Electrochemical incineration of omeprazole in neutral aqueous medium using a platinum or boron-doped diamond anode: Degradation kinetics and oxidation products

Irradiation-assisted electrochemical processes for the removal of persistent organic pollutants from wastewater

“…Thus, it is necessary to find a suitable technology for the removal of POPs from waters and wastewaters. In this context, electrochemical oxidation presents desirable features for the treatment of POPs, such as high efficiency, robustness and environmental compatibility [3][4][5][6][7][8][9][10][11]. Furthermore, to improve the efficiency of this process, in which typically POPs concentrations are very low, scientific efforts have been focused on the combination of anodic oxidation with other processes such as oxidant production.…”

Study of degradation intermediates formed during electrochemical oxidation of pesticide residue 2,6-dichlorobenzamide (BAM) at boron doped diamond (BDD) and platinum–iridium anodes

“…One challenge is elucidating degradation pathways of parent organic pollutants and identifying oxidation intermediates with the aim of ensuring final discharge of an environmentally safe effluent. Generalization of the degradation pathways for different organic contaminants has despite of similarities proved to be challenging, and laboratory studies targeting the individual contaminants are typically needed (Boye et al, 2006;Comninellis et al, 2008;Cavalcanti et al, 2013).…”

Reduction in energy consumption of electrochemical pesticide degradation through combination with membrane filtration

“…This was far higher than what is found in most contaminated groundwater samples, but was used to avoid the need for solid phase extraction, which would decrease the precision of the results. The use of higher concentrations is standard in studies of electrochemical oxidation of pesticides [15,16,[29][30][31][32], and is based on the assumption that the kinetics is not influenced by the initial concentration. To be able to distinguish the effects of the increase in the ionic concentration and the increase in BAM concentration, BAM was spiked into the retentates after desired recovery was obtained.…”

“…On the other hand, this hypothesis would not explain why the BAM removal kinetics were stable even as the concentration of BAM decreased. This dependence of the rate of removal on the initial concentration was interesting, since most electrochemical oxidation studies reported in literature have been carried out at concentrations similar to the levels used in this study, under the assumption that kinetics may be extrapolated and apply to the much lower environmentally relevant concentrations [15,16,[29][30][31][32]. Based on these findings, it could seem either that the rate of removal might be higher at lower concentrations, or that a level exist above which the rate of removal decreases.…”