{"id":1079,"date":"2017-12-06T09:04:37","date_gmt":"2017-12-06T09:04:37","guid":{"rendered":"http:\/\/www.ptfos.unios.hr\/novicjfst\/?p=1079"},"modified":"2017-12-06T09:08:20","modified_gmt":"2017-12-06T09:08:20","slug":"cjfst-2017-9-2-16","status":"publish","type":"post","link":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/2017\/12\/06\/cjfst-2017-9-2-16\/","title":{"rendered":"CJFST.2017.9.2.16"},"content":{"rendered":"

Photochemical degradation of alachlor in water<\/strong><\/p>\n

Tajana \u0110urki\u0107*, Jelena Molnar Jazi\u0107, Jasmina Agbaba, Marijana Kragulj Isakovski,
\nAleksandra Tubi\u0107, Sne\u017eana Maleti\u0107, B. Dalmacija<\/strong><\/p>\n

\u00a0<\/sup>University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovi\u0107a 3, 21000 Novi Sad, R. Serbia<\/em><\/p>\n

original scientific paper
\n<\/em>DOI: 10.17508\/CJFST.2017.9.2.16<\/p>\n

Summary<\/strong><\/p>\n

This study investigates the photochemical degradation of alachlor, a chloroacetanilide herbicide. All experiments were conducted in ultra-pure deionized water (ASTM Type I quality) using direct ultraviolet (UV) photolysis and the UV\/H2<\/sub>O2<\/sub> advanced oxidation process. The direct UV photolysis and UV\/H2<\/sub>O2<\/sub> experiments were conducted in a commercial photochemical reactor with a quartz reaction vessel equipped with a 253.7 nm UV low pressure mercury lamp (Philips TUV 16 W). The experimental results demonstrate that UV photolysis was very effective for alachlor degradation (up to 97% removal using a high UV fluence of 4200 mJ\/cm2<\/sup>). The UV\/H2<\/sub>O2<\/sub> process promoted alachlor degradation compared to UV photolysis alone, with a high degree of decomposition (97%) achieved at a significantly lower UV fluence of 600 mJ\/cm2<\/sup> when combined with 1 mg H2<\/sub>O2<\/sub>\/L. The application of UV photolysis alone with a UV fluence of 600 mJ\/cm2<\/sup> gave a negligible 4% alachlor degradation. The photo degradation of alachlor, in both direct UV photolysis and the UV\/H2<\/sub>O2<\/sub> process, followed pseudo first-order kinetics. The degradation rate constant was about 6 times higher for the UV\/H2<\/sub>O2<\/sub> process than for UV photolysis alone.<\/p>\n

Keywords<\/em>: degradation, alachlor, direct UV photolysis, UV\/H2O2 process<\/p>\n","protected":false},"excerpt":{"rendered":"

Photochemical degradation of alachlor in water Tajana \u0110urki\u0107*, Jelena Molnar Jazi\u0107, Jasmina Agbaba, Marijana Kragulj Isakovski, Aleksandra Tubi\u0107, Sne\u017eana Maleti\u0107, B. Dalmacija \u00a0University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg Dositeja Obradovi\u0107a 3, 21000 Novi Sad, R. Serbia original scientific paper DOI: 10.17508\/CJFST.2017.9.2.16 Summary This study investigates the … Op\u0161irnije<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1079","post","type-post","status-publish","format-standard","hentry","category-nekategorizirano"],"_links":{"self":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/1079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/comments?post=1079"}],"version-history":[{"count":1,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/1079\/revisions"}],"predecessor-version":[{"id":1080,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/1079\/revisions\/1080"}],"wp:attachment":[{"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/media?parent=1079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/categories?post=1079"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/tags?post=1079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}