Prospect of phytoremediation combined with other approaches for remediation of heavy metal-polluted soils

Liu, Shuming; Yang, Bo; Liang, Yue; Xiao, Yunhua; Fang, Jun

doi:10.1007/s11356-020-08282-6

Cited by 102 publications

(37 citation statements)

References 200 publications

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“…Reproductive parts of plants are adversely affected by automobile's emission [38][39][40]. Heavy metal pollution affects seedling growth and germination of roadside vegetation [41][42][43]. The germination rate of seeds is decreases due to excessive Pb toxicity [44,45].…”

Section: Introductionmentioning

confidence: 99%

Heavy metal accumulation by roadside vegetation and implications for pollution control

Altaf

Altaf²,

Hussain

et al. 2021

PLoS ONE

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Vehicular emissions cause heavy metal pollution and exert negative impacts on environment and roadside vegetation. Wild plants growing along roadsides are capable of absorbing considerable amounts of heavy metals; thus, could be helpful in reducing heavy metal pollution. Therefore, current study inferred heavy metal absorbance capacity of some wild plant species growing along roadside. Four different wild plant species, i.e., Acacia nilotica L., Calotropis procera L., Ricinus communis L., and Ziziphus mauritiana L. were selected for the study. Leaf samples of these species were collected from four different sites, i.e., Control, New Lahore, Nawababad and Fatehabad. Leaf samples were analyzed to determine Pb2+, Zn2+, Ni2+, Mn2+ and Fe3+ accumulation. The A. nilotica, Z. mauritiana and C. procera accumulated significant amount of Pb at New Lahore site. Similarly, R. communis and A. nilotica accumulated higher amounts of Mn, Zn and Fe at Nawababad and New Lahore sites compared to the rest of the species. Nonetheless, Z. mauritiana accumulated higher amounts of Ni at all sites compared with the other species included in the study. Soil surface contributed towards the uptake of heavy metals in leaves; therefore, wild plant species should be grown near the roadsides to control heavy metals pollution. Results revealed that wild plants growing along roadsides accumulate significant amounts of heavy metals. Therefore, these species could be used to halt the vehicular pollution along roadsides and other polluted areas.

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Section: Introductionmentioning

confidence: 99%

Heavy metal accumulation by roadside vegetation and implications for pollution control

Altaf

Altaf²,

Hussain

et al. 2021

PLoS ONE

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“…Nowadays, engineered transgenic approaches are considered as a main research field in biotechnology for improving phytoremediation. The overexpression of genes was applied to reduce the stress imposed by HMs and promote the phytoremediation capacity of plants [107]. Hyper-accumulator plants can additionally be improved through genetic approaches/molecular mechanisms to overcome some limitations of phytoremediation.…”

Section: Transgenic Approachesmentioning

confidence: 99%

“…Phytoremediation is a green strategy that uses hyperaccumulator plants and their rhizospheric microorganisms to stabilize, transfer or degrade pollutants in soil, water and environment [107]. This technology is considered as well-efficient, cheap and adaptable with the environment [10,136].…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation: a sustainable environmental technology for heavy metals decontamination

Nedjimi

2021

SN Appl. Sci.

234

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Toxic metal contamination of soil is a major environmental hazard. Chemical methods for heavy metal's (HMs) decontamination such as heat treatment, electroremediation, soil replacement, precipitation and chemical leaching are generally very costly and not be applicable to agricultural lands. However, many strategies are being used to restore polluted environments. Among these, phytoremediation is a promising method based on the use of hyper-accumulator plant species that can tolerate high amounts of toxic HMs present in the environment/soil. Such a strategy uses green plants to remove, degrade, or detoxify toxic metals. Five types of phytoremediation technologies have often been employed for soil decontamination: phytostabilization, phytodegradation, rhizofiltration, phytoextraction and phytovolatilization. Traditional phytoremediation method presents some limitations regarding their applications at large scale, so the application of genetic engineering approaches such as transgenic transformation, nanoparticles addition and phytoremediation assisted with phytohormones, plant growth-promoting bacteria and AMF inoculation has been applied to ameliorate the efficacy of plants as candidates for HMs decontamination. In this review, aspects of HMs toxicity and their depollution procedures with focus on phytoremediation are discussed. Last, some recent innovative technologies for improving phytoremediation are highlighted.

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“…Because of their ubiquitous nature, significant metabolic capacities, and related adaptation potentials, microorganisms play a key role in the functioning and transformation of biogeochemical cycles. Processes such as denitrification and nitrogen fixation are specifically related to the activities of microorganisms [22]. The metabolism of microorganisms involved in plant root exudates plays an active role in the geochemical cycle of pollutants.…”

Section: Analysis Of the Complexing Ability Between Root Exudates And Fe(iii)mentioning

confidence: 99%

Effects of alfalfa root exudates on the microbial remediation of nitrate-heavy metal complex pollution in groundwater

Li¹,

Dai²,

Wen-juan³

et al. 2021

ScienceAsia

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The effects of root exudate addition on Fe(II) oxidation, nitrate degradation, and heavy metal removal by Clostridium sp. strain PXL2 were studied. The root exudate addition could increase the average oxidation rate of Fe(II) from 0.52 to 0.68 mM Fe(II)/d. The removal rate of nitrate, arsenic, and mercury could be increased from 54% to 95%, 84% to 99%, and 60% to 86%, respectively. The complexation of Fe(III) with the root exudates was analyzed by quenching titration. The results showed that there was a complexation of root exudates with Fe(III). This complexation resulted in increased precipitation of iron oxides and further promoted the removal of heavy metals.

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Prospect of phytoremediation combined with other approaches for remediation of heavy metal-polluted soils

Cited by 102 publications

References 200 publications

Heavy metal accumulation by roadside vegetation and implications for pollution control

Heavy metal accumulation by roadside vegetation and implications for pollution control

Phytoremediation: a sustainable environmental technology for heavy metals decontamination

Effects of alfalfa root exudates on the microbial remediation of nitrate-heavy metal complex pollution in groundwater

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