Facile synthesis and characterization of a novel 1,2,4,5-benzene tetracarboxylic acid doped polyaniline@zinc phosphate nanocomposite for highly efficient removal of hazardous hexavalent chromium ions from water

Hsini, Abdelghani; Naciri, Yassine; Benafqir, Mohamed; Ajmal, Zeeshan; Aarab, Nouh; Laabd, Mohamed; Navı́o, J.A.; Puga, F.; Boukherroub, Rabah; Bakiz, B.; Albourine, Abdallah

doi:10.1016/j.jcis.2020.10.036

Cited by 116 publications

(61 citation statements)

References 86 publications

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“…The first studied isotherm was the Freundlich model that suggested heterogeneous adsorption of contaminants over the surface of the adsorbent, and the adsorption was achieved via the construction of multilayers from the pollutant ions [ 47 ]. The Freundlich model can be represented by the equation q e = K F + C e N , where q e denotes the amount of uptake pollutants after equilibration (mg.g −1 ), C e denotes the rest concentrations (mg.L −1 ), and N and K F are the normal constants of the Freundlich model and related to the adsorption intensities and capacities, respectively.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Polymer-Based Magnetic Nanocomposite for Multi-Pollutants Removal from Water

et al. 2021

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A magnetic polymer-based nanocomposite was fabricated by the modification of an Fe3O4/SiO2 magnetic composite with polypyrrole (PPy) via co-precipitation polymerization to form PPy/Fe3O4/SiO2 for the removal of Congo red dye (CR) and hexavalent chromium Cr(VI) ions from water. The nanocomposite was characterized using various techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), vibration sample magnetometer, and thermogravimetric analysis (TGA). The results confirm the successful fabrication of the nanocomposite in the size of nanometers. The effect of different conditions such as the contact time, adsorbent dosage, solution pH, and initial concentration on the adsorption process was investigated. The adsorption isotherm suggested monolayer adsorption of both contaminants over the PPy/Fe3O4/SiO2 nanocomposite following a Langmuir isotherm, with maximum adsorption of 361 and 298 mg.g−1 for CR dye and Cr(VI), respectively. Furthermore, the effect of water type on the adsorption process was examined, indicating the applicability of the PPy/Fe3O4/SiO2 nanocomposite for real sample treatment. Interestingly, the reusability of the nanocomposite for the removal of the studied contaminants was investigated with good results even after six successive cycles. All results make this nanocomposite a promising material for water treatment.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Polymer-Based Magnetic Nanocomposite for Multi-Pollutants Removal from Water

et al. 2021

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“…Adsorption kinetic data were fitted employing pseudo-first and -second order models. The pseudo-first order kinetic model assumes that a solute ion is adsorbed on a surface site of the adsorbent [47,48]. The integrated form of the pseudo-first order kinetic rate equation is:…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…The pseudo-second order kinetic model postulates that solute adsorption occurs on two available surface sites of the adsorbent. The integrated form of the pseudo-second order kinetic rate equation is [47][48][49]:…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Sulfate Kinetics and Adsorption Studies on a Zeolite/Polyammonium Cation Composite for Environmental Remediation

et al. 2021

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Sulfide mineral mining produces highly sulfate-contaminated wastewater which needs to be treated before disposal. A composite material was made from natural zeolite (NZ) and Superfloc® SC-581, a polyammonium cationic polymer. The resulting modified zeolite (MZ) demonstrated improved capacity for sulfate abatement from wastewater compared to NZ. Above pH 4.0, MZ retained positive surface charge while NZ remained negative. The effect of the ionic strength on the adsorption process was evaluated. Sulfate adsorption capacity was assessed and revealed MZ to be superior to NZ in all cases. Adsorption kinetics reached equilibrium after 10–12 h, with MZ adsorption being twice that of NZ; data fitted a pseudo-second order kinetic model. Adsorption isotherms reflected the high capacity of MZ for sulfate adsorption with maximum of 3.1 mg g−1, while NZ only achieved 1.5 mg g−1. The process corresponds to heterogeneous partially reversible adsorption of ionic species over the solid adsorbent. Langmuir–Freundlich parameters revealed that adsorption over MZ corresponds to an interaction eight times stronger than that on NZ. The sulfate adsorption pattern changes with ionic strength. Taken together, the composite formed between natural zeolite and polyammonium represents an adsorbent that maintains the adsorption capacity of zeolite and proves suitable for anionic species removal. Further prospect considers the testing of the composite with other anionic pollutants (arsenate, phosphate, perchlorate, etc.)

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“…Various conventional techniques like adsorption using activated carbon, ultra‐filtration/reverse osmosis using various membranes, oxidation using biological agents, and so forth, have serious limitations 7–9 . The degradation products of most organic dyes are far more toxic than parent compounds demanding the urgent need for innovative technological solutions 10–14 . Photocatalytic/photoassisted degradation is considered as an acceptable alternative route for the removal of organic dyes and pesticides from water 15,16 and plethora of works are available in this relation 17,18 .…”

Section: Introductionmentioning

confidence: 99%

Photoassisted degradation of rhodamine B using poly(ε‐caprolactone) based nanocomposites: Mechanistic and kinetic features

Elias

Sarathchandran

Joseph

et al. 2021

J of Applied Polymer Sci

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The efficiency of poly (ε‐caprolactone)‐cloisite 10A nanocomposite membrane in removing/degrading of an amphoteric dye (rhodamine B) from aqueous samples under visible light is investigated in detail. Nanocomposite membranes were prepared by electrospinning technique using acetone‐chloroform mixture as solvent. The synthesized nanocomposites were used to degrade rhodamine B from aqueous samples under visible light conditions using a 50 W light‐emitting diode lamb. Samples were withdrawn at definite intervals of 30 min and analyzed using UV–vis spectroscopy, LC‐Q‐ToF/MS‐MS, and antibacterial studies. Detailed chemistry of the rhodamine B degradation is reported by interpreting experimental results and using first‐principles density functional theory calculations. Cytotoxicity tests confirm the eco‐friendly nature of end product obtained. Nanocomposite with 9 wt% of cloisite 10A, effectively converts rhodamine B to eco‐friendly products within almost 3 h. To the best of our knowledge, no work has been reported on the use of poly(ε‐caprolactone)‐cloisite 10A nanocomposites for dye removal from water samples.

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Facile synthesis and characterization of a novel 1,2,4,5-benzene tetracarboxylic acid doped polyaniline@zinc phosphate nanocomposite for highly efficient removal of hazardous hexavalent chromium ions from water

Cited by 116 publications

References 86 publications

Synthesis of Polymer-Based Magnetic Nanocomposite for Multi-Pollutants Removal from Water

Synthesis of Polymer-Based Magnetic Nanocomposite for Multi-Pollutants Removal from Water

Sulfate Kinetics and Adsorption Studies on a Zeolite/Polyammonium Cation Composite for Environmental Remediation

Photoassisted degradation of rhodamine B using poly(ε‐caprolactone) based nanocomposites: Mechanistic and kinetic features

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