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• W3196330578 endingPage "132164" @default.
• W3196330578 startingPage "132164" @default.
• W3196330578 abstract "Synthetic dyes are among the common pollutants in the ecosystem. In the present study, polypyrrole/zeolite (PPy/Ze) nanocomposite was prepared and subsequently assessed for the removal of Reactive blue (RB) and Reactive red (RR) from synthetic solution. The polymeric PPy/Ze composite was synthesized by chemical oxidation of pyrrole in the presence of zeolite. Electron microscopic images (transmission and scanning) indicate that PPy/Ze nanocomposite was spherical in shape with an average size of 40–80 nm. The characteristic pyrrole and zeolite Fourier transform infrared spectrum peaks (1542 cm−1, 1463 cm−1, 1156 cm−1, 1054 cm−1, 879 cm−1 and 756 cm−1) in the nanocomposite confirmed zeolite integration with polypyrrole. Experimental variables such as PPy/Ze nanocomposite dose, initial RB and RR concentration, reaction temperature and pH were optimized. The PPy/Ze nanocomposite adsorbed 86.2% of RB and 88.3% of RR from synthetic solution at optimal conditions (pH 9, initial RR or RB concentration, 75 mg/l; PPy/Ze dose, 1.8 g/l; and temperature, 50 °C). Freundlich isotherm model and pseudo-second-order kinetics showed better fit for both RB and RR removal from synthetic solution. X-ray diffractogram confirmed the amorphous nature of PPy/Ze nanocomposite and that it was not altered even after dye adsorption. Adsorption–desorption studies showed that the composite has satisfactory adsorption potential for four cycles. The results show that the PPy/Ze nanocomposite could be used for the removal of dyes from wastewaters." @default.
• W3196330578 created "2021-09-13" @default.
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• W3196330578 date "2022-01-01" @default.
• W3196330578 modified "2023-10-17" @default.
• W3196330578 title "Polypyrrole/zeolite composite – A nanoadsorbent for reactive dyes removal from synthetic solution" @default.
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• W3196330578 doi "https://doi.org/10.1016/j.chemosphere.2021.132164" @default.
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