Boron-doped diamond (BDD) electro-oxidation coupled with nanofiltration for secondary wastewater treatment: Antibiotics degradation and biofouling

Electrochemical disinfection has gained interest as an alternative to conventional wastewater treatment because of its high effectiveness and environmental compatibility. Two and a half billion people currently live without improved sanitation facilities. Our research efforts are focused on developing and implementing a freestanding, additive-free toilet system that treats and recycles blackwater on site. In this study, we sought to apply electrochemical disinfection to blackwater. We compared commercially available boron-doped diamond (BDD) and mixed metal oxide (MMO) electrodes for disinfection efficiency in E. coli–inoculated model wastewater. The MMO electrodes were found to be more efficient and thus selected for further study with blackwater. The energy required for disinfection by the MMO electrodes increased with the conductivity of the medium, decreased with increased temperature, and was independent of the applied voltage. Fecal contamination considerably increased the energy required for blackwater disinfection compared to model wastewater, demonstrating the need for testing in effluents representing the conditions of the final application.

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Comparison of Pyridazinium Electro-oxidation on Boron-doped Diamond (BDD) and SnO2 in a Basic Medium

Portugaliae Electrochimica Acta ◽

10.4152/pea.201501013 ◽

2015 ◽

Vol 33 (1) ◽

pp. 13-21 ◽

Cited By ~ 2

Author(s):

H Bouya ◽

M Errami ◽

R Salghi ◽

A Jodeh ◽

S Messali ◽

...

Keyword(s):

Basic Medium ◽

Boron Doped Diamond ◽

Boron Doped ◽

Electro Oxidation

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Electro-oxidation of landfill leachate using boron-doped diamond: role of current density, pH and ions

Water Science & Technology ◽

10.2166/wst.2019.040 ◽

2019 ◽

Vol 79 (5) ◽

pp. 921-928 ◽

Cited By ~ 3

Author(s):

F. Agustina ◽

A. Y. Bagastyo ◽

E. Nurhayati

Keyword(s):

Current Density ◽

Organic Content ◽

Cod Removal ◽

Boron Doped Diamond ◽

Leachate Treatment ◽

Ammonium Removal ◽

Boron Doped ◽

Wide Range ◽

Electro Oxidation

Abstract Electro-oxidation using a boron-doped diamond (BDD) anode can be used as an alternative to leachate treatment. Aside from the hydroxyl radical, BDDs are capable of generating chloride and sulfate radical species that play significant roles in the oxidation of pollutants. This research investigated the role of Cl−:SO42− ions at molar ratios of 237:1, 4:1 and 18:1, and the influence of applied current density (i.e. 50, 75 and 100 mA cm−2) on the removal of organic and ammonium contaminants. The results show that current density had considerable effects on chemical oxygen demand (COD) and colour removal, while ion composition of Cl−:SO42− at pH 3, 5 and 8.5 (original pH) gave different effects on COD and ammonium removal. The pH had a significant effect on the COD removal at the ratio of 237:1, but showed no dramatic effect at the ratio of 18:1, giving ∼40% of COD removal at all pHs tested. This indicates that electro-oxidation at the ratio of 18:1 could be effectively conducted at a wide range of pH. Furthermore, the optimum ammonium removal was obtained at pH 8.5 with the ratio of 237:1. This process was found to be ineffective in increasing the biodegradability index of the leachate; instead, it exhibited mineralization of organic content.

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Advanced Electro‐Oxidation with Boron‐Doped Diamond for Acetaminophen Removal from Real Wastewater in a Microfluidic Reactor: Kinetics and Mass‐Transfer Studies

ChemElectroChem ◽

10.1002/celc.201900182 ◽

2019 ◽

Vol 6 (11) ◽

pp. 2908-2916 ◽

Cited By ~ 10

Author(s):

Emmanuel Mousset ◽

Marta Puce ◽

Marie‐Noëlle Pons

Keyword(s):

Mass Transfer ◽

Boron Doped Diamond ◽

Reactor Kinetics ◽

Boron Doped ◽

Microfluidic Reactor ◽

Mass Transfer Studies ◽

Electro Oxidation ◽

Real Wastewater

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Nature, Mechanisms and Reactivity of Electrogenerated Reactive Species at Thin‐Film Boron‐Doped Diamond (BDD) Electrodes During Electrochemical Wastewater Treatment

ChemElectroChem ◽

10.1002/celc.201900159 ◽

2019 ◽

Vol 6 (9) ◽

pp. 2379-2392 ◽

Cited By ~ 21

Author(s):

Soliu O. Ganiyu ◽

Carlos A. Martínez‐Huitle

Keyword(s):

Thin Film ◽

Wastewater Treatment ◽

Reactive Species ◽

Boron Doped Diamond ◽

Boron Doped

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Aqua-Biomant®: integrated biological and electrochemical oxidation for industrial wastewater treatment

Water Science & Technology ◽

10.2166/wst.2007.402 ◽

2007 ◽

Vol 55 (12) ◽

pp. 195-200 ◽

Cited By ~ 1

Author(s):

A. Rüdiger ◽

I. Rüdiger ◽

L. Jurisevic

Keyword(s):

Wastewater Treatment ◽

Electrochemical Oxidation ◽

Industrial Wastewater ◽

Innovative Technology ◽

Boron Doped Diamond ◽

Industrial Wastewater Treatment ◽

Boron Doped ◽

High Efficient ◽

Persistent Organic Compounds ◽

Total Residence Time

An innovative technology for industrial wastewater treatment has been developed. The main focus of the new system is a transformation of persistent organic compounds (biorecalcitrant COD) into a biodegradable fraction, followed by high efficient biological elimination using specialised bacteria's. To fulfill these targets the Aqua-Biomant® process integrates two treatment steps: an aerated biological upflow filter and a electrochemical oxidation technique using boron doped-diamond electrodes. The advantages of the process are high efficient COD removal with reduced energy consumption combined with low total residence time.

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