Ferric sludge pollution and unsustainable utilization of Fe(II) reagent were tough nuts to crack for homogeneous Fenton treatment. Previous regeneration methods are still limited by high consumption or low rate. In this work, granular was introduced into the biocathode microbial electrolysis cell (MEC), improve Fe(II)-regeneration rate from actual ferric at near neutral pH. Wastewater constitue...

Septic tanks are used for the removal of organic particulates in wastewaters by physical accumulation instead of through the biological production of biogas. Improved biogas production in septic tanks is crucial to increase the potential of this system for both energy generation and organic matter removal. In this study, the effect on the biogas production and biogas quality of coupling a 20 L ...

Nanopalladium catalysts can be synthesized by the precipitation of palladium (Pd) on the surface of bacteria leading to the production of biogenic Pd nanoparticles (bio-Pd). For example, Shewanella oneidensis can reduce Pd(II) and subsequently precipitate it as Pd(0) nanocrystals on their cell wall and in their periplasmic space when a hydrogen donor is provided (De Windt et al., 2005). No expe...

Stack configuration of multiple bioelectrochemical system (BES) modules is considered nowadays as the best option for a successful scale-up this technology, either in case electricity-producing microbial fuel cells (MFC) or electricity-consuming electrolysis electrosynthesis (MEC MES, respectively). While parallel electrical connection allows to independently operate each BES stack without majo...

Anaerobic digestion process can be improved in combination with bioelectrochemical systems order to recover energy and resources from digestates. An electromethanogenic microbial electrolysis cell (MEC) coupled an ammonia recovery system based on hydrophobic membranes (ARS-HM) has been developed ammonia, reduce organic matter content upgrade biogas digested pig slurry. A lab-scale dual-chamber ...

The effectiveness of refinery wastewater (RW) treatment using air-cathode, microbial fuel cells (MFCs) was examined relative to previous tests based on completely anaerobic microbial electrolysis cells (MECs). MFCs were configured with separator electrode assembly (SEA) or spaced electrode (SPA) configurations to measure power production and relative impacts of oxygen crossover on organics remo...

Microbial electrochemical technologies (METs) constitute the core of a number of emerging technologies with a high potential for treating urban wastewater due to a fascinating reaction mechanism—the electron transfer between bacteria and electrodes to transform metabolism into electrical current. In the current work, we focus on the model electroactive microorganism Geobacter sulfurreducens to ...

Ammonia removal from wastewater was successfully achieved by simultaneous nitrification and denitrification (SND) in a double-chamber microbial electrolysis cell (MEC). The MEC operations at different applied voltages (0.7 to 1.5 V) initial ammonia concentrations (30 150 mg/L) were conducted order evaluate their effects on performance batch mode. maximum efficiency of 96.8% obtained the anode V...