Decolourization and biodegradation of methylene blue dye by a ligninolytic enzyme-producing Bacillus thuringiensis: Degradation products and pathway

Wu, Kangli; Shi, Meiling; Pan, Xiaomei; Zhang, Jianqiang; Zhang, Xiaomeng; Shen, Tong; Tian, Yongqiang

doi:10.1016/j.enzmictec.2022.109999

Cited by 76 publications

(21 citation statements)

References 59 publications

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“…Alkaykh et al (2020) reported the effect of pH for the MB dye degradation, where at pH2, it shows the 15% removal of MB dyes; however, at pH 9, it shows 60% MB dye removal . Wu et al (2022) studied the effect of pH from 4 to 9 for the methylene dye degradation that possesses under acidic condition pH 4 is 63.88% degradation of the MB dye; however, at pH 9 basic condition, it shows 60.73% degradation, but at pH 6 neutral condition, it shows the 95.94% degradation of MB dye removal . Abbasi and Hasanpour, (2017) studied the effect of pH from 4 to 10 that shows at pH 7 its higher efficiency of 99% MO dye removal than at pH 4 and pH 10 .…”

Section: Photocatalytic Activity For the Remediation Of Organic Pollu...mentioning

confidence: 99%

“…59 Wu et al (2022) studied the effect of pH from 4 to 9 for the methylene dye degradation that possesses under acidic condition pH 4 is 63.88% degradation of the MB dye; however, at pH 9 basic condition, it shows 60.73% degradation, but at pH 6 neutral condition, it shows the 95.94% degradation of MB dye removal. 60 Abbasi and Hasanpour, (2017) studied the effect of pH from 4 to 10 that shows at pH 7 its higher efficiency of 99% MO dye removal than at pH 4 and pH 10. 61 Cai et al (2017) studied the effect of pH at 3−9 that represents that at pH 3 and 5, it shows the higher decolorization efficiency of MO at 99 and 98%; however, at pH 9 alkaline medium, it shows 88% of MO decolorization efficiency.…”

Section: −•mentioning

confidence: 99%

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Green Biosynthesis of Tin Oxide Nanomaterials Mediated by Agro-Waste Cotton Boll Peel Extracts for the Remediation of Environmental Pollutant Dyes

et al. 2022

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The sustainable synthesis of metal oxide materials provides an ecofriendly and more exciting approach in the domain of a clean environment. Besides, plant extracts to synthesize nanoparticles have been considered one of the more superior ecofriendly methods. This paper describes the biosynthetic preparation route of three different sizes of tetragonal structure SnO 2 nanoparticles (SNPs) from the agro-waste cotton boll peel aqueous extract at 200, 500, and 800 °C for 3 h and represents a low-cost and alternative preparation method. The samples were characterized by X-ray diffraction, Fourier transform infrared spectrophotometry, ultraviolet–visible absorption spectroscopy, high-resolution transmission electron microscopy (HR-TEM), and energy-dispersive X-ray spectroscopy. Surface area and porosity size distribution were identified by nitrogen adsorption–desorption isotherms and Brunauer–Emmett–Teller analysis. The photocatalytic properties of the SNP samples were studied against methylene blue (MB) and methyl orange (MO), and the degradation was evaluated with three different size nanomaterials of 3.97, 8.48, and 13.43 nm. Photocatalytic activities were carried out under a multilamp (125 W Hg lamps) photoreactor. The smallest size sample exhibited the highest MB degradation efficiency within 30 min than the most significant size sample, which lasted 80 min. Similarly, in the case of MO, the smallest sample showed a more superior degradation efficiency with a shorter period (40 min) than the large-size samples (100 min). Therefore, our studies suggested that the developed SNP nanomaterials could be potential, promising photocatalysts against the degradation of industrial effluents.

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Section: Photocatalytic Activity For the Remediation Of Organic Pollu...mentioning

confidence: 99%

Section: −•mentioning

confidence: 99%

Green Biosynthesis of Tin Oxide Nanomaterials Mediated by Agro-Waste Cotton Boll Peel Extracts for the Remediation of Environmental Pollutant Dyes

et al. 2022

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“…O comprimento de onda de máxima absorbância do corante azul de metileno foi obtido por meio de medidas de absorbância molecular no espectrofotômetro UV-VIS, em diferentes concentrações de soluções aquosas do corante. Na Figura 7 pode-se observar uma banda entre os comprimentos de onda 630 e 700 nm, com um pico em 665 nm, confirmando o comprimento de onda de máxima absorbância do corante azul de metileno encontrado na literatura [16,43]. A fim de acompanhar a remoção do corante azul de metileno nos ensaios de adsorção, uma curva de calibração foi obtida, relacionando a concentração do corante com sua absorbância no comprimento de onda 665 nm.…”

Section: Quantificação Do Azul De Metilenounclassified

Estudo da eficiência do uso de bambu como bioadsorvente na remoção de azul de metileno

et al. 2022

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RESUMO O corante azul de metileno, amplamente utilizado na indústria têxtil, é capaz de causar sérios danos, caso despejado nos corpos hídricos sem o devido tratamento. O objetivo deste trabalho foi estudar a eficiência do uso de bambu, in natura e carvão vegetal, como bioadsorvente na remoção do corante azul de metileno. Para isso, o bambu in natura e o bambu ativado termicamente foram produzidos e caracterizados por meio de análises de área superficial específica, termogravimétricas, microscopia eletrônica de varredura e espectroscopia no infravermelho. Ensaios de adsorção, em batelada, foram realizados com os bioadsorventes produzidos, utilizando planejamento experimental, do tipo fatorial 2³ e repetição do ponto central. Foram obtidas as condições do processo de adsorção para o bambu in natura, com 16 g/L de concentração de adsorvente, 50 mg/L de concentração de corante e pH =10, alcançando uma eficiência de remoção de 98,1%. As mesmas condições foram usadas com o bambu carvão, obtendo-se uma eficiência de remoção do corante de 92,2%. A diferença observada na porcentagem de remoção do corante deve-se às características de cada bioadsorvente. Os resultados demonstraram que o uso do bambu como bioadsorvente pode ser uma alternativa eficiente e sustentável para o tratamento de efluente com corantes pelo processo de adsorção.

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“…one tiazinic dye: 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride or Methylene blue (MB) and one Triphenylmethanic dye: 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl) bis(2,6-dibr omophenol) or Bromothymol Blue (BPB). All pigments were added to the fresh media prior to the inoculum addition (Wu, K. et al 2022). All experiments were performed in duplicate.…”

Section: Effect Of Fungal Pigments Over Enzyme Activitymentioning

confidence: 99%

An innovate approach of fungal pigments as inducing the oxidase activity applied to bioelectrode systems

Silva

Cavalcanti

Nascimento

et al. 2022

RSD

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The use of enzymes as part of bioelectrodes in Biofuel Cells (BFC) has been studied more often every day, aiming to reduce the operational and manufacturing high costs due in part to the use of metallic conventional catalyst. The in-situ production of biocatalysts can reduce even further these costs. However, some biocatalysts need the supplementation of external electrochemical mediators to achieve good coulombic efficiencies when these are used attached to bioelectrodes. In this work, two filamentous fungi were isolated from the soil of the Brazilian Caatinga Biome, that showed high oxidase activity in media containing two synthetic electronic shuttles, compared with four natural fungal pigments. Parameters such as substrate consumption, oxidase activity and microbial growth were evaluated. As was observed, all natural mediator pigments induced the enzyme production, observing an increase on enzyme production of more than 50% especially in two of them.

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Decolourization and biodegradation of methylene blue dye by a ligninolytic enzyme-producing Bacillus thuringiensis: Degradation products and pathway

Cited by 76 publications

References 59 publications

Green Biosynthesis of Tin Oxide Nanomaterials Mediated by Agro-Waste Cotton Boll Peel Extracts for the Remediation of Environmental Pollutant Dyes

Green Biosynthesis of Tin Oxide Nanomaterials Mediated by Agro-Waste Cotton Boll Peel Extracts for the Remediation of Environmental Pollutant Dyes

Estudo da eficiência do uso de bambu como bioadsorvente na remoção de azul de metileno

An innovate approach of fungal pigments as inducing the oxidase activity applied to bioelectrode systems

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