Evaluation of novel indigenous fungal consortium for enhanced bioremediation of heavy metals from contaminated sites

2020 ◽  
Vol 20 ◽  
pp. 101050 ◽  
Author(s):  
Daizee Talukdar ◽  
Teenu Jasrotia ◽  
Rohit Sharma ◽  
Sundeep Jaglan ◽  
Rajeev Kumar ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Contaminated Sites ◽  
Enhanced Bioremediation ◽  
Fungal Consortium

Modeling Biosurfactant-Enhanced Bioremediation Processes for Petroleum-Contaminated Sites

2010 ◽  
Vol 28 (12) ◽  
pp. 1211-1221 ◽  
Author(s):  
H. Yu ◽  
G. Huang ◽  
B. Zhang ◽  
X. Zhang ◽  
Y. Cai
Keyword(s):  
Contaminated Sites ◽  
Enhanced Bioremediation ◽  
Bioremediation Processes

scholarly journals Anthropic Radioactive Pollution in Romania

2019 ◽  
Vol 25 (3) ◽  
pp. 185-189
Author(s):  
Ioan Zaharie ◽  
Mircea Goloşie
Keyword(s):  
Heavy Metals ◽  
Radioactive Waste ◽  
Food Contamination ◽  
Abandoned Mines ◽  
Contaminated Sites ◽  
Radioactive Pollution ◽  
Radioactive Materials ◽  
Mining Areas ◽  
Industrial Buildings ◽  
Chemical Wastes

Abstract The paper presents some conclusions regarding the identification, processing and monitoring of sites contaminated with heavy and radioactive metals. The following categories of sites have been researched: abandoned mining areas, industrial perimeters for the processing of alloys containing radioactive metals, chemical wastes from the chemical fertilizer industry, railways and run- ways that serve to locate radioactive ores, military sites with forgotten radioactive waste, abandoned mines in which chemical and radioactive materials have been deposited, civil and industrial buildings where radioactive materials were used, tourist resorts affected by anthropic and entropic pollution, cases of radioactive floods and heavy metals from food, contamination of external geographic causes. The research includes the results related to the identification, processing and monitoring of the data of more than 350 contaminated sites.

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 A Review on the Resistance and Accumulation of Heavy Metals by Different Microbial Strains

2022 ◽  
Author(s):  
Madhuri Girdhar ◽  
Zeba Tabassum ◽  
Kopal Singh ◽  
Anand Mohan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Volcanic Eruptions ◽  
Heavy Metal Resistance ◽  
Metal Resistance ◽  
Contaminated Sites ◽  
Bacillus Species ◽  
Polluted Sites ◽  
Pollution Accumulation ◽  
Microbial Strains

Heavy metals accumulated the earth crust and causes extreme pollution. Accumulation of rich concentrations of heavy metals in environments can cause various human diseases which risks health and high ecological issues. Mercury, arsenic, lead, silver, cadmium, chromium, etc. are some heavy metals harmful to organisms at even very low concentration. Heavy metal pollution is increasing day by day due to industrialization, urbanization, mining, volcanic eruptions, weathering of rocks, etc. Different microbial strains have developed very efficient and unique mechanisms for tolerating heavy metals in polluted sites with eco-friendly techniques. Heavy metals are group of metals with density more than 5 g/cm3. Microorganisms are generally present in contaminated sites of heavy metals and they develop new strategies which are metabolism dependent or independent to tackle with the adverse effects of heavy metals. Bacteria, Algae, Fungi, Cyanobacteria uses in bioremediation technique and acts a biosorbent. Removal of heavy metal from contaminated sites using microbial strains is cheaper alternative. Mostly species involved in bioremediation include Enterobacter and Pseudomonas species and some of bacillus species too in bacteria. Aspergillus and Penicillin species used in heavy metal resistance in fungi. Various species of the brown algae and Cyanobacteria shows resistance in algae.

Bacterial Remediation of Chromium From Industrial Sludge

2021 ◽  
pp. 97-125
Author(s):  
Dipankar Roy ◽  
Arup Kumar Mitra
Keyword(s):  
Heavy Metals ◽  
Bacillus Cereus ◽  
Toxic Metals ◽  
Growth Pattern ◽  
Contaminated Sites ◽  
Total Chromium ◽  
Industrial Sludge ◽  
Gram Negative ◽  
Living Organisms ◽  
Chromium Uptake

Chromium-like heavy toxic metals seriously influence the metabolism of living organisms and cause permanent threatening of health. Microorganisms can help to detoxify those hazardous heavy metals in the environment by the process of bioremediation. Two bacterial genera were isolated from industrial sludge designated P1 and P2. From the 16srRNA study, it is revealed that P1 is Bacillus cereus and P2 is Enterobacter sp. They are deposited in NCMR and NCBI and received the accession no. MCC 3868 for P1 and MCC 3788 for P2. P1 is gram positive, motile, and P2 is gram negative, motile. Eighteen antibiotics have been taken for antibiotic assay; P1 is resistant to 12; P2 is resistant to 8 antibiotics. For growth pattern analysis in chromium, three parameters have been selected, and they are temperature, pH, and biomass. In LD50 and above parameters, total chromium uptake by those bacteria in stressed conditions have been recorded. The two bacteria are not antagonistic to each other so they are used to bioremediate chromium from their contaminated sites and also treated as consortium.

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 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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