1. Effect of hydraulic retention time on the electro-bioremediation of nitrate in saline groundwater
- Author
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Giulia Puggioni, Stefano Milia, Valentina Unali, Riccardo Ardu, Elena Tamburini, M. Dolors Balaguer, Narcís Pous, Alessandra Carucci, and Sebastià Puig
- Subjects
Biodegradation, Environmental ,Bioreactors ,Nitrates ,Environmental Engineering ,Denitrification ,Environmental Chemistry ,Nitrogen Oxides ,Chlorine ,Groundwater ,Pollution ,Waste Management and Disposal ,Water Pollutants, Chemical - Abstract
Bioelectrochemical systems (BES) have proven their capability to treat nitrate-contaminated saline groundwater and simultaneously recover value-added chemicals (such as disinfection products) within a circular economy-based approach. In this study, the effect of the hydraulic retention time (HRT) on nitrate and salinity removal, as well as on free chlorine production, was investigated in a 3-compartment BES working in galvanostatic mode with the perspective of process intensification and future scale-up. Reducing the HRT from 30.1 ± 2.3 to 2.4 ± 0.2 h led to a corresponding increase in nitrate removal rates (from 17 ± 1 up to 131 ± 1 mgNO
- Published
- 2022
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