Electrospun polyacrylonitrile-Moringa Olifera based nanofibrous bio-sorbent for remediation of Congo red dye

Narayan, Madhulika; Sadasivam, Rajkumar; Gopinath, P.; Saravanan, Pichiah

doi:10.1016/j.jenvman.2022.115294

Cited by 13 publications

(6 citation statements)

References 33 publications

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“…Recently, nanoencapsulation has been used as a strategy for overcoming the drawbacks of traditional drug delivery methods, such as low bioavailability, adverse reactions, and unpleasant organoleptic qualities [ 79 , 91 , 92 , 93 , 94 ].…”

Section: Encapsulation Methods Of Bioactive Compounds From ...mentioning

confidence: 99%

“…Hydrophobic electrospun nanofibers averaged 450 ± 24 nm and encapsulated the oil efficiently, thus prolonging the oil shelf life [ 97 ]. Narayan et al [ 93 ] show the beneficial effect (∼88%) of 7% polyacrylonitrile-supported biosorbent ( M. oleifera 20 mg/mL) for the absorption of Congo red dye from an aqueous solution.…”

Section: Encapsulation Methods Of Bioactive Compounds From ...mentioning

confidence: 99%

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A Comprehensive Review of Moringa oleifera Bioactive Compounds—Cytotoxicity Evaluation and Their Encapsulation

Pop

Kerezsi

Ciont

2022

Foods

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Moringa oleifera Lam. has gained a lot of attention due to its potential use as a functional food not only for human health but also for animal health. Its bioactive molecules include carbohydrates, phenolic compounds, carotenoids, fatty acids, essential amino acids, and functional peptides. Despite significant efforts to isolate and characterize bioactive metabolites with health functions, few effective metabolites are accessible. The current review aims to describe the main processes for extracting and encapsulating bioactive compounds from Moringa oleifera for potential impact on food science and public health. Researchers have shown that different extraction techniques significantly impact the Moringa polysaccharides’ molecular structure and biological activity. Encapsulation has been proposed to reduce oxidative stability and entrap active agents within a carrier material to deliver bioactive molecules into foods. Currently, polysaccharides and proteins, followed by lipids, are used for material encapsulation. Recent techniques include spray drying, cross-linking gelation, freeze-drying, nanoencapsulation, electrospinning, and electrospraying. Moreover, these encapsulations can overlap concerns regarding the Moringa oleifera compounds’ cytotoxicity. Future studies should prioritize the effect of new encapsulation materials on Moringa extract and develop new techniques that consider both encapsulation cost and efficiency.

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Section: Encapsulation Methods Of Bioactive Compounds From ...mentioning

confidence: 99%

Section: Encapsulation Methods Of Bioactive Compounds From ...mentioning

confidence: 99%

A Comprehensive Review of Moringa oleifera Bioactive Compounds—Cytotoxicity Evaluation and Their Encapsulation

Pop

Kerezsi

Ciont

2022

Foods

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“…The accidental release of CR dye into lakes and rivers has a significant negative impact on the well-being of people and aquatic life owing to its very limited biodegradability and the mutagenic and carcinogenic properties of its converted benzidine form. This might result in symptoms that include diarrhea, nausea, allergies, vomiting, and digestive irritation in humans. − The azobenzene constituent of CR has been recognized to have a possible carcinogenicity factor of 1.08 × 10 –1 (mg/kg/day) if consumed orally …”

Section: Introductionmentioning

confidence: 99%

“…This might result in symptoms that include diarrhea, nausea, allergies, vomiting, and digestive irritation in humans. 12 − 14 The azobenzene constituent of CR has been recognized to have a possible carcinogenicity factor of 1.08 × 10 –1 (mg/kg/day) if consumed orally. 15 …”

Section: Introductionmentioning

confidence: 99%

Steric, Synergetic, Energetic Studies on the Impact of the Type of the Hybridized Polymers (Chitosan and β-Cyclodextrin) on the Adsorption Properties of Zeolite-A for Congo Red Dye

Farhan,

Abu-Taweel,

Sayed

et al. 2024

ACS Omega

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Zeolite-A was synthesized successfully from kaolinite and hybridized with two species of biopolymers (chitosan (CH/ Z) and β-cyclodextrin (CD/Z)). The obtained hybridized forms were assessed as potential adsorbents of Congo red synthetic dye (CR) with enhanced affinities and elimination capacities. The synthesized CD/Z and CH/Z hybrids demonstrated uptake capacities of 223.6 and 208.7 mg/g, which are significantly higher than single-phase zeolite-A (140.3 mg/g). The integrated polymers change the surface area, surface reactivity, and number of free active receptors that are already present. The classic isotherm investigations validate Langmuir equilibrium behavior for ZA and Freundlich properties for CD/Z and CH/Z. The steric parameters validate a strong increase in the existing active receptors after the incorporation of CD (CD/Z) to be 98.1 mg/g as compared to 83 mg/g for CH/Z and 60.6 mg/g for ZA, which illustrate the detected uptake behaviors. Moreover, the CR dye was adsorbed as several molecules per single site, reflecting the vertical uptake of these molecules by multimolecular mechanisms. The energetic assessment, considering both Gaussian energies and adsorption energies (<40 kJ/mol), validates the dominant impact of the physical mechanism during the sequestration of CR (dipole binding interactions (2−29 kJ/mol) and hydrogen bonds (<30 kJ/mol)), in addition to the considerable effect of ion exchange processes. Based on the thermodynamic parameters, the CR molecules were adsorbed by exothermic and spontaneous reactions.

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“…CR was also detected as a pollutant in water supplies, causing some health side effects such as irritation to the skin, eyes, respiratory system, and reproductive system [3,15]. The high biodegradable resistance of CR dye and the carcinogenic and mutagenic properties of its altered benzidine make its existence in water resources have strong negative impacts on human health (nausea, allergies, vomiting, irritation of the digestive system, and diarrhoea) as well as aquatic life [11,16,17].…”

Section: Introductionmentioning

confidence: 99%

Steric and Energetic Studies on the Synergetic Enhancement Effect of Integrated Polyaniline on the Adsorption Properties of Toxic Basic and Acidic Dyes by Polyaniline/Zeolite-A Composite

Zaidalkilani,

Farhan,

Sayed

et al. 2023

Molecules

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The synergetic enhancement effect of the polyaniline (PANI) integration process on the adsorption properties of the PANI/zeolite-A composite (PANI/ZA) as an adsorbent for malachite green and Congo red synthetic dyes was evaluated based on classic equilibrium modelling in addition to the steric and energetic parameters of advanced isotherm studies. The PANI/ZA composite displays enhanced adsorption capacities for both methylene blue (270.9 mg/g) and Congo red (235.5 mg/g) as compared to ZA particles (methylene blue (179.6 mg/g) and Congo red (140.3 mg/g)). The reported enhancement was illustrated based on the steric parameters of active site density (Nm) and the number of adsorbed dyes per active site (n). The integration of PANI strongly induced the quantities of the existing active sites that have enhanced affinities towards both methylene blue (109.2 mg/g) and Congo red (92.9 mg/g) as compared to the present sites on the surface of ZA. Every site on the surface of PANI/ZA can adsorb about four methylene blue molecules and five Congo red molecules, signifying the vertical orientation of their adsorbed ions and their uptake by multi-molecular mechanisms. The energetic investigation of the methylene blue (−10.26 to −16.8 kJ/mol) and Congo red (−9.38 to −16.49 kJ/mol) adsorption reactions by PANI/ZA suggested the operation of physical mechanisms during their uptake by PANI/ZA. These mechanisms might involve van der Waals forces, dipole bonding forces, and hydrogen bonding (<30 kJ/mol). The evaluated thermodynamic functions, including enthalpy, internal energy, and entropy, validate the exothermic and spontaneous behaviours of the methylene blue and Congo red uptake processes by PANI/ZA.

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Electrospun polyacrylonitrile-Moringa Olifera based nanofibrous bio-sorbent for remediation of Congo red dye

Cited by 13 publications

References 33 publications

A Comprehensive Review of Moringa oleifera Bioactive Compounds—Cytotoxicity Evaluation and Their Encapsulation

A Comprehensive Review of Moringa oleifera Bioactive Compounds—Cytotoxicity Evaluation and Their Encapsulation

Steric, Synergetic, Energetic Studies on the Impact of the Type of the Hybridized Polymers (Chitosan and β-Cyclodextrin) on the Adsorption Properties of Zeolite-A for Congo Red Dye

Steric and Energetic Studies on the Synergetic Enhancement Effect of Integrated Polyaniline on the Adsorption Properties of Toxic Basic and Acidic Dyes by Polyaniline/Zeolite-A Composite

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