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Data on the alizarin red S adsorption from aqueous solutions on PAC, treated PAC, and PAC/γ≈Fe₂O₃.

ABSTRACT: Three types of adsorbents of powdered activated carbon (PAC), treated PAC, and PAC/γ ≈ Fe₂O₃ nanocomposite were used. The adsorption experiments were performed in batch conditions. pH_ZPC of PAC/γ ≈ Fe₂O₃ was 6.7. As a result, at lower than pH_ZPC, acidic pH, the adsorption of alizarin red S on PAC/γ ≈ Fe₂O₃ was favourable. The maximum of alizarin red S adsorption of PAC, treated PAC, and PAC/γ ≈ Fe₂O₃ was 24.5 mg/g, 57.8 mg/g, and 112.56 mg/g, respectively. The models of Langmuir and pseudo-first-order were a fit model to describe the adsorption isotherm and the Kinetic, respectively. The PAC/γ ≈ Fe₂O₃ is a promising class of the adsorbents in the adsorption of various dyes from textile effluents.

SUBMITTER: Kamarehie B

PROVIDER: S-EPMC6138986 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Data on the bisphenol A adsorption from aqueous solutions on PAC and MgO~PAC crystals.

Project description:The compounds of endocrine disrupting are one of the important pollutants in the environment. These pollutants, even at extremely low concentrations, have significant effects on humans, animals and the environment. The main goal of this work was to study the performance activated carbon coated with MgO in the bisphenol A adsorption from aqueous solutions. The leading variables investigated were initial concentration of bisphenol A (20-100 mg/L), PAC and MgO~PAC (2-6 g), contact time (10-60 min), and pH (3-11). The residue concentration of bisphenol A was measured by temperature High-Performance Liquid Chromatography. The maximum adsorption of bisphenol A over PAC and MgO~PAC crystals was 9.2 mg/g and 22.28 mg/g, respectively. Based on BET, the surface area of PAC and MgO~PAC crystals were found to be 450.3 m2/g and 378.21 m2/g, respectively. By increasing initial concentration of bisphenol A, the adsorption decreased. The study findings showed that the Langmuir model and the pseudo-second-order model were a fit model to the experimental data, respectively.

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