Enhanced Phytoremediation of Soil Heavy Metal Pollution and Commercial Utilization of Harvested Plant Biomass: a Review

Quarshie, Samuel De-Graft; Xiao, Xinfeng; Zhang, Linlin

doi:10.1007/s11270-021-05430-7

Cited by 16 publications

(8 citation statements)

References 145 publications

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“…Using second-generation bioenergy crop such as switchgrass for phytoremediation of contaminated soils has shown great potentials (Shen et al, 2002;Van Ginneken et al, 2007;Hernández-Allica et al, 2008;Chen et al, 2012;Oh et al, 2013;Balsamo et al, 2015;Min et al, 2017;Quarshie et al, 2021). This is largely due to the plants amount of harvestable biomass, ethanol conversion potential and its ability to be grown in diverse climates as a remediator (Hernández-Allica et al, 2008;Boyer et al, 2013;Min et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Phytoextraction of lead (Pb) contaminated soil by switchgrass (Panicum virgatum L): Impact of BAP and NTA applications

et al. 2022

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The accumulation of Pb deposits in soil is a growing global concern. Soil remediation options include phytoextraction that involves the use of plants and associated soil microorganism. Switchgrass (Panicum virgatum L.), a second-generation bioenergy crop was used in this study due to its ability to produce high biomass and grow in metal polluted soils. Plants were grown in Pb-contaminated soil (5,802.5 mg kg−1) in an environmentally controlled greenhouse. Plants were treated with exogenous application of the plant growth regulator (PGR) benzylaminopurine (BAP) or complete foliar nutrient solution (Triple-12®) twice a week until harvested. Plants also received the soil fungicide propiconazole (Infuse™) that was followed by the soil chelate nitrilotriacetic acid (NTA). Two concentrations of NTA were compared (5 mM and 10 mM) and combined application of NTA (10 mM) + APG (alkyl polyglucoside). Soil fungicide (propiconazole) was used to arrest arbuscular mycorrhizal fungi (AMF) activities in the roots of switchgrass in order to enhance Pb-phytoextraction. Lead (Pb) was measured in dry plant materials using an ICP-OES. Phytoextraction by switchgrass was significantly improved by dual soil applications of 10 mM NTA, APG and foliar applications of BAP which resulted in the greatestaverage Pb concentration of 5,942 mg kg−1. The average dry mass of plants and the average value for total phytoextracted Pb (mg) per pot were significantly greatestfor plants treated with 10 mM NTA, APG and BAP. Also, plants treated with NTA and BAP showed average bioconcentration factor of 1.02. The results suggested that chemically enhanced phytoextraction significantly improved biomass production of switchgrass and at the same time increased phytoextracted Pb which is important for phytoremediation and bioenergy industry.

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Section: Discussionmentioning

confidence: 99%

Phytoextraction of lead (Pb) contaminated soil by switchgrass (Panicum virgatum L): Impact of BAP and NTA applications

et al. 2022

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“…A new hybrid method uses anaerobic bioleaching and electro kinetics (Lee et al 2009). Heavy metals build up in the plant's harvested tissue, which can be thrown away-adding microorganisms that move around to contaminated water speeds up the buildup of heavy metals (Quarshie et al 2021). The immobilization process changes the physical and chemical properties of the pollutant so that it cannot move.…”

Section: Fig 7 Various Microbial Interactions With Heavy Metalsmentioning

confidence: 99%

Principles and Applicability of Integrated Remediation Strategies for Heavy Metal Removal/Recovery from Contaminated Environments

Alsafran

Saleem

Jabri

et al. 2022

J Plant Growth Regul

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Contamination of agricultural soils with heavy metals present lethal consequences in terms of diverse ecological and environmental problems that entail entry of metal in food chain, soil deterioration, plant growth suppression, yield reduction and alteration in microbial community. Metal polluted soils have become a major concern for scientists around the globe. In more recent times, armed with new knowledge and understanding, removal of heavy metals using different applications has emerged as a solution for waste treatment and contaminant remediation in water and soil. However, the description of metal toxicity to the plants and its removal and degradation from the soil is limited. There are a number of reports in the literature where PGP bacterial inoculation and various chelating agents improves metal accumulation and it’s detoxification in different plant parts without influencing plant growth. Therefore, there is a need to select some useful chemicals which possess the potential to improve plant growth as well as expedite the phytoremediation of metals. In this review, we have discussed the mechanisms possessed by different chelating agents to promote plant growth and phytoremediation of metals. We anticipate that this analysis of interconnected systems will lead to the discovery of new research fields.

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“…[Biomass] treated or contaminated [Biomass] control or non−contaminated (15) where [Biomass] treated or contaminated is the biomass of the whole plant in treated or metalcontaminated soil; [Biomass] control or non-contaminated is the biomass of the whole plant in control or non-metal-contaminated soil. However, different research studies have been carried out in the world to evaluate the efficiency of the plant tolerance in compared to non-contaminated soil (control) in respect to plant length, root length, shoot length, and this was calculated as [71,83,84] (Equation ( 16)):…”

Section: Tolerance Index (Ti)mentioning

confidence: 99%

“…Effective research is ongoing in the world for the use of plant varieties which can help in the remediation of metal-contaminated sites. The research was focused on metal-tolerant, hyperaccumulator, accumulator or excluder plant species on naturally contaminated substrates or in artificially metal spiked soil to remove, stabilize or prevent the leaching of toxic metals in the environment [1,15,16]. Some of the plant efficiency factors that help to assess phytoremediation were also studied; however, they vary from one to another.…”

Section: Introductionmentioning

confidence: 99%

Soil Pollution and Plant Efficiency Indices for Phytoremediation of Heavy Metal(loid)s: Two-Decade Study (2002–2021)

Kumar

Tripti

Raj

et al. 2022

Metals

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This paper reviews research on phytoremediation (2002–2021), particularly for the estimation of plant efficiency and soil pollution indices, examining the extraction of metals from soil and plants growing under both artificial (spiked with specific metal) and natural conditions. From the analysis of >200 published experimental results, it was found that contamination factor and geo-accumulation index as well as translocation and bioconcentration factors are the most important soil pollution and plant efficiency metrices, respectively, which are gaining importance to assess the level of metal pollution and its transfer from soil to plant to find a better metal clean-up strategy for phytoremediation. To access the metal concentration, it was found that the most widely accepted extractants to dissolve and extract the metals from the soil and plant were HNO3 and HClO4 (mainly in 5:1; v/v or 4:1; v/v), which are used both in natural and artificial metal contamination studies. Moreover, plants such as Pteris vittata, Monochoria korsakowi, Lolium perenne, Festuca rubra, Poa pratensis, Ricinus communis, and Siegesbeckia orientalis can act as hyperaccumulators under both natural and artificial experiments and can be directly implemented into the fields without checking their further efficiency in phytoremediation.

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Enhanced Phytoremediation of Soil Heavy Metal Pollution and Commercial Utilization of Harvested Plant Biomass: a Review

Cited by 16 publications

References 145 publications

Phytoextraction of lead (Pb) contaminated soil by switchgrass (Panicum virgatum L): Impact of BAP and NTA applications

Phytoextraction of lead (Pb) contaminated soil by switchgrass (Panicum virgatum L): Impact of BAP and NTA applications

Principles and Applicability of Integrated Remediation Strategies for Heavy Metal Removal/Recovery from Contaminated Environments

Soil Pollution and Plant Efficiency Indices for Phytoremediation of Heavy Metal(loid)s: Two-Decade Study (2002–2021)

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