scholarly journals Transfer and Accumulation of Some Heavy Metals in Native Vegetation Plants

2019 ◽  
pp. 1-10 ◽  
Author(s):  
Mashael M. Alsihany ◽  
Adel M. Ghoneim ◽  
Najat A. Bukhari
Keyword(s):  
Heavy Metals ◽  
Translocation Factor ◽  
Cost Effective ◽  
Prosopis Juliflora ◽  
Accumulation Coefficient ◽  
Rhazya Stricta ◽  
Riyadh City ◽  
Conocarpus Erectus ◽  
Cost Effective Method ◽  
One Year

Phytoremediation procedure can be defined as the use of selected plants in order to eliminate some heavy metals from the soil, or wastewater in a cost-effective method. This study aimed to investigate the concentrations of heavy metals such as Cd, Pb, Cu, Zn and Cr in soils and vegetation plants grown in Wadi Hanifa, Riyadh city, Kingdom of Saudi Arabia. Five sites have been chosen for collected plant samples (shoot and root) for one year, and five plant species have been chosen which distributed in the study area including Ziziphus spina-christi, Prosopis juliflora, Rhazya stricta, Ochradenus baccatus and Conocarpus erectus. Determination of Cd, Pb, Cu, Zn and Cr has been done with ICP. Accumulation coefficient (AC), and translocation factor (TF) have been calculated to evaluate the ability of selected plants to extract the heavy metals from soil. The results indicated that Ziziphus spina-christi and Conocarpus erectus showed the high ability to accumulate the Pb and Zn in its root and shoot compared with other plants. The trend of heavy metal translocation factors for different plants was in the order of Cd > Cr > Pb > Cu > Zn. The accumulation coefficient (AC) of the Cd, Pb, Zn, Cu and Cr in the roots/soil of Ziziphus spina-christi, Prosopis juliflora, Rhazya stricta, Ochradenus baccatus and Conocarpus erectus were varied from 0.80 to 3.60. The order of AC in the shoot as follows: Pb > Cu > Zn > Cr > Cd, while in roots of as follows: Cd > Cr > Pb > Cr > Zn.

scholarly journals Monitoring the Efficiency of Rhazya stricta L. Plants in Phytoremediation of Heavy Metal-Contaminated Soil

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1057
Author(s):  
Ehab Azab ◽  
Ahmad K. Hegazy
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soil ◽  
Large Scale ◽  
Translocation Factor ◽  
Cost Effective ◽  
Polluted Soil ◽  
Green Technology ◽  
Polluted Soils ◽  
Rhazya Stricta

Heavy metal-contaminated soil constitutes many environmental concerns. The toxic nature of heavy metals poses serious threats to human health and the ecosystem. Decontamination of the polluted soil by phytoremediation is of fundamental importance. Vegetation is an appealing and cost-effective green technology for the large-scale phytoremediation of polluted soils. In this paper, a greenhouse experiment was carried out to test the potential of Rhazya stricta as a heavy metal phytoremediator in polluted soil. Plants were grown for three months in pots filled with soils treated with the heavy metals Cd, Pb, Cu, and Zn at rates of 10, 50, and 100 mg/kg. The bioaccumulation factor (BCF) and translocation factor (TF) were calculated to detect the ability of R. stricta to accumulate and transfer heavy metals from soil to plant organs. The results showed that under increasing levels of soil pollution, the bioconcentration of Cd and Zn heavy metals showed the highest values in plant roots followed by leaves, whereas in the case of Pb and Cu, roots showed the highest values followed by stems. Heavy metals accumulation was higher in roots than in stems and leaves. The BCF of Zn reached the highest values in roots and stems for 10 mg/kg soil treatment, followed by the BCFs of Cd, Cu, and Pb. The TF for the different heavy metal pollutants’ concentrations was less than unity, suggesting that the plants remediate pollutants by phytostabilization. The TF values ranged from higher to lower were in the order Zn > Cu > Cd > Pb. The rapid growth of R. stricta and its tolerance of heavy metals, as well as its ability to absorb and accumulate metals within the plant, recommends its use in the phytoremediation of slightly polluted soils in arid lands by limiting the heavy metals transport.

scholarly journals A review on phytoremediation as an ecological method for in situ clean up of heavy metals contaminated soils

2019 ◽  
Vol 112 ◽  
pp. 03024 ◽  
Author(s):  
Nicolae Cioica ◽  
Cătălina Tudora ◽  
Dorin Iuga ◽  
György Deak ◽  
Monica Matei ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Contaminated Soils ◽  
Crop Yields ◽  
Agricultural Soils ◽  
Animal Health ◽  
Cost Effective ◽  
Current State ◽  
Cost Effective Method ◽  
Excessive Accumulation

Heavy metals are among the most common types of contaminants in agricultural soils, especially those bordering the cities, due to the uncontrolled use of sewage sludge, compost, mining waste and chemical fertilizers. Excessive accumulation of heavy metals, which do not degrade over time, adversely affects crop yields by decreasing microbial activity and fertility of contaminated soils. Also, excess of heavy metals in the soil poses a serious threat to plant and animal health and, through their entry into the food chain, to human health. For this reason, the decontamination of soils contaminated with heavy metals has become a necessity. This review presents the current state of phytoremediation research as the most cost-effective method of in-situ environmental decontamination of soils contaminated with heavy metals.

scholarly journals Heavy Metals Accumulation in Rhazya stricta L. Plant Growing on Industrial Wastewater of Riyadh City, Saudi Arabia

2014 ◽  
Vol 14 (17) ◽  
pp. 2007-2010 ◽  
Author(s):  
Adel M. Ghoneim ◽  
Soud S. Al-Zahr ◽  
Sallem E. El-Magh ◽  
Abdullah S. Al-Farr
Keyword(s):  
Heavy Metals ◽  
Saudi Arabia ◽  
Industrial Wastewater ◽  
Heavy Metals Accumulation ◽  
Rhazya Stricta ◽  
Riyadh City ◽  
Metals Accumulation

scholarly journals Phytoremediation of Heavy Metal Industrial contaminated soil by Spiracia oleracea L and Zeamays L

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Abhilash M.R ◽  
Srikantaswamy S ◽  
Shiva Kumar D ◽  
Jagadish K ◽  
Shruthi L
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soil ◽  
Environmental Problem ◽  
Negative Impact ◽  
Translocation Factor ◽  
Cost Effective ◽  
Technological Solution ◽  
Metal Pollutants ◽  
Environmental Friendly

<em>Present days, environment is filled up with a large quantity of toxicants including heavy metals in dissimilar forms. Heavy metal pollution is a significant environmental problem and has its negative impact on human health and agriculture. Several methods already used to clean up the environment from these kinds of contaminants, but most of them are costly and difficult to get optimum results. Currently, phytoremediation is an effective and affordable technological solution used to extract or remove inactive metals and metal pollutants from contaminated soil and water. This technology is environmental friendly and potentially cost effective. This article reports about the mobility, bio-availability and Phytoremediational response of plant in heavy metals in Industrial contaminated soil<strong> </strong>of Mysuru City, additionally Translocation factor (TF) and Biological Concentration Factor (BCF) also carried to know the ability of the Spiracia oleracea L and Zeamays L.</em>

scholarly journals Effects of sewage sludge on bio-accumulation of heavy metals in tomato seedlings

2016 ◽  
Vol 14 (4) ◽  
pp. e0807 ◽  
Author(s):  
Nada Elloumi ◽  
Dalel Belhaj ◽  
Boutheina Jerbi ◽  
Mohamed Zouari ◽  
Monem Kallel
Keyword(s):  
Heavy Metals ◽  
Stomatal Conductance ◽  
Sewage Sludge ◽  
Chlorophyll Content ◽  
Cost Effective ◽  
Total N ◽  
Tomato Seedlings ◽  
Solanum Lycopersicum L ◽  
Application Rates ◽  
Cost Effective Method

The proposal to use sewage sludge (SS) on agricultural fields as a sustainable way to dispose of the waste is based on its high organic and nutrients content. However, the presence of heavy metals (HMs) in sludge can contaminate crops and accumulate in the food chain. The aim of this study was to assess changes in soil fertility, biochemical responses of tomato (Solanum lycopersicum L. cv. Rio Grande) seedlings and the availability of HMs with increased rate application of SS (0, 2.5, 5 and 7.5%). Leaf chlorophyll content, nutritional status, proline, membrane peroxidation, stomatal conductance and HM accumulation were investigated. Results showed that the soil pH decreased, whereas soil salinity, organic carbon, total N, available P and exchangeable Na, Ca, K and HM content increased significantly with increasing application rates of SS. Among the three HMs (Zn, Cu and Cr), Zn had the highest capacity for transferring from soil into plants. Low metal translocation was observed from roots to leaves. The 7.5% SS dose decreased biomass production and caused a decline in chlorophyll content and stomatal conductance. However, lipid peroxidation and proline contents increased. Therefore, the use of 2.5 and 5% doses of sewage sludge in agriculture would be an efficient and cost-effective method to restore the fertility of soil and an environment-friendly solution for disposal problems.

scholarly journals Net Returns for Seasonal Workers Based on a Limited Department of Labour (DOL) Audit of Wages, Hours and Costs/Deductions

1970 ◽  
Author(s):  
Sankar Ramasamy
Keyword(s):  
New Zealand ◽  
Cost Effective ◽  
Net Return ◽  
Work Settings ◽  
Seasonal Workers ◽  
Net Returns ◽  
Cost Effective Method ◽  
One Year

Do workers financially gain by coming to New Zealand under the Recognised Seasonal Employer (RSE) policy? This question among others attracted wide attention when the policy completed one year since implementation. Given that workers from the kick Start Pacific states work in a range of work settings, the Department of Labour undertook a sample audit of RSE employers during mid-2008. The audit was considered a cost-effective method to provide reliable estimates of what workers potentially earned and their likely net returns after costs and deductions. The results showed that on average workers had a net return of around NZ$6,000. This is early indicative evidence and note that the audit primarily covered a part of the year when the weather and work availability was more settled.

scholarly journals Screening of Native Plants Growing on a Pb/Zn Mining Area in Eastern Morocco: Perspectives for Phytoremediation

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1458 ◽  
Author(s):  
Said El Hasnaoui ◽  
Mouna Fahr ◽  
Catherine Keller ◽  
Clément Levard ◽  
Bernard Angeletti ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Plant Species ◽  
Native Plants ◽  
Organic Matter Content ◽  
Translocation Factor ◽  
Matter Content ◽  
Native Plant ◽  
Stipa Tenacissima ◽  
Accumulation Coefficient ◽  
Eastern Morocco

Screening of native plant species from mining sites can lead to identify suitable plants for phytoremediation approaches. In this study, we assayed heavy metals tolerance and accumulation in native and dominant plants growing on abandoned Pb/Zn mining site in eastern Morocco. Soil samples and native plants were collected and analyzed for As, Cd, Cu, Ni, Sb, Pb, and Zn concentrations. Bioconcentration factor (BCF), translocation factor (TF), and biological accumulation coefficient (BAC) were determined for each element. Our results showed that soils present low organic matter content combined with high levels of heavy metals especially Pb and Zn due to past extraction activities. Native and dominant plants sampled in these areas were classified into 14 species and eight families. Principal components analysis separated Artemisia herba-alba with high concentrations of As, Cd, Cu, Ni, and Pb in shoots from other species. Four plant species, namely, Reseda alba, Cistus libanotis, Stipa tenacissima, and Artemisia herba-alba showed strong capacity to tolerate and hyperaccumulate heavy metals, especially Pb, in their tissues. According to BCF, TF, and BAC, these plant species could be used as effective plants for Pb phytoextraction. Stipa tenacissima and Artemisia herba-alba are better suited for phytostabilization of Cd/Cu and Cu/Zn, respectively. Our study shows that several spontaneous and native plants growing on Pb/Zn contaminated sites have a good potential for developing heavy metals phytoremediation strategies.

scholarly journals Vermicompost Assisted Phytoremediation of Heavy Metal Contaminated Soil in Madaka District, Nigeria Using Melissa officinalis L (Lemon balm) and Sida acuta (Stubborn weed)

2021 ◽  
Author(s):  
sesan abiodun aransiola ◽  
Udeme Joshua Joshia Ijah ◽  
Olabisi Peter Abioye ◽  
Jeremiah David Bala
Keyword(s):  
Heavy Metals ◽  
Structural Changes ◽  
Translocation Factor ◽  
Plant Growth Promoting Bacteria ◽  
Accumulation Coefficient ◽  
Sida Acuta ◽  
Plant Parts ◽  
Plant Growth Promoting ◽  
Goat Manure ◽  
Assisted Phytoremediation

Abstract This research was designed to clean-up through an environmentally friendly techniques, a polluted environment of Madaka District of Shikira. Physicochemical properties of the soil were done using standard methods. Chicken dropping vermicompost (CDV) and goat manure vermicompost (GMV) were produced by standard method to assist the phytoremediation process with plant growth promoting bacteria (PGPB). Canonical discriminant functions of the heavy metals were done. For the first location (AK) the plant parts of M. officinalis L mopped up heavy metals, the concentration of Cd, As, Pb in plant parts varied from 0.007 to 0.33 mg/kg, As from 0.09 to 4.39 mg/ kg and Pb from 0.07 to 10.35 mg/kg respectively while the concentration of heavy metals in S. acuta parts had Cd, As, Pb varied from 0.002 to 0.43 mg/kg, As from 0.27 to 3.79 mg/ kg and Pb from 1.68 to 10.7 mg/kg respectively. The second location (AM) also had the two plants mopping up heavy metals at different concentrations. the concentration of Cd, As, Pb in M. officinalis L parts varied from 0.03 to 0.41 mg/kg, As from 0.65 to 4.65 mg/ kg and Pb from 1.93 to 11.49 mg/kg respectively while the concentration of heavy metals in S. acuta parts had Cd, As, Pb varied from 0.06 to 0.66 mg/kg, As from 0.68 to 4.64 mg/ kg and Pb from 1.53 to 11.53 mg/kg respectively. Melissa offinalis L and Sida acuta were found most suitable for phytoextraction of sites contaminated with Cd, As and Pb because both of them have their bioconcentration factor (BCF), translocation factor (TF) and biological accumulation coefficient (BAC) to be ˃1 while both were also scored as phytostabilizer because they have BCF ˃1 and TF ˂1. Soil structural changes pre and post remediation were determined through x-ray fluorescence (XRF spectroscopy) and scanning electron microscopy (SEM) analyses.

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