Toxicological evaluation for bioremediation processes of TNT-contaminated soil by Salmonella mutagenicity assay

Several nitrogen fixing consortia (NFC) were isolated from kerosene contaminated soil, where Phaseolus vulgaris plants were being cultivated. The capability of these consortia for kerosene hydrocarbons removal was investigated and demonstrated. The NFC cultivated under aerobic conditions, and kerosene as sole carbon source, effected a maximum of 75% of reduction of the total kerosene hydrocarbons. Also, from experiments conducted to evaluate their atmospheric nitrogen fixing capability, all consortia showed nitrogenase activity: from 4 to 183 nmol N2/3E09 bacteria.day. To our knowledge, this is the first report that shows a group of bacteria with the dual characteristic of fixing atmospheric nitrogen and capability to use kerosene hydrocarbons as a sole carbon source. Application of these microorganisms to soil bioremediation processes is discussed.

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Metal-contaminated soil remediation by using sludges of the marble industry: Toxicological evaluation

Environment International ◽

10.1016/j.envint.2006.11.003 ◽

2007 ◽

Vol 33 (4) ◽

pp. 502-504 ◽

Cited By ~ 21

Author(s):

C. Pérez-Sirvent ◽

M.L. García-Lorenzo ◽

M.J. Martínez-Sánchez ◽

M.C. Navarro ◽

J. Marimón ◽

...

Keyword(s):

Soil Remediation ◽

Contaminated Soil ◽

Toxicological Evaluation ◽

Marble Industry

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Integrating Electrokinetic and Bioremediation Process for Treating Oil Contaminated Low Permeability Soil

E3S Web of Conferences ◽

10.1051/e3sconf/20183103005 ◽

2018 ◽

Vol 31 ◽

pp. 03005

Author(s):

Bimastyaji Surya Ramadan ◽

Agus Jatnika Effendi ◽

Qomarudin Helmy

Keyword(s):

Environmental Regulation ◽

Contaminated Soil ◽

Recovery Process ◽

Oil Contamination ◽

Low Permeability ◽

Mining Activities ◽

Hydrocarbon Removal ◽

Hydrocarbon Molecules ◽

Electrokinetic Process ◽

Bioremediation Processes

Traditional oil mining activities always ignores environmental regulation which may cause contamination in soil and environment. Crude oil contamination in low-permeability soil complicates recovery process because it requires substantial energy for excavating and crushing the soil. Electrokinetic technology can be used as an alternative technology to treat contaminated soil and improve bioremediation process (biostimulation) through transfer of ions and nutrient that support microorganism growth. This study was conducted using a combination of electrokinetic and bioremediation processes. Result shows that the application of electrokinetic and bioremediation in low permeability soils can provide hydrocarbon removal efficiency up to 46,3% in 7 days operation. The highest amount of microorganism can be found in 3-days operation, which is 2x108 CFU/ml using surfactant as flushing fluid for solubilizing hydrocarbon molecules. Enhancing bioremediation using electrokinetic process is very potential to recover oil contaminated low permeability soil in the future.

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Properties of an aged phenanthrene-contaminated soil and its response to bioremediation processes

Journal of Soils and Sediments ◽

10.1007/s11368-009-0133-6 ◽

2009 ◽

Vol 10 (3) ◽

pp. 545-555 ◽

Cited By ~ 7

Author(s):

Rosalia Scelza ◽

Maria A. Rao ◽

Liliana Gianfreda

Keyword(s):

Contaminated Soil ◽

Bioremediation Processes

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Structure Analysis and Diversity of Bacterial Community and their Resistance Determinants in a Nickel-Contaminated Soil in Southwest Slovakia

Acta Environmentalica Universitatis Comenianae ◽

10.1515/aeuc-2016-0003 ◽

2016 ◽

Vol 24 (1) ◽

pp. 17-24

Author(s):

Matej Remenár ◽

Edita Karelová ◽

Jana Harichová ◽

Anna Kamlárová ◽

Kristína Krčová ◽

...

Keyword(s):

Heavy Metal ◽

Bacterial Community ◽

Contaminated Soil ◽

Heavy Metal Resistance ◽

Metal Resistance ◽

Bacterial Phyla ◽

Resistance Determinants ◽

Final Output ◽

Heavy Metal Resistant ◽

Bioremediation Processes

AbstractIn this study we aimed to analyse the structure and diversity of overall bacterial community and its resistance determinants from nickel-contaminated soil in Slovakia by both, cultivation-dependent and independent approaches. The phylogeny was reconstructed using partial sequences of 16S rRNA (16S rDNA) and heavy-metal resistance genes from separated isolates and bacterial clones. A total of 518 bacterial sequences obtained from both, isolates and clones, represented 266 species belonging to 8 bacterial phyla: Acidobacteria, Actinobacteria, Bacteroidetes, Cyanobacteria, Firmicutes, Gemmatimonadetes, Proteobacteria (α-, β- and γ-classes), Verrucomicrobia, and one yet unclassified group. In addition, among isolates and clones, 49 different nccA-like genes were found in the final output. Majority of them were assigned to a system of transmembrane metal pumps. Our results demonstrate the fact that the nickel-contaminated soil is able to present very specific heavy-metal resistant bacterial community which can be used in different bioremediation processes.

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