<i>In situ</i> phytoremediation of copper and cadmium in a co-contaminated soil and its biological and physical effects

Xu, Lei; Xing, Xiangyu; Liang, Jiaping; Peng, Jianbiao; Zhou, Jing

doi:10.1039/c8ra07645f

Cited by 44 publications

(14 citation statements)

References 46 publications

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“…were lower than the Cd hyperaccumulator (Sedum plumbizincicola), and Cu concentrations lower than in the Cu tolerant Elsholtzia splendens, Pennisetum sp. accumulated and removed more Cd and Cu due to its much larger biomass (Xu et al 2019). However, soil Cd concentration was very low (<0.42 mg/kg) and 1% hydroxyapatite was added in that study.…”

Section: Discussionmentioning

confidence: 70%

Potential phytoremediation of soil cadmium and zinc by diverse ornamental and energy grasses

Hou

Teng

et al. 2019

BioRes

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The potential of 32 frequently studied ornamental and/or energy grasses and two cadmium/zinc hyperaccumulators for phytoextraction and phytostabilization was compared by their growth in a historically contaminated soil over a three-month pot experiment. Shoot and root biomasses varied by factors of 14.2 and 62.7, respectively. Mainly due to their large biomass, Napier grass (Pennisetum purpureum ‘Purple’) and variegated giant reed (Arundo donax var. versicolor) accumulated cadmium and zinc contents in shoots up to 109.3% and 55.4% higher, respectively, than those in the cadmium/zinc hyperaccumulators, despite their lower metal concentrations. Pennisetum purpureum ‘Purple’ accumulated the most zinc and the third highest cadmium in roots. Bioconcentration factors of cadmium in roots were greater than 1 for 19 grasses. The present study demonstrated that many of these grasses may be suitable for phytostabilization of soil cadmium. Arundo donax var. versicolor exhibited the most potential for phytoextraction of soil zinc, whereas Pennisetum purpureum ‘Purple’ was best for phytoextraction and phytostabilization of cadmium and phytostabilization of zinc. Ornamental/energy grasses may have greater potentials for soil remediation than hyperaccumulators, especially given their utility and eco-economic benefits. The considerable variation in their performance emphases the value of screening to select the most effective candidates.

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Section: Discussionmentioning

confidence: 70%

Potential phytoremediation of soil cadmium and zinc by diverse ornamental and energy grasses

Hou

Teng

et al. 2019

BioRes

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“…For example, Pennisetum sp. has higher biomass compared to both the Cd hyperaccumulator Sedum Plumizincicola and the Cu tolerant Elsholtzia splendens , so it can accumulate and remove more Cd and Cu (Xu et al 2019 ). From these perspectives, ornamental shrubs may be a better substitute for herbs.…”

Section: Discussionmentioning

confidence: 99%

Phytoremediation of potentially toxic elements in a polluted industrial soil using Poinsettia

Xiao

Sarkissian

et al. 2021

Physiol Mol Biol Plants

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Potentially toxic elements (PTEs) pollution has become a serious environmental threat, particularly in developing countries such as China. In response, there is a growing interest in phytoremediation studies to identify plant species as designated hyperaccumulators of PTEs in polluted soils. Poinsettia was selected as a candidate species for phytoremediation of six PTEs (Zn, Pb, Hg, Cr, As, Cu) in this study. A pot cultivation experiment (randomized incomplete block experimental design with 5 treatments and 4 blocks) was conducted using contaminated soils gathered from an industrial area in southcentral China. The bioaccumulation factor (BAF), translocation factor (TF), and bioconcentration factor were analyzed to determine the phytoremediation potential of poinsettia potted in different ratios of polluted soils. One-way ANOVA with post-hoc Tukey’s test showed that poinsettia had significant uptake of Zn, Pb, Cu (BAF < 1 and TF < 1, p < 0.05) and Hg (BAF < 1 and TF > 1, p < 0.05). Poinsettias can therefore effectively accumulate Zn, Pb, and Cu in their lateral roots while extracting and transferring Hg into their leaves. Moreover, poinsettia exhibited tolerance towards As and Cr. Interestingly, it was also observed that PTEs can inhibit the height of potted poinsettia at a certain concentration.

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“…was found to be the best species for Cu and Cd removal. 12 Also, the biomasses of Elsholtzia splendens and Sedum plumbizincicola were found to be good species for Cu and Cd removal. 12 The obtained results showed that the functionalized halloysite nanotubes enhanced the adsorption capability of the clay mineral and it made nanoclay a good candidate for heavy metal removal from aqueous solutions.…”

Section: Introductionmentioning

confidence: 91%

“…12 Also, the biomasses of Elsholtzia splendens and Sedum plumbizincicola were found to be good species for Cu and Cd removal. 12 The obtained results showed that the functionalized halloysite nanotubes enhanced the adsorption capability of the clay mineral and it made nanoclay a good candidate for heavy metal removal from aqueous solutions. 13 Physicochemical procedures comprise adsorption, ion exchange, membrane ltration, and chemical precipitation.…”

Section: Introductionmentioning

confidence: 91%

A novel efficient bioflocculant QZ-7 for the removal of heavy metals from industrial wastewater

et al. 2019

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In situ phytoremediation of copper and cadmium in a co-contaminated soil and its biological and physical effects

Abstract: Phytoremediation is a potential cost-effective technology for remediating heavy metal-contaminated soils.

Cited by 44 publications

References 46 publications

Potential phytoremediation of soil cadmium and zinc by diverse ornamental and energy grasses

Potential phytoremediation of soil cadmium and zinc by diverse ornamental and energy grasses

Phytoremediation of potentially toxic elements in a polluted industrial soil using Poinsettia

A novel efficient bioflocculant QZ-7 for the removal of heavy metals from industrial wastewater

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