Alginate–based aerogel fibers with a sheath–core structure for highly efficient methylene blue adsorption via directed freezing wet–spinning

Guan, Fucheng; Tao, Jing; Yao, Qiang; Li, Zheng; Zhang, Yihang; Feng, Shi; Sun, Jianbin; Yang, Qiang; Song, Xuecui; Guo, Jing; Liu, Yuanfa

doi:10.1016/j.colsurfa.2023.132706

Cited by 6 publications

(2 citation statements)

References 61 publications

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“…Finally, the removal efficiency (RE, %) and adsorption capacity (QE, mg/g) are expressed by Eqs 1 and 2 respectively. Here, Co (mg/L) and Cf (mg/ L) denote the initial and final concentrations of the dye, m represents the mass of the adsorbent in grams, and V signifies the volume of the solution (Obayomi et al, 2023;Wang et al, 2023;Guan et al, 2024).…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

The application of magnetite biochar composite derived from parthenium hysterophorus for the adsorption of methylene blue from aqueous solution

Teweldebrihan,

Gnaro,

Dinka

2024

Front. Environ. Sci.

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The removal of toxic and harmful dyes like methylene blue (MB) from textile wastewater is necessary to reduce environmental pollution. Therefore, this study is aimed at removing MB from an aqueous solution using magnetite-doped biochar of parthenium hysterophorus. Biochar was prepared through pyrolysis techniques at 500 ℃ for 2 h whereas the magnetite and composite material were developed using coprecipitation methods. Herein, NaNO3 and FeSO4. 7H2O were utilized as precursor materials and NaOH as a precipitating agent for preparation of magnetite. Furthermore, pH point of zero charge (pHpzc), Scanning Electron microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Diffraction (XRD) are characterization techniques used to evaluate the nature of the composite material. On the other hand, a full factorial design involving four factors at two levels (24) such as pH (3 and 9), contact time (10 and 40 min), initial dye concentration (100 and 150 mg/L) and adsorbent dosage of 0.01 and 0.04 g/100 mL was used to design and optimize the batch adsorption of MB from an aqueous solution. As a result, a maximum removal efficiency of 99.99% was attained at optimum operating conditions of pH 9, contact time 40 min, initial MB concentration 100 mg/L and adsorbent dosage of 0.04 g/100 mL. Langmuir, Freundlich and Temkin isotherm models were used to investigate the adsorption isotherm in which Freundlich isotherm with a maximum R2 of 0.98 was found to describe the adsorption process inferring multilayer and heterogeneous surface interaction. Additionally, the thermodynamics study depicts that the nature of the adsorption is spontaneous, endothermic and feasible. On the other hand, the chemosorption nature is revealed by the pseudo second kinetics model with a maximum R2 of 0.99. Finally, the remarkable reusability ranging from 99.98% to 97.6% for five consecutive cycles proved that the magnetic biochar derived from parthenium hysterophorus can be used as an effective adsorbent for the decolourization of MB saturated effluent at an industrial scale.

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Section: Batch Adsorption Experimentsmentioning

confidence: 99%

The application of magnetite biochar composite derived from parthenium hysterophorus for the adsorption of methylene blue from aqueous solution

Teweldebrihan,

Gnaro,

Dinka

2024

Front. Environ. Sci.

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“…The physio-chemical parameters of different polymers play a very significant role in defining the properties of the subsequent aerogel. Some important properties of polymers include the surface area of the polymer [76,77], chemical structure [78], porosity, density, polymer solubility, thermal stability [79], and the hydrophilic or hydrophobic nature of any specific polymer. Generally, for synthesising aerogels, biopolymers are mainly considered to be utilised in biomedical applications.…”

Section: Important Properties Of Polymers Used For Biomedical Applica...mentioning

confidence: 99%

Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review

Fijalkowski,

Ali,

Qamer

et al. 2023

Gels

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The inherent disadvantages of traditional non-flexible aerogels, such as high fragility and moisture sensitivity, severely restrict their applications. To address these issues and make the aerogels efficient, especially for advanced medical applications, different techniques have been used to incorporate flexibility in aerogel materials. In recent years, a great boom in flexible aerogels has been observed, which has enabled them to be used in high-tech biomedical applications. The current study comprises a comprehensive review of the preparation techniques of pure polymeric-based hybrid and single-component aerogels and their use in biomedical applications. The biomedical applications of these hybrid aerogels will also be reviewed and discussed, where the flexible polymeric components in the aerogels provide the main contribution. The combination of highly controlled porosity, large internal surfaces, flexibility, and the ability to conform into 3D interconnected structures support versatile properties, which are required for numerous potential medical applications such as tissue engineering; drug delivery reservoir systems; biomedical implants like heart stents, pacemakers, and artificial heart valves; disease diagnosis; and the development of antibacterial materials. The present review also explores the different mechanical, chemical, and physical properties in numerical values, which are most wanted for the fabrication of different materials used in the biomedical fields.

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Sustainable materials for novel food packaging based on alginate, methylcellulose and glycerol films functionalized with gallic acid

Leyva-Jiménez,

Abellán-Dieguez,

Oliver-Simancas

et al. 2024

Future Foods

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Alginate–based aerogel fibers with a sheath–core structure for highly efficient methylene blue adsorption via directed freezing wet–spinning

Cited by 6 publications

References 61 publications

The application of magnetite biochar composite derived from parthenium hysterophorus for the adsorption of methylene blue from aqueous solution

The application of magnetite biochar composite derived from parthenium hysterophorus for the adsorption of methylene blue from aqueous solution

Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review

Sustainable materials for novel food packaging based on alginate, methylcellulose and glycerol films functionalized with gallic acid

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