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

2021 ◽  
Author(s):  
Fangmeng Xiao ◽  
Zhanying Gu ◽  
Arbi Sarkissian ◽  
Yaxin Ji ◽  
RuonanYang ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Toxic Elements ◽  
Lateral Roots ◽  
Translocation Factor ◽  
Industrial Area ◽  
Potentially Toxic Elements ◽  
Polluted Soils ◽  
Environmental Threat ◽  
Industrial Soil ◽  
Significant Uptake

AbstractPotentially 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.

scholarly journals Field accumulation and translocation of potentially toxic elements (PTEs) from industrial soil by the biodiesel plant, Jatropha curcas

2021 ◽  
Vol 14 (1) ◽  
pp. 195-206
Author(s):  
Z. Abdullahi ◽  
A.A. Abdulrahman
Keyword(s):  
Jatropha Curcas ◽  
Contaminated Soils ◽  
Toxic Elements ◽  
Bioconcentration Factor ◽  
Anthropogenic Activities ◽  
Industrial Area ◽  
Potentially Toxic Elements ◽  
Harsh Environments ◽  
Industrial Soil ◽  
Soil Media

Samples of Jatropha curcas, a non-edible biodiesel plant, which tolerates harsh environments was collected from an industrial area with high anthropogenic activities (Challawa Industrial area, Kano, Nigeria)and sorted into leaves, stems and roots. The aim is to assess the potentials of Jatropha curcas in accumulation and translocation of six Potentially Toxic Elements (PTEs) (Zn, Cu, Cd, Cr, Pb and Ni) from the soil media. Atomic Absorption Spectroscopy (AAS) was used to assess the concentrations. The bioaccumulation/ transfer of metals from roots to shoots and from soil to roots were evaluated in terms of translocation (TF) and bioconcentration factor (BCF). TF values of 1.02, 4.92, 2.68, 3.73, 1.5 and 3.19 for Zn, Cu, Cd, Cr, Pb and Ni respectively indicate that J. curcas was efficient in translocation of PTEs from roots to shoots. This is an indication that the plant is therefore suitable for phytoextraction of Zn, Cu, Cd, Cr, Pb and Ni. But CF value of 0.66 and 0.70 for Cu and Pb on the other hand shows that J. curcas is less able to translocate these two metals (Cu and Pb) indicating ineffective transfer. This show that J. curcas may be suitable a candidate for phytostabilization of Copper and lead in contaminated soils in the study area.

Biochar as an (Im)mobilizing Agent for the Potentially Toxic Elements in Contaminated Soils

2019 ◽  
pp. 255-274 ◽  
Author(s):  
Sabry M. Shaheen ◽  
Ali El-Naggar ◽  
Jianxu Wang ◽  
Noha E.E. Hassan ◽  
Nabeel Khan Niazi ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Toxic Elements ◽  
Potentially Toxic Elements

Mercury and other potentially toxic elements in the Sierra Gorda (Queretaro area, Mexico): affection to enzymatic activity in soils.

2020 ◽  
Author(s):  
Pablo Higueras ◽  
Karen Arroyo ◽  
JuanAntonio Campos ◽  
Jesus Peco ◽  
JoseMaria Esbrí ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Acid Phosphatase ◽  
Enzymatic Activity ◽  
Contaminated Soils ◽  
Toxic Elements ◽  
Soil Health ◽  
Potentially Toxic Elements ◽  
Key Factors ◽  
Permissible Limits ◽  
Study Sites

&lt;p&gt;Cinnabar mining, to obtain mercury, is still an important activity for the residents of the Sierra Gorda in Mexico, so this activity is currently source of mercury emission and possibly of other potentially toxic elements (PTE). In this work, seven study sites, located in areas with presence of exploitations of active or decommissioned mercury mines, have been studies with the aim of characterizing its occurrence and their effects on soil health.&lt;/p&gt;&lt;p&gt;Biogeochemical analyses have been carried out with the purpose of identifying the key factors related with nutritional and toxicological status of these soils, looking for possible relationships between mercury, PTEs and their impact on the enzymatic activity of the soil.&lt;/p&gt;&lt;p&gt;The values &amp;#8203;&amp;#8203;obtained for total mercury ranged from 5 to 159 ppm; comparing these values with those from an uncontaminated area, we observe that all zones are above reference range (0.01 to 0.03 mg/kg) and that four of them exceed the maximum permissible limits (23 mg/kg), according to Mexican regulations. Other measured PTE elements were Pb, with a range between 18.7 to 814.1 mg/kg; Cu between 45.4 to 94.2 mg/kg; Zn between 145.1 to 555.8 mg/kg; As between 30.5 to 1590 mg/kg; and Sb between 18.3 to 169.6 mg/kg. &amp;#160;Comparing with other areas, anomalous concentrations of trace elements in soils with the following values are considered: Pb up to 10,000 mg/kg, Cu up to 2,000 mg/kg, Zn up to 10,000 mg/kg and As up to 2500 mg/kg; none of the determined elements exceeds these reference values. In the case of enzymatic activities, a range between 111.36 and 332.38 &amp;#181;gTPF g&lt;sup&gt;-1&lt;/sup&gt;day&lt;sup&gt;-1&lt;/sup&gt; was obtained with dehydrogenase. These values are slightly higher compared to other Hg contaminated soils (110 &amp;#181;gTPF g&lt;sup&gt;-1&lt;/sup&gt;day&lt;sup&gt;-1&lt;/sup&gt;) described by this team. For the acid phosphatase, a range between 516.72 to 1606.34 &amp;#181;gPNF g&lt;sup&gt;-1&lt;/sup&gt;h&lt;sup&gt;-1&lt;/sup&gt;; and for alkaline phosphatase a range between 1624.92 to 4070.82 &amp;#181;gPNF g&lt;sup&gt;-1&lt;/sup&gt;h&lt;sup&gt;-1&lt;/sup&gt;. These values correspond to those measured in Sokolov, Czech Republic, ranging from 381 to 1510 &amp;#181;gPNF g&lt;sup&gt;-1&lt;/sup&gt;h&lt;sup&gt;-1&lt;/sup&gt; for acid phosphatase and 455 to 4820 &amp;#181;gPNF g&lt;sup&gt;-1&lt;/sup&gt;h&lt;sup&gt;-1&lt;/sup&gt; for alkaline phosphatase measured in topsoil layer from spoil heaps after brown coal mining.&lt;/p&gt;&lt;p&gt;Our results show that the soil has contents of PTE elements indicating low pollution degree, except for Hg, registering concentrations above the maximum permissible limits for non-industrial soils; however, the results of the enzymatic activity reflect a &quot;good&quot; activity. Therefore, the incidence of the presence of these metals in the soil health, as measured through enzymatic activity, does not have a significant impact and the studied soils can be considered as suitable for commercial, residential or agricultural uses.&lt;/p&gt;

scholarly journals Soil amendments for immobilization of potentially toxic elements in contaminated soils: A critical review

2020 ◽  
Vol 134 ◽  
pp. 105046 ◽  
Author(s):  
Kumuduni Niroshika Palansooriya ◽  
Sabry M. Shaheen ◽  
Season S. Chen ◽  
Daniel C.W. Tsang ◽  
Yohey Hashimoto ◽  
...  
Keyword(s):  
Critical Review ◽  
Contaminated Soils ◽  
Toxic Elements ◽  
Soil Amendments ◽  
Potentially Toxic Elements

Solid speciation and mobility of potentially toxic elements from natural and contaminated soils: A combined approach

Chemosphere ◽  
2008 ◽  
Vol 73 (5) ◽  
pp. 776-784 ◽  
Author(s):  
J. Kierczak ◽  
C. Neel ◽  
U. Aleksander-Kwaterczak ◽  
E. Helios-Rybicka ◽  
H. Bril ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Toxic Elements ◽  
Potentially Toxic Elements ◽  
Combined Approach

scholarly journals Quantification of Potentially Toxic Elements in Degraded Mining Soils and Medicinal Plants: A Case Study of Indus Kohistan Region Northern Pakistan

2021 ◽  
Author(s):  
Waseem sardar ◽  
Aziz Ur Rahman ◽  
javed nawab ◽  
Sardar Khan ◽  
Abid Ali ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Toxic Elements ◽  
Translocation Factor ◽  
Contamination Factor ◽  
Absorption Spectrometry ◽  
Potentially Toxic Elements ◽  
Pollution Indices ◽  
Mining Wastes ◽  
Mining Soil ◽  
Open Dumping

Abstract In recent years, a series of environmental and ecological problems have occurred due to enhanced anthropogenic disturbances for precious minerals mining. Traditional medicines have become an important pillar in national homeopathic treatment system especially in mountainous environment of developing countries. The current study investigates the level of potentially toxic elements ( PTEs ) contamination in degraded mining soil and medicinal plants along the mafic-ultramafic rocks in the Kohistan region. Soil samples and medicinal plant species were collected from the degraded mining area and were screened for PTEs (Pb, Cr, Ni, Mn, Zn, and Cd) using atomic absorption spectrometry. Various pollution indices were used for PTEs such as contamination factor (CF), pollution load index (PLI) and translocation factor (TF) in degraded mining soil and medicinal plants. The mean concentration of PTEs found in soil were in order of Mn>Ni>Cr >Pb>Zn>Cd, while in medicinal plants were Pb>Cr>Mn>Ni>Zn>Cd. Highest bioaccumulation was observed in Ajuga bracteosa (Cr=349 mg kg –1 ), Phlomis bracteosa (Pb=335 mg kg –1 ), Chenopodium ambrosioides (Mn = 304.3 mg kg –1 ), Isatis costata (Ni=169 mg kg –1 ), Ajuga parviflora (Zn = 38.4 mg kg –1 ) and Salvia moorcoftiana (Cd=11 mg kg –1 ). Furthermore, the concentrations of PTEs were significantly higher ( p <0.001) in degraded mining soil and medicinal plants than the reference site, which may be attributed to the mining and open dumping of mining wastes. The present study revealed that chromite mining and open dumping of mining wastes can cause serious environmental problem in the study area. Furthermore, medicinal plants grown in degraded mining soil may pose risk to the local inhabitants as most of the people consume these plants for various health problems.

scholarly journals Toward a New Way for the Valorization of Miscanthus Biomass Produced on Metal-Contaminated Soils Part 1: Mesocosm and Field Experiments

2020 ◽  
Vol 12 (22) ◽  
pp. 9370
Author(s):  
Marie Hechelski ◽  
Brice Louvel ◽  
Pierrick Dufrénoy ◽  
Alina Ghinet ◽  
Christophe Waterlot
Keyword(s):  
Organic Chemistry ◽  
Contaminated Soils ◽  
Lewis Acids ◽  
Toxic Elements ◽  
Field Experiments ◽  
Calcium Phosphates ◽  
Renewable Resource ◽  
Potentially Toxic Elements ◽  
Miscanthus Giganteus ◽  
P Fertilizers

The effects of P-fertilizers (mono- and di-calcium phosphates) on the bioavailability of metals and nutrients in leaves and stems of Miscanthus × giganteus were studied in mesocosm and field experiments in order to propose a new way for the valorization of miscanthus biomass. The concentration of potentially toxic elements was generally higher in stems than in leaves. Although P-fertilizers were added to contaminated soils under sustainable conditions (from 0.022% to 0.026% w/w), the average of leaf and stem biomass generally increased in the presence of P-fertilizers due to the changes in the speciation of phosphorus. Leaves of the investigated miscanthus may be of great interest as a catalyst in organic chemistry, since the Ca concentration was up to 9000 mg kg−1 DW. Stems represent a potential biomass that can be used as renewable resource of Lewis acids, currently used in organic syntheses (the sum of Zn, Cu, Mn, Fe, Mg, Si and Al was near 1000 mg kg−1 DW). The percentage of Cd and Pb in leaves and stems of miscanthus did not significantly change with P-fertilizers. Depending on the mesocosm and field experiments, it ranged from 0.004% to 0.016% and from 0.009% and 0.034% for Cd in leaves and stems, respectively, and from 0.004% to 0.015% and from 0.009% and 0.033% for Pb in leaves and stems, respectively.

Possibility to use soils from abandoned mining area for agricultural aims

2021 ◽  
Author(s):  
Sabina Rossini-Oliva ◽  
Erika S. Santos ◽  
Maria Manuela Abreu
Keyword(s):  
Contaminated Soils ◽  
Toxic Elements ◽  
Animal Health ◽  
Plant Cover ◽  
Mining Area ◽  
Potentially Toxic Elements ◽  
Abandoned Mines ◽  
Mine Wastes ◽  
Total N ◽  
Accumulation Pattern

&lt;p&gt;In many countries is quite common that abandoned mines are close to agricultural areas and might be used for plant food cultivation or animal grazing. However, soils adjacent to mining areas and/or developed on mine wastes can be a source of potentially toxic elements (PTE) for plants. This might be a potentially risk for human and animal health needing to be monitored before taking a decision.&lt;/p&gt;&lt;p&gt;Ferragudo is an abandoned Fe&amp;#8211;Mn mine located in SW of Portugal (Beja district) considered with intermediate level of environmental hazard impact due to small volumes of mine wastes with relatively low total concentrations of PTE, except for Mn. In this area holm oak woodland was implemented and soils are usually used for grassland. Animals such as cow, sheep and goat graze in this mining area. Chemical characterization of soil-plant system and potential human health risks of the plants associated with soil contamination were assessed. Samples of oak and grass (total n=8 each) were collected (spring 2017) and composite soil samples around plants, up to 10 cm depth were also collected. Soil properties were analyzed and concentrations of macro and micronutrients in soils and plants (shoots) were determined.&lt;/p&gt;&lt;p&gt;No statistical differences were observed between soils around grass and oak for all the studied parameters. Soils had a pH close to neutral and a good fertility. The mean total content in soils was 86.12 and 88.36 g Mn/kg, and 47.58 and 48.45 g Fe/kg around grass and oak, respectively. These values are higher than the average concentrations in non-contaminated soils of the region (0.74 g Mn/kg and 36.83 g Fe/kg). The Mn and Fe concentration in the soils available fraction (Rhizo method) was lower compared to total (397&amp;#8211;441 mg Mn/kg and 18&amp;#8211;11 mg Fe/kg in oak and grass, respectively). The concentration in the available fraction of other potentially toxic elements such as Cu and Zn was very low. Although the soils had high concentrations of Mn and Fe, the plant cover is significant and soils are totally colonized by herbaceous plants. Studied species showed a different accumulation pattern for the studied elements except for Cu. Quercus ilex showed concentrations of Fe in leaves (mean 158 mg/kg) lower than in grasses (mean 272 mg Fe/kg) while the opposite pattern was observed for Mn (mean 1363 mg/kg for oak and 353 mg/kg for grasses). Manganese concentrations in oak leaves were much greater than the normal range for mature leaf tissues but non-toxic for cattle and other domestic animals. The Fe concentration in the aerial part of both plants was much lower than the maximum tolerable value for cattle, sheep and poultry and also lower than the range considered normal for plants. Copper and Zn concentration in oak and grass was below the normal values for plants and lower than toxic levels for cattle. The concentration of Mn and Fe in the aerial parts of the studied plant species did not reach toxic levels for animal graze, indicating that these soils can be used for pasture.&lt;/p&gt;

scholarly journals Uptake Prediction of Eight Potentially Toxic Elements by Pistia stratiotes L. Grown in the Al-Sero Drain (South Nile Delta, Egypt): A Biomonitoring Approach

2021 ◽  
Vol 13 (9) ◽  
pp. 5276
Author(s):  
Ebrahem M. Eid ◽  
Mohammed A. Dakhil ◽  
Loutfy M. Hassan ◽  
Shaimaa G. Salama ◽  
Tarek M. Galal
Keyword(s):  
Toxic Elements ◽  
Goodness Of Fit ◽  
Nile Delta ◽  
Translocation Factor ◽  
Potentially Toxic Elements ◽  
Pistia Stratiotes ◽  
Monthly Basis ◽  
Shoot System ◽  
Floating Macrophyte ◽  
Long Term Impact

The potential to utilise the free-floating macrophyte Pistia stratiotes L. to survey contamination of the Al-Sero Drain in the South Nile Delta, Egypt, by eight potentially toxic elements (PTEs) was investigated in this study. This study considered the absorption of eight PTEs (Cd, Co, Cu, Fe, Mn, Ni, Pb, and Zn), and the evaluated P. stratiotes were located in three sampling locations along the Al-Sero Drain, with sampling conducted in both monospecific and homogenous P. stratiotes. Samples of both types of P. stratiotes and water were collected on a monthly basis between May 2013 and April 2014 at each location, utilising three randomly chosen 0.5 × 0.5 m quadrats. Regression models were designed to predict the concentration of the PTEs within the plant’s shoot and root systems. Elevated water Fe levels were correlated with a rise in shoot system Fe concentration, whereas higher Ni concentrations in the water led to a higher Ni concentration within the root system. The latter was also true for Pb. Water Cu levels had a negative association with the Cu concentration within the P. stratiotes shoot system. Raised Fe levels were also correlated with a diminished Fe level within the roots. For all PTEs, P. stratiotes was characterised by a bioconcentration factor of more than 1.0, and for the majority by a translocation factor of less than 1.0. The goodness of fit for most of the designed models, as indicated by high R2 values and low mean averaged errors, demonstrated the associations between actual and predicted PTE concentrations. Any disparity between measured and predicted parameters failed to reach significance with Student t-tests, reinforcing the predictive abilities of the designed models. Thus, these novel models have potential value for the prediction of PTE uptake by P. stratiotes macrophytes inhabiting the Al-Sero Drain. Furthermore, the macrophyte’s constituents indicate the long-term impact of water contamination; this supports the potential future use of P. stratiotes for biomonitoring the majority of the PTEs evaluated in this study.

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