Electrospun polyindole nanofibers as a nano-adsorbent for heavy metal ions adsorption for wastewater treatment

Cai, Zengxuan; Song, Xi‐Ming; Zhang, Qing; Zhai, Tingting

doi:10.1007/s12221-017-6988-z

Cited by 43 publications

(33 citation statements)

References 57 publications

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“…It was observed that a high adsorption efficiency is likely at low initial concentration for nanopolymer composite adsorbents. Cai et al [114] explains the reason to be the difference in the concentration gradient between Cu 2+ in the initial solution and its absence on the nano-adsorbent which is acting as a driving force, till all the active sorption places are taken, while adsorption process is efficient at high initial concentration of the adsorbate for polymer adsorbents. An increase in the adsorbent mass (optimum being 0.5 g) increases the number of active adsorption sites and adsorption capacity [123].…”

Section: Resultsmentioning

confidence: 99%

“…Cai et al [114] explain that precipitation of Cu (II) occurs in form of Cu(OH) 2 due to the increasing concentration of OH − ions resulting to the creation of anionic complexes of hydroxide that the maximum adsorption capacity is at 6 and the adsorption decreases by raising or lowering the pH [125]. Therefore, the concentration of the metal ions that dissolved and their adsorption on the active sites would decrease.…”

Section: Resultsmentioning

confidence: 99%

“…The existence of these cations results in high ionic strength, which invariably affects the adsorption behaviour. The effect of ionic strength on copper adsorption with these nanopolymer adsorbents were studied using salts such as NaCl, KCl, MgCl 2 , and CaCl 2 in aqueous solution at ionic medium ranging from 0.01 and 0.1mol/L [114,131].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Selective Conditions on Various Composite Sorbents for Enhanced Removal of Copper (II) Ions from Aqueous Environments

Adeeyo

Edokpayi

Bello

et al. 2019

IJERPH

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Numerous pollutants, including dyes, heavy metals, pesticides, and microorganisms, are found in wastewater and have great consequences when discharged onto natural freshwater sources. Heavy metals are predominantly reported in wastewater. Heavy metals are persistent, non-biodegradable and toxic, transforming from a less toxic form to more toxic forms in environmental media under favourable conditions. Among heavy metals, copper is dominantly found in wastewater effluent. In this review, the effects of high concentration of copper in plants and living tissues of both aquatic animals and humans are identified. The performance of different polymer adsorbents and the established optimum conditions to assess the resultant remediation effect as well as the amount of copper removed are presented. This procedure allows the establishment of a valid conclusion of reduced time and improved Cu (II) ion removal in association with recent nano-polymer adsorbents. Nano-polymer composites are therefore seen as good candidates for remediation of Cu ions while pH range 5–6 and room temperature were mostly reported for optimum performance. The optimum conditions reported can be applied for other metal remediation and development of potent novel adsorbents and process conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Selective Conditions on Various Composite Sorbents for Enhanced Removal of Copper (II) Ions from Aqueous Environments

Adeeyo

Edokpayi

Bello

et al. 2019

IJERPH

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“…Several chemical and mechanical factors contribute to the local pathophysiological pathways for the treatment of burn wounds. 25 Fast inflammation contributes to cytokines and free radicals aggregation together with a neutrophil plugging in dermal venules. Enhancing vascular permeability and changes in hydrostatic interstitial tension contribute to edema with vascular obstruction.…”

Section: Burn Wound Healing Progressionmentioning

confidence: 99%

Localized Delivery of Drugs through Medical Textiles for Treatment of Burns: A Perspective Approach

Tiwari¹,

Tiwari²,

Lahiri³

et al. 2020

Adv Pharm Bull

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The topical delivery offers numerous benefits, such as the ability to deliver drugs specifically on site selectively, prevents fluctuations in the levels of the drug, improved compliance, and improved self-medication capacity. Skin is the main route of the administration of the drug delivery system (DDS) and burns mainly cause skin damage. A burn is a kind of damage caused to skin and tissues by fire, ice, electrical energy, pollutants, friction, and radiation. There are three different types of burns, including superficial epidermis burns, partial-thickness dermis that stretch to the papillary and reticular dermis, and full-thickness burns that cover the dermis whole. The objective of the present review article is to focus on fabrication techniques of medical textiles, different types of polymers used for designing medicated textiles, skin burn conditions, and application of medicated textiles for treatment of burn along with other applications. Cream, ointment, and gel are the dosage forms used in burns. Intravenous fluids, wound care, assorted antibiotics, surgical and alternative medicines, burned creams and salami, dressings can be used to treat wounds. Nanofibers are nanometer-specific fibers that encapsulate drugs inside them and cure wounds. Nanofibers have all the properties that speed up wound healing. The properties are mechanical integrity, proper timing of wound addiction, temperature homeostasis facilitation and gas exchange, absorption of exudates. The nanofibers have been used in burn care and have been highly efficient and non-toxic.

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“…The adaptation of nanotechnology to process engineering for the improvement of water quality using nanosorbents, nanocatalysts [ 5 , 6 ], nanoparticles [ 7 , 8 , 9 , 10 ], and nanostructured membranes [ 11 , 12 , 13 ] among other nanotechnology-based products has demonstrated applicability for these alternatives in water treatment. Nanoadsorbents, such as nanobeads, nanocomposites [ 14 , 15 , 16 , 17 ], magnetic nano-adsorbents [ 18 , 19 , 20 ], and nanofiber matrices [ 21 , 22 , 23 , 24 , 25 , 26 ], are applicable in the detection and removal of various pollutants.…”

Section: Introductionmentioning

confidence: 99%

Aminated Polyethylene Terephthalate (PET) Nanofibers for the Selective Removal of Pb(II) from Polluted Water

et al. 2017

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Electrospun nanofibers have been successfully applied to remove toxic and carcinogenic contaminants such as heavy metals from polluted water. In this study, an efficient adsorbent based on poly(ethylene terephthalate) (PET) nanofibers was developed following a cheap, versatile and scalable process. PET nanofibers were first produced by electrospinning, and their surface was chemically functionalized using a simple aminolysis process. The capacity of the resulting material to adsorb Pb(II) from synthetic solutions was evaluated as a function of the contact time, pH, and initial metal ion concentration. The adsorbent system presented a quick kinetic adsorption, reaching an extremely high maximum adsorption capacity of about 50 millimol (mmol) of Pb(II) per gram of adsorbent system after just 30 min. Moreover, the effect of competing metal ions, such as Ni(II), Cd(II) and Cu(II), was studied at different molar ratios. Finally, when tested in continuous flow mode, aminated PET (APET) nanofibers were able to remove 97% of Pb(II) ions in solution, demonstrating their potential for the remediation of heavy metal-contaminated water.

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Electrospun polyindole nanofibers as a nano-adsorbent for heavy metal ions adsorption for wastewater treatment

Cited by 43 publications

References 57 publications

Influence of Selective Conditions on Various Composite Sorbents for Enhanced Removal of Copper (II) Ions from Aqueous Environments

Influence of Selective Conditions on Various Composite Sorbents for Enhanced Removal of Copper (II) Ions from Aqueous Environments

Localized Delivery of Drugs through Medical Textiles for Treatment of Burns: A Perspective Approach

Aminated Polyethylene Terephthalate (PET) Nanofibers for the Selective Removal of Pb(II) from Polluted Water

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