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首页> 外文期刊>Plasma Science & Technology >Degradation of phenol using a combination of granular activated carbon adsorption and bipolar pulse dielectric barrier discharge plasma regeneration
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Degradation of phenol using a combination of granular activated carbon adsorption and bipolar pulse dielectric barrier discharge plasma regeneration

机译：使用粒状活性炭吸附和双极脉冲介电阻挡放电等离子体再生的组合的苯酚降解

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摘要

A combined method of granular activated carbon (GAC) adsorption and bipolar pulse dielectric barrier discharge (DBD) plasma regeneration was employed to degrade phenol in water. After being saturated with phenol, the GAC was filled into the DBD reactor driven by bipolar pulse power for regeneration under various operating parameters. The results showed that different peak voltages, air flow rates, and GAC content can affect phenol decomposition and its major degradation intermediates, such as catechol, hydroquinone, and benzoquinone. The higher voltage and air support were conducive to the removal of phenol, and the proper water moisture of the GAC was 20%. The amount of H2O2 on the GAC was quantitatively determined, and its laws of production were similar to phenol elimination. Under the optimized conditions, the elimination of phenol on the GAC was confirmed by Fourier transform infrared spectroscopy, and the total removal of organic carbons achieved 50.4%. Also, a possible degradation mechanism was proposed based on the HPLC analysis. Meanwhile, the regeneration efficiency of the GAC was improved with the discharge treatment time, which attained 88.5% after 100 min of DBD processing.
机译：使用粒状活性炭（GAC）吸附和双极脉冲介质阻挡放电（DBD）血浆再生的组合方法在水中降解苯酚。用苯酚饱和后，将GAC填充到由双极脉冲功率驱动的DBD反应器中，在各种操作参数下再生。结果表明，不同的峰值电压，空气流速和GAC含量可以影响苯酚分解及其主要的降解中间体，例如儿茶酚，氢醌和苯醌。较高的电压和空气支撑有利于去除苯酚，并且GAC的适当水分为20％。定量确定GAC上的H 2 O 2的量，其生产规律与苯酚消除相似。在优化条件下，通过傅里叶变换红外光谱证实了GAC上的消除苯酚，并且总碳的总除去达到50.4％。此外，基于HPLC分析提出了一种可能的降解机制。同时，通过放电处理时间改善了GAC的再生效率，在100分钟的DBD加工后达到了88.5％。

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