Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, City Dakhla, B.P. 8106, Agadir, Morocco.
Physical Chemistry and Environment Team, Faculty of Science, Ibn Zohr University, Agadir, Morocco.
Environ Sci Pollut Res Int. 2020 May;27(13):15245-15258. doi: 10.1007/s11356-020-08039-1. Epub 2020 Feb 18.
A novel polyaniline@Almond shell (PANI@AS) biocomposite was synthesized via facile in situ chemical polymerization method. The as-synthesized adsorbent was characterized using various analytical techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), and potentiometric titration. A batch adsorption system was applied with the aim of investigating as-synthesized adsorbent ability to remove Cr(VI) ions and Orange G (OG) textile dye from aqueous solutions. Obtained results revealed that adsorption process was strongly depended upon the physicochemical parameters. The adsorption of Cr(VI) and OG dye onto PANI@AS was better described by the pseudo second-order-kinetic model and followed the Freundlich isotherm model. The maximum uptakes were 335.25 for Cr(VI) and 190.98 mg g for OG dye. We further evaluated that PANI@AS biocomposite could be regenerated easily with NaOH solution and efficiently reused for Cr(VI) and OG dye removal from aqueous media. Thus, these results indicated the potential practical application of PANI@AS biocomposite for wastewater treatment.
一种新型的聚苯胺@杏仁壳（PANI@AS）生物复合材料通过简便的原位化学聚合方法合成。采用傅里叶变换红外光谱（FTIR）、X 射线能量色散光谱（EDS）、扫描电子显微镜（SEM）和电位滴定等多种分析技术对合成的吸附剂进行了表征。采用间歇吸附系统，旨在研究合成的吸附剂去除水溶液中六价铬离子和橙色 G（OG）纺织染料的能力。研究结果表明，吸附过程强烈依赖于物理化学参数。Cr(VI)和 OG 染料在 PANI@AS 上的吸附更符合准二级动力学模型，并遵循 Freundlich 等温吸附模型。最大吸附量分别为 335.25 mg/g 用于 Cr(VI)和 190.98 mg/g 用于 OG 染料。我们进一步评估表明，PANI@AS 生物复合材料可以用 NaOH 溶液轻松再生，并可有效地用于从水介质中去除 Cr(VI)和 OG 染料。因此，这些结果表明 PANI@AS 生物复合材料在废水处理方面具有潜在的实际应用。
