Photobiological transformation of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) using Rhodobacter sphaeroides

Millerick, Kayleigh; Johnston, Juliet T.; Finneran, Kevin T.

doi:10.1016/j.chemosphere.2016.05.056

Cited by 8 publications

(3 citation statements)

References 36 publications

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“…These bacteria have been isolated from diverse environments, including marine water [6], river [3], wastewater treatment [7], and domestic wastewater treatment [8]. This group of AAP is also known as potential pollutans bioremediations such as heavy metal [9,10], azo dye [7], and miscellaneous pollutants [11,12,13]. Yogyakarta is one of Provinces in Indonesia which is geographically located in the middle of the plains region flanked by neighboring districts with high character of Mount Merapi slope in the north and coastal areas in the south.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic identification and numerical taxonomy of pigmented bacteria isolated from marine and freshwater aquatic at Yogyakarta, Indonesia

Susanti

Retnaningrum

2018

Digital Press Physical Sciences and Engineering

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Numerical phenetic analysis was used to compare phenotypic data obtained from 6 isolates of pigmented bacteria strains taken from marine and river aquatic. Each strain was tested for 120 characters, analysed using the simple matching (SSM) and Jaccard (SJ) similarity indices with unweighted pair-group method with arithmetic mean (UPGMA) clustering method. All of the strains classified into two clusters, cluster A as marine pigmented bacteria and cluster B as river pigmented bacteria. Differences were observed between the dendrograms derived from the SSM and SJ. Presence of bacteriochlorophyll-a (Bchl-a), carotenoids, as well as other biochemical tests of three marine pigmented strains were in match with key characters of the genera Roseobacter, Roseateles and Erythrobacter. Three of river pigmented strains were identified as Xanthobacter, Flavobacterium and Pseudomonas. It was proved that the marine and river pigmented bacteria isolates showed a relative phenotypically distance. It was clearly seen that the phenetic approach was a necessary tool to delimitate and identify the pigmented bacteria from different habitats.

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Section: Introductionmentioning

confidence: 99%

Phenotypic identification and numerical taxonomy of pigmented bacteria isolated from marine and freshwater aquatic at Yogyakarta, Indonesia

Susanti

Retnaningrum

2018

Digital Press Physical Sciences and Engineering

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“…In addition, the transformation of 2,4,6‐trinitrotoluene mediated by bacterial, marine macroalgae, and photolysis has been examined . Meanwhile, microbiological transformation and mineralization of RDX have only been investigated in the presence of bacteria and fungi . Most recently, bacterial ( Rhodobacter sphaeroides ) photosynthesis using light as the energy source to facilitate RDX transformation showed great potential as a strategy for ex situ RDX treatment .…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, microbiological transformation and mineralization of RDX have only been investigated in the presence of bacteria and fungi . Most recently, bacterial ( Rhodobacter sphaeroides ) photosynthesis using light as the energy source to facilitate RDX transformation showed great potential as a strategy for ex situ RDX treatment . However, no studies have investigated RDX transformation by photosynthetic microalgae.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic microalgae‐mediated transformation of hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine under initially anaerobic conditions

Hwang

Yun

Lee

et al. 2017

Env Prog and Sustain Energy

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We examined the potential of photosynthetic microalgae to perform anaerobic transformation of an energetic explosive compound, hexahydro‐1,3,5‐trinito‐1,3,5‐triazine (RDX). All species tested, including Microcystis sp., Pediastrum biwae, Nostoc commune, and Scenedesmus obliquus, exhibited the potential for RDX transformation under light and initially anaerobic conditions; 40 µM (∼ 8.9 mg L−1) of RDX decreased to 0∼7 µM within 7 d. The formation and subsequent removal of nitrite and ammonium occurred after RDX transformation in the presence of S. obliquus under light and anaerobic conditions. Significantly more RDX was transformed when incubated with S. obliquus than without microalgae, likely because the cells used RDX and its metabolites as carbon and nitrogen sources. In the absence of microalgae, RDX concentrations decreased by <5%, 40%, and 75% at light intensities of 0, 25, and 50 µmol s−1 m−2, respectively, within 15 d, and nitrite as a byproduct of RDX transformation was detected only under light conditions. This suggested that RDX transformation occurred not only by enzymatic transformation but also through an initial denitration pathway via photodegradation. This study demonstrates that photosynthetic microalgae can transform RDX and its intermediates effectively under light and anaerobic conditions, and suggests that photosynthetic microalgae are a viable option for treating RDX‐contaminated wastewater. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1677–1683, 2018

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Increasing electron donor concentration does not accelerate complete microbial reductive dechlorination in contaminated sediment with native organic carbon

Haluska

Finneran

2021

Biodegradation

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Photobiological transformation of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) using Rhodobacter sphaeroides

Cited by 8 publications

References 36 publications

Phenotypic identification and numerical taxonomy of pigmented bacteria isolated from marine and freshwater aquatic at Yogyakarta, Indonesia

Phenotypic identification and numerical taxonomy of pigmented bacteria isolated from marine and freshwater aquatic at Yogyakarta, Indonesia

Photosynthetic microalgae‐mediated transformation of hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine under initially anaerobic conditions

Increasing electron donor concentration does not accelerate complete microbial reductive dechlorination in contaminated sediment with native organic carbon

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