Preparation of Fe-loaded needle coke particle electrodes and utilisation in three-dimensional electro-Fenton oxidation of coking wastewater

Treatment of Coking Wastewater by α-MnO2/Peroxymonosulfate Process via Direct Electron Transfer Mechanism

“…F value of X 1 , X 2 and X 3 was 131.051, 79.751 and 22.955, while p value was <0.0001, 0.0008 and 0.0020, respectively. The results suggested that the linear effect of X 1 , X 2 and X 3 on COD removal was significant, indicating that the three factors effect COD removal significantly in an order of catalyst dosage > PMS dosage > initial pH value [12]. In summary, we can conclude that the polynomial regression model can well predict COD removal from coking wastewater by the α-MnO 2 /PMS process.…”

“…China issued a strict discharge standard for coking wastewater (GB 16171-2012) [11]. Treatment of coking wastewater has become more and more sophisticated, evolving from simple mechanical approaches prevalent during the 1950s to 1960s to the boom of biochemical technology during the 1980s to 1990s [12]. However, disposed by biochemical technologies, coking wastewater may not meet the discharge standard due to its low biodegradability: non-biodegradable constituents account for over 40% of total organic compounds, and also large amounts of refractory organics [5,13].…”

Petroleum Wastewater Treatment

“…The high stability of the radical produced from it in different conditions, high solubility, a solid form, and, as a result, the ease of moving and storing, have shown the use of this substance in many research [38]. Regardless of these advantages, extensive studies on the use of persulfate show [13] that at room temperature, the ability of persulfate to decompose organic substances is low and slow; therefore, in order to accelerate the oxidation process with persulfate, it is necessary to perform an activation operation [12].…”

“…From another point of view, the disposal of untreated effluents from factories and industries creates many health risks for human societies [13]. In order to reduce these risks, wastewater treatment plans for factories must also be developed.…”

Characteristics and application of iron-based materials in heterogeneous Fenton oxidation for wastewater treatment: a review

“…12,13 Depending on the way the reactive substances are produced, AOPs can be classified as Fenton oxidation, 14 photocatalytic oxidation, 13 electrochemical oxidation, 15 etc. Hu et al 16 fabricated a novel Fe-loaded needle coke particle electrode and constructed a three-dimensional (3D) electro-Fenton system to treat coking wastewater (the physicochemical characteristics of the tested wastewater: COD: 1730, TN: 146.46). The 3D electro-Fenton system strongly degraded the coking wastewater, decomposing large organic compounds and residues mainly composed of olefins and alkanes.…”