In:
Journal of the Mexican Chemical Society, Sociedad Quimica de Mexico, A.C., Vol. 62, No. 2 ( 2018-06-06)
Abstract:
〈 p 〉 Nowadays, the increasing pollution of natural water effluents with herbicides, such as atrazine (ATZ, 2-chloro-4-ethylamino-6-isopropylamino-s-triazine), is an emerging problem that has not received the sufficient attention. This work presents a study on ATZ degradation under an electrochemical advanced oxidation process (EAOP), such as anodic oxidation (AO). The degradation of 175 mL of 10 and 40 mg L 〈 sup 〉 -1 〈 /sup 〉 ATZ solutions was studied using Pt or BDD as anode. The assays were made with a stirred tank cell, using a supporting electrolyte of 0.050 mM of Na 〈 sub 〉 2 〈 /sub 〉 SO 〈 sub 〉 4 〈 /sub 〉 at pH 3.0 by applying 0.18, 0.27 and 0.37 A cm 〈 sup 〉 -2 〈 /sup 〉 . The degradation rate increased by increasing current density, regardless of the anode employed. Greater amounts of ATZ were removed at higher organic load. The pesticide decay always obeyed a pseudo-first-order kinetics. A high degradation efficiency of 97%-99% was obtained by the more powerful AO-BDD process at 0.37 A cm 〈 sup 〉 -2 〈 /sup 〉 . High performance liquid chromatography (HPLC) was used to follow the evolution of major oxidation products by AO-BDD, such as desethyl atrazine, desethyl desisopropyl atrazine and cyanuric acid. 〈 /p 〉
Type of Medium:
Online Resource
ISSN:
2594-0317
,
1870-249X
DOI:
10.29356/jmcs.v62i2.367
Language:
Unknown
Publisher:
Sociedad Quimica de Mexico, A.C.
Publication Date:
2018
detail.hit.zdb_id:
2210387-9
Permalink