Biological removal of explosive 2,4,6-trinitrotoluene byStenotrophomonas sp. OK-5 in bench-scale bioreactors

Lee, Myung-Seok; Chang, Hyo-Won; Kahng, Hyung-Yeel; So, Jae-Seong; Oh, Keun-Yeob

doi:10.1007/bf02935888

Cited by 15 publications

(15 citation statements)

References 19 publications

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“…The (specific) rate of aerobic TNT degradation by the MIK consortium grown on starch (2.5 g/L) was greater (P < 0.05) than the rate for most of the previously known aerobic TNTdegrading bacterial isolates belonging to a variety of genus groups (Pseudomonas, Methylobacterium, and Rhizobium) [12,51,52] and was comparable to the rate for the strongest aerobic TNT degraders (Stenotrophomonas sp. OK-5 [33,53] and Pseudomonas putida HK-6 [31]) ( Table 2).…”

Section: Effect Of Starch Addition On Aerobic Biodegradation Of Tntmentioning

confidence: 98%

“…To maintain the diversity and activity of microbial degradation in consortia or mixed cultures, it is practical and cost-effective to use slow-releasing complex carbon sources, such as molasses and starch [17,22,29,30]. In previous TNT degradation studies, the addition of molasses improved the rate of aerobic TNT degradation but not TNT detoxification, exhibiting the accumulation of potentially toxic TNT degradation intermediates [3,23,[31][32][33]. Starch, a plant-produced carbohydrate polymer, is another alternative slow-releasing complex carbon source for stimulating aerobic biodegrading bacteria, particularly for rhizospheric bacteria [34].…”

Section: Introductionmentioning

confidence: 98%

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Improved TNT detoxification by starch addition in a nitrogen-fixing Methylophilus-dominant aerobic microbial consortium

Khan

Lee

Yoo

et al. 2015

Journal of Hazardous Materials

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Section: Effect Of Starch Addition On Aerobic Biodegradation Of Tntmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Improved TNT detoxification by starch addition in a nitrogen-fixing Methylophilus-dominant aerobic microbial consortium

Khan

Lee

Yoo

et al. 2015

Journal of Hazardous Materials

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“…At contaminated soil sites, those hydrophobic compounds also contaminate groundwater. Although those compounds have low solubility in water (ppm and below), they remain very toxic even at extremely low concentration [2,4,8,9,11,13,20,22,23]. Therefore, soil contamination caused by those compounds causes fatal problem to people using the groundwater as a source of drinking water.…”

Section: Introductionmentioning

confidence: 97%

Mobilization and Biodegradation of 2-Methylnaphthalene by Amphiphilic Polyurethane Nano-Particle

Kim

2009

Appl Biochem Biotechnol

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Amphiphilic polyurethane (APU) nano-particle enhanced the mobilization of 2-methylnaphthalene (2-MNPT) in soil. Significant increase in the solubility of 2-MNPT was achieved. The molar solubilization ratio was 0.4 (mole 2-MNPT/mole APU). Simple precipitation of APU particle by 2 N CaCl(2) recovered 95% of APU particle and 92% of 2-MNPT simultaneously. Also, 2-MNPT, which was entrapped inside the APU particle, was directly degraded by Acinetobacter sp. as same efficiency as without APU particle. These results showed the potentials of APU particle in the mobilization and biodegradation of hydrophobic compounds from soil.

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“…The isolation and identification of microorganisms able to utilize TNT has also been explored. These included aerobic bacteria (e.g., Pseudomonas, Bacillus, Citrobacter, and Achromobacter), strict anaerobic bacteria (e.g., Clostridium and Desulfovibrio), and fungi (Phanerochaete) (Duque et al 1993;Michels and Gottschalk 1994;Montpas et al 1997;Oh and Kim 1998;Kalafut et al 1998;Esteve-N uñez, Caballero, and Ramos 2001;Lee et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of trinitrotoluene (TNT) by indigenous microorganisms from TNT-contaminated soil, and their application in TNT bioremediation

Kao

Lin

Chen

et al. 2016

Bioremediation Journal

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Soil and groundwater contaminated by munitions compounds is a crucial issue in environmental protection. Trinitrotoluene (TNT) is highly toxic and carcinogenic; therefore, the control and remediation of TNT contamination is a critical environmental issue. In this study, the authors characterized the indigenous microbial isolates from a TNT-contaminated site and evaluated their activity in TNT biodegradation. The bacteria Achromobacter sp. BC09 and Citrobacter sp. YC4 isolated from TNT-contaminated soil by enrichment culture with TNT as the sole carbon and nitrogen source (strain BC09) and as the sole nitrogen but not carbon source (strain YC4) were studied for their use in TNT bioremediation. The efficacy of degradation of TNT by indigenous microorganisms in contaminated soil without any modification was insufficient in the laboratoryscale pilot experiments. The addition of strains BC09 and YC4 to the contaminated soil did not significantly accelerate the degradation rate. However, the addition of an additional carbon source (e.g., 0.25% sucrose) could significantly increase the bioremediation efficiency (ca. decrease of 200 ppm for 10 days). Overall, the results suggested that biostimulation was more efficient as compared with bioaugmentation. Nevertheless, the combination of biostimulation and bioaugmentation using these indigenous isolates is still a feasible approach for the development of bioremediation of TNT pollution.

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Biological removal of explosive 2,4,6-trinitrotoluene byStenotrophomonas sp. OK-5 in bench-scale bioreactors

Cited by 15 publications

References 19 publications

Improved TNT detoxification by starch addition in a nitrogen-fixing Methylophilus-dominant aerobic microbial consortium

Improved TNT detoxification by starch addition in a nitrogen-fixing Methylophilus-dominant aerobic microbial consortium

Mobilization and Biodegradation of 2-Methylnaphthalene by Amphiphilic Polyurethane Nano-Particle

Biodegradation of trinitrotoluene (TNT) by indigenous microorganisms from TNT-contaminated soil, and their application in TNT bioremediation

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