.; Abdelhafez, Ahmed A.; Abbas, Hassan; Soliman, Soliman M.; Abdel-Sabour, M.F.; Mohamed, Ibrahim

doi:10.1016/j.ecoenv.2019.109529

Cited by 9 publications

(6 citation statements)

References 72 publications

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“…Shale deposits, rich in clay minerals (Wilson and Wilson, 2014), can be used successfully to improve the characteristics of sandy soils (Eldardiry and Abd El-Hady, 2012;Hassan et al, 2016); yet contaminant founds in these shales should be lessened, prior to their use, to meet the acceptable environmental levels (Khurramovna et al, 2021). Potentially toxic elements are of special concern because these contaminants do not undergo biodegradation (Hashim et al, 2017;Abbas and Bassouny, 2018;Farid et al, 2019); hence possessing long term negative environmental impacts (Abdelhafez et al, 2015;Elshazly et al, 2019;Abdelhafez et al, 2021;Sarhan et al, 2021;Abd-El-Hady and Abdelaty, 2022;Asaad et al, 2022;Hussein et al, 2022;El-Shwarby et al, 2022;Mekawi et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the removal efficiency of potentially toxic elements (PTEs) from a shale deposit by citric acid

2023

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HE MAJORITY of arable lands of Egypt are deserts, mainly sandy soils of low fertility, low water retention and high water and wind erodibility. Shale deposits (rich in clay minerals) might be considered suitable conditioners to improve soil physical, chemical and mineralogical properties and hence increase its productivity. However, these additives should not be a source of contaminants such as PTEs. Accordingly, a technical shale deposit sample was collected fromAbu Thor (longitudes between 33 ○ 22″ and 33 ○ 23ʺ E and latitudes between 29 ○ 00″ and 29 ○ 02ʺ N), Southwest Sinai. In this shale deposit sample, silica comprised 37.35% and alumina was about 18.37%. This sample also contained630 mg Mn, 7704 mg Zn, 19200 mg Fe, 2627 mg Pb, 2763 mg Co and 1310 mg Ni per kg. These levels are not environmentally acceptable in shale deposits when used for soil conditioning. Accordingly, removal or at least reduction in contents of these contaminants in shale deposits should be considered prior to their addition as conditioners to low fertile which exhibit low water holding soils such as the sandy ones. To attain this aim, PVC columns (6.8cm inner diameter× 45cm height) were filled with the shale deposit, washed with citric acid (conc: 10 g L -1 ) at a flow rate of 1 mL per min. with a total volume of 3200 mL per column and the leachate was collected every 100 min to determine its content of PTEs. Cumulative extracted PTEs were calculated versus time and best fitted to the power function kinetic model. This extraction followed the sequence of Ni>Fe>Co>Pb≈Zn>Mn and, in general, the removal efficiencies were low and did not exceed 12% of Ni, 4% of Co, 2.97% of Mn, 2% of Pb and 1% for each of Fe and Zn. It can; therefore, be deduced that citric acid can only chelate the easily bounded forms of PTEs. More researches are needed to investigate the efficiency of citric acid for in-situ long term facilitated phytoextraction of PTEs from shale deposits to attain more acceptable levels

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Section: Introductionmentioning

confidence: 99%

Evaluating the removal efficiency of potentially toxic elements (PTEs) from a shale deposit by citric acid

2023

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“…Accumulation of potentially toxic elements (PTEs)in soil represents a serious environmental threat worldwide [1][2][3][4][5][6][7]. Cesium is one of the main fusion products, which has been stared to release to the atmosphere after the first nuclear bomb at the sixties of the last century [8][9][10]. The following nuclear disasters such as Chernobyl in1986 and Fukoshima in 2011 returns the fear of the negative consequences of Cs on the environment [11][12][13].Cs as a radioactive nuclide ( 137 Cs has about 30 years half-life) risks are higher than the corresponding ones of the stable toxic form [14].Generally, the chemical behavior of 137 Cs is similar to those of Na and K [15]; thusit deposits in the soft tissues of aquatic and terrestrial organisms [16].…”

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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“…These metal ions persist in soil and don't undergo by biodegradation (Tangahu et al, 2011;Osman et al, 2017;Abbas and Bassouny, 2018;Elshazly et al, 2019;Shehata et al, 2019; 2020). Heavy metal spread widely as a result of anthropogenic activities and industrial revolution.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Heavy Metals Concentration in Soil and Plants as Affected by Vehicular Emission in Alluvial Soil at Middle Egypt Conditions

Sarhan¹,

El-Hafeez

bashandy

2021

Egypt.J. Soil Sci.

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OOD TRAFFIC exhaust emissions are one of the most common sources of contaminants to soils and vegetation lies in the vicinity of highways. The main aim of this research is to investigate concentrations of Pb, Cd, Zn and Cu in soil at surface soil depth (0.0 -30) and subsurface soil depth (30 -60 cm) as affected by vehicle exhausts along the agricultural highway connecting Cairo -El-Minia City across Beba City, Beni-Suef Governorate, Egypt. In addition, revising the consequences on the staple wheat and maize roadside crops in terms of heavy metals presence in the edible parts for animals and humans. The results show that as the distance from the road decreased the concentration of Pb, Cd and Zn increased to 22, 45, 67, in soils and to 34, 56, 67 in plants, respectively. In general, the limits of heavy metals in wheat and maize plants were safe as stated by WHO (World Health Organization), except Cd (34) in leaves of wheat and maize grown adjacent the road. The pollution incidences, namely, transfer factor (TF), single pollution index (PI) and index of geo-accumulation (Igeo) were calculated and the results indicate that these indices decreased as the distance from the road increased especially in the western side rather than the eastern one. In this concern, this soil was moderately contaminated with Cd, while Pb, Zn and Cu were in the safety level.In conclusion, wheat and corn leaves contain cadmium near the danger limit, so it can be concluded that feeding animals should be prevented by plants grown near highways.

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Depthprofile distribution of Cs and its toxicity for canola plants grown on arid rainfed soils as affected by increasing K-inputs

Cited by 9 publications

References 72 publications

Evaluating the removal efficiency of potentially toxic elements (PTEs) from a shale deposit by citric acid

Evaluating the removal efficiency of potentially toxic elements (PTEs) from a shale deposit by citric acid

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

Evaluation of Heavy Metals Concentration in Soil and Plants as Affected by Vehicular Emission in Alluvial Soil at Middle Egypt Conditions

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