Textile Industrial Effluent Treatment by Azo Dye  Decolorizing Bacterial Consortium

Kumari, Sunanda; Rajoriya, Preeti

doi:10.20546/ijcmas.2019.811.105

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…Therefore, much research has been conducted to collect the bacterial isolates which decolorize the dyes from different environmental samples [22,23]. When [18], the spread plate method was used to obtain 14 bacterial isolates, results revelaed that the AMS-XIII isolate exhibited maximum decolorization with 96.81% [24]. Results were qualified to isolate twenty-two bacterial isolates from soil samples contaminated with Azo dyes, where isolate SKB16 showed the highest ability to decolorize and degrade two types of Azo dyes reaching up to more than 91% [25].…”

Section: Results and Discussion: Bacterial Isolation And Screening Of...mentioning

confidence: 99%

“…After each period, 5 ml from each flask was withdrawn and centrifuged at 8000 rpm for 10 min to get the supernatant of the free cells. The absorbance of test samples and control were measured at 490 nm using a UV-Visible spectrophotometer and the percentage of decolorization was determined using the same previous equation [17,18].…”

Section: Optimum Conditions To Decolorize Congo Red Dyementioning

confidence: 99%

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Bacterial Biodegradation of Congo Red Dye Using Local Bacterial Isolates

Al-Fayaad¹,

Khudhair²

2022

Iraqi Journal of Science

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The current study aims to get local bacterial isolates isolated from wastewater samples, w the highest ability to decolourize one selected Azo dye (Congo red as a model), and then test its ability to decompose Congo red dye, to obtain the most efficient bacterial isolate Four samples of wastewater collected from sewage transport pipes were used for the bacterial isolation. Forty-two bacterial isolates were obtained after inoculating these samples in the liquid MS medium, pH 7 with 1% glucose, and then on solid MS medium supplemented with50 ppm of Congo red dye. Results from primary tests showed that only eighteen bacterial isolates own varying abilities to decolourize Congo red dye and the isolates WR7, WR18 and WR30 give high clear zones (20 mm). The secondary screening was achieved to determine the most efficient isolates to degrade the Congo red dye. The results indicated that the isolates WR7, WR18, and WR30 appeared to have the highest ability to decolorize Congo red dye reaching 88.6%, 83.9%, and 92.8%, respectively. The results from the optimum conditions experiment revealed that the isolates WR7, WR18 and WR30 appeared to have the highest ability to degrade dye reached 88.7%, 83.9%, and 92.9% respectively when 100 ppm of Congo red dye was used after 3 days of incubation as compared with other studied concentrations. While the second step in this experiment confirmed that the isolate WR30 has the highest percentage to degrade the Congo red dye during all incubation periods, which reached 14.6%, 42.7%, 92.9%, 92.4% and 91.8% after 1, 2, 3, 4, and 5 days of incubation when 100 ppm of Congo red dye was used respectively as compared with WR7 and WR18 isolates which showed lower values of degradation for all studied periods. The three isolates which have the highest capability to decolorize Congo red dye were identified according to morphological, physiological and biochemical tests. The results indicated that the isolates WR7, WR18 and WR30 were Bacillus subtilis, Pseudomonas aeruginosa, and Bacillus cereus respectively.

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Section: Results and Discussion: Bacterial Isolation And Screening Of...mentioning

confidence: 99%

Section: Optimum Conditions To Decolorize Congo Red Dyementioning

confidence: 99%

Bacterial Biodegradation of Congo Red Dye Using Local Bacterial Isolates

Al-Fayaad¹,

Khudhair²

2022

Iraqi Journal of Science

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“…Degradation by bacteria allows its metabolic pathways to use xenobiotic compounds as a substrate. It was seen and reported that bacterial decolorization processes either involve the use of pure bacterial culture (Lin et al, 2010;Haq and Raj, 2018;Patil et al, 2018;Chittal et al, 2019) or the multispecies consortium (Das and Mishra, 2017;Cao et al, 2019;Kumari and Rajoriya, 2019). Bacteria used to dispose of dyes and decolorize a huge spectrum of dyes that have been isolated and characterized are listed in Table 2.…”

Section: Bacterial Reductionmentioning

confidence: 99%

An Integrative Approach to Study Bacterial Enzymatic Degradation of Toxic Dyes

et al. 2022

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Synthetic dyes pose a large threat to the environment and consequently to human health. Various dyes are used in textile, cosmetics, and pharmaceutical industries, and are released into the environment without any treatment, thus adversely affecting both the environment and neighboring human populations. Several existing physical and chemical methods for dye degradation are effective but have many drawbacks. Biological methods over the years have gained importance in the decolorization and degradation of dye and have also overcome the disadvantages of physiochemical methods. Furthermore, biological methods are eco-friendly and lead to complete decolorization. The mechanism of decolorization and degradation by several bacterial enzymes are discussed in detail. For the identification of ecologically sustainable strains and their application at the field level, we have focused on bioaugmentation aspects. Furthermore, in silico studies such as molecular docking of bacterial enzymes with dyes can give a new insight into biological studies and provide an easy way to understand the interaction at the molecular level. This review mainly focuses on an integrative approach and its importance for the effective treatment and decolorization of dyes.

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Textile Industrial Effluent Treatment by Azo Dye Decolorizing Bacterial Consortium

Cited by 2 publications

References 12 publications

Bacterial Biodegradation of Congo Red Dye Using Local Bacterial Isolates

Bacterial Biodegradation of Congo Red Dye Using Local Bacterial Isolates

An Integrative Approach to Study Bacterial Enzymatic Degradation of Toxic Dyes

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