Designing of dual biosensor system for detection of zinc and chromium from contaminated soil using saponin biosurfactant and bioluminescence bacteria

2020 ◽  
pp. 1-11
Author(s):  
Reza Hajimohammadi ◽  
Mohammad Johari -Ahar ◽  
Sajjad Ahmadpour
Keyword(s):  
Contaminated Soil ◽  
Biosensor System ◽  
Bioluminescence Bacteria

scholarly journals Biosensor Design for Detection of Mercury in Contaminated Soil Using Rhamnolipid Biosurfactant and Luminescent Bacteria

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Aziz Babapoor ◽  
Reza Hajimohammadi ◽  
Seyyed Mohammad Jokar ◽  
Meysam Paar
Keyword(s):  
Contaminated Soil ◽  
Toxic Metal ◽  
Aeration Rate ◽  
Mercury Toxicity ◽  
Luminescent Bacteria ◽  
Sample Extract ◽  
Biosensor System ◽  
Rhamnolipid Biosurfactant ◽  
Metal Contaminant

In this study, a biosensor is designed to remove mercury as a toxic metal contaminant from the soil. The rhamnolipid biosurfactant was used to extract the mercury sorbed to soil to the aqueous phase. An immobilized bioluminescent bacterium (Escherichia coli MC106) with pmerRBPmerlux plasmid is assisted for mercury detection. A significant decrease in luminescence level was observed in a biosensor system containing contaminated soil sample extract. The concentrations of extracting mercury are well correlated with the mercury toxicity data obtained from experimental biosensor systems according to the RBL value. The optimum aeration rate of 20 ml/min was obtained for the biosensor systems. The advantage of such a biosensor is the in situ quantification of mercury as a heavy metal contaminant in soils. Therefore, this system could be proposed as a good biosensor-based alternative for future detection of heavy toxic metals in soils.

An Experimental Study on Geotechnical and Electrical Properties of an Oil-Contaminated Soil at Thi-Qar Governorate/Iraq

2019 ◽  
Vol 10 (3) ◽  
pp. 148
Author(s):  
Nesreen Kurdy Al-Obaidy ◽  
Assad Al-Shueli ◽  
Hawraa Sattar ◽  
Zainab Majeed ◽  
Noor Al Huda Hamid
Keyword(s):  
Experimental Study ◽  
Electrical Properties ◽  
Contaminated Soil

INFLUENCE OF MINERAL SORBENTS ON GROWTH AND DEVELOPMENT OF HORDEUM VULGARE ON SOIL POLLUTED BY BENZ(A)PYRENE

2020 ◽  
Author(s):  
A.I. Barbashev ◽  
◽  
S.N. Sushkova ◽  
T.M. Minkina ◽  
T.S. Dudnikova ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Toxic Effect ◽  
Contaminated Soil ◽  
Growth And Development

The effect of diatomite and tripoli added into the soil artificially contaminated with benzo[a]pyrene was studied. A decrease in the toxic effect of BaP on barley plants was established when diatomite and tripoli were added as ameliorants to contaminated soil. The improvement of plants grown сharacteristics on soils contaminated with BaP with the addition of diatomite and tripoli was shown up to 2-4 times compare to contaminated samples.

THE EFFECT OF BACTERIAL STRAINS ON THE ENZYMATIC ACTIVITY OF SOILS IN IMPACT ZONE OF ATAMAN LAKE

2020 ◽  
Author(s):  
V.V. Zinchenko ◽  
◽  
E.S Fedorenko ◽  
A.V Gorovtsov ◽  
T.M Minkina ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Dehydrogenase Activity ◽  
Contaminated Soil ◽  
Model Experiment ◽  
Impact Zone ◽  
Bacterial Strains ◽  
The Impact

As a result of the model experiment, an increase in the enzymatic activity of meadow chernozem of the impact zone of Ataman Lake with the introduction of a strains mixture of metal-resistant microorganisms into the soil was established. The experiment has shown that the application of bacterial strains increases the dehydrogenase activity of contaminated soil by 51.8% compared to the variant without remediation

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