Simultaneous decolorization of sulfonated azo dyes and reduction of hexavalent chromium under high salt condition by a newly isolated salt-tolerant strain Bacillus circulans BWL1061

Liu, Weijie; Liu, Cong; Liu, Liang; You, Yanting; Jiang, Jihong; Zhou, Zhengkun; Dong, Zhen

doi:10.1016/j.ecoenv.2017.03.005

Cited by 65 publications

(17 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The activities of Lac and LiP in the cell extract of halotolerant yeast strain Galactomyces geotrichum GG were significantly reduced, indicating the inhibition of Lac and LiP by higher salinity (Guo et al, 2019). Similarly, the inhibition of salinity to the LMEs activities azo dye degrading microorganisms under high salt t condition was also reported previously (Hussain et al, 2013;Liu et al, 2017;Song et al, 2017). Compared with the results of the previous reports mentioned above , Zhao et al (2014) demonstrated that LiP, Lac, and NADH-DCIP reductase were key bacterial enzymes produced by Bacillus sp.…”

Section: Enzyme Activity and Performancesupporting

confidence: 61%

“…The effluents of the wastewater textile industry contain azo dyes and a high concentration of salts. It has been reported that the presence of salt induces the high osmotic pressure, which challenges microorganisms in the processing of textile wastewater (Khalid et al, 2012;Liu et al, 2017;Yang et al, 2018;Guo et al, 2019). Halophilic and halotolerant (salt-tolerant) microorganisms have biological advantages and provide high treatment efficiency, especially for the high concentration of salty azo dye wastewater (Yu et al, 2015;Guo et al, 2019;Giovanella et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance of a Newly Isolated Salt-Tolerant Yeast Strain Sterigmatomyces halophilus SSA-1575 for Azo Dye Decolorization and Detoxification

et al. 2020

View full text Add to dashboard Cite

The effective degradation of hazardous contaminants remains an intractable challenge in wastewater processing, especially for the high concentration of salty azo dye wastewater. However, some unique yeast symbionts identified from the termite gut system present an impressive function to deconstruct some aromatic compounds, which imply that they may be valued to work on the dye degradation for various textile effluents. In this investigation, a newly isolated and unique yeast strain, Sterigmatomyces halophilus SSA-1575, was identified from the gut system of a wood-feeding termite (WFT), Reticulitermes chinensis. Under the optimized ambient conditions, the yeast strain SSA-1575 showed a complete decolorization efficiency on Reactive Black 5 (RB5) within 24 h, where this azo dye solution had a concentration of a 50 mg/L RB5. NADH-dichlorophenol indophenol (NADH-DCIP) reductase and lignin peroxidase (LiP) were determined as the key reductase and oxidase of S. halophilus SSA-1575. Enhanced decolorization was recorded when the medium was supplemented with carbon and energy sources, including glucose, ammonium sulfate, and yeast extract. To understand a possible degradation pathway well, UV-Vis spectroscopy, FTIR and Mass Spectrometry analyses were employed to analyze the possible decolorization pathway by SSA-1575. Determination of relatively high NADH-DCIP reductase suggested that the asymmetric cleavage of RB5 azo bond was mainly catalyzed by NADH-DCIP reductase, and finally resulting in the formation of colorless aromatic amines devoid of any chromophores. The ecotoxicology assessment of RB5 after a decolorization processing by SSA-1575, was finally conducted to evaluate the safety of its metabolic intermediates from RB5. The results of Microtox assay indicate a capability of S. halophilus SSA-1575, in the detoxification of the toxic RB5 pollutant. This study revealed the effectiveness of halotolerant yeasts in the eco-friendly remediation of hazardous pollutants and dye wastewater processing for the textile industry.

show abstract

Section: Enzyme Activity and Performancesupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Performance of a Newly Isolated Salt-Tolerant Yeast Strain Sterigmatomyces halophilus SSA-1575 for Azo Dye Decolorization and Detoxification

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Hence, the above laccase should be an ideal candidate for the cleaning of textile effluent (Liu et al 2015). Liu et al (2017) isolated salt-tolerant strain Bacillus circulans BWL1061 to remove 50 mg/L methyl orange and 50 mg/L Cr(VI) under anaerobic condition with 60 g/L NaCl. During the decolorization process, the Cr(VI) reduction occurred preferentially over the dye decolorization due to the dominant utilization of electron by Cr(VI).…”

Section: Role Of Laccase In Degradation Of Dyementioning

confidence: 99%

Bacterial laccase: recent update on production, properties and industrial applications

Chauhan

Goradia

Saxena³

2017

3 Biotech

226

114

View full text Add to dashboard Cite

Laccases (benzenediol: oxygen oxidoreductase, EC 1.10.3.2) are multi-copper enzymes which catalyze the oxidation of a wide range of phenolic and non-phenolic aromatic compounds in the presence or absence of a mediator. Till date, laccases have mostly been isolated from fungi and plants, whereas laccase from bacteria has not been well studied. Bacterial laccases have several unique properties that are not characteristics of fungal laccases such as stability at high temperature and high pH. Bacteria produce these enzymes either extracellularly or intracellularly and their activity is in a wide range of temperature and pH. It has application in pulp biobleaching, bioremediation, textile dye decolorization, pollutant degradation, biosensors, etc. Hence, comprehensive information including sources, production conditions, characterization, cloning and biotechnological applications is needed for the effective understanding and application of these enzymes at the industrial level. The present review provides exhaustive information of bacterial laccases reported till date.

show abstract

“…In the biological methods, many researchers use microbes such as fungi and bacteria that have the ability to decolorize azo dye by synthesizing specific enzymes for azo dye degradation. Laccase was known as one of the enzyme that used to degrade azo dye beside azoreductase and NADH-DCIP reductase 8 . The action of laccase during degradation of azo bond was proved to be through nonspecific oxidation mechanism instead of azo bond cleavage 9 .…”

Section: Introductionmentioning

confidence: 99%

Decolorization of Synthetic Azo Dyes under Anaerobic Condition in A Continuous Stirred Tank Reactor

Latif¹,

Ariffin²,

Rudiyanto³

et al. 2021

J Pure Appl Microbiol

View full text Add to dashboard Cite

Biological treatment for textile wastewater always has a limitation in term of time of reaction and uncertainty along the process. This study focused on the decolorization of synthetic azo dyes in batch reactors with controlled thermotolerant anaerobic conditions. Less-volatile digested sludge collected from a palm oil biogas reactor was used as the organic biodegradation agent for azo dyes. Digested sludge contains high amounts of microbes with uncertain species viable for decolorization purposes. Sodium acetate trihydrate (C2H9NaO5) was used as carbon source and mixed with a specific composition of minimum salt media (MSM) in batch reactors as an additional nutrient. Digested sludge both in mesophilic (35°C) and thermophilic (55°C) conditions were found to be capable of decolorizing 100, 200 and 300 ppm of three types of azo dyes: Reactive Green 19 (45.56%, 69.73%; 63%, 73.49%; 70.02%, 75.92%), Reactive Orange 16 (46.08%, 78.4%; 64.21%, 85.52%; 74.95%, 85.91%) and Reactive Red 120 (29.11%, 85.32%; 63.35%, 87.69%; 72.02%, 89.5%) respectively after 7 days incubation time. Statistical analysis also showed that the anaerobic thermophilic conditions had significantly accelerated the decolorization process. The anaerobic thermophilic environment will be a good factor to include in future textile wastewater treatment plants.

show abstract

Simultaneous decolorization of sulfonated azo dyes and reduction of hexavalent chromium under high salt condition by a newly isolated salt-tolerant strain Bacillus circulans BWL1061

Cited by 65 publications

References 36 publications

Performance of a Newly Isolated Salt-Tolerant Yeast Strain Sterigmatomyces halophilus SSA-1575 for Azo Dye Decolorization and Detoxification

Performance of a Newly Isolated Salt-Tolerant Yeast Strain Sterigmatomyces halophilus SSA-1575 for Azo Dye Decolorization and Detoxification

Bacterial laccase: recent update on production, properties and industrial applications

Decolorization of Synthetic Azo Dyes under Anaerobic Condition in A Continuous Stirred Tank Reactor

Contact Info

Product

Resources

About