Complete mineralization of propyzamide in aqueous solution containing TiO2 particles and H2O2 by the simultaneous irradiation of light and ultrasonic waves
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 TiO2 particles was irradiated by light. The photocatalytic d...
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| Veröffentlicht in: | Ultrasonics sonochemistry 2005-02, Vol.12 (3), p.197-203 |
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| creator | YANO, Jun MATSUURA, Jun-Ichi OHURA, Hiroki YAMASAKI, Sumio |
| description | 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 TiO2 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 TiO2 particles. The decomposition was further promoted by addition of H2O2 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 min, 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 H2O2 was first confirmed to achieve the complete mineralization of propyzamide. |
| doi_str_mv | 10.1016/j.ultsonch.2003.12.001 |
| format | Article |
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To decompose propyzamide, aqueous solutions containing propyzamide and TiO2 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 TiO2 particles. The decomposition was further promoted by addition of H2O2 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 min, the decomposed intermediate compounds still remained. In order to mineralize completely propyzamide, simultaneous irradiation by light and ultrasonic waves was carried out. 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To decompose propyzamide, aqueous solutions containing propyzamide and TiO2 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 TiO2 particles. The decomposition was further promoted by addition of H2O2 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 min, 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 H2O2 was first confirmed to achieve the complete mineralization of propyzamide.</description><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Photochemistry</subject><subject>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</subject><subject>Ultrasonic chemistry</subject><issn>1350-4177</issn><issn>1873-2828</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNpFkc9u1DAQxqOKipaWV6h8gVuC_ybOEa2AIlXqpZytieN0vXLs1HZA21fpy-LuLvQ0o9Hvm5lPX1XdENwQTNovu2Z1OQWvtw3FmDWENhiTs-qSyI7VVFL5rvRM4JqTrruoPqS0wwXsKX5fXRDBeyIlvaxeNmFenMkGzdabCM4-Q7bBozChJYZl_wyzHQ2yHsHTasKaUApuPSA6-AzWW_-IHuw9RQvEbLUzCYEf0S0to2GP8tagZOfyLviD3sYIo_1_xdnHbT4oChKheLIa_YHfJl1X5xO4ZD6e6lX16_u3h81tfXf_4-fm612tOWa5ngQTRlPZEi7oSMgw9XTsBi70wHEryhjMiGEYKAOJ8STB9LoH2mNDWk4mdlV9Pu4thovHlNVskzbOHR9WbUcF5bQvYHsEdQwpRTOpJdoZ4l4RrF5jUTv1Lxb1GosiVJVYivDmdGEdZjO-yU45FODTCYCkwU0RvLbpjeuEZJy27C_INpyk</recordid><startdate>20050201</startdate><enddate>20050201</enddate><creator>YANO, Jun</creator><creator>MATSUURA, Jun-Ichi</creator><creator>OHURA, Hiroki</creator><creator>YAMASAKI, Sumio</creator><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20050201</creationdate><title>Complete mineralization of propyzamide in aqueous solution containing TiO2 particles and H2O2 by the simultaneous irradiation of light and ultrasonic waves</title><author>YANO, Jun ; MATSUURA, Jun-Ichi ; OHURA, Hiroki ; YAMASAKI, Sumio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-f535ec2861452d11bf92d7b45cb4065614aed0abb23a800f8ae9c9a290e1641f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Photochemistry</topic><topic>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</topic><topic>Ultrasonic chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>YANO, Jun</creatorcontrib><creatorcontrib>MATSUURA, Jun-Ichi</creatorcontrib><creatorcontrib>OHURA, Hiroki</creatorcontrib><creatorcontrib>YAMASAKI, Sumio</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Ultrasonics sonochemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>YANO, Jun</au><au>MATSUURA, Jun-Ichi</au><au>OHURA, Hiroki</au><au>YAMASAKI, Sumio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Complete mineralization of propyzamide in aqueous solution containing TiO2 particles and H2O2 by the simultaneous irradiation of light and ultrasonic waves</atitle><jtitle>Ultrasonics sonochemistry</jtitle><addtitle>Ultrason Sonochem</addtitle><date>2005-02-01</date><risdate>2005</risdate><volume>12</volume><issue>3</issue><spage>197</spage><epage>203</epage><pages>197-203</pages><issn>1350-4177</issn><eissn>1873-2828</eissn><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. 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| issn | 1350-4177 1873-2828 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Chemistry Exact sciences and technology General and physical chemistry Photochemistry Physical chemistry of induced reactions (with radiations, particles and ultrasonics) Ultrasonic chemistry |
| title | Complete mineralization of propyzamide in aqueous solution containing TiO2 particles and H2O2 by the simultaneous irradiation of light and ultrasonic waves |
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