scholarly journals Evaluation of Phytoremediation Potential of Castor Cultivars for Heavy Metals from Soil

2019 ◽  
Vol 37 ◽  
Author(s):  
M.J. KHAN ◽  
N. AHMED ◽  
W. HASSAN ◽  
T. SABA ◽  
S. KHAN ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Metal Uptake ◽  
Plant Biomass ◽  
Ricinus Communis ◽  
Contaminated Sites ◽  
Heavy Metal Uptake ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT: Phytoremediation is a useful tool to restore heavy metals contaminated soils. This study was carried out to test two castor (Ricinus communis) cultivars [Local and DS-30] for phytoextraction of heavy metals from the soil spiked by known concentrations of seven metals (Cu, Cr, Fe, Mn, Ni, Pb and Zn). A pot experiment was laid out by using a completely randomized design. Soil and plant samples were analyzed at 100 days after planting. The data on heavy metal uptake by plant tissues (roots, leaves and shoots) of the two castor cultivars suggested that a considerable amount of metals (Fe = 27.18 mg L-1; Cu = 5.06 mg L-1; Cr = 2.95 mg L-1; Mn = 0.22 mg L-1; Ni = 4.66 mg L-1; Pb = 3.33 mg L-1; Zn = 15.04 mg L-1) was accumulated in the plant biomass. The soil heavy metal content at the end of experiment significantly decreased with both cultivars, resulting in improved soil quality. Therefore, it is concluded that both castor cultivars, Local and DS-30, can be used for phytoremediation of heavy metal-contaminated sites.

scholarly journals Uptake of Heavy Metals from Urban Wastewater Contaminated Soils by Using Selected Crop Species of Mysuru City, India

2016 ◽  
Vol 4 (3) ◽  
pp. 553
Author(s):  
Abhilash M.R ◽  
Srikantaswamy S ◽  
Shiva Kumar D
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Metal Uptake ◽  
Field Experiments ◽  
Ecological Factors ◽  
Field Studies ◽  
Contaminated Sites ◽  
Urban Wastewater ◽  
Crop Species

<div><p><em>Heavy metals are among the most important sorts of pollutant in the environment. Numerous 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. F</em><em>actors influencing heavy metal uptake by Crops were studied by pot and field experiments in Mysuru City, India. Results concern with soils is contaminated with Urban Wastewater. In this paper demonstrated effects on the heavy metal content of eight cultivated crop species, in three wastewater contaminated sites of Mysuru City. Interaction between ecological factors and crop characters was demonstrated, as well as results of pot and field studies were compared. Tested plant species were grouped on the basis of their accumulation capability and susceptibility of heavy metals.</em></p></div>

scholarly journals Amelioration of Heavy Metals from Contaminated Soils of Hazaribagh and Tejgaon Areas from Bangladesh Using Red Mud

1970 ◽  
Vol 44 (4) ◽  
pp. 479-484 ◽  
Author(s):  
AS Chamon ◽  
MN Mondol ◽  
SM Ullah
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Red Mud ◽  
Contaminated Soils ◽  
Metal Uptake ◽  
Tomato Fruit ◽  
Wheat Variety ◽  
Dry Weight ◽  
Wheat Grain ◽  
Heavy Metal Uptake

Pot experiments with soil from two heavy metals contaminated sites were conducted. The objective of the experiment was to test red mud as an inorganic soil amendment to reduce heavy metal uptake and to alleviate toxicity in tomato (variety- Ratan) and wheat (variety- Agrani) crops. Iron (Fe) oxides contained in red mud, a byproduct of the aluminum industry, reduced soil to plant transfer of zinc (Zn), nickel (Ni), cadmium (Cd), and chromium (Cr). In Hazaribagh soil, tomato fruit yield (dry weight) increased by 72%. Shoot length and biomass production were positively influenced by red mud containing high amounts of Fe2O3. Heavy metal uptake into tomato plants was significantly ameliorated in both soil. On Tejgaon soil the effect of red mud on wheat grain yield production was not significantly different but the ameliorative effect of red mud application was clearly observed in the wheat grain samples for Tejgaon soil. Key words: Red Mud; Wheat; Tomato; Remediation; Heavy metals DOI: 10.3329/bjsir.v44i4.4602 Bangladesh J. Sci. Ind. Res. 44(4), 479-484, 2009

Enhanced heavy metal uptake by activated sludge cultures grown in the presence of biopolymer stimulators

1996 ◽  
Vol 34 (5-6) ◽  
pp. 267-272 ◽  
Author(s):  
Ken Fukushi ◽  
Duk Chang ◽  
Sam Ghosh
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Activated Sludge ◽  
G Protein ◽  
Metal Uptake ◽  
Heavy Metal Uptake ◽  
Culture Viability ◽  
Grown Culture

The objective of this research was to investigate the feasibility of developing improved activated sludge cultures capable of removing heavy metals. Cystine, peptone, and β-glycerophosphate (BGP) stimulated metal uptake without the significant reduction of culture viability otherwise experienced in the absence of these chemicals. The cystine-peptone-BGP-grown culture exhibited the highest removal of copper and cadmium of 5.67 and 2.53 mM/g protein, respectively.

scholarly journals Kestabilan Inokulan Azotobacter selama Penyimpanan pada Dua Suhu

2012 ◽  
Vol 14 (1) ◽  
pp. 52
Author(s):  
Reginawanti Hindersah ◽  
Rija Sudirja
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Root Growth ◽  
Contaminated Soil ◽  
Metal Uptake ◽  
Room Temperature ◽  
Heavy Metal Uptake ◽  
Total N ◽  
The Stability ◽  
Temperature Storage

Azotobacter might be used as biological agents in bioremediation of heavy metal-contaminated soil since this rhizobacteria produceexopolysachharides (EPS) that mobilize soil heavy metals, and phytohormones that regulate root growth. So that heavy metal uptake bythe roots could be increased. The objective of this research was to verify the stability of EPS and phytohormones in Azotobacter liquidinoculants during four months in different temperature storage. Liquid inoculants has been produced in EPS-induced media and stored in200C and room temperature (24-270C) during four months. The results showed that the better temperature storage was room temperatureinstead of 20 0C since pH, total N, and EPS and phytohormones content was relatively stable during storage.

A route to robust thioether-functionalized MOF solid materials displaying heavy metal uptake and the ability to be further oxidized

2017 ◽  
Vol 46 (36) ◽  
pp. 12036-12040 ◽  
Author(s):  
Guo-Wei Xiao ◽  
Teng-Fei Chen ◽  
Xin-Zhan Sun ◽  
Hui Guo ◽  
Zhong-Feng Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ligand Exchange ◽  
Metal Uptake ◽  
Alternative Strategy ◽  
Heavy Metal Uptake ◽  
Solid Materials ◽  
Exchange Method

A facile and mild solvent-assisted ligand exchange method was developed as an alternative strategy to achieve thioether-based MOFs, and their oxidized forms, that were able to take up heavy metals from solutions and capture CO2.

scholarly journals Effects of Ectomycorrhizal Fungi and Heavy Metals (Pb, Zn, and Cd) on Growth and Mineral Nutrition of Pinus halepensis Seedlings in North Africa

2020 ◽  
Vol 8 (12) ◽  
pp. 2033
Author(s):  
Chadlia Hachani ◽  
Mohammed S. Lamhamedi ◽  
Claudio Cameselle ◽  
Susana Gouveia ◽  
Abdenbi Zine El Abidine ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
North Africa ◽  
Mineral Nutrition ◽  
Contaminated Soils ◽  
Mycorrhizal Fungi ◽  
Pinus Halepensis ◽  
Translocation Factor ◽  
Contaminated Sites ◽  
High Concentrations

The pollution of soils by heavy metals resulting from mining activities is one of the major environmental problems in North Africa. Mycorrhizoremediation using mycorrhizal fungi and adapted plant species is emerging as one of the most innovative methods to remediate heavy metal pollution. This study aims to assess the growth and the nutritional status of ectomycorrhizal Pinus halepensis seedlings subjected to high concentrations of Pb, Zn, and Cd for possible integration in the restoration of heavy metals contaminated sites. Ectomycorrhizal and non-ectomycorrhizal P. halepensis seedlings were grown in uncontaminated (control) and contaminated soils for 12 months. Growth, mineral nutrition, and heavy metal content were assessed. Results showed that ectomycorrhizae significantly improved shoot and roots dry masses of P. halepensis seedlings, as well as nitrogen shoot content. The absorption of Pb, Zn, and Cd was much higher in the roots than in the shoots, and significantly more pronounced in ectomycorrhizal seedlings—especially for Zn and Cd. The presence of ectomycorrhizae significantly reduced the translocation factor of Zn and Cd and bioaccumulation factor of Pb and Cd, which enhanced the phytostabilizing potential of P. halepensis seedlings. These results support the use of ectomycorrhizal P. halepensis in the remediation of heavy metal contaminated sites.

scholarly journals Silicon Mechanisms to Ameliorate Heavy Metal Stress in Plants

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Abolghassem Emamverdian ◽  
Yulong Ding ◽  
Yinfeng Xie ◽  
Sirous Sangari
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Enzyme Activity ◽  
Metal Uptake ◽  
Ph Value ◽  
Anthropogenic Activities ◽  
Heavy Metal Stress ◽  
Heavy Metal Uptake ◽  
Stimulation Of

The increased contaminants caused by anthropogenic activities in the environment and the importance of finding pathways to reduce pollution caused the silicon application to be considered an important detoxification agent. Silicon, as a beneficial element, plays an important role in amelioration of abiotic stress, such as an extreme dose of heavy metal in plants. There are several mechanisms involved in silicon mediation in plants, including the reduction of heavy metal uptake by plants, changing pH value, formation of Si heavy metals, and stimulation of enzyme activity, which can work by chemical and physical pathways. The aim of this paper is to investigate the major silicon-related mechanisms that reduce the toxicity of heavy metals in plants and then to assess the role of silicon in increasing the antioxidant enzyme and nonenzyme activities to protect the plant cell.

scholarly journals Fungal Community Diversity of a Heavy Metal Contaminated Soils Revealed by Metagenomics

2021 ◽  
Author(s):  
Michel Rodrigo Zambrano Passarini ◽  
Júlia Ronzella Ottoni ◽  
Paulo Emílio Santos Costa ◽  
Denise Cavalvante Hissa ◽  
Raul Maia Falcão ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Heavy Metal Contamination ◽  
Community Diversity ◽  
Fungal Communities ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Toxic Compounds ◽  
Metagenomic Approach

Abstract The inappropriate disposal of toxic compounds generated by industrial activity has been impacting to the environment considerably. Microbial communities inhabiting contaminated sites may represent interesting ecological alternatives for the decontamination of environments. The present work aimed to investigate the fungal diversity inhabiting sediments from industrial waste containing heavy metals by using metagenomic approach. A total of twelve fungal orders were retrieved from datasets and, at phylum level, Ascomycota was the most abundant, followed by Basidiomycota, Chytridiomycota and Blastocladiomycota. Higher abundance of sequences was encountered within the less contaminated site, while the lower abundance was found in the sample with the higher contamination with lead. Gene sequences related to DNA repair and heavy metals biosorption processes were found in the four samples analyzed. The genera Aspergillus and Chaetomium, and Saccharomycetales order were highly present within all samples, showing their potential to be used for bioremediation studies. The present work demonstrated the importance of using the metagenomic approach to understand the dynamics of fungal communities and their behavior under heavy metal contamination, aiming the use in bioremediation processes of environments contaminated with heavy metals.

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