Phenanthrene Contaminated Soil Biotreatment Using Slurry Phase Bioreactor

Arbabi, Mohsen; Sadeghi, Majid.; Anyakora, Chimezie

doi:10.3844/ajessp.2009.223.229

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…Immobilization inside packed bed bioreactor had been reported with rice straw (Tao et al, 2010) as well as waste paper. Bioreactors has been well reported for removal of pollutants (Arbabi et al, 2009). Here the immobilization was tried out on corrugated sheets.…”

Section: Characterization Of the Consortiamentioning

confidence: 99%

Microbial Consortia from Taptapani Hot Water Springs for Mining Effluent Treatment

Nasipuri¹

2010

American Journal of Microbiology

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Problem statement: Soluble sulfate load in effluent is a crucial problem from mining industries. The study involved isolation of efficient Sulfate Reducing Bacterial (SRB) consortium from hot water spring for bioremediatrion of sulfate contaminated waste water. Approach: The enriched bacterial consortium was isolated in medium DSMZ 16695. The sulfate reduction efficiency was measured by turbidometric method. The K m and R max value of the consortium was determined. It was immobilized in 10L bioreactor and the sulfate reduction was measured in presence of media and mine effluent. Results: The consortium was found to reduce 2000ppm of sulfate in 36h under optimum condition. The K m of 1.1530 ppm and R max value of 0.030h −1 was obtained under optimum conditions of pH-7.5 at 40°C with 2% inoculum. Consortium immobilized under ambient condition in a 10L packed bed reactor yielded about 21-41% reduction of soluble sulfate in synthetic medium prepared using effluent water and tap water respectively. Conclusion: This study reports for the first time the use of efficient SRB consortia from hot water spring for bioremediation of mine effluent.

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Section: Characterization Of the Consortiamentioning

confidence: 99%

Microbial Consortia from Taptapani Hot Water Springs for Mining Effluent Treatment

Nasipuri¹

2010

American Journal of Microbiology

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“…PAHs are a group of chemicals that are derived from organic compounds and they are environmental contaminants, found in air, water, and soil [7]. PAHs could be released during natural processes (burning coal and wood or during forest fires) or anthropogenic sources and incomplete combustion of organic materials such as incomplete burning of coal, oil and gas, garbage, urban sewage, vehicle exhausts, power plants chemical, cooked foods, aluminium smelters, petrochemical and oil industries as well as asphalt works, and hazardous waste sites [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effects of Phenanthrene and Pyrene on Cytogenetic Stability of Human Dermal Fibroblasts Using Alkaline Comet Assay Technique

Mahvi

Mardani

Ghasemi-Dehkordi

et al. 2015

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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In the present study, the influence of phenanthrene and pyrene on cytogenetic stability of human dermal fibroblasts using alkaline comet assay was evaluated. The cells were isolated from foreskin samples obtained from healthy male infants and in low passages (P 1-3) were exposed to various concentrations (0.0900, 0.0625, 0.0320, and 0.0066 ppm) of phenanthrene and pyrene. Then, alkaline comet assay was performed to investigate the influence of these compounds on DNA damage and cytogenetic stability of human dermal fibroblasts. In the present work H 2 O 2 treatment was used as a positive control of comet assay to create DNA damages. The analysis of alkaline comet assay parameters by CaspLab software showed the tail DNA% in high concentration (0.0900 ppm) of phenanthrene and pyrene in the exposed cells got increased as compared to normal cells, while head DNA% decreased. Also, similar to positive control (H 2 O 2 ), DNA damage with long tail comet was observed in high concentration of these compounds as compared to normal cells. The comparison of comet assay parameters specially head DNA% and tail DNA% between each concentrations of phenanthrene and pyrene with other groups (healthy cells and H 2 O 2 treatment) by ANOVA and post hoc Tukey test showed that these parameters were more significantly different (p \ 0.05). These results indicated that phenanthrene and pyrene even in low dosage are dangerous and can increase the DNA damage and affect on cytogenetic stability of dermal fibroblasts. These findings suggested that phenanthrene and pyrene could increase the related diseases and risk of skin cancer in exposed individuals.

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“…Repeated measurements across time (occasion, drug or treatment) on the same subject (e.g., patient, animal, cell culture, block) are frequently observed in several scientific fields, for example in medicine, pharmaceutical, agriculture, industrial and social sciences (Zangiabadi and Ahrari, 2005;Sharifi et al, 2008;Arbabi et al, 2009;Tu and Koh, 2010;Mosallanejad et al, 2011). This type of data commonly called univariate repeated measures data (Davis, 2002).…”

Section: Introductionmentioning

confidence: 99%

A Test for Two-Sample Repeated Measures Designs: Effect of High-Dimensional Data

Choopradit¹,

Chongcharoen²

2011

Journal of Mathematics and Statistics

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Problem statement: High-dimensional repeated measures data are increasingly encountered in various areas of modern science since classical multivariate statistics, e.g,. Hotellings T², are not well defined in the case of high-dimensional data. Approach: In this study, the test statistics with no specific form of covariance matrix for analyzing high-dimensional two-sample repeated measures designs with common equal covariance are proposed. The asymptotic distributions of the proposed test statistics also were derived. Results: A simulation study exposes the approximated Type I errors in the null case very well even though the number of subjects of each sample as small as 10. Numerical simulations study indicates that the proposed test have good power. Application of the new tests is demonstrated using data from the body-weight of male Wistar rats example. Conclusion: The proposed test statistics have an asymptotically distributed as standard normal distributions, under the null hypothesis. Simulation studies show that these test statistics still accurately control Type I error and have quite good power for any the covariance matrix pattern considered

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Phenanthrene Contaminated Soil Biotreatment Using Slurry Phase Bioreactor

Abstract: Problem

Cited by 7 publications

References 19 publications

Microbial Consortia from Taptapani Hot Water Springs for Mining Effluent Treatment

Microbial Consortia from Taptapani Hot Water Springs for Mining Effluent Treatment

Effects of Phenanthrene and Pyrene on Cytogenetic Stability of Human Dermal Fibroblasts Using Alkaline Comet Assay Technique

A Test for Two-Sample Repeated Measures Designs: Effect of High-Dimensional Data

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