Abstract：
:This study investigated the electrochemical incineration of nitrilotriacetic acid (NTA) at boron-doped diamond (BDD) and platinum (Pt) anodes. Trials were performed in the presence of sulfate electrolyte media under recirculation mode. The parameters that influence the degradation efficiency were investigated, including applied current density, flow rate, supporting electrolyte concentration and reaction time. To reduce the number of experiments, the system had been managed under chemometric technique named Doehlert matrix. As a consequence, the mineralization of NTA demonstrated similar behavior upon operating parameters on these two anodes. Further kinetic study indicated that the degradations followed pseudo-first-order reactions for both BDD and Pt anodes, and the reaction rate constant of the former was found to be higher than that of the latter. Such difference could be interpreted by results from fractal analysis. In addition, a reaction sequence for NTA mineralization considering all the detected intermediates was also proposed.
journal_name
Chemospherejournal_title
Chemosphereauthors
Zhang C,He Z,Wu J,Fu Ddoi
10.1016/j.chemosphere.2015.02.018subject
Has Abstractpub_date
2015-07-01 00:00:00pages
1-7eissn
0045-6535issn
1879-1298pii
S0045-6535(15)00120-4journal_volume
130pub_type
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