Modification of Chlorella vulgaris carbon with Fe3O4 nanoparticles for tetracycline elimination from aqueous media

Anbarani, Mohaddeseh Zahmatkesh; Ramavandi, Bahman; Bonyadi, Ziaeddin

doi:10.1016/j.heliyon.2023.e14356

Cited by 16 publications

(3 citation statements)

References 42 publications

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“…Esmaeili et al 19 removed polyethylene MPs using C. vulgaris . They found that the algae had the maximum elimination rate of 84% in the presence of a pH of 10 and a PE level of 250 mg L −1 33 . Also, Cunha et al (2020 22 ) carried out a research by a biopolymer derived from microalgae to remove nanoplastics and MPs from wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Using Spirulina platensis as a natural biocoagulant for polystyrene removal from aqueous medium: performance, optimization, and modeling

Eydi Gabrabad,

Yari,

Bonyadi

2024

Sci Rep

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Microplastics (MPs) are newly recognized contaminants that result from the breakdown of plastics released into aquatic environments. This study focuses on the elimination of polystyrene (PS) using S. platensis, a natural biocoagulant, from aqueous solutions. The research investigated several crucial variables, including the initial level of PS ranging from 100 to 900 mg L−1, pH levels from 4 to 10, the contact time of 20–40 min, and doses of S. platensis ranging from 50 to 250 mg L−1. The analysis of the data revealed that the quadratic model offered the best fit for the experimental results. In the present study, we utilized S. platensis as a novel natural biocoagulant to effectively eliminate PS from aqueous solutions. Process optimization was performed using a Box–Behnken design (BBD). The best-fitting model for the data was the quadratic model. The results displayed that the highest elimination of PS (81%) was occurred at a pH of 4, with a contact time of 30 min, a dose of S. platensis at 250 mg L−1, and a PS concentration of 500 mg L−1. These findings show that S. platensis has a significant effect on removing PS from the aquatic environment. Algae can serve as a convenient and eco-friendly method, replacing chemical coagulants, to effectively remove MPs from the aquatic environment.

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Section: Introductionmentioning

confidence: 99%

Using Spirulina platensis as a natural biocoagulant for polystyrene removal from aqueous medium: performance, optimization, and modeling

Eydi Gabrabad,

Yari,

Bonyadi

2024

Sci Rep

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“…According to the report of the World Health Organization, these pharmaceutical compounds are responsible for 25% of water pollution worldwide 12 . Tetracycline (TTC) was considered one of the antibiotics used in 1948 to treat various microbial infections, including chlamydia, anthrax, syphilis, cholera, Lyme disease, and pneumonia 13 . This antibiotic is the second most commonly used antibiotic in the world.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of tetracycline on polyvinyl chloride microplastics in aqueous environments

Zahmatkesh Anbarani,

Najafpoor,

Barikbin

et al. 2023

Sci Rep

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Microplastics (MPs), as carriers of organic pollutants in the environment, have become a growing public concern in recent years. Tetracycline (TTC) is an antibiotic that can be absorbed by MPs and have a harmful effect on human health. Therefore, this study was conducted with the aim of investigating the adsorption rate of TTC onto polyvinyl chloride (PVC) MPs. In addition, the adsorption mechanism of this process was studied using isothermal, kinetic, and thermodynamic models. For this purpose, experimental runs using the Box-Behnken model were designed to investigate the main research parameters, including PVC dose (0.5–2 g/L), reaction time (5–55 min), initial antibiotic concentration (5–15 mg/L), and pH (4–10). Based on the research findings, the highest TTC adsorption rate (93.23%) was obtained at a pH of 10, a contact time of 55 min, an adsorbent dose of 1.25 g/L, and an antibiotic concentration of 10 mg/L. The study found that the adsorption rate of TTC followed the pseudo-second-order and Langmuir models. Thermodynamic data indicated that the process was spontaneous, exothermic, and physical. Increasing ion concentration decreased TTC adsorption, and distilled water had the highest adsorption, while municipal wastewater had the lowest adsorption. These findings provide valuable insights into the behavior of MPs and organic pollutants, underscoring the importance of conducting additional research and implementing measures to mitigate their detrimental effects on human health and the environment.

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“…The primary focus of yeast-mediated azo dye decolorization involves the pivotal role of azo-reductases (enzymes) in catalyzing the cleavage of azo groups (─N═N─). [19,20] However, these methods often fall short in achieving complete dye removal and generate harmful sludge as by-product, posing additional disposal challenges, which are costly or require a bioreactor for cell culturing. Additionally, they…”

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confidence: 99%

Waste‐Valorized Nanowebs for Crystal Violet Removal from Water

Maqbool,

Cavallini,

Lasemi

et al. 2024

Small Science

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Lightweight, metal‐free, sustainable, and reusable adsorbent materials are of paramount significance in addressing the challenges of wastewater treatment. Accordingly, semi‐crystalline nanocellulose (NC) is extracted from tissue paper waste and used to modify polyacrylonitrile (PAN) to produce electrospun nanowebs with strand diameters from ≈180–300 nm. The incorporation of NC into PAN is confirmed by infrared and Raman spectroscopy and X‐Ray diffraction. When tested for crystal violet (CV) adsorption, NC‐modified PAN (20% NC@PAN) exhibits the highest CV removal capacity, achieving 91–94% removal over three cycles each, demonstrating exceptional recyclability. In contrast, unmodified PAN significantly decreases in CV adsorption capacity (from 59% to 48% in the third cycle), possibly due to an increased (≈36%) nanofiber diameter. The adsorption kinetics, exhibiting pseudo‐second order, interparticle (in between nanofibers) diffusion, and Elovich kinetic models emphasize the role of multilayer CV adsorption through reversible chemical interactions. Confocal micro‐Raman spectroscopy unveils a multifaceted CV adsorption mechanism, suggesting both surface and multilayer diffusion, with NC‐enhancing interactions. These findings demonstrate the potential of NC‐modified PAN nanowebs as effective and environmentally sustainable adsorbents for removing CV from aqueous solutions, suggesting promising practical applications.

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Modification of Chlorella vulgaris carbon with Fe3O4 nanoparticles for tetracycline elimination from aqueous media

Cited by 16 publications

References 42 publications

Using Spirulina platensis as a natural biocoagulant for polystyrene removal from aqueous medium: performance, optimization, and modeling

Using Spirulina platensis as a natural biocoagulant for polystyrene removal from aqueous medium: performance, optimization, and modeling

Adsorption of tetracycline on polyvinyl chloride microplastics in aqueous environments

Waste‐Valorized Nanowebs for Crystal Violet Removal from Water

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