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A comprehensive study on the electrochemical advanced oxidation of antihypertensive captopril in different cells and aqueous matrices
Applied Catalysis B: Environment and Energy ( IF 20.2 ) Pub Date : 2020-06-17 , DOI: 10.1016/j.apcatb.2020.119240
Alexsandro J. dos Santos , Pere L. Cabot , Enric Brillas , Ignasi Sirés

Anodic oxidation with electrogenerated H2O2 (AO-H2O2) was applied to treat 130 mL of antihypertensive drug captopril in sulfate medium, urban wastewater and synthetic urine using a BDD, Pt or IrO2 anode and an air-diffusion cathode. Oxidants were OH formed during O2 evolution and active chlorine formed via anodic oxidation of Cl. Drug removal decreased as: BDD > Pt > IrO2. The effect of pH and current density was examined. Further, 2.5 L of drug solutions in the same matrices with Fe2+ at pH 3.0 were treated by solar photoelectro-Fenton (SPEF) using a solar pre-pilot flow plant with a Pt/air-diffusion cell and a planar photoreactor. In sulfate medium, SPEF outperformed AO-H2O2 and electro-Fenton because of the efficient Fe3+ photoreduction. Low mineralization was achieved by the small generation of photoactive Fe(III)-carboxylate complexes. In urban wastewater, captopril was more rapidly removed due to active chlorine. Two heterocyclic derivatives and four aliphatic acids were detected.



中文翻译:

降压卡托普利在不同细胞和水性基质中电化学高级氧化的综合研究

使用BDD,Pt或IrO 2阳极和空气扩散阴极,使用电生H 2 O 2(AO-H 2 O 2)进行阳极氧化,以处理130 mL硫酸盐介质,城市废水和合成尿中的降压药卡托普利。。氧化剂被期间öOH形成2演化和地通过Cl的阳极氧化形成的活性氯- 。药物去除降低为:BDD> Pt> IrO 2。检查了pH和电流密度的影响。此外,在相同基质中将2.5 L含Fe 2+的药物溶液使用带有Pt /空气扩散池和平面光反应器的太阳能预试流动装置,通过太阳能光电Fenton(SPEF)处理pH为3.0的溶液。在硫酸盐介质中,由于有效的Fe 3+光还原作用,SPEF的性能优于AO-H 2 O 2和电子Fenton 。通过少量光敏性Fe(III)-羧酸盐络合物的生成可以实现低矿化作用。在城市废水中,由于活性氯的存在,卡托普利的去除速度更快。检测到两个杂环衍生物和四个脂肪酸。

更新日期:2020-06-25
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