Document
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Synthesis of α-cellulose/polypyrrole composite for the removal of reactive red dye from aqueous solution: Kinetics and equilibrium modeling
type: Document
date time value: article date 4048
type: Entity
most specific type: Article
page start: 312
freetext keyword: Cellulose; Curve fitting; Cyclic voltammetry; Fourier transform infrared spectroscopy; pH; Polypyrroles; Potassium compounds; Scanning electron microscopy; Ultraviolet visible spectroscopy; Adsorption capacities; Adsorption experiment; Adsorption rate coefficients; Effective diffusivities; Equilibrium concentration; In-situ polymerization; Potassium persulfate; Synthesized materials; Adsorption
has publication venue: Polymer Composites
origen: scopus
type: Article
most specific type: Document
type: Thing
doi: 10.1002/pc.22945
related by: authorship_23816
e iscopus: 2-s2.0-84926216339
related by: authorship_23817
estado: published
abstract: In this work, a composite from α-cellulose coated with conducting polypyrrole by in situ polymerization using potassium persulfate as oxidant was obtained. The composite was characterized by fourier transform infrared (FTIR) spectroscopy, cyclic voltammetry, UV/Vis spectroscopy, and scanning electron microscopy (SEM) analysis showed homogeneous coating of α-cellulose with polypyrrole (PPy) to produce a composite with a conductivity of 3.5 × 10-5 S/m. Batch aqueous adsorption experiments of the reactive red 120 (RR120) dye onto the synthesized material were conducted. The results showed that this composite is an efficient adsorbent for RR120 dye removal. For the adsorption experiments set to an initial pH of 3.9, the adsorption capacity was 15.6 mg of dye/g of composite for an equilibrium concentration (in the liquid) of RR120 dye equal to 1,000 mg/L, whereas a value of 96.1 mg of dye/g of composite was obtained when the solution pH was set to 2.0 for the same equilibrium concentration. When performing adsorption experiments using pure α-cellulose, dye adsorption was insignificant at any pH value. Adsorption isotherm for RR120 was described by a typical Freundlich model. The transient adsorption of RR120 on the synthesized composite was described by a general three-resistance model that includes the transport on the film that surrounds the composite particles, diffusion inside the particles, and adsorption on the surface of the particles. A fitting of the uptake curves was performed allowing the estimation of values for the effective diffusivity, D0, and the adsorption rate coefficient, k1. For the adsorption experiments with an initial pH value set to 3.9, D0 was estimated as 1.05 × 10210 m2/s, whereas k1 was 1.65 × 1024 Ln/g mgn-1 s; the corresponding values of k1 at pH 52 and 9.0 were 3.18 × 1024 and 5.16 × 10-5, respectively. © 2014 Society of Plastics Engineers.
related by: authorship_23820
related by: authorship_23818
crisid: 4048
type: Information Content Entity
type: Generically Dependent Continuant
related by: authorship_23819
volume: 36
type: Continuant
issue: 2
page end: 321

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date: 2026-08-27T12:49:41
publisher: vivo
type: Document
label: RDF description of Synthesis of α-cellulose/polypyrrole composite for the removal of reactive red dye from aqueous solution: Kinetics and equilibrium modeling - http://orbis.uaslp.mx/vivo/individual/scopus4047

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Polymer Composites
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publication venue for: Synthesis of α-cellulose/polypyrrole composite for the removal of reactive red dye from aqueous solution: Kinetics and equilibrium modeling
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type: Periodical