A macroscopic study of the retention capacity of copper b polyaniline coated onto silica gel and natural solid materials

Belaiba, F.; Méniai, Abdeslam-Hassen; Bencheikh-Lehocine, M.; Mansri, A.; Morcellet, Michel; Bacquet, Maryse

doi:10.1016/j.desal.2004.06.092

Cited by 15 publications

(11 citation statements)

References 3 publications

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“…First, the amino and imino groups in the concentrated acid possess the sustained deoxidizing ability, 49 leading to some toxic Cr(VI) ions being reduced to a lower oxidation state nontoxic Cr(III). Too low a pH value is not favorable to the cation sorption, 50,51 because Cr(III) ions existing in the positively charged form cannot compete with so many H + . Second, during the titration process, no color change was observed after adding the indicator into the natural filtrate, indicating the very low Cr(VI) concentration.…”

Section: Chromium(vi) Sorptionmentioning

confidence: 99%

Synthesis and strong heavy-metal ion sorption of copolymer microparticles from phenylenediamine and its sulfonate

Huang

2012

J. Mater. Chem.

123

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Section: Chromium(vi) Sorptionmentioning

confidence: 99%

Synthesis and strong heavy-metal ion sorption of copolymer microparticles from phenylenediamine and its sulfonate

Huang

2012

J. Mater. Chem.

123

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“…S9c, † saturation was reached in about 10 min and the maximum adsorption was about 0.10 mmol g –1 (details can be found in the ESI † ). Although the maximum adsorption of ACAT–vitrimer was lower than that of the reported polyaniline, 59 , 61 it still shows that ACAT–vitrimer can efficiently remove heavy metal ions from solutions. Moreover, it should be pointed out that, like polyaniline can absorb various metal ions, 60 – 66 the metal ion absorption of ACAT–vitrimer is not limited to copper ions.…”

Section: Resultsmentioning

confidence: 68%

“…The ability of polyaniline to absorb heavy metal ions has been reported, which is due to the coordination interaction between amino groups of polyaniline and metal ions. 59 , 60 For polymers containing oligoanilines, such a property was ignored in the past. The ACAT–vitrimer we report here also demonstrates the ability to extract heavy metal ions from solutions because of the amino and hydroxyl groups in the material.…”

Section: Resultsmentioning

confidence: 99%

Multi-stimuli responsive and multi-functional oligoaniline-modified vitrimers

et al. 2017

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“…The flux decline with respect to time as shown in Fig.11 indicates that at initial stages of treating textile effluent for CA/ZVI-1 The adsorptive property of ZVI nanoparticles has caused the reduction in retentate concentration which has been supported by the earlier works 42,43 . The flux decline with respect to time as shown in Fig.11 indicates that at initial stages of treating textile effluent for CA/ZVI-1 The adsorptive property of ZVI nanoparticles has caused the reduction in retentate concentration which has been supported by the earlier works 42,43 .…”

Section: Treatment Of Textile Industry Effluentmentioning

confidence: 58%

Zero-valent iron impregnated cellulose acetate mixed matrix membranes for the treatment of textile industry effluent

et al. 2015

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Novel green synthesized zero valent iron (ZVI) nanoparticles of distinct mass fractions of 0.5, 1.5 and 2.5 wt. % are blended with cellulose acetate (CA) to prepare CA/ZVI mixed matrix membranes (MMMs). The thermal stability and roughness have been improved upon increasing the mass fraction of ZVI in CA. The morphology of prepared CA/ZVI membranes has been studied using transmission scanning electron microscopy (TEM). Pure water permeability (PWP) is increased while adding 0.5 wt. % of ZVI nanoparticles. When 2.5 wt. % is added, PWP decreased due to aggregation of ZVI nanoparticles in CA polymer matrix. The adsorption capacity of ZVI nanoparticles on CA/ZVI membrane during polymer enhanced ultrafiltration of textile effluent is also investigated. The equilibrium adsorption isotherms are well fitted with Freundlich model implying the influence of active adsorptive sites of ZVI nanoparticles.Recent trends in membrane separation involve mixed matrix membranes (MMMs) as they offer plethora of advantages such as higher removal efficiency and flow rate, excellent selectivity, reusability, superior kinetics and leaves smaller footprint 2, 3 . The unique physico-chemical, mechanical and functional properties of inorganic metal nanomaterials will be combined with the easy processibility of organic polymeric membrane for synthesizing MMMs 4 . Hence, blending of such metal nanoparticles enable to develop MMMs having (i) enhanced removal efficiency of the pollutants in the wastewater stream by means of adsorption and catalytic reaction, (ii) thermal stability for operating at very high temperatures 5-7 . Since the discovery of asymmetric membranes by Leob and Sourirajan 8 , cellulose acetate (CA) has been considered as an important polymeric material for its higher hydrophilicity and easy processibility. However, CA membrane having excessive fouling, lower pH and thermal stability, lesser reproducibility and so on 9, 10 necessitates modification for better performance. For modification of CA, both bulk and surface modification approaches such as blending, grafting, surface coating have been so far reported [11][12][13] . As the success of MMMs mostly depend on the control of interfacial defects between polymeric matrix and inorganic modifiers 14 , the choice of modifiers play an important role in novel MMMs synthesis.Zero valent iron (ZVI) nanoparticles, due to their high surface reactivity and smaller size 15 can transform complex pollutants such as polychlorinated biphenyls (PCBs),

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A macroscopic study of the retention capacity of copper b polyaniline coated onto silica gel and natural solid materials

Cited by 15 publications

References 3 publications

Synthesis and strong heavy-metal ion sorption of copolymer microparticles from phenylenediamine and its sulfonate

Synthesis and strong heavy-metal ion sorption of copolymer microparticles from phenylenediamine and its sulfonate

Multi-stimuli responsive and multi-functional oligoaniline-modified vitrimers

Zero-valent iron impregnated cellulose acetate mixed matrix membranes for the treatment of textile industry effluent

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