Post-remediation geophysical assessment: Investigating long-term electrical geophysical signatures resulting from bioremediation at a chlorinated solvent contaminated site

The need for skin disinfection before insertion of an acupuncture needle is controversial and there is no specific research on this topic. However research and observations on the effect of, and the need for, skin disinfection before injections forms a good analogy of acupuncture. Whilst micro-organisms present on the surface of the skin are accessible to disinfection, those located under the surface in ducts, glands and follicles are out of reach and can be inoculated into the sterile tissues below by needle insertion. Fortunately, the bacteria resident on the skin have a low potential to cause infection if host immunity is not severely impaired or compromised by the long-term presence of foreign material, such as a surgical stitch. Disinfection of clean skin before injection is not generally considered necessary and observations of lack of infection following injections without prior skin disinfection support this; however, contamination by micro-organisms not normally resident on skin can pose a higher risk of infection. If skin is visibly soiled, it should be washed and if needle insertion is near an infected or contaminated site, it should be disinfected with alcohol. Practitioner hand hygiene between patients is important, even if gloves are worn. Hands should be washed with soap or detergent and water, or an alcohol handrub can be used if hands are physically clean.

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Long-term impact of biochar on the immobilisation of nickel (II) and zinc (II) and the revegetation of a contaminated site

The Science of The Total Environment ◽

10.1016/j.scitotenv.2015.10.057 ◽

2016 ◽

Vol 542 ◽

pp. 771-776 ◽

Cited By ~ 74

Author(s):

Zhengtao Shen ◽

Amelia Md Som ◽

Fei Wang ◽

Fei Jin ◽

Oliver McMillan ◽

...

Keyword(s):

Contaminated Site ◽

Long Term Impact

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Phenylobacterium Korensee Best Indigenous Petroleum Hydrocarbon Degrading Bacteria Isolated from Contaminated Soil of Bahror, Alwar Region, India

International Journal of Contemporary Research and Review ◽

10.15520/ijcrr.v10i08.729 ◽

2019 ◽

Vol 10 (08) ◽

pp. 20203-20211 ◽

Cited By ~ 2

Author(s):

Mohan Lal Kuri ◽

Vidhya Kumari ◽

Shikha Roy

Keyword(s):

Contaminated Soil ◽

Engine Oil ◽

Contaminated Site ◽

Spectroscopy Analysis ◽

Global Issue ◽

Degrading Bacteria ◽

Term Basis ◽

Agar Media ◽

Gas Chromatography Mass Spectroscopy

Contamination of soil, water and air due to hydrocarbons are a global issue and bioremediation provides probably the best way to remediate the contaminants. The current study shows the biodegradation of crude oil, diesel and used engine oil by a newly isolated Phenylobacterium korensee from contaminated soil of Bahror, Alwar, Rajasthan. Hydrocarbon degrading strain was screened on BHA (Bushnell Haas Agar) media supplemented with 2T engine oil as sole carbon source. The strain was found to be degrading at 1%, 4% and 10% of used 2T engine oil respectively after 14 days. Degradation was confirmed both gravimetrically and by Gas Chromatography Mass Spectroscopy analysis. The degradation was found very well at long term basis. The optimization of growth also studied at temperature and pH basis also. The significance of the study is that the percentage degradation of the complex petroleum supplements used in the study was found to be far higher than some of the previously reported values and this bacterial strain was firstly found from this contaminated site.

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Long-term aerobic cometabolism of a chlorinated solvent mixture by vinyl chloride-, methane- and propane-utilizing biomasses

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2006.05.009 ◽

2006 ◽

Vol 138 (1) ◽

pp. 29-39 ◽

Cited By ~ 29

Author(s):

Dario Frascari ◽

Davide Pinelli ◽

Massimo Nocentini ◽

Arianna Zannoni ◽

Stefano Fedi ◽

...

Keyword(s):

Vinyl Chloride ◽

Solvent Mixture ◽

Chlorinated Solvent ◽

Aerobic Cometabolism

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How the Soil Microbial Communities and Activities Respond to Long-Term Heavy Metal Contamination in Electroplating Contaminated Site

Microorganisms ◽

10.3390/microorganisms9020362 ◽

2021 ◽

Vol 9 (2) ◽

pp. 362 ◽

Cited By ~ 1

Author(s):

Wen-Jing Gong ◽

Zi-Fan Niu ◽

Xing-Run Wang ◽

He-Ping Zhao

Keyword(s):

Heavy Metal ◽

Microbial Communities ◽

Metal Contamination ◽

Heavy Metal Contamination ◽

Soil Microbial Communities ◽

Contaminated Site ◽

Rrna Gene ◽

Soil Microbial ◽

Cu And Zn

The effects of long-term heavy metal contamination on the soil biological processes and soil microbial communities were investigated in a typical electroplating site in Zhangjiakou, China. It was found that the soil of the electroplating plant at Zhangjiakou were heavily polluted by Cr, Cr (VI), Ni, Cu, and Zn, with concentrations ranged from 112.8 to 9727.2, 0 to 1083.3, 15.6 to 58.4, 10.8 to 510.0 and 69.6 to 631.6 mg/kg, respectively. Soil urease and phosphatase activities were significantly inhibited by the heavy metal contamination, while the microbial biomass carbon content and the bacterial community richness were much lower compared to noncontaminated samples, suggesting that the long-term heavy metal contamination had a severe negative effect on soil microorganisms. Differently, soil dehydrogenase was promoted in the presence of Chromate compared to noncontaminated samples. This might be due to the enrichment of Sphingomonadaceae, which have been proven to be able to secrete dehydrogenase. The high-throughput sequencing of the 16S rRNA gene documented that Proteobacteria, Actinobacteria, and Chloroflexi were the dominant bacterial phyla in the contaminated soil. The Spearman correlation analysis showed the Methylobacillus, Muribaculaceae, and Sphingomonadaceae were able to tolerate high concentrations of Cr, Cr (VI), Cu, and Zn, indicating their potential in soil remediation.

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