Influence of plant species and phosphorus amendments on metal speciation and bioavailability in a smelter impacted soil: a case study of food-chain contamination

Shahid, Muhammad; Xiong, Tiantian; Masood, Nasir; Leveque, Tibo; Quénéa, Katell; Austruy, Annabelle; Foucault, Yann; Dumat, Camille

doi:10.1007/s11368-013-0745-8

Cited by 66 publications

(37 citation statements)

References 39 publications

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“…As seen in Fig. 3a, b, most of Pb was sequestered in wheat roots rather than the aboveground parts under the different treatments, which was in agreement with Shahid et al (2014) who found that the presence of phosphate amendments increased Pb sequestration in roots of both pea and tomato. Compared with the control treatment, the addition of SE, SSP, TSP, and CMP to the soils significantly decreased the Pb concentration in the wheat grains by 34.21,36.84,28.94,and 50% (Fig.…”

Section: And Pb Concentrations In Different Parts Of the Wheat Plantsupporting

confidence: 90%

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

et al. 2017

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Purpose The aim of this study was to evaluate the effectiveness of soil amendments and foliar fertilizer on Cd and Pb immobilization in contaminated soils. Materials and methods A field experiment was conducted in contaminated soils, wherein four amendments (sepiolite (SE), single superphosphate (SSP), triple super phosphate (TSP), calcium magnesium phosphate (CMP)) in combination with one foliar fertilizer (ZnSO 4 ) were investigated to reduce Cd and Pb bioavailability in calcareous soils. Total Cd and Pb concentrations in wheat, soil, and amendments were determined using inductively coupled plasma mass spectrometry. Available concentrations of Cd and Pb in soils were extracted using diethylenetriamine pentaacetic acid. Results and discussion The results indicated that application of these amendments and foliar fertilizer significantly decreased Cd availability in soils and Cd accumulation in wheat (P < 0.05); however, the soil amendments plus Zn fertilizer did not significantly decrease Cd and Pb concentrations in wheat. Compared with the control, application of soil amendments effectively reduced the available Cd and Pb in soils by 25.69~54.13% and 9.86~42.14%, respectively. Accordingly, the reduction of Cd and Pb concentrations in wheat grain by the soil amendments was 20.68~41.38% and 23.68~55.26%, respectively.Conclusions Among all the treatments, the addition of SE + SSP and SE + CMP exhibited the most efficiency in reducing Cd and Pb availability, respectively, in the soil.

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Section: And Pb Concentrations In Different Parts Of the Wheat Plantsupporting

confidence: 90%

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

et al. 2017

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“…These processes cause redistribution of heavy metal(loid)s from soil solution to solid particles, thus limiting their transport and bioavailability in soil. Heavy metal(loid)s immobilization in soil is generally carried out by using organic and inorganic amendment to soils (Shahid et al, 2014c;Austruy et al, 2014;Ashraf et al, 2016). The most commonly amendments include cement, clay, zeolites, phosphates, minerals, microbes and organic amendments (Sun et al, 2016).…”

Section: Immobilization Techniquesmentioning

confidence: 99%

“…It is reported that chelating agent form metal-chelate complexes which are taken up by the plant, mainly through a passive apoplastic pathway (Zhao et al, 2010;Shahid et al, 2014c). Synthetic chelates are well known to assist the movement of metals towards plant root by releasing metals from soil solids to soil solution, thus enhancing metal phytoavailability.…”

Section: Phytoextraction By Genetically Modified Plantsmentioning

confidence: 99%

“…Among the chelating agents, EDTA is considered the most effective and tested mobilizing amendment for the remediation of metals especially Pb (Shahid et al, 2014c). EDTA is known to enhance heavy metal(-loid)s uptake from the soil to N1% of shoot dry biomass (Shahid et al, 2014c).…”

Section: Phytoextraction By Genetically Modified Plantsmentioning

confidence: 99%

“…EDTA is known to enhance heavy metal(-loid)s uptake from the soil to N1% of shoot dry biomass (Shahid et al, 2014c). Several factors are involved in EDTA-assisted enhanced uptake of heavy metal(loid)s by plants which include (i) enhanced phytoavailable metal concentration in soil, (ii) increased movement of metal-EDTA complex towards plant root, (iii) destruction of physiological barriers in roots by EDTA, (iv) limited binding between metal-EDTA complex and the negatively charged cell walls, and (v) enhanced xylem loading and transfer of metal-EDTA complex towards aerial parts (Saifullah et al, 2009;Shahid et al, 2014e).…”

Section: Phytoextraction By Genetically Modified Plantsmentioning

confidence: 99%

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A comparison of technologies for remediation of heavy metal contaminated soils

Khalid

Shahid

Niazi

et al. 2017

Journal of Geochemical Exploration

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947

333

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, et al.. A comparison of technologies for remediation of heavy metal contaminated soils. Journal of Geochemical Exploration, Elsevier, 2016Elsevier, , 182, pp.247 -268. 10.1016Elsevier, /j.gexplo.2016 Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@listes-diff.inp-toulouse.fr a b s t r a c tSoil contamination with persistent and potentially (eco)toxic heavy metal(loid)s is ubiquitous around the globe. Concentration of these heavy metal(loid)s in soil has increased drastically over the last three decades, thus posing risk to the environment and human health. Some technologies have long been in use to remediate the hazardous heavy metal(loid)s. Conventional remediation methods for heavy metal(loid)s are generally based on physical, chemical and biological approaches, which may be used in combination with one another to clean-up heavy metal(loid) contaminated soils to an acceptable and safe level. This review summarizes the soil contamination by heavy metal(loid)s at a global scale, accumulation of heavy metal(loid)s in vegetables to toxic levels and their regulatory guidelines in soil. In this review, we also elucidate and compare the pool of available technologies that are currently being applied for remediation of heavy metal(loid) contaminated soils, as well as the economic aspect of soil remediation for different techniques. This review article includes an assessment of the contemporary status of technology deployment and recommendations for future remediation research. Finally, the molecular and genetic basis of heavy metal(loid) (hyper)accumulation and tolerance in microbes and plants is also discussed. It is proposed that for effective and economic remediation of soil, a better understanding of remediation procedures and the various options available at the different stages of remediation is highly necessary.

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Effects of phosphate and citric acid on Pb adsorption by red soil colloids

Zuo

et al. 2016

Env Prog and Sustain Energy

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There are abundant organic acids in rhizospheric soil, which may interfere in the reaction between phosphate and heavy metals. Effects of phosphate on Pb2+ adsorption by red soil colloids(Ultisol) were studied in the presence of citric acid (Cit) through batch equilibrium experiments, Zeta potential and X‐ray diffraction (XRD) analyses. Results showed that in the presence of different concentrations of phosphate (P), the peak‐like curves of Pb2+ sorption was moved up even disappeared. When the Langmuir equation was used to model isothermal adsorption curve of Pb2+, the adsorption reaction constant (K), the maximum adsorption quantity (Xm) of several treatments were both in a decreasing order of 1.0 mmol/L P > 1.0 mmol/L P + 0.5 mmol/L Cit > 0.5 mmol/L Cit. Under the influence of citric acid, the Pb2+ adsorption amount increased at pH < 4.5, and then decreased gradually with pH increase. The order of Zeta potential reduction was: 1 mmol/L P + 0.5 mmol/L Cit > 0.5 mmol/L Cit > 1 mmol/L P, which were different from that of the Pb2+ adsorption amount, suggesting that the adsorption of Pb2+ was not only an electrical adsorption in the presence of P. XRD patterns proved that occurrence of pyromorphite for the treatment with 1.0 mmol/L P addition, whereas no lead phosphate peak was detected in other treatments. The mechanism of Pb2+ adsorbed in red soil colloids with addition of phosphate was primary formation of pyromorphite‐like compounds. However, 0.5 mmol/L Cit inhibited the formation of pyromorphite. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 969–974, 2016

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Influence of plant species and phosphorus amendments on metal speciation and bioavailability in a smelter impacted soil: a case study of food-chain contamination

Cited by 66 publications

References 39 publications

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

A comparison of technologies for remediation of heavy metal contaminated soils

Effects of phosphate and citric acid on Pb adsorption by red soil colloids

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