Bacterial degradation and decolorization of textile dyes by newly isolated Lysobacter sp.

Ranga, Poonam; Saharan, Baljeet Singh; Sharma, Deepansh; Ankita, .

doi:10.5897/ajmr2014.7046

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…Most of the dyes are generally decolorized by microbial cultures in a neutral to slightly alkaline pH range (Ranga et al 2015). Our results revealed that the strains can degrade MR dye in the alkaline pH, which is in accordance with most studies (Moutaouakkil et al 2003;Ranga et al 2015). Initial dye concentration was significant in the degradation activity of our strains.…”

Section: Analytical Studiessupporting

confidence: 91%

“…pH greatly impacts on the dye decolorization efficiency, which may be related to the transport of dye molecules through the cell membrane (Kodam et al 2005). Most of the dyes are generally decolorized by microbial cultures in a neutral to slightly alkaline pH range (Ranga et al 2015). Our results revealed that the strains can degrade MR dye in the alkaline pH, which is in accordance with most studies (Moutaouakkil et al 2003;Ranga et al 2015).…”

Section: Analytical Studiessupporting

confidence: 88%

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Methyl red biodegradation based on Taguchi method by two novel bacteria

Marvi-Mashhadi

Sharifmoghadam

Goharimanesh

et al. 2021

Int. J. Environ. Sci. Technol.

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In this paper, the microbial degradation of methyl red (MR) was investigated by novel isolated bacteria S1 and K1 from wastewater effluent. Based on morphological, biochemical and molecular methods, strain S1 belonged to the Staphylococcus schleiferi subsp. coagulans GA 211 with 92.67% similarity (accession number MT573965) and strain K1 belonged to the Klebsiella michiganensis W14 with 99.85% similarity (accession number MT572941). To the best of our knowledge, this is the first report of dye degradation activity of these bacteria. The Taguchi Statistical Method (TSM) was used to optimize the experimental conditions. Taguchi's L 18 orthogonal array (OA) was performed, and the results were used to calculate signal-to-noise (S/N) ratios. According to S/N ratios, it was discovered that optimum experimental conditions are at pH 8, temperature 40°C, initial dye concentration 50 mg/l, carbon source glucose, rpm 75, inoculum 3% v/v and strain S1. Analyzing the results of the biodegradation assay by Minitab 19 statistical software, it was found that rpm and temperature are most and less effective in the MR biodegradation assay, respectively. Significant changes in the HPLC and UV-Vis spectrum of samples of strain S1 before and after biodegradation assay confirmed the complete biodegradation of MR by S1 strain.

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Section: Analytical Studiessupporting

confidence: 91%

Section: Analytical Studiessupporting

confidence: 88%

Methyl red biodegradation based on Taguchi method by two novel bacteria

Marvi-Mashhadi

Sharifmoghadam

Goharimanesh

et al. 2021

Int. J. Environ. Sci. Technol.

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“…Moreover, the advanced biological processes have received increasing attention due to their low cost, high efficiency, less secondary sludge generation, and eco‐friendly nature . Many researchers have focused on the use of microorganisms in decolorization of different textile dyes . Particularly, bacteria offer the potential to reduce azo dyes under either anaerobic or aerobic conditions.…”

Section: Introductionmentioning

confidence: 99%

“…[2,3] Many researchers have focused on the use of microorganisms in decolorization of different textile dyes. [4,5] Particularly, bacteria offer the potential to reduce azo dyes under either anaerobic or aerobic conditions. These bacteria include Clostridium sp., [6] facultative anaerobes, such as Escherichia sp.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Methyl Orange Removal Using a Newly Isolated Bacterial Strain and Potassium‐Iodide‐Doped Hydroxyapatite Nanoparticles

Kilany

Ibrahim

Alshehri

et al. 2019

CLEAN Soil Air Water

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Due to the toxicity and mutagenicity of methyl orange (MO), it is necessary to eliminate MO from wastewater. A bacterial strain is isolated and identified that possesses a high MO decolorization ability. Furthermore, the cultural requirements and the decolorization behavior of the bacterial isolate are investigated. Potassium‐iodide‐doped hydroxyapatite (KI‐doped HAp) nanoparticles are synthesized and characterized. The enhancement of the decolorization rate using KI‐doped HAp nanoparticles is experimentally confirmed. The microbial toxicity assessment is evaluated against Bacillus subtilis, and the bacterial isolate is identified as the Enterococcus faecalis strain Kilany MO under accession number KY780590. This strain shows maximum decolorization of MO (86.4%) at 400 mg L−1, pH 6, and 30 °C for 48 h under static conditions. In addition, being extremely tolerant of concentrations of MO of up to 1000 mg L−1 or more, E. faecalis exhibited decolorizing activity through biosorption rather than adsorption. Scanning electron microscopy and energy dispersive X‐ray spectra revealed that KI‐doped HAp nanoparticles are nanorods that are 50–100 nm in size with a Ca/P molar ratio of 1.833. KI‐doped HAp nanoparticles enhanced decolorization, yielding a maximum removal of 95% within 48 h. A microbial toxicity study revealed that the bacterial metabolites are less toxic than MO. Hence, the potential of E. faecalis to withstand high concentrations of MO, especially in the presence of nanoparticles, may start a new trend in wastewater bioremediation strategy.

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