A critical review on speciation, mobilization and toxicity of lead in soil-microbe-plant system and bioremediation strategies

Kushwaha, Anamika; Hans, Nidhi; Kumar, Sanjay; Rani, Radha

doi:10.1016/j.ecoenv.2017.09.049

Cited by 422 publications

(132 citation statements)

References 151 publications

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“…Comparatively, concentrations of root Pb were lower in CMC and SMC treated samples than that of the samples treated with other amendments. We assume that in CMC and SMC treated samples, Pb not only stabilized as insoluble Pb compounds in root surface [64] and in tailings [65], but also immobilized through the fixation by organic matter under favorable pH and EC [66]. In contrast, the increased Pb uptake by A. fruticosa roots in SS, WB and AFS treated tailings might be explained by their higher bioavailable Pb concentrations due to high salinity.…”

Section: Effect Of Amendments On Pb Zn CD and Cu Uptake By A Frutimentioning

confidence: 94%

Phytostabilization of Pb-Zn Mine Tailings with Amorpha fruticosa Aided by Organic Amendments and Triple Superphosphate

et al. 2020

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A greenhouse pot trial was conducted to investigate the effect of organic amendments combined with triple superphosphate on the bioavailability of heavy metals (HMs), Amorpha fruticosa growth and metal uptake from Pb-Zn mine tailings. Cattle manure compost (CMC), spent mushroom compost (SMC) and agricultural field soil (AFS) were applied to tailings at 5%, 10%, 20% and 30% w/w ratio, whereas sewage sludge (SS) and wood biochar (WB) were mixed at 2.5%, 5%, 10% and 20% w/w ratio. Triple superphosphate (TSP) was added to all the treatments at 4:1 (molar ratio). Amendments efficiently decreased DTPA-extracted Pb, Zn, Cd and Cu in treatments. Chlorophyll contents and shoot and root dry biomass significantly (p < 0.05) increased in the treatments of CMC (except T4 for chlorophyll b) and SMC, whereas treatments of SS (except T1 for chlorophyll a and b), WB and AFS (except T4 for chlorophyll a and b) did not show positive effects as compared to CK1. Bioconcentration factor (BCF) and translocation factor (TF) values in plant tissues were below 1 for most treatments. In amended treatments, soluble protein content increased, phenylalanine ammonialyase (PAL) and polyphenol oxidase (PPO) decreased, and catalase (CAT) activity showed varied results as compared to CK1 and CK2. Results suggested that A. fruticosa can be a potential metal phytostabilizer and use of CMC or SMC in combination with TSP are more effective than other combinations for the in situ stabilization of Pb-Zn mine tailings.

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Section: Effect Of Amendments On Pb Zn CD and Cu Uptake By A Frutimentioning

confidence: 94%

Phytostabilization of Pb-Zn Mine Tailings with Amorpha fruticosa Aided by Organic Amendments and Triple Superphosphate

et al. 2020

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“…The notion of using metal accumulator plants for the removal of heavy metals and several other contaminants in phytoremediation was first introduced in 1983, but this idea has already been implanted for the last 300 years [40]. Phytoremediation is known by different names such as agro-remediation, green remediation, vegetative remediation, green technology and botano remediation [4,41,42].…”

Section: Phytoremediationmentioning

confidence: 99%

“…Once the plant has soaked up all the contaminants, they can easily be harvested and disposed [69]. Plants for rhizofiltration should have the ability; to produce a widespread root system, accumulate high concentrations of heavy metals, be easy to handle and have low maintenance cost [42,70]. Both aquatic and terrestrial plants with long fibrous root systems can be used in rhizofiltration [70].…”

Section: Rhizofiltrationmentioning

confidence: 99%

Application of Floating Aquatic Plants in Phytoremediation of Heavy Metals Polluted Water: A Review

et al. 2020

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Heavy-metal (HM) pollution is considered a leading source of environmental contamination. Heavy-metal pollution in ground water poses a serious threat to human health and the aquatic ecosystem. Conventional treatment technologies to remove the pollutants from wastewater are usually costly, time-consuming, environmentally destructive, and mostly inefficient. Phytoremediation is a cost-effective green emerging technology with long-lasting applicability. The selection of plant species is the most significant aspect for successful phytoremediation. Aquatic plants hold steep efficiency for the removal of organic and inorganic pollutants. Water hyacinth (Eichhornia crassipes), water lettuce (Pistia stratiotes) and Duck weed (Lemna minor) along with some other aquatic plants are prominent metal accumulator plants for the remediation of heavy-metal polluted water. The phytoremediation potential of the aquatic plant can be further enhanced by the application of innovative approaches in phytoremediation. A summarizing review regarding the use of aquatic plants in phytoremediation is gathered in order to present the broad applicability of phytoremediation.

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“…On the other hand, the lower acidic soil pH will increase the solubility of Cd (Reddy & Patrick, 1977), through hydrolysis Cd will form as Cd(OH) + at the higher pH, which leads to the improvement of Cd sorption capacity into soils (Sun, Chen, Chao, & Sun, 2007). Pb is mainly found as an insoluble chemical compound in alkaline pH, such as PbCO 3 and Pb 3 (PO 4 ) 2 (Kushwaha, Hans, Kumar, & Rani, 2018). Previous studies also found that P amendments could be applied to stabilize heavy metals in soil (Cui et al, 2017).…”

Section: Factors Affecting CD and Pb Transport In Soilsmentioning

confidence: 99%

Biochar effects on soil chemical properties and mobilization of cadmium (Cd) and lead (Pb) in paddy soil

Feng

Chen

Wen

et al. 2019

Soil Use and Management

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This study focused on the effects of biochar (BC) application on soil chemical properties and mobilization of cadmium (Cd) and lead (Pb) in the paddy soil. BC was applied at the rate of 0, 10, 20 and 40 t ha−1, respectively. BC application caused a significant increase in soil organic carbon contents (SOC), pH, nitrate–nitrogen (NO3−‐N),and available phosphorus contents (AP) in the top and subsurface soil, while SOC contents in the subsurface soil decreased with increasing rate of BC. BC40 effectively reduced the mobility of Cd and Pb from the top layer to the subsurface soil, while concentrations of Cd and Pb in the topsoil remained unchanged. Path analysis showed that the direct path coefficient AP was highest; SOC, NH4+‐N and AP had a negative direct effect on the Cd and Pb in subsurface soil. Soil pH and NO3−‐N had a high negative indirect effect through AP. The decision coefficient decreased in the following order: pH, AP, SOC, NH4+‐N and NO3−‐N. Regression analysis showed that soil Cd and Pb had a significant linear correlation with soil AP, whereas soil Pb also had a significant linear correlation with soil pH. In conclusion, BC40 can alter soil chemical properties and reduce the mobility of Cd and Pb from the top layer to the lower subsurface of the paddy soil.

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A critical review on speciation, mobilization and toxicity of lead in soil-microbe-plant system and bioremediation strategies

Cited by 422 publications

References 151 publications

Phytostabilization of Pb-Zn Mine Tailings with Amorpha fruticosa Aided by Organic Amendments and Triple Superphosphate

Phytostabilization of Pb-Zn Mine Tailings with Amorpha fruticosa Aided by Organic Amendments and Triple Superphosphate

Application of Floating Aquatic Plants in Phytoremediation of Heavy Metals Polluted Water: A Review

Biochar effects on soil chemical properties and mobilization of cadmium (Cd) and lead (Pb) in paddy soil

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