P6 Photodecomposition of propyzamide by the simultaneous irradiation of ultrasonic waves and the effects of H_2O_2(Enviromental Application)

Yoshino Kouji, Nishimura Akiko, Matsuura Jun-ichi, Yano Jun, Yamasaki Sumio

doi:10.20577/pamjss.12.0_72

Bibliographic Information

Other Title

P6 プロピザミド(農薬)の超音波併用光分解と過酸化水素の添加効果(環境的応用)

Abstract

Environmental problems arise from the pollution of ground water and soil by propyzamide 3,5-dichloro-N-(3-methyl-1-butyn-3-yl)benzamide, which is a popular herbicide. To decompose propyzamide aqueous solutions containing propyzamide and TiO_2 particles was irradiated by light. The photocatalytic decomposition was accelerated when the solution temperature and pH were high. The temperature dependence was due to the adsorption processes of propyzamide on the TiO_2 particles. The decomposition was further promoted by addition of H_2O_2 because of its effective electron-trapping and generated ・OH which was available to decompose propyzamide. Although no propyzamide was detected in the solution after the irradiation time of about 20 minutes, the decomposed intermediate compounds still remained. In order to mineralize completely propyzamide, simultaneous irradiation by light and ultrasonic waves was carried out. The hybrid effect of the irradiation by light and ultrasonic waves in conjunction with H_2O_2 was first confirmed to achieve the complete mineralization of propyzamide.

Journal

Proceedings of the Annual Meeting of the Japan Society of Sonochemistry

Proceedings of the Annual Meeting of the Japan Society of Sonochemistry 12 (0), 72-74, 2003

Japan Society of Sonochemistry

Keywords

Details 詳細情報について

CRID: 1390282681028042880

NII Article ID: 110009710224

DOI: 10.20577/pamjss.12.0_72

ISSN: 24241512

Text Lang: ja

Data Source

JaLC
CiNii Articles

Abstract License Flag: Disallowed

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