Embedding wasted hairs in Ti/PbO2 anode for efficient and sustainable electrochemical oxidation of organic wastewater

A new advanced oxidation processes: electrochemical oxidation with iron promoting (EOIP) was presented and the treatment of an actual industrial wastewater from acrylonitrile production by three advanced oxidation processes (AOPs) has been studied: Fenton oxidation (FO), electro-Fenton oxidation (EFO), and electrochemical oxidation with iron promoting (EOIP). It was found that all the three processes were able to treat this wastewater, but different results in terms of efficiency and different behaviors were obtained. When the same dosage of H2O2 was added to the wastewater, the oxidation power of three AOPs increased in the order: FO < EFO < EOIP. Under the condition of higher dosage of H2O2, the three AOPs applied could achieve the better color removal. When the dosage of H2O2 was lower than 1,500 mg l−1, the color of the wastewater after treated increased from FO and EFO due to the formation of Fe (III) complexes, but this was not found in EOIP. The results of this work indicate that EOIP is a promising alternative for COD and color removal from organic wastewater.

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Preparation and characteristics of a nano-PbO2 anode for organic wastewater treatment

Chemical Engineering Journal ◽

10.1016/j.cej.2010.08.018 ◽

2011 ◽

Vol 166 (1) ◽

pp. 15-21 ◽

Cited By ~ 67

Author(s):

Chao Tan ◽

Bo Xiang ◽

Yijiu Li ◽

Jianwei Fang ◽

Min Huang

Keyword(s):

Wastewater Treatment ◽

Pbo2 Anode ◽

Organic Wastewater

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Modified lead dioxide for organic wastewater treatment: Physicochemical properties and electrocatalytic activity

Journal of the Serbian Chemical Society ◽

10.2298/jsc180712091s ◽

2019 ◽

Vol 84 (2) ◽

pp. 187-198 ◽

Cited By ~ 3

Author(s):

Olesia Shmychkova ◽

Tatiana Luk’yanenko ◽

Larisa Dmirtikova ◽

Alexander Velichenko

Keyword(s):

Wastewater Treatment ◽

Physicochemical Properties ◽

Electrochemical Oxidation ◽

Oxygen Evolution ◽

Electrocatalytic Activity ◽

Lead Dioxide ◽

Chemical Properties ◽

Destruction Rate ◽

Physico Chemical ◽

Pbo2 Anode

An investigation is reported on lead dioxide electrodeposition from methanesulfonate electrolytes additionally containing Ni2+ ions. It is shown that lead dioxide electrodes micromodified by nickel have different physico-chemical properties vs. nonmodified PbO2-anodes that are formed during the deposition. Electrocatalytical reactivity of electrodes involved in comparison to both the oxygen evolution, as well as to the electrooxidation of 2,4- dichlorophenoxyacetic (2,4-D) acid is investigated. Processes of electrochemical oxidation of 2,4-D on various materials occur qualitatively with the same mechanism and differ only in the rate. It is shown that the Ni-PbO2-anode possesses the highest electrocatalytic activity: the destruction rate of 2,4-D on it increases in 1.5 times in comparison with nonmodified lead dioxide. The COD of a 0.4 mM solution of 2,4-D, determined by the dichromate method, is 90.0 mg dm-3 which is 94 % of the theoretical value.

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