Tertiary treatment of a mixture of composting and landfill leachates using electrochemical processes

Benguit, Alae; Tiwari, Bhagyashree; Drogui, Patrick; Landry, Dany

doi:10.1016/j.chemosphere.2021.133379

Cited by 14 publications

(1 citation statement)

References 108 publications

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“…In the initial stage of degradation, • OH mainly attacks macromolecules, which are split into small molecules and completely oxidized to CO 2 in relatively small proportions initially. During progressive degradation, additional small molecules are completely oxidized (Benguit et al 2022), which increases the ΔCOD value and decreases the EC COD . However, under prolonged degradation, the growth rate of the degraded organic matter decreases, resulting in an increase in EC COD .…”

Section: Degradation Of Pesticide Wastewatermentioning

confidence: 99%

PbO2 modified BDD electrode by dicationic ionic liquids assisted electrodeposition for efficient electrocatalytic degradation of pesticide wastewater

Tang

Feng

2022

Water Science and Technology

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Pesticide wastewater is difficult to treat, and it is necessary to develop a new anode material electrochemical oxidation to efficiently degrade pesticide wastewater. DIL-PbO2-Ti/BDD electrodes with better electrocatalytic oxidation performance were obtained by using dicationic ionic liquid (DIL) for assisted electrodeposition of PbO2 modified boron-doped diamond (BDD) electrodes. At a current density of 100 mA cm−2 and a temperature of 25 °C using the DIL-PbO2-Ti/BDD electrode as anode and titanium plate as cathode. The electrochemical window and Oxygen evolution potential (OEP) of the DIL-PbO2-Ti/BDD electrode obtained by CV testing at a scan rate of 50 mV s−1 in 1 M H2SO4 were 4.12 V and 3.29 V, respectively. Under the conditions of current density of 100 mA cm−2, 25 °C, pH 12, salt content of 8%, chemical oxygen demand (COD) of 24,280.98 mg L−1, and total nitrogen (TN) content of 5,268 mg L−1, after electrification for 12 h, the removal efficiency of COD and TN reached 64.88% and 67.77%, respectively, indicating that the DIL-PbO2-Ti/BDD electrode has excellent electrocatalytic performance. In order to further understand the mechanism of electrochemical degradation of pesticide wastewater, HPLC-MS was used to detect the intermediates in the degradation process, and the possible degradation pathways were proposed in turn.

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Section: Degradation Of Pesticide Wastewatermentioning

confidence: 99%