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首页> 外文期刊>Separation and Purification Technology >Sonocatalytic degradation of bisphenol A and 17α-ethinyl estradiol in the presence of stainless steel wire mesh catalyst in aqueous solution
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Sonocatalytic degradation of bisphenol A and 17α-ethinyl estradiol in the presence of stainless steel wire mesh catalyst in aqueous solution

机译：不锈钢丝网催化剂在水溶液中声催化降解双酚A和17α-乙炔雌二醇

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摘要

This study explores the sonochemical reactivity and the degradation of bisphenol A (BPA) and 17α-ethinyl estradiol (EE2) in a newly designed sonochemical reactor in the presence of a stainless steel wire mesh (SSWM), which acted as a catalyst, at a low frequency of 28 kHz with a contact time of 60 min. The sonochemical efficiency based on H2O2 production and the degradation of BPA and EE2 were determined as a function of the SSWM position, area, pore size, setting height, liquid height, and power. The degradation of BPA and EE2 due to H2O2 production was significantly higher when the SSWM was placed in a horizontal position than in a vertical position. The formation of H2O2 was found to be dependent on the SSWM setting height; the highest zero-order rate constant was obtained at a height of 3.6 cm from the bottom of the reactor. The sonochemical reactivity increases significantly in the presence of the SSWM, ranging from 18.5 μM when there is no addition of SSWM to 61.3 μM for a pore size of 1.0 mm. For a given SSWM pore size of 1.0 mm, the sonochemical reactivity and the degradation of BPA and EE2, as a function of the SSWM area, followed the order: 128 cm~2 > 192 cm~2 > 384 cm~2 > no addition.
机译：这项研究探索了在新设计的声化学反应器中，在充当催化剂的不锈钢丝网（SSWM）的存在下，在新设计的声化学反应器中声化学反应性和双酚A（BPA）和17α-乙炔基雌二醇（EE2）的降解。 28 kHz的低频，接触时间为60分钟。确定基于H2O2产生的声化学效率以及BPA和EE2的降解随SSWM位置，面积，孔径，设定高度，液体高度和功率的变化。当将SSWM放置在水平位置时，由于放置H2O2而导致的BPA和EE2的降解明显高于垂直位置。发现过氧化氢的形成取决于SSWM的设定高度。在距反应器底部3.6厘米的高度可获得最高的零级速率常数。在存在SSWM的情况下，声化学反应性显着提高，从不添加SSWM时的18.5μM到孔径为1.0 mm的61.3μM。在给定的SSWM孔径为1.0 mm的情况下，声化学反应性和BPA和EE2的降解随SSWM面积的变化而变化，顺序为：128 cm〜2> 192 cm〜2> 384 cm〜2>不添加。

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