Stefano Freguia

Optimised operational parameters for improved nutrient recovery from hydrolysed urine by bio-electroconcentration

J Monetti, P Ledezma, S Freguia

Journal article  |  2021  |  Separation and Purification Technology

Anthropogenic activity is responsible for an imbalance in the world's nutrient cycles. New methods to remove and recover nutrients..

Electro-concentration of urine designed for separation of sodium from nitrogen

J Jermakka, E Thompson Brewster, S Freguia, P Ledezma, M Kokko

Journal article  |  2021  |  Separation and Purification Technology

Source-separated urine is a natural liquid fertilizer used by humanity for millennia. Urine use in modern nutrient recycling can b..

Efficient nitrogen removal and recovery from real digested sewage sludge reject water through electroconcentration

V Koskue, S Freguia, P Ledezma, M Kokko

Journal article  |  2021  |  Journal of Environmental Chemical Engineering

Reject waters from the dewatering of anaerobically digested municipal sewage sludge are nitrogen-rich (ca. 1 gNH4-N L−1) wastewate..

Sustainable engineering of sewers and sewage treatment plants for scenarios with urine diversion.

S Freguia, K Sharma, O Benichou, M Mulliss, HK Shon

Journal article  |  2021  |  J Hazard Mater

Urine diversion (UD) has been studied for decades as a way to enable distributed sanitation and to recycle nutrients onto land to ..

Optimising nitrogen recovery from reject water in a 3-chamber bioelectroconcentration cell

V Koskue, JM Rinta-Kanto, S Freguia, P Ledezma, M Kokko

Journal article  |  2021  |  Separation and Purification Technology

With the growing demand for macronutrients, such as nitrogen, and environmental issues related to their production, there is incre..

Implementation of a Sulfide-Air Fuel Cell Coupled to a Sulfate-Reducing Biocathode for Elemental Sulfur Recovery

Enric Blazquez, David Gabriel, Juan Antonio Baeza, Albert Guisasola, Pablo Ledezma, Stefano Freguia

Journal article  |  2021  |  INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH

Bio-electrochemical systems (BES) are a flexible biotechnological platform that can be employed to treat several types of wastewat..

Impact of source-separation of urine on effluent quality, energy consumption and greenhouse gas emissions of a decentralized wastewater treatment plant

U Badeti, NK Pathak, F Volpin, U Dorji, S Freguia, HK Shon, S Phuntsho

Journal article  |  2021  |  Process Safety and Environmental Protection

The impact of urine diversion on the biological treatment processes at a decentralized wastewater treatment plant (WWTP) was inves..

Electrochemical system for selective oxidation of organics over ammonia in urine

J Jermakka, S Freguia, M Kokko, P Ledezma

Journal article  |  2021  |  Environmental Science: Water Research and Technology

Source-separated urine can enable efficient nutrient recycling, but the removal of the organic fraction that is required to ensure..

Selective Extraction of Medium-Chain Carboxylic Acids by Electrodialysis and Phase Separation

Paula Andrea Hernandez, Miaomiao Zhou, Igor Vassilev, Stefano Freguia, Yang Zhang, Jurg Keller, Pablo Ledezma, Bernardino Virdis

Journal article  |  2021  |  ACS OMEGA

Carboxylic acids obtained via the microbial electrochemical conversion of waste gases containing carbon dioxide (i.e., microbial e..

Electrochemical biofilm control by reconstructing microbial community in agricultural water distribution systems.

Peng Song, Yang Xiao, Zhiyong Jason Ren, John P Brooks, Lu Lu, Bo Zhou, Yunpeng Zhou, Stefano Freguia, Zhidan Liu, Ning Zhang, Yunkai Li

Journal article  |  2021  |  Journal of Hazardous Materials

Biofilm causes considerable technical challenges in agricultural water distribution systems. Electrochemical treatment (ECT) is a ..