Biodegradation of Methylene Blue by Bacteria Strains Isolated From Contaminated Soil

Ariffin, Fazilah; ANUAR, NUR EQA MARDIHAH CHE

doi:10.55230/mabjournal.v51i3.2190

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…Methylene blue is extensively used in the industrial section for dying and painting, resulting in huge amounts of colored discharge and producing many negative environmental impacts [39][40][41]. Herein, three adsorbent materials including the core-double shell structures from Fe 3 O 4 core-TiO 2 /mesoSiO 2 (R1-0.2), Fe 3 O 4 core-TiO 2 /mesoSiO 2 (R1-0.4) and Fe 3 O 4 core-mesoSiO 2 /TiO 2 (R2) double shell nanoparticles were applied for methylene blue dyes by adsorptive removal.…”

Section: Adsorptive Remediation Investigationmentioning

confidence: 99%

Fabrication of Fe3O4 core-TiO2/mesoSiO2 and Fe3O4 core-mesoSiO2/TiO2 Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

El-Toni,

Habila,

Sheikh

et al. 2023

Nanomaterials

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Herein, Fe3O4 core-TiO2/mesoSiO2 and Fe3O4 core-mesoSiO2/TiO2 double shell nanoparticles were prepared by first (R1) and second (R2) routes and applied for the removal of methylene blue. The reported adsorption capacities for R1-0.2, R1-0.4 and R2 samples were 128, 118 and 133 mg.g−1, respectively, which were obtained after 80 min as equilibrium contact time, and pH of 6 using a methylene blue concentration of 200 ppm. The adsorption of methylene blue using the prepared Fe3O4 core-meso SiO2/TiO2 double shell was analyzed by kinetic and isotherms models. In addition, thermodynamic investigations were applied to assess the spontaneous nature of the process. The obtained results confirmed that the pseudo-second order model is well fitted with the adsorption data and the Freundlich-isotherm assumption suggested a multilayer adsorption mechanism. In addition, results of the thermodynamic investigation indicated that ΔG° was in the range of −2.3 to −6.8 kJ/mol for R1-0.2, −2.8 to −6.3 kJ/mol for R1-0.4 and −2.0 to −5.2 kJ/mol for R2. In addition, the ΔH° and ΔS° values were found in the range of 26.4 to 36.19 kJ.mol−1 and 94.9 to 126.3 Jmol−1 K−1, respectively. These results confirm that the surfaces of Fe3O4 core-mesoSiO2/TiO2 and Fe3O4 core-TiO2/mesoSiO2 double shell exhibit a spontaneous tendency to adsorb methylene blue from the aqueous solutions. The achieved performance of Fe3O4 core-meso SiO2/TiO2 and Fe3O4 core-TiO2/meso SiO2 double shell as adsorbent for methylene blue removal will encourage future research investigations on the removal of a broad range of contaminants from wastewater.

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Section: Adsorptive Remediation Investigationmentioning

confidence: 99%

Fabrication of Fe3O4 core-TiO2/mesoSiO2 and Fe3O4 core-mesoSiO2/TiO2 Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

El-Toni,

Habila,

Sheikh

et al. 2023

Nanomaterials

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“…Eslami et al ( 2016 ) isolated a bacterial strain of P. aeruginosa from contaminated soil and used it for the removal of methylene blue from an aqueous solution, which showed high potency in the degradation of MB from 82.2 to 97.8% at the best concentration of 200 mg/ml, while the degradation efficiency was decreased to 43.8% after an increase in the concentration of methylene blue to 1000 mg/ml. Furthermore, in another study, 10.5% of MB degradation was observed by P. aeruginosa at an optimum temperature of 35 °C after 8 days of incubation (Ariffin and Anuar 2022 ).…”

Section: Discussionmentioning

confidence: 93%

“…According to the literature, P. aeruginosa is a pathogenic strain and has a high potency to degrade methylene blue under specific time durations and environmental conditions (Ariffin and Anuar 2022 ). Therefore, we also investigated the biodegradation of methylene blue at various concentrations from 500 to 15.625 μg/ml by using P. aeruginosa in the lab.…”

Section: Discussionmentioning

confidence: 99%

In vitro study: methylene blue-based antibacterial photodynamic inactivation of Pseudomonas aeruginosa

Zada,

Anwar,

Imtiaz

et al. 2024

Appl Microbiol Biotechnol

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Pseudomonas aeruginosa is one of the most antibiotic-resistant and opportunistic pathogens in immunocompromised and debilitated patients. It is considered the cause of most severe skin infections and is frequently found in hospital burn units. Due to its high antibiotic resistance, eliminating P. aeruginosa from skin infections is quite challenging. Therefore, this study aims to assess the novel in vitro antibacterial activity of methylene blue using a 635-nm diode laser to determine the effective power and energy densities for inhibition of P. aeruginosa. The strain was treated with various concentrations of methylene blue and 635-nm diode laser at powers of 300 mW/cm2 and 250 mW/cm2. The diode laser’s potency in the photo-destruction of methylene blue and its degradation through P. aeruginosa were also evaluated. Colony-forming unit (CFU)/ml, fluorescence spectroscopy, optical density, and confocal microscopy were used to measure the bacterial killing effect. As a result, the significant decrease of P. aeruginosa was 2.15-log10, 2.71-log10, and 3.48-log10 at 60, 75, and 90 J/cm2 after excitation of MB for 240, 300, and 360 s at a power of 250 mW/cm2, respectively. However, a maximum decrease in CFU was observed by 2.54-log10 at 72 J/cm2 and 4.32-log10 at 90 and 108 J/cm2 after 300 mW/cm2 of irradiation. Fluorescence images confirmed the elimination of bacteria and showed a high degree of photo-destruction compared to treatment with methylene blue and light alone. In conclusion, MB-induced aPDT demonstrated high efficacy, which could be a potential approach against drug-resistant pathogenic bacteria. Key points • Combination of methylene blue with 635-nm diode laser for antibacterial activity. • Methylene blue photosensitizer is employed as an alternative to antibiotics. • aPDT showed promising antibacterial activity against Pseudomonas aeruginosa.

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Fabrication of Fe3O4 Core-TiO2/mesoSiO2 and Fe3O4 Core-mesoSiO2/TiO2 Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

El‐Toni¹,

Habila²,

Sheikh³

et al. 2023

Preprint

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Water pollution with dyes is a critical environmental issue because off the huge amount of dyes disbarred annually which cause severe damage for the ecosystem and human life. On the other hand, the core-shell based magnetic materials have showed amazing character for controlling the material synthesis with targeted structure to enhance the adsorptive-removal of pollutants. Herein, Fe3O4 core-TiO2/mesoSiO2 and Fe3O4 core-mesoSiO2/TiO2 double shell nanoparticles were prepared by first (R1) and second (R2) routes. The preparation procedure is controlled to prepare the magnetic core with further coating layers from silica and titania for the uptake of methylene blue from aqueous solutions. The reported adsorption capacities for R1-0.2, R1-0.4 and R2 samples were 46, 38 and 50 mg/g respectively at pH 6 after 80 min contact time form 50 ppm methylene blue solution. The adsorption process of methylene blue onto Fe3O4core-meso SiO2/TiO2 double shell was well fitted with the pseudo-second-order kinetic model and Freundlish isotherm which suggested the quick and multilayer adsorption mechanism. In addition, results of thermodynamic investigation indicated that the surfaces of Fe3O4 core-mesoSiO2/TiO2 and Fe3O4 core-TiO2/mesoSiO2 double shell exhibit spontaneous tendency to adsorb methylene blue from the aqueous solutions. These results will encourage the further application of Fe3O4 core-meso SiO2/TiO2 and Fe3O4 core-TiO2/meso SiO2 double shell for removal of other dyes and pollutants from wastewater.

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Biodegradation of Methylene Blue by Bacteria Strains Isolated From Contaminated Soil

Cited by 3 publications

References 29 publications

Fabrication of Fe3O4 core-TiO2/mesoSiO2 and Fe3O4 core-mesoSiO2/TiO2 Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

Fabrication of Fe3O4 core-TiO2/mesoSiO2 and Fe3O4 core-mesoSiO2/TiO2 Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

In vitro study: methylene blue-based antibacterial photodynamic inactivation of Pseudomonas aeruginosa

Fabrication of Fe<sub>3</sub>O<sub>4</sub> Core-TiO<sub>2</sub>/mesoSiO<sub>2</sub> and Fe<sub>3</sub>O<sub>4</sub> Core-mesoSiO<sub>2</sub>/TiO<sub>2</sub> Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

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