In the present study, bioelectricity generation using a living plant in soil was achieved by converting solar energy into electricity on the principles of plant photosynthesis. The plants Chlorophytum comosum, Chasmanthe floribunda and Papyrus diffuses were used in microbial fuel cells (MFCs) and produced, respectively, a maximum current of 25, 31 and 19 mA/m², without the use of any nutrient or membrane. In this study, the importance of light was demonstrated by the high current values generated during daytime, and the microorganisms at the anode-rhizosphere interface were examined.

This work describes crucial steps LED lighting from a simple device microbial fuel cell without membrane, using a domestic wastewater. Firstly, wastewater from activated sludge of Beni Messous was analyzed to be inoculated in the MFC as a source of anodic electroactive biofilm AEB using acetate as substrate. The AEB revealed higher current densities exceeding 100 mA/m2, where, working electrode (WE) polarized at +0.155 V/SCE had given better result compared to −0.155/SCE and +0.3 V/SCE. The microbial analyses had demonstrated a microbial population diversify belonging to bacterial groups already studied and listed in the literature to be electroactive and that Gram negative bacteria were dominated more than Gram positive. Secondly, the performances of a membrane less MFC (ML-MFC) were investigated polarization curves study and demonstrated that ML-MFC had a reactor behavior to produce current. After 150 days of ML-MFC operation, the maximum power and current densities had reached 7.07 and 50 mA/m², respectively, with an internal resistance of 434 Ω. Through the present study, using Benimessous-STEP wastewater for the renewable energy (bioelectricity) production via a ML-MFC was considered as a feasible, economical, and sustainable process.

This study discusses the degradation of biocide solution containing N,N Methylene-bis-morpholine by electro-Fenton process. Hydrogen peroxide (H₂O₂) was produced by electro-reduction of oxygen dissolved in a diluted acid solution containing the supporting electrolyte. This oxidation process allows the production of active intermediates, which react on the organic compounds, leading to their mineralization. The independent current parameters, Fe³⁺ concentration, in the range (0.3–2.77) mA/cm² and (2.8–224) mg/L, respectively, were evaluated. Other parameters related to optimization of generation of hydrogen peroxide were explored, such as the optimal cathodic potential, electrolysis/aeration time, the concentration of supporting electrolyte, and effect of pH, and investigated to find the best experimental conditions for achieving generation of oxidant (H₂O₂) in situ. Results showed that potential of −500 mV/ECS, 0.05 M Na₂SO₄ electrolyte, O₂ sparging during 2 h, and pH 3 were the best conditions for production of the hydrogen peroxide. After optimizing the operational parameters such as Fe³⁺ concentration of 28 mg/L and current density of 1.4 mA/cm², the mineralization of N,N Methylene bismorpholine was of 97% efficiency after 6 h to treatment.