Changes in metals and polyaromatic hydrocarbon contents of a spent lubrication oil-polluted soil after exposure to sodium azide and hydroxlamine hydrochloride solutions: implications for intrinsic bioremediation

2017 ◽  
Vol 62 (1) ◽  
pp. 57-66
Author(s):  
Beckley Ikhajiagbe ◽  
◽  
Geoffery Anoliefo ◽  
Keyword(s):  
Sodium Azide ◽  
Polluted Soil ◽  
Polyaromatic Hydrocarbon ◽  
Intrinsic Bioremediation ◽  
Lubrication Oil

scholarly journals Remarkable Shift In Structural And Functional Properties of An Animal Charcoal Polluted Soil Accentuated By Inorganic Nutrients Amendment

2020 ◽  
Author(s):  
Lateef Salam ◽  
Oluwafemi S. Obayori
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Functional Properties ◽  
Microbial Community Structure ◽  
Polluted Soil ◽  
Hydrocarbon Degradation ◽  
Intrinsic Bioremediation ◽  
Structural And Functional Properties ◽  
And Function ◽  
Animal Charcoal

Abstract The effects of carbon-free mineral medium (CFMM) amendment on hydrocarbon degradation and microbial community structure and function in an animal charcoal polluted soil was monitored for six weeks in field moist microcosms consisting of CFMM treated soil (FN4) and an untreated control (FN1). Gas chromatographic analysis of hydrocarbon fractions revealed the removal 84.02% and 82.38% and 70.09% and 70.14% aliphatic and aromatic fractions in FN4 and FN1 microcosms in 42 days. Shotgun metagenomic analysis of the two metagenomes revealed a remarkable shift in the microbial community structure of FN4 metagenome with 92.97% of the population belonging to the phylum Firmicutes and its dominant representative genera Anoxybacillus (64.58%), Bacillus (21.47%) and Solibacillus (2.39%). In untreated FN1 metagenome, the phyla Proteobacteria (56.12%), Actinobacteria (23.79%), Firmicutes (11.20%); and the genera Xanthobacter (9.73%), Rhizobium (7.49%) and Corynebacterium (7.35%) were preponderant. Functional annotation of putative ORFs from the two metagenomes revealed the detection of degradation genes for benzoate (pcaD, mhpF, aliB, benD-xylL, benC-xylZ, badH, had, dmpD, ligC, CMLE, pcaL, acd), xylene (mhpF, benD-xylL, benC-xylZ, dmpD, cymB, cmtB), chlorocyclohexane/chlorobenzene (dehH, dhaA, linC, linX, pcpC), toluene (bbsG, bbsC, bbsD, tsaC1), and several others in FN1 metagenome. In FN4 metagenome, only seven hydrocarbon degradation genes namely dmpH, mhpD, bphH, nemA and three others were detected. This study has revealed that CFMM amendment negatively impacts the structural and functional properties of the animal charcoal polluted soil. It also revealed that intrinsic bioremediation of the polluted soil could be enhanced via addition of water and aeration.

scholarly journals Remarkable shift in structural and functional properties of an animal charcoal-polluted soil accentuated by inorganic nutrient amendment

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Lateef Babatunde Salam ◽  
Oluwafemi Sunday Obayori
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Functional Properties ◽  
Microbial Community Structure ◽  
Functional Annotation ◽  
Polluted Soil ◽  
Hydrocarbon Degradation ◽  
Intrinsic Bioremediation ◽  
Structural And Functional Properties ◽  
Animal Charcoal

Abstract Background Soils polluted with animal charcoal from skin and hide cottage industries harbour extremely toxic and carcinogenic hydrocarbon pollutants and thus require a bio-based eco-friendly strategy for their depuration. The effects of carbon-free mineral medium (CFMM) amendment on hydrocarbon degradation and microbial community structure and function in an animal charcoal-polluted soil was monitored for 6 weeks in field moist microcosms consisting of CFMM-treated soil (FN4) and an untreated control (FN1). Hydrocarbon degradation was monitored using gas chromatography-flame ionization detector (GC-FID), and changes in microbial community structure were monitored using Kraken, while functional annotation of putative open reading frames (ORFs) was done using KEGG KofamKOALA and NCBI’s conserved domain database (CDD). Results Gas chromatographic analysis of hydrocarbon fractions revealed the removal of 84.02% and 82.38% aliphatic and 70.09% and 70.14% aromatic fractions in FN4 and FN1 microcosms in 42 days. Shotgun metagenomic analysis of the two metagenomes revealed a remarkable shift in the microbial community structure. In the FN4 metagenome, 92.97% of the population belong to the phylum Firmicutes and its dominant representative genera Anoxybacillus (64.58%), Bacillus (21.47%) and Solibacillus (2.39%). In untreated FN1 metagenome, the phyla Proteobacteria (56.12%), Actinobacteria (23.79%) and Firmicutes (11.20%), and the genera Xanthobacter (9.73%), Rhizobium (7.49%) and Corynebacterium (7.35%), were preponderant. Functional annotation of putative ORFs from the two metagenomes revealed the detection of degradation genes for aromatic hydrocarbons, benzoate, xylene, chlorocyclohexane/chlorobenzene, toluene and several others in FN1 metagenome. In the FN4 metagenome, only seven hydrocarbon degradation genes were detected. Conclusion This study revealed that though CFMM amendment slightly increases the rate of hydrocarbon degradation, it negatively impacts the structural and functional properties of the animal charcoal-polluted soil. It also revealed that intrinsic bioremediation of the polluted soil could be enhanced via addition of water and aeration.

OPTIMIZATION OF HEAVY POLLUTED SOIL FROM OLIVE MILL WASTE THROUGH THE IMPLEMENTATION OF ZEOLITES

2019 ◽  
Vol 18 (6) ◽  
pp. 1297-1309
Author(s):  
Antonis A. Zorpas ◽  
Maria K. Doula ◽  
Vassilis J. Inglezakis ◽  
Jose Pedreno Navvaro ◽  
Dimitrios J. Bilalis
Keyword(s):  
Polluted Soil ◽  
Olive Mill Waste ◽  
Mill Waste ◽  
Olive Mill

Applications of Bentonite to Soil Decontamination

2018 ◽  
Vol 69 (7) ◽  
pp. 1695-1698
Author(s):  
Marin Rusanescu ◽  
Carmen Otilia Rusanescu ◽  
Gheorghe Voicu ◽  
Mihaela Begea
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Laboratory Experiments ◽  
Experimental Studies ◽  
Heavy Metal Concentration ◽  
Polluted Soil ◽  
Raw Material ◽  
Soil Decontamination ◽  
Metal Retention ◽  
Removal Of Heavy Metals

A calcium bentonite from Orasu Nou deposit (Satu Mare Romania) was used as raw material. We have conducted laboratory experiments to determine the influence of bentonite on the degree of heavy metal retention. It has been observed that the rate of retention increases as the heavy metal concentration decreases. Experimental studies have been carried out on metal retention ( Zn) in bentonite. In this paper, we realized laboratory experiments for determining the influence of metal (Zn) on the growth and development of two types of plants (Pelargonium domesticum and Kalanchoe) and the effect of bentonite on the absorption of pollutants. These flowers were planted in unpolluted soil, in heavy metal polluted soil and in heavy metal polluted soil to which bentonite was added to observe the positive effect of bentonite. It has been noticed that the flowers planted in unpolluted soil and polluted with heavy metals to which bentonite has been added, the flowers have flourished, the leaves are still green and the plants whose soils have been polluted with heavy metals began to dry after 6 days, three weeks have yellowish leaves and flowers have dried. Experiments have demonstrated the essential role of bentonite for the removal of heavy metals polluted soil.

Tetrazoloquinolines: Synthesis, Reactions, and Applications

2020 ◽  
Vol 24 (4) ◽  
pp. 439-464 ◽  
Author(s):  
Rizk E. Khidre ◽  
Tahah A. Ameen ◽  
Mounir A. I. Salem
Keyword(s):  
Carboxylic Acid ◽  
Chemical Reactions ◽  
Sodium Azide ◽  
Biological Activities ◽  
Quinoline Derivatives ◽  
Pharmacological Activities ◽  
Synthesis Reactions ◽  
Intramolecular Cyclocondensation

This review summarizes the synthesis, reactions, and biological activities of tetrazolo[1,5-a]quinoline derivatives. These derivatives were synthesized by several methods such as i) from the reaction of 2-chloroquinoline with sodium azide ii) from diazotization 2-hydrazinylquinoline derivatives, and iii) from intramolecular cyclocondensation of 2-azidoarylidenes. Also, the chemical reactions and pharmacological activities of some tetrazoloquinolines such as tetrazolo[1,5-a]quinoline-4-carbaldehyde, 5-chlorotetrazolo[ 1,5-a]quinoline, 4-(chloromethyl)tetrazolo[1,5-a]quinoline, tetrazolo[1,5- a]quinoline-4-carboxylic acid, and 5-azidotetrazolo[1,5-a]quinoline were discussed.

Migration of Heavy Metals from Polluted Soil to Plants and Lichens under Conditions of Field Experiment on the Kola Peninsula

2020 ◽  
Vol 51 (6) ◽  
pp. 528-540
Author(s):  
I. V. Lyanguzova ◽  
M. S. Bondarenko ◽  
A. I. Belyaeva ◽  
M. N. Kataeva ◽  
V. Sh. Barkan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Field Experiment ◽  
Kola Peninsula ◽  
Polluted Soil
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