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Чугунов, В. А.; Ermolenko, Z. M.; Zhigletsova, S. K.; Martovetskaya, I. I.; Mironova, R. I.; Zhirkova, N. A.; Kholodenko, V. P.; Urakov, N. N.

doi:10.1023/a:1026696506947

Cited by 13 publications

(3 citation statements)

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“…The preparations Noggies NG20 by the brand Biodetox, Рага-Вас, (by the brand Miсго-Вас, USA) and many others. 20 As long as all commercially available biopreparations have living bacterial strains, their efficiency depends heavily on the environmental conditions, storage life, and presence of related substances ensuring the nutrition and bacterial growth in soil and water. The studies, undertaken in the Ukrainian scientific centers, 21,22 approve that nanodisperse particles may have stimulating influence on microorganisms, which depends largely on the formation of water layers with partially destroyed hydrogen-bond network at the boundary between cell and particle.…”

Section: Introductionmentioning

confidence: 99%

Research of Lime-Ash Plugging Mixtures

Orlovskyy¹,

Bileckyy²,

Malovanyy³

2022

ChChT

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Lime-ash plugging mixtures (LAPM) with a density of 1450–1780 kg/m3 have been developed and studied as new and competitive plugging compositions. LAPM consisting of lime and acid fly ash were found to be expanded during setting. The composition of the products formed during LAPM hydration was determined by means of X-ray phase analysis. Kinetic curves of plugging material expansion have been obtained at the temperatures of 348–413 K. Rational temperature regimes of LAPM setting according to the criteria of strength and gas permeability of cement stone have been determined.

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Section: Introductionmentioning

confidence: 99%

Research of Lime-Ash Plugging Mixtures

Orlovskyy¹,

Bileckyy²,

Malovanyy³

2022

ChChT

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“…Enhanced degradation of ethylene glycol has been demonstrated by microorganisms in the rhizosphere of shallow-rooted plants such as alfalfa (Rice et al 1997;Castro et al 2001), legumes, and grasses (Shupack and Andersen 2000;Marschner et al 2001). Degradation has been shown to increase after fertilization (Calabrese et al 1993;Chugunov et al 2000) and when sufficient water is added to maintain aerobic conditions (Castro et al 2001). However, phytoremediation using trees with much deeper roots to remediate ethylene glycol at greater depth has not been previously investigated.…”

Section: Introductionmentioning

confidence: 99%

“…One objective of the present study was to evaluate ethylene glycol degradation under nitrate-, and sulphate-reducing conditions by the microorganisms in the rhizosphere of poplar and willow trees from the phytoremediation testplot. Since degradation rates of organic contaminants can be enhanced after fertilization (Calabrese et al 1993;Chugunov et al 2000), the effect of fertilizer addition on ethylene glycol degradation was also studied.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic ethylene glycol degradation by microorganisms in poplar and willow rhizospheres

Carnegie

Ramsay

2009

Biodegradation

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Although aerobic degradation of ethylene glycol is well documented, only anaerobic biodegradation via methanogenesis or fermentation has been clearly shown. Enhanced ethylene glycol degradation has been demonstrated by microorganisms in the rhizosphere of shallow-rooted plants such as alfalfa and grasses where conditions may be aerobic, but has not been demonstrated in the deeper rhizosphere of poplar or willow trees where conditions are more likely to be anaerobic. This study evaluated ethylene glycol degradation under nitrate-, and sulphate-reducing conditions by microorganisms from the rhizosphere of poplar and willow trees planted in the path of a groundwater plume containing up to 1.9 mol l(-1) (120 g l(-1)) ethylene glycol and, the effect of fertilizer addition when nitrate or sulphate was provided as a terminal electron acceptor (TEA). Microorganisms in these rhizosphere soils degraded ethylene glycol using nitrate or sulphate as TEAs at close to the theoretical stoichiometric amounts required for mineralization. Although the added nitrate or sulphate was primarily used as TEA, TEAs naturally present in the soil or CO(2) produced from ethylene glycol degradation were also used, demonstrating multiple TEA usage. Anaerobic degradation produced acetaldehyde, less acetic acid, and more ethanol than under aerobic conditions. Although aerobic degradation rates were faster, close to 100% disappearance was eventually achieved anaerobically. Degradation rates under nitrate-reducing conditions were enhanced upon fertilizer addition to achieve rates similar to aerobic degradation with up to 19.3 mmol (1.20 g) of ethylene glycol degradation l(-1) day(-1) in poplar soils. This is the first study to demonstrate that microorganisms in the rhizosphere of deep rooted trees like willow and poplar can anaerobically degrade ethylene glycol. Since anaerobic biodegradation may significantly contribute to the phytoremediation of ethylene glycol in the deeper subsurface, the need for "pump and treat" or an aerobic treatment would be eliminated, hence reducing the cost of treatment.

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Bioremediation Methods

Speight¹,

Arjoon²

2012

Bioremediation of Petroleum and Petroleum Products

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Cited by 13 publications

References 1 publication

Research of Lime-Ash Plugging Mixtures

Research of Lime-Ash Plugging Mixtures

Anaerobic ethylene glycol degradation by microorganisms in poplar and willow rhizospheres

Bioremediation Methods

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