Effect of the D. desulfuricans bacterium and UV radiation on nitrocellulose oxidation

Khryachkov, V.; Саратовских, Е. А.; Yarullin, R. N.; Куликов, А. В.

doi:10.1134/s1990793117040169

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…Before conducting experiments on biological degradation, a portion of the native NC was subjected to the UV ? ozone treatment for 27 h [24].…”

Section: Degree Of Biological Degradation Of the Ncmentioning

confidence: 99%

“…In turn, the increase in the initial rate leads to the shortening of the time of achievement of the maximum rate in the NC proc decomposition reaction [27]. As a result of the separation of nitro groups [19,24], there is a decrease in the total heat of thermal decomposition of the NC proc .…”

Section: Treatment By Ultraviolet Light and Ozonementioning

confidence: 99%

“…An attempt to use this type of physical treatment was made in [37]. However, there is a basic distinction between our work and [24]. We treated the NC with UV radiation, while the authors [24] first treated the wastewater containing NC with alkali (alkaline hydrolysis occurred) and only them subjected the alkali-treated NC with UV radiation.…”

Section: Incubation With D Desulfuricans Bacteria Fungi F Solani and Mixed Culturesmentioning

confidence: 99%

“…The microbiological NC degradation with the sulfatereducing bacteria Desulfovibrio desulfuricans [19] and filamentous fungus Fusarium solani [24,25] has been studied, and the influence of the preliminary NC treatment on the process when UV-irradiation and ozone are used has been considered.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of denitration of nitrocellulose by microbiological treatment for industrial waste effluents using calorimetry analysis

Саратовских

Авдеева

Yarullin

et al. 2018

J Therm Anal Calorim

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The problem of utilization of the compounds present in the effluents of the production of cellulose nitrates (NC) is very important and complicated, and its decision is inextricably related to the environment. The process of heat release in the samples of nitrocellulose subjected to biological processing of different types was studied. Biological processing was conducted by incubation with sulfate-reducing bacteria Desulfovibrio desulfuricans BRMB-1388, microscopic fungi Fusarium solani BKM F-819, and their mixed culture. The studies were carried out on the native NC (13.38% nitrogen) and the NC processed (NC proc ) using ultraviolet radiation and ozone (UV ? ozone). It has been shown that the pretreatment of the NC by UV ? ozone significantly increases the degree of decomposition of the NC during its subsequent biodegradation assisted by symbiotic microorganisms of D. desulfuricans and F. solani. A substantial result was achieved on the fifth day of NC proc incubation, which is promising from the viewpoint of practical applications.

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“…Before conducting experiments on biological degradation, a portion of the native NC was subjected to the UV ? ozone treatment for 27 h [24].…”

Section: Degree Of Biological Degradation Of the Ncmentioning

confidence: 99%

Section: Treatment By Ultraviolet Light and Ozonementioning

confidence: 99%

Section: Incubation With D Desulfuricans Bacteria Fungi F Solani and Mixed Culturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of denitration of nitrocellulose by microbiological treatment for industrial waste effluents using calorimetry analysis

Саратовских

Авдеева

Yarullin

et al. 2018

J Therm Anal Calorim

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Chaetomium elatum treatment of nitrocellulose: investigation on structural and thermal properties

Huang,

Zhang,

Xue

et al. 2023

Cellulose

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Biological method is a sustainable method for various waste polymers treatment due to green, low-cost, mild condition and simple operation. In this study, a novel biological method to process nitrocellulose (NC) to obtain NC with low nitrogen via nitrate ester removal using fungal Chaetomium elatum was proposed. With the extension of time (6 d), the N% of NC declined continuously from 13.06% to 11.71%.Structure properties were investigated by Fourier-transform infrared spectroscopy (FTIR), and Laser Raman co-focal microspectrometry (Raman), which showed the intensity of energetical groups (O-NO 2 , -NO 2 ) decreased. Most importantly, the thermal decomposition properties were performed using Thermogravimetric analysis (TG) and Differential scanning calorimetry (DSC) analysis, where the kinetic parameters of thermal decomposition reaction with DSC were calculated by three traditional methods: Friedman-Reich-Levi, Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose. It indicated that the weight-loss ratio of bio-treated NC decreased from 86.33% to 66.20% and the activation energy (E a ) increased rst and then reduced as the increase of denitri cation time, which demonstrating thermostability of biotreated NC was enhanced. Hence, this structure exploration and thermodynamic analysis provide new method for further investigation of the mechanism of the biological denitri cation process and the assessment safety of bio-treated NC.

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Microorganisms for the oxidation of nitrated cellulose in its effluents (review)

Ryzhmanova,

Avdeeva,

Saratovskikh

et al. 2023

Biophys Rev

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Effect of the D. desulfuricans bacterium and UV radiation on nitrocellulose oxidation

Cited by 7 publications

References 8 publications

Evaluation of denitration of nitrocellulose by microbiological treatment for industrial waste effluents using calorimetry analysis

Evaluation of denitration of nitrocellulose by microbiological treatment for industrial waste effluents using calorimetry analysis

Chaetomium elatum treatment of nitrocellulose: investigation on structural and thermal properties

Microorganisms for the oxidation of nitrated cellulose in its effluents (review)

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