Synthetic azo dye bio-decolorization by Priestia sp. RA1: process optimization and phytotoxicity assessment

Vinayak, A.; Singh, Gajendra B.

doi:10.1007/s00203-022-02931-9

Cited by 7 publications

(6 citation statements)

References 44 publications

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“…This could be attributed to the natural toxicity of higher dye concentrations, which can inhibit microbial activity in most organisms [ 96 , 100 ]. Our results are in harmony with previous studies that showed a decreased decolorization rate with increasing dye concentration [ 39 , 72 , 75 ]. Also, previous studies have demonstrated the decolorization capabilities of certain microorganisms isolated from dying wastewater with a specific dye concentration.…”

Section: Discussionsupporting

confidence: 93%

“…Different abiotic factors, including temperature, pH, incubation time, nutrient availability, and initial dye concentration, can affect the decolorization rate [ 39 ]. In this study, we assessed the impact of all these abiotic factors on the dye decolorization ability of S. albidoflavus 3MGH.…”

Section: Discussionmentioning

confidence: 99%

“…Addressing this pressing issue involves employing three main categories of technologies aimed at removing azo dyes from the environment: chemical, physical, and biological methods [ 10 , 30 – 37 ]. However, the chemical and physical treatment approaches possess inherent limitations, including low efficiency, substantial sludge generation, high energy requirements, and significant costs [ 9 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

“…Laccases, as multi-copper oxidases, are widely utilized for oxidizing dye by-products, either directly or through mediators such as 2, 2’-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), facilitating the decolorization of textile dyes [ 43 – 45 ]. Microorganisms capable of decolorizing dyes have been discovered and examined in various environments, such as dye-polluted soil, water, sludge, and industrial wastewater [ 7 , 39 , 42 ]. Recent studies have extensively explored the use of microorganisms and higher plants in wastewater treatment to effectively remove azo dyes.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the decolorization efficiency and biodegradation mechanisms of different functional textile azo dyes by Streptomyces albidoflavus 3MGH

El Awady,

El-Shall,

Mohamed

et al. 2024

BMC Microbiol

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Efficiently mitigating and managing environmental pollution caused by the improper disposal of dyes and effluents from the textile industry is of great importance. This study evaluated the effectiveness of Streptomyces albidoflavus 3MGH in decolorizing and degrading three different azo dyes, namely Reactive Orange 122 (RO 122), Direct Blue 15 (DB 15), and Direct Black 38 (DB 38). Various analytical techniques, such as Fourier Transform Infrared (FTIR) spectroscopy, High-Performance Liquid Chromatography (HPLC), and Gas Chromatography-Mass Spectrometry (GC-MS) were used to analyze the degraded byproducts of the dyes. S. albidoflavus 3MGH demonstrated a strong capability to decolorize RO 122, DB 15, and DB 38, achieving up to 60.74%, 61.38%, and 53.43% decolorization within 5 days at a concentration of 0.3 g/L, respectively. The optimal conditions for the maximum decolorization of these azo dyes were found to be a temperature of 35 °C, a pH of 6, sucrose as a carbon source, and beef extract as a nitrogen source. Additionally, after optimization of the decolorization process, treatment with S. albidoflavus 3MGH resulted in significant reductions of 94.4%, 86.3%, and 68.2% in the total organic carbon of RO 122, DB 15, and DB 38, respectively. After the treatment process, we found the specific activity of the laccase enzyme, one of the mediating enzymes of the degradation mechanism, to be 5.96 U/mg. FT-IR spectroscopy analysis of the degraded metabolites showed specific changes and shifts in peaks compared to the control samples. GC-MS analysis revealed the presence of metabolites such as benzene, biphenyl, and naphthalene derivatives. Overall, this study demonstrated the potential of S. albidoflavus 3MGH for the effective decolorization and degradation of different azo dyes. The findings were validated through various analytical techniques, shedding light on the biodegradation mechanism employed by this strain.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Exploring the decolorization efficiency and biodegradation mechanisms of different functional textile azo dyes by Streptomyces albidoflavus 3MGH

El Awady,

El-Shall,

Mohamed

et al. 2024

BMC Microbiol

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“…UV-Vis analysis was carried out in dye decolourization conformation in which 5ml of incubated decolourized media, control media and blank media were taken in centrifuge tubes and centrifuged for 10min at 10000 rpm, 4⸰C. After the cell biomass was eliminated, the supernatant's absorbance in the centrifuged medium was measured at 524 nm [28].…”

Section: Uv-vis Spectroscopic Studymentioning

confidence: 99%

Biodecolorization of Reactive Red 120 Azo Dye by Metal-Ion Tolerant Lysinibacilluscapsici PB300 (T) Bacteria Bacteria and its Application Potential in Textile Effluents Treatment

Lata,

Singh,

Ambade

et al. 2024

Preprint

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Currently, the textile industry is among the most rapidly expanding areas of the economy and is an important source of water pollution. There are many efficient chemical and physical methods for treating textile effluent, but they produce secondary pollutants. Therefore, there is a need to manage the textile waste wastewater. The potential EPS-producing and plant growth-promoting rhizobacteria Lysinibacillus capsici PB300 (T) bacteria strain has been isolated from the bark borer-affected Peltophorum pterocarpum plant and has been determined to be effective in > 95 decolorizing Reactive Red 120, and other azo dyes such as AB11385%, orange II 94.62%, Congo red 94.62%, phenol red 94.54%, and mixtures of azo dyes 81.66%. Physico-chemical factors were optimized manually, including Taguchi design. EPS production, PGPR strain, and fabric discoloration of L. capsici were qualitatively studied. The FTIR, GC-MS, and UV absorbance studies also confirmed that the dye had been broken into its amines. Research findings using enzyme assays have shown that the bacteria Lysinibacillus capsici PB300 (T) can utilize laccase and manganese peroxidase and are capable of degrading dyes significantly. According to this work, immobilised L. capsici cells and the studied four bacterial consortiums, Lysinibacillus capsici PB300 (T), Alcaligenes faecalis subsp. Phenolicus DSM 16503 (T), Acinetobacterbaumanni ATCC 19606 (T), and Pseudomonasaeruginosa JCM 5962 may be employed to degrade RR120 effectively, and it is concluded that L. capsici PB300 (T) bacteria is significantly efficient in textile effluent treatment.

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Membrane-Based Technologies for Industrial Wastewater Treatment

Vinayak¹,

Rathi²,

Kushan³

et al. 2023

Materials Horizons: From Nature to Nanomaterials

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Synthetic azo dye bio-decolorization by Priestia sp. RA1: process optimization and phytotoxicity assessment

Cited by 7 publications

References 44 publications

Exploring the decolorization efficiency and biodegradation mechanisms of different functional textile azo dyes by Streptomyces albidoflavus 3MGH

Exploring the decolorization efficiency and biodegradation mechanisms of different functional textile azo dyes by Streptomyces albidoflavus 3MGH

Biodecolorization of Reactive Red 120 Azo Dye by Metal-Ion Tolerant Lysinibacilluscapsici PB300 (T) Bacteria Bacteria and its Application Potential in Textile Effluents Treatment

Membrane-Based Technologies for Industrial Wastewater Treatment

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