Simultaneous Production Of Electricity Research Articles

Biodiesel production integrated with glycerol steam reforming process, solid oxide fuel cell (SOFC) power plant

Process of biodiesel production integrated with glycerol steam reforming process, solid oxide fuel cell power plant, and also the organic Rankine cycle for the simultaneous production of biodiesel and electricity is investigated. In the biodiesel production scenario, biodiesel is obtained from waste cooking oil using acid catalyst coupled with hexane extraction. The glycerol obtained from the above method is subjected to steam reforming process to produce hydrogen. The hydrogen produced is then used as fuel in the solid oxide fuel cell to provide thermal and electrical energy for biodiesel production and reforming processes. In addition, generating extra power will allow biodiesel production to be more economical by injecting it into the electricity network. It also provides the heat duty of organic Rankine cycle. Sensitivity analysis is accomplished on the proposed model to indicate the effects of several parameters on the biodiesel production, glycerol production, power generation, and process efficiency. This study showed that with increasing oil flow rate, total generated power in SOFC, SOFC cycle efficiency, input flow to fuel cell and cell number decreased. Also, with increasing the fuel utilization coefficient, electrical efficiency, cell number, total output power from SOFC and overall thermal efficiency increased. The effect of inlet heat to distillation towers on parameters such as overall thermal efficiency and electrical efficiency and total generated power was also investigated. As main results, solid oxide fuel cell efficiency, Electrical efficiency, and overall thermal efficiency based on LHV are 25.09%, 28.14%, and 85.16%, respectively. Overall, developing a biodiesel production plant by upgrading glycerol to hydrogen through steam reforming and using hydrogen produced in solid oxide fuel cell and employing organic Rankine cycle to generate power is an attractive strategy to make biodiesel production cycles more economical.

Exergy performance of a new ORC configuration of a solar cogeneration system using a gas ejector

In the context of sustainable development and more particularly the conversion of heat into electricity, the present work proposes a new system of cogeneration operating at low energy value. It’s an organic Rankine cycle, associated with a gas ejector and operating with different organic fluids. It should be noted that the development of the ORC technology is partly a well-adapted response to problems of energy saving and ecosystem preservation. Accordingly, this paper presents a new configuration of a cogeneration system operating at low temperature and ensuring the simultaneous production of electricity and refrigeration. The proposed system is operating under transcritical and subcritical regime using solar energy as thermal source. On the other hand, an energy and exergy study has been developed by choosing the refrigerants R124, R236fa, R1234yf and R1234ze as working fluids according to their low environmental impact and thermodynamic properties. The results of the numerical simulation carried out as part of this study have also shown the importance of integrating the ejector into the proposed machine. Indeed, we investigated the effect of the thermodynamic parameters of the ejector on the coefficient of performance and the exergy efficiency of the cogeneration system.

Characterization of Bone Char and Carbon Xerogel as Sustainable Alternative Bioelectrodes for Bioelectrochemical Systems

Bioelectrochemical systems (BES) are growing future sustainable energy and chemical production technologies that combine biological catalytic redox activity with classic abiotic electrochemical reactions and physics. Several aspects of these systems, such as cell configuration, applied voltage, electrode materials, inoculum/substrate, and low-cost electrodes to facilitate scaling, have been studied and reported. This work focuses on the development of inexpensive materials with desirable characteristics for use as electrodes for BES. The two selected carbon-based anode materials were carbon xerogels and bone char; both have different surface morphologies and are carbonaceous materials with precursors that allow control of their porosity. Industrial-grade raw material and cattle bone waste were used to fabricate the anodes. The electrochemical properties of the bone char and carbon xerogel electrodes were characterized by the open circuit voltage (OCV), electrochemical impedance spectroscopy, and cyclic voltammetry. Chronoamperometry was recorded for 25 days to follow the setup bioanodes. When the microbial bioanode process was completed, the bioelectrodes were immersed into fresh inoculum/substrate, and BES were operated for 10 days at the OCV until a relatively constant cell voltage output was achieved. The results show that the carbon xerogel surface area (468 m2/g) is 5 times higher than bone char, but the xerogel surface roughness is lower than that of the char. Similar to the electrochemical properties, the current density of the xerogel (25 mA/cm2) is 4 times less than that of the bone; therefore, the biofilm growth is promoted on the bone char surface. Our findings show that the bone char bioanode has a capacitance feature of 1.65 F/m2, which is even higher than the double layer capacitances of carbon-based materials reported in the literature. Hence, it is possible to use BES for simultaneous production and storage of renewable electricity.

Osmotic Pressure Compensated Solute Ectoine Improves Salt Tolerance of Microbial Cells in Microbial Fuel Cells

AbstractIn the technology of microbial fuel cells (MFCs) for simultaneous electricity production and wastewater purification, the electricity production of MFCs decreases when the salt concentration in the wastewater is high. Increasing the electricity production of MFCs under high salt conditions is a great challenge. This paper studies the reasons for the decline of electricity production of MFCs under high salt conditions and develops ways to increase the electricity generation. The results show that high salt inhibits the growth of electrogenic microorganisms on the anode of MFCs, thereby reducing the electricity production. Addition of ectoine, an osmotic pressure compensated solute, can increase the salt tolerance of electrogenic microorganisms, thereby increasing the electricity generation of MFCs. With the addition of 1 mmol L−1 ectoine to the substrate, the average voltage output of the MFCs based on mixed microbial flora anode was increased by 60.4% (±3.9%). Under this condition, microbial diversity analysis showed that the dominant growth and electricity production genus Acinetobacter accounted for 38.9% in the microbial community of anode biofilm.

Simultaneous production of fresh water and electricity via multistage solar photovoltaic membrane distillation

The energy shortage and clean water scarcity are two key challenges for global sustainable development. Near half of the total global water withdrawals is consumed by power generation plants while water desalination consumes lots of electricity. Here, we demonstrate a photovoltaics-membrane distillation (PV-MD) device that can stably produce clean water (>1.64 kg·m−2·h−1) from seawater while simultaneously having uncompromised electricity generation performance (>11%) under one Sun irradiation. Its high clean water production rate is realized by constructing multi stage membrane distillation (MSMD) device at the backside of the solar cell to recycle the latent heat of water vapor condensation in each distillation stage. This composite device can significantly reduce capital investment costs by sharing the same land and the same mounting system and thus represents a potential possibility to transform an electricity power plant from otherwise a water consumer to a fresh water producer.

Investigation of a novel multigeneration system driven by a SOFC for electricity and fresh water production

An integrated system for the simultaneous production of electricity and fresh water is proposed based on a solid oxide fuel cell (SOFC). In this system, a Kalina cycle is utilized to recover waste heat from the SOFC stack. Furthermore, a thermoelectric generator is employed to recover the heat dissipated in the Kalina condenser. In the proposed configuration, the energy required for reverse osmosis desalination can be supplied by a Kalina cycle and a thermoelectric generator. The system uses methane as its primary fuel. Electrochemical equations for the fuel cell are considered, as are thermodynamic and exergy-economic relations for the components of the system. The effects on the performance of the proposed hybrid system of variations in design parameters such as current density, SOFC inlet temperature, fuel utilization factor, inlet pressure of the Kalina cycle turbine and concentration of water-ammonia solution in the Kalina cycle are examined. The SOFC stack is seen to make the highest contribution to the total exergy destruction of the system. To strive simultaneously for maximum efficiency and minimum total cost, optimization is carried out using a genetic algorithm. The total optimum point of the system is the trade-off between the optimization objectives. At this point, the net electrical power production is about 1.3 MW and the production rate of fresh water reaches 226 m3/day, while the exergy efficiency and total cost rate are 54% and 36.8 $/hr, respectively.

Spontaneous reduction of low-potential silver(I) dithiosulfate complex in bioelectrochemical systems for recovery of silver and simultaneous electricity production

ABSTRACT Waste fixer solutions generated from photographic processing are silver-rich effluents, in which silver exists in the form of a dithiosulfate complex ([Ag(S2O3)2]3−), a stable and water-soluble chemical compound. This study investigated the electrochemical reduction of [Ag(S2O3)2]3− at different initial concentrations for silver recovery, combined with electricity production in a two-chamber bio-electrochemical system using a cation exchange membrane as the separator. During the biological oxidation of acetate to produce electrons in the anode chamber, [Ag(S2O3)2]3− was reduced spontaneously by acting as an electron acceptor in the cathode chamber, despite its low standard redox potential ([Ag(S2O3)2]3−/Ag0, E 0 = 0.016 V). After 48 h in each batch of operation, a Ag recovery efficiency of 81.7–95.2%, with a columbic efficiency of 12.9–21.4% and a maximum power density of 1500–2647 mW/m3, were obtained with an initial [Ag(S2O3)2]3− concentration of 10–20 mM, respectively. When the initial [Ag(S2O3)2]3− concentration increased to 30 mM, cell voltage production did not improve significantly, and a small decrease in Ag recovery efficiency to 93.2% was found. After 61 days of operation, the cathode surface was covered by different-sized silver clusters under SEM observation. The results were confirmed by EDX and XRD characterization, in which metallic silver with high purity was detected. SEM-EDX-XRD characterization of the membrane and the measurements in the control reactor confirmed that there was no diffusion of negatively charged [Ag(S2O3)2]3− complex through the membrane. Thus, this study showed a successful recovery of Ag from the low-potential [Ag(S2O3)2]3− complex without energy consumption, secondary waste generation, and loss of Ag.

Simultaneous electricity generation and wastewater treatment in a photocatalytic fuel cell integrating electro-Fenton process

A novel photocatalytic fuel cell system integrating electro-Fenton process comprised of WO3/W photoanode and Fe@Fe2O3/carbon felt cathode is constructed in an undivided chamber for pollutants degradation with simultaneous electricity production. Compared with single photocatalysis and electro-Fenton, the integration system achieves better organics removal efficiency. It is found that the increase of light intensity and electrolyte concentration could improve the performance, but too low or high pH value have a negative impact. The highest short circuit current density 0.59 mA/cm2 and maximum power output 0.34 mW/cm2 is obtained using 20 mg/L of methyl blue. Moreover, various indicators such as fill factor, coulombic efficiency, and cathodic H2O2 efficiency are analyzed. Furthermore, a reasonable working principle is proposed, indicating that the integration system performance is strengthened by better electron/hole separation and enhanced radical reactions. Therefore, the composite system is an excellent candidate for simultaneous wastewater treatment and energy generation.

Sequential anaerobic and electro-Fenton processes mediated by W and Mo oxides for degradation/mineralization of azo dye methyl orange in photo assisted microbial fuel cells

The intensification of the degradation and mineralization of the azo dye methyl orange (MO) in contaminated water with simultaneous production of renewable electrical energy was achieved in photo-assisted microbial fuel cells (MFCs) operated sequentially under anaerobic - aerobic processes, in the presence of Fe(III) and W and Mo oxides catalytic species. In this novel process, the W and Mo oxides deposited on the graphite felt cathodes accelerated electron transfer and the reductive decolorization of MO. Simultaneously, the mineralization of MO and intermediate products was intensified by the production of hydroxyl radicals (HO) produced by (i) the photoreduction of Fe(III) to Fe(II), and by (ii) the reaction of the photochemically and electrochemically produced Fe(II) with hydrogen peroxide, which was produced in-situ during the aerobic stage. Under anaerobic conditions, the reductive decolorization of MO was driven by cathodic electrons, while the partial oxidation of the intermediates proceeded through holes oxidation, producing N,N-dimethyl-p-phenylenediamine. In contrast, under aerobic conditions superoxide radicals (O2−) were predominant to HO, forming 4-hydroxy-N,N-dimethylaniline. In the presence of Fe(III) and under aerobic conditions, the oxidation of the intermediate products driven by HO superseded that of O2−, yielding phenol and amines, via the oxidation of 4-hydroxy-N,N-dimethylaniline and N,N-dimethyl-p-phenylenediamine. These sequential anaerobic and electro-Fenton processes led to the production of benzene and significantly faster oxidation reactions, compared to either the anaerobic or the aerobic operation in the presence of Fe(III). Complete degradation and mineralization (96.8 ± 3.5%) of MO (20 mg/L) with simultaneous electricity production (0.0002 kW h/kg MO) was therefore achieved with sequential anaerobic (20 min) - aerobic (100 min) operation in the presence of Fe(III) (10 mg/L). This study demonstrates an alternative and environmentally benign approach for efficient remediation of azo dye contaminated water with simultaneous production of renewable energy.

Thermal and electrical performance evaluation of PV/T collectors in Southern India

ABSTRACT Combination of Photovoltaic and solar thermal collectors is used for the simultaneous production of electricity and heat. The proposed research work evaluates the thermal performance of Photovoltaic/Thermal (PV/T) hybrid collectors for the hot and humid weather condition of North Tamilnadu, South India. It is done by providing the cooling arrangement under the collector using wooden duct with baffles. Various parameters influencing the performance of the collector such as solar irradiance, ambient, glazing and tedlar temperatures, air inlet and outlet temperatures at the duct, velocity and mass flow rate of air inside the duct are analysed. The thermal and electrical performances of the PV/T collectors are evaluated under natural and forced circulation of air through the thermal collector. The experimental results are presented in this paper.

Improved organic pollutants removal and simultaneous electricity production via integrating Fenton process and dual rotating disk photocatalytic fuel cell system using bamboo charcoal cathode

A coupling system combining Fenton process with dual rotating disk photocatalytic fuel cell (PFC) was developed to improve methyl orange (MO) removal and simultaneous electricity production, in which the (NH4)3PO4 modified bamboo charcoal (BC) was acted as cathode catalyst. Due to the existence of the N and P containing functional groups on the BC catalyst and the rotating electrode, the hybrid system could efficiently reduce oxygen to generate some hydroxyl radical and related species for MO removal. Therefore, Fenton-PFC-BC with rotation system showed a superior MO removal efficiency of 85%, 2.4 times higher than that in the traditional Fenton-PFC-Pt with aeration system. The radicals inhibition assays and hydrogen peroxide quantitative studies revealed that HO, h+ and O2− were primarily responsible for MO degradation. Furthermore, the MO removal performance for Fenton-PFC-BC with rotation system was investigated at different parameters (such as rotating speed, BC loading, pH and ferrous ion concentration) to obtain optimal operation conditions. Results of energy analysis and reusability experiment showed that the proposed Fenton-PFC-BC with rotation system provided a cost-effective and stable method for the organic degradation and energy recovery.

Using adsorption chillers for utilising waste heat from power plants

At present, energy efficiency is a very important issue and it is power generation facilities, among others, that have to confront this challenge. The simultaneous production of electricity, heat and cooling, the so-called trigeneration, allows for substantial savings in the chemical energy of fuels. More efficient use of the primary energy contained in fuels translates into tangible earnings for power plants while reductions in the amounts of fuel burned, and of non-renewable resources in particular, certainly have a favorable impact on the natural environment. The main aim of the paper was to investigate the contribution of the use of adsorption chillers to improve the energy efficiency of a conventional power plant through the utilization of combined heat and power waste heat, involving the use of adsorption chillers. An adsorption chiller is an item of industrial equipment that is driven by low grade heat and intended to produce chilled water and desalinated water. Nowadays, adsorption chillers exhibit a low coefficient of performance. This type of plant is designed to increase the efficiency of the primary energy use. This objective as well as the conservation of non-renewable energy resources is becoming an increasingly important aspect of the operation of power generation facilities. As part of their project, the authors have modelled the cycle of a conventional heat power plant integrated with an adsorption chiller-based plant. Multi-variant simulation calculations were performed using IPSEpro simulation software.

Construction of a high-performance photocatalytic fuel cell (PFC) based on plasmonic silver modified Cr-BiOCl nanosheets for simultaneous electricity production and pollutant removal.

The development of high-performance photocatalytic fuel cells (PFCs) is seriously hampered by poor light utilization rates and low charge carrier transfer efficiency. Herein, we have experimentally obtained plasmonic Ag modified Cr-BiOCl (Cr-BOC/Ag) with high visible light photocatalytic activity and provided direct evidence for the substantially enhanced catalytic activity in metal-semiconductor photocatalysts. The experimental results revealed that the Cr doping and Ag modification could not only extend the photo absorption of BiOCl from the UV to the visible light region but could also greatly increase the generation and transfer rate of charge carriers because of its narrowed band gap and the localized surface plasmon resonance (LSPR) effect of metallic Ag. Under visible light irradiation, the Cr-BOC/Ag showed a remarkable enhancement in the PFC performance when the optimum contents of Cr doping and Ag loading was 14.4% and 4%, respectively. The trapping experiments and multiple characterizations demonstrated that the advantageous combination of the Cr doping effect and SPR effect induced by the Ag nanoparticles is responsible for the high generation rate of oxidative species and effective charge carrier transfer. By using RhB as fuel, approximately 75.1% color removal efficiency and 8.38% coulombic efficiency were obtained under visible light irradiation for 240 min, which are higher than those of MO and TC. In addition, the Jsc and Voc of the Cr-BOC/Ag photoanode were measured to be 0.0073 mA cm-2 and 0.543 V.

Electrochemical hydrogen and electricity production by using anodes made of commercial aluminum

Two commercial aluminum alloys have been studied as anodes for simultaneous electrochemical hydrogen and electricity production, as compared with pure aluminum. Both are very active in corrosive hydrogen production and functional as anodes in aluminum-air batteries. Both produced approximately 3 times more hydrogen than pure aluminum while their electrochemical characteristics were substantially preserved with only small modifications with respect to pure aluminum. Devices employing commercial aluminum anodes can be constructed and may be used for producing both hydrogen and electricity at the expense of aluminum.

One-pot exploitation of chitin biomass for simultaneous production of electricity, n-acetylglucosamine and polyhydroxyalkanoates in microbial fuel cell using novel marine bacterium Arenibacter palladensis YHY2

A novel marine bacterium Arenibacter palladensis YHY2 isolated from Eastern Sea, South Korea revealed hydrolysing ability of crab chitin in shake flask and microbial fuel cell (MFC) systems. Under shake flask cultivation, strain YHY2 demonstrated 71.44 ± 1.90 U/ml chitinase activity with the microbial cell optical density (OD) 0.699 ± 0.021. High performance liquid chromatography (HPLC) results showed N-acetylglucosamine (GlcNAc) as the major by-product of chitin degradation. Furthermore, Ralstonia eutropha H16 which has carbon utilization limited to GlcNAc and fructose was co-cultivated with YHY2 to consume GlcNAc and accumulate polyhydroxyalkanoates (PHA). However, on co-cultivating strain YHY2 with H16 surprisingly showed higher production of chitinase (97.89 ± 2.72 U/ml) and GlcNAc (80.31 mg GlcNAc/g chitin) corresponding to the microbial cell OD (1.065 ± 0.005) at 120 h. In addition, marine strain YHY2 demonstrated biofilm formation, hence co-cultivation of strain YHY2 and H16 under MFC system was performed to check the electricity production. Maximum electricity current output density was 15.15 μA/cm2 at the initial stage and 10.72 μA/cm2 at 204 h. GlcNAc (196.34 mg GlcNAc/g chitin) was produced along with other metabolites like butyrate, acetate, lactate, and propionate in MFC system. The microbial cell biomass from MFC was analysed for PHA content showed 1.020 g/l of 3-polyhydroxybutyrate (PHB) and 0.198 g/l of 3-polyhydroxyvalerate (PHV) as the main components of PHA. Moreover, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) were performed to reveal changes in chitin before and after degradation. Thus, the exploitation of recalcitrant chitin biomass for simultaneous production of GlcNAc, electricity, and PHA in one-pot MFC system was the productive asset for sustainable development.

Algae cathode microbial fuel cells for cadmium removal with simultaneous electricity production using nickel foam/graphene electrode

Microalgae (Chlorella sp. QB-102) was introduced into microbial fuel cell (MFC) as the cathode for Cd(II) removal using nickel foam/graphene (NF/rGO) as electrodes. It was found that graphene enhanced the power generation and decreased the internal resistance in the algal-cathode MFC. The start-up time was shortened and the maximum power density obtained by using NF/rGO (36.4 mW m−2) was eight times higher against bare NF. Graphene further improve the maximum tolerable concentrations of Cd(II) in the algal-cathode, which estimated to be 50 ppm. Using NF/rGO electrode, the algal-cathode MFC achieved a high Cd(II) removal efficiency of almost 95% and a maximum adsorption amount of 115 g m−2. It was found that hydroxide precipitation and biosorption are the major mechanisms for the Cd removal in the biocathode self-sustained MFC. The results suggested that photoautographic MFC is feasible and effective for heavy metal removal in the algal-cathode and graphene modification in the electrodes is recommended.

Simultaneous production of electricity and hydrogen from methanol solution with a new electrochemical technology

It is known that the reaction from methanol to hydrogen has a positive Gibbs free energy and therefore cannot occur spontaneously. In the present work, by utilizing the chemical energy of neutralization, a new electrochemical technology was developed to produce hydrogen and electricity from methanol solution simultaneously, without needing external energy input. In our designed electrochemical cell, hydrogen can be produced on cathode while methanol can be oxidized on anode with additional electricity production. The effect of anode surface area on hydrogen production rate and power output was also investigated. With anode apparent surface area of 6.15 cm2, initial hydrogen production rate can reach up to 1.07 m3 H2 m−3 d−1 and the maximum power density output of 1.26 W m−2 can be achieved, at the same time. Although it is only a preliminary work, our work is supposed to provide a new approach for the on-board hydrogen production for the application of various fuel cell technologies, which is urgently needed nowadays.

Total organic carbon and total nitrogen removal and simultaneous electricity generation for nitrogen-containing wastewater based on the catalytic reactions of hydroxyl and chlorine radicals

The treatment of nitrogen-containing organic wastewater is a difficult problem because organic and nitrogen contents are hard to remove simultaneously for the common sewage disposal technologies. Here we propose a new method to efficiently remove total organic carbon and total nitrogen and generate electricity simultaneously for this wastewater. The key idea of design is that organics and ammonia nitrogen is converted into CO2 and N2 by catalytic reacting with hydroxyl and chlorine radicals, respectively, while generating electricity concurrently in a self-biased wastewater fuel cell. Nitrate-N (including original or generated) was reduced on Pd/Cu modified Ni foam electrode with high selectivity toward N2, realizing the completely removal of total nitrogen from the water. Moreover, self-bias voltage was generated by employing WO3 nanoplate array electrodes and silicon photovoltaic cells as a hybrid photoanode to enhance the charge separation. This system was also successful in extending the light harvest. A series of experiments were performed with nitrate-N (ammonium-N) and phenol and the results indicated the removal efficiency of nitrate-N (ammonium-N) was 98.7% (91.5%) in 90 min and total nitrogen was efficiently transformed to N2 with extending time to 120 min. The system also showed a superior performance for phenol degradation (99.1% in 90 min). Combined with the analysis of ESR and free radical capture experiment, it was concluded that chlorine radical played an important role in the phenol and ammonia-N oxidation. In addition, maximum power density output of the system reached 1.23 mW cm−2. This study offers a self-sustaining approach for simultaneous nitrogen-containing organic wastewater treatment and electricity production.

Simultaneous electricity production and antibiotics removal by microbial fuel cells

The removal of antibiotics is crucial for improvement of water quality in animal wastewater treatment. In this paper, the performance of microbial fuel cell (MFC) in terms of degradation of typical antibiotics was investigated. Electricity was successfully produced by using sludge supernatant mixtures and synthesized animal wastewater as inoculation in MFC. Results demonstrated that the stable voltage, the maximum power density and internal resistance of anaerobic self-electrolysis (ASE) −112 and ASE-116 without antibiotics addition were 0.574 V, 5.78 W m−3 and 28.06 Ω, and 0.565 V, 5.82 W m−3 and 29.38 Ω, respectively. Moreover, when adding aureomycin, sulfadimidine, roxithromycin and norfloxacin into the reactors, the performance of MFC was inhibited (0.51 V–0.41 V), while the output voltage was improved with the decreased concentration of antibiotics. However, the removal efficiency of ammonia nitrogen (NH3-N) and total phosphorus (TP) were both obviously enhanced. Simultaneously, LC-MS analysis showed that the removal efficiency of aureomycin, roxithromycin and norfloxacin were all 100% and the removal efficiency of sulfadimidine also reached 99.9%. These results indicated that antibiotics displayed significantly inhibitions for electricity performance but improved the quality of water simultaneously.

Highly-stable and efficient photocatalytic fuel cell based on an epitaxial TiO2/WO3/W nanothorn photoanode and enhanced radical reactions for simultaneous electricity production and wastewater treatment

Organic wastewater is a potential fuel because organic pollutants are rich in chemical energy. In view of the effluent treatment and simultaneous energy recovery, we proposed a highly efficient photocatalytic fuel cell (PFC) based on a novel, extremely stable and long-lived epitaxial WO3 nanorod/TiO2 nanothorn array (TiO2/WO3/W) photoanode. Owing to the epitaxial TiO2 overlayer, which enhanced the separation and transfer of photogenerated carriers, and the inherent atomic-level protection for the photoanode from corrosion, the PFC showed improved performance in both energy output and wastewater treatment in comparison with a PFC based on a pristine WO3 photoanode. Furthermore, a small amount of ferrous ions was added into the substrate solution to boost the charge transfer and the generation of hydroxyl radicals by introducing the radical reactions from the limited electrodes’ surfaces into the whole aqueous system based on an electron-Fenton-like process. This radical-enhanced PFC (e-PFC) showed a high and stable conversion performance of organics into electricity: 0.761 V for open-circuit voltage, 3734 mA m−2 for short-circuit current density, and 563 mW m−2 for maximum power output; a removal ratio of 96% for degrading atrazine; and it maintained high-performance after 20 uses. It can be also successfully employed to generate electricity power and simultaneously degrade a large variety of refractory water pollutants. This work demonstrated the importance of interface design and system-level integration of high-performance nanomaterials on fabricating highly efficient PEC for possibly practical wastewater recycling.