Cost-effective photoelectrocatalytic treatment of dyes in a batch reactor equipped with solar cells

Improvement of Efficiency and Electrical Energy Consumption of AB74 Degradation Process using A Novel Cylindrical Batch Photochemical Reactor.

“…1,7,10,36 . Recombination of photogenerated electron-holes is a serious problem in the use of photocatalysts, which is the main reason of energy dissipation and reduction of the quantum yield 1,10,39,37 . It has been demonstrated, providing the proper amount of oxygen is an important factor in the process that prevents recombination of photogenerated electronholes 7,37 .…”

“…But, if this amount exceeds the optimum value, it can retard dye degradation because suspension will be impermeable toward UV radiation and will prevent illumination. Moreover, agglomeration of TiO 2 particles masks part of the active sites 7,36,[38][39][40] . ... (29) .. (30) ... (31) ...(32)…”

Synergetic photoelectrocatalytic reactors for environmental remediation: A review

“…In the specific experiment [168], the overall operating cost is about 9.42 USD/m 3 effluent, and correlates to saving 17% of the overall cost for the electrode energy if it was supplied by solar cells. Sun et al has also coated the graphite oxide on the solar cell to harvest the infrared light to generate electricity used in the photoelectrocatalytic process with similar results [171].…”

“…Recently, Mohammad et al introduced the feasibility of utilizing solar cells to produce direct current to supply electricity for the photoelectrocatalytic process [168,169]. By optimizing the experimental conditions including photocatalyst dose, initial dye concentration, pH, bias potential and electrolyte types, the removal rate of the dye could reach approximately 95% in 30 minutes.…”

Highly efficient photocatalytic treatment of mixed dyes wastewater via visible-light-driven AgI–Ag3PO4/MWCNTs

“…This release of these colored wastewaters in the ecosystem is a dramatic source of non-aesthetic pollution, eutrophication and perturbations in the aquatic life [3]. So, an effective treatment is necessary before it is discharged into water body around in case of severe pollution [4]. Many measures including physical methods (as adsorption) [5], biological methods (as biodegradation) [6] and chemical methods (as chlorination or ozonation) [7] have been studied to treat dyes wastewater.…”