Contaminant and plant-derived changes in soil chemical and microbiological indicators during fuel oil rhizoremediation with Galega orientalis

Mikkonen, Anu; Kondo, Elina; Lappi, Kaisa; Wallenius, Kaisa; Lindström, Kristina; Hartikainen, Helinä; Suominen, Leena

doi:10.1016/j.geoderma.2010.10.001

Cited by 25 publications

(32 citation statements)

References 41 publications

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“…The samples were sieved (Ø 5 mm) on the sampling day and stored at 4°C until the MPN plates were prepared the next day. The TPH concentration of the samples was analysed according to the ISO 16703 (2004) standard procedure as described by Mikkonen et al (2010) except that the acetone was removed using the centrifugation method (Jørgensen et al 2005). Soil total microbial biomass carbon (mic c ) was determined by the chloroform-fumigation extraction method (Vance et al 1987) as described by Guicharnaud et al (2010).…”

Section: Soil Samplesmentioning

confidence: 99%

“…This approach has been shown to be especially useful in the monitoring of bioremediation treatments (e.g. Kirk et al 2005;Piskonen et al 2005;Powell et al 2006;Mikkonen et al 2010). The degraders of aromatic hydrocarbons are of special interest because aromatics comprise a highly toxic and widespread group of hydrocarbon contaminants with bioaccumulative properties.…”

Section: Introductionmentioning

confidence: 99%

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Simplified MPN method for enumeration of soil naphthalene degraders using gaseous substrate

et al. 2011

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We describe a simplified microplate most-probable-number (MPN) procedure to quantify the bacterial naphthalene degrader population in soil samples. In this method, the sole substrate naphthalene is dosed passively via gaseous phase to liquid medium and the detection of growth is based on the automated measurement of turbidity using an absorbance reader. The performance of the new method was evaluated by comparison with a recently introduced method in which the substrate is dissolved in inert silicone oil and added individually to each well, and the results are scored visually using a respiration indicator dye. Oil-contaminated industrial soil showed slightly but significantly higher MPN estimate with our method than with the reference method. This suggests that gaseous naphthalene was dissolved in an adequate concentration to support the growth of naphthalene degraders without being too toxic. The dosing of substrate via gaseous phase notably reduced the work load and risk of contamination. The result scoring by absorbance measurement was objective and more reliable than measurement with indicator dye, and it also enabled further analysis of cultures. Several bacterial genera were identified by cloning and sequencing of 16S rRNA genes from the MPN wells incubated in the presence of gaseous naphthalene. In addition, the applicability of the simplified MPN method was demonstrated by a significant positive correlation between the level of oil contamination and the number of naphthalene degraders detected in soil.

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Section: Soil Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simplified MPN method for enumeration of soil naphthalene degraders using gaseous substrate

et al. 2011

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“…According to present conduct studies cracking and leakage in pipelines is one of the most important reasons of releasing such gases into the atmosphere [1]. More over, oil and fuel contamination influence soil composition and as a result agricultural productivity decrease and biological ecosystem inside the soil can not be normally maintained [2]. Such environmental contamination may also influence on plants including: decreasing in respiration and transpiration rates and also inhibition in translocation [3].…”

Section: Introductionmentioning

confidence: 96%

Сrack Branching in Catastrophic Fractures of Metal Structures and Environmental Damages

2015

IJEE

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In this article, fracturing in large-scale metal structures such as main gas pipelines, fuel and oil tanks operated in Arctic were investigated. It is shown that catastrophic accidents involved in large thinwalled metal structures in large diameter pipelines, tanks and pressure vessels. The fractures occurred not only due to stretch propagation of brittle or viscous fractures, but also followed branching that leads to fragmented fractures with simultaneous movement of many cracks. The character of the fracture depends on the level of the fracture strength. At high levels cracks propagated at a high speed by a mechanism of separation; as a result of crack branching fragment damage occurred. At low level, cracks propagate at a low speed by a cutting mechanism; that does not cause extensive fracturing. The cracks may cause structural and environmental damages.

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“…is a plant of the family Fabaceae Lindl., subfamily Fabaoideae, tribe Galegae and subtribe Galeginae. It is only recently that scientists worldwide [Šlepetys, 2003;Baležentienė, 2009Baležentienė, , 2011Egamberdieva et al, 2010;Mikkonen et al, 2011] and in Poland [Deska, 2009;Deska et al, 2012, Kozłowski andZielewicz, 2013] have started to be interested in the plant. Indigenous to the northern Caucasus, the plant can be found in the wild in forested regions of Georgia, southern Armenia, south-western Azerbaijan and sometimes in the Crimea.…”

Section: Introductionmentioning

confidence: 99%

Application of a Logistic Function to Describe the Growth of Fodder Galega

Rymuza

2017

J. Ecol. Eng.

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It was attempted in the paper to describe the growth of oriental goat's rue (Galega orientalis Lam.) growth by means of a logistic function. The studies demonstrated that the function describes empirical data well as the coefficients of determination obtained ranged between 97 to 98%, depending on the growing season. The estimated function parameters indicate that both the plant height and growth rate were conditioned by thermal conditions and moisture during the growing season. Plants had the longest stems in the year 2010 (127.9 cm), and the shortest in 2008 (105.9 cm). The maximum growth rate ranged from 2.12 to 3.97 cm per day in, respectively, 2009 and 2008. Also the inflection point, the point at which plants grew the fastest, depended on the conditions of the growing season.

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Contaminant and plant-derived changes in soil chemical and microbiological indicators during fuel oil rhizoremediation with Galega orientalis

Cited by 25 publications

References 41 publications

Simplified MPN method for enumeration of soil naphthalene degraders using gaseous substrate

Simplified MPN method for enumeration of soil naphthalene degraders using gaseous substrate

Сrack Branching in Catastrophic Fractures of Metal Structures and Environmental Damages

Application of a Logistic Function to Describe the Growth of Fodder Galega

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