In the present study, Polyaniline–polyvinyl acetate composite (PANi/PVAc) was used to remove mercury from aqueous media. The PANi/PVAc was chemically synthesized and mercury adsorption experiment was done in batch mode. On this basis, the impact of different parameters, including contact time, solution pH, consumed absorbent amount and applied adsorption isotherms, were further examined. The amount of polyvinyl acetate used in the synthesis process played a crucial role, and the highest percentage of mercury removal was observed for the composites with 4 mg/L concentration of polyvinyl acetate. Moreover, optimal mercury removal (92.2%) occurred at pH 6 and contact time of 30 min. According to the results, adsorption of mercury by PANi/PVAc can fit the Langmuir isotherm better than Freundlich isotherm. The maximum adsorption capacity was calculated 76.92 (mg/g) for the PANi/PVAc composite. The used adsorbent can be reused for mercury efficient removal with 6% loss of its removal capacity after its regeneration. The study of the FTIR confirmed the formation of the composite and XRD pattern indicated that PANi/PVAc composite was amorphous and contained benzene rings. (PANi/PVAc) composite was used to remove mercury from aqueous media. The composite was chemically synthesized. The impacts of different parameters were further explored. The PANi/PVAc composite exhibited a satisfactory performance in removing mercury from aqueous media.

中文翻译：

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使用聚苯胺-聚醋酸乙烯酯复合材料去除水介质中的汞

在本研究中，聚苯胺-聚醋酸乙烯酯复合材料 (PANi/PVAc) 用于去除水介质中的汞。PANi/PVAc是化学合成的，汞吸附实验以分批模式进行。在此基础上，进一步研究了不同参数的影响，包括接触时间、溶液 pH 值、吸收剂消耗量和应用的吸附等温线。合成过程中聚乙酸乙烯酯的用量起着至关重要的作用，在聚乙酸乙烯酯浓度为 4 mg/L 的复合材料中观察到最高的除汞百分比。此外，最佳汞去除率 (92.2%) 在 pH 值为 6 和接触时间为 30 分钟时发生。结果表明，PANi/PVAc对汞的吸附比Freundlich等温线更符合Langmuir等温线。经计算，PANi/PVAc 复合材料的最大吸附容量为 76.92 (mg/g)。使用过的吸附剂可重新用于高效除汞，再生后其去除能力损失6%。FTIR 的研究证实了复合材料的形成，XRD 谱表明 PANi/PVAc 复合材料是无定形的并含有苯环。(PANi/PVAc) 复合材料用于从水性介质中去除汞。该复合材料是化学合成的。进一步探讨了不同参数的影响。PANi/PVAc 复合材料在去除水介质中的汞方面表现出令人满意的性能。FTIR 的研究证实了复合材料的形成，XRD 谱表明 PANi/PVAc 复合材料是无定形的并含有苯环。(PANi/PVAc) 复合材料用于从水性介质中去除汞。该复合材料是化学合成的。进一步探讨了不同参数的影响。PANi/PVAc 复合材料在去除水介质中的汞方面表现出令人满意的性能。FTIR 的研究证实了复合材料的形成，XRD 谱表明 PANi/PVAc 复合材料是无定形的并含有苯环。(PANi/PVAc) 复合材料用于从水性介质中去除汞。该复合材料是化学合成的。进一步探讨了不同参数的影响。PANi/PVAc 复合材料在去除水介质中的汞方面表现出令人满意的性能。