Hydrogen production by photovoltaic-electrolysis using aqueous waste from ornamental stones industries

Marques, Fabielle Castelan; Silva, Júlio César M.; Libardi, Cícero P.; Carvalho, Rael R. de; Sequine, Gabriel F.; Valane, Gabriel Mendonça

doi:10.1016/j.renene.2020.01.156

Cited by 21 publications

(8 citation statements)

References 24 publications

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“…For this work, an electrolytic cell was used, built using a PVC tube with a diameter of 20.0 cm, height of 21.9 cm resulting in 6.87 cm 3 of internal volume, according to ref. 19 The reactor had two 20.0 cm diameter plugs to close each end, sealed with silicone glue. In order to separate the H 2 and O 2 gas produced, the reactor had a PVC partition plate (17.0 cm high and 20.0 cm wide), to separate the two electrodes, cathode and anode, keeping the solution in contact with both gates.…”

Section: Methodsmentioning

confidence: 99%

“…For this work, an electrolytic cell was used, built using a PVC tube with a diameter of 20.0 cm, height of 21.9 cm resulting in 6.87 cm 3 of internal volume, according to ref 19 . The reactor had two 20.0 cm diameter plugs to close each end, sealed with silicone glue.…”

Section: Methodsmentioning

confidence: 99%

“…[14][15][16] Hydrogen energy storage, replacing the use of conventional batteries and photovoltaic panels coupled to an electrochemical system with alternative electrolytes, mainly pollutants, enables environmental decontamination. [17][18][19] As a result of the problems caused by AMD, its control and treatment are of great importance for inspection agencies and the mining companies themselves. It is known that its control is very difficult, so the treatments become very important and necessary for this problem.…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, some research is focused on reducing hydrogen production costs by coupling the electrochemical system to photovoltaic (PV) panels 14‐16 . Hydrogen energy storage, replacing the use of conventional batteries and photovoltaic panels coupled to an electrochemical system with alternative electrolytes, mainly pollutants, enables environmental decontamination 17‐19 . As a result of the problems caused by AMD, its control and treatment are of great importance for inspection agencies and the mining companies themselves.…”

Section: Introductionmentioning

confidence: 99%

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Acid mine drainage wastewater photoelectrolysis for hydrogen fuel generation: Preliminary results

Marques¹,

Valane²,

Buzato³

2020

Int J Energy Res

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Acid mine drainage (AMD) occurs when sulfide composite materials are exposed to oxygen gas, water, and microorganisms present in the environment. An alternative for the treatment of this residual water is the generation of hydrogen gas by electrolysis using a photovoltaic system. In this work, an electrolytic cell with 304 stainless steel electrodes was to form hydrogen gas. After 390 minutes of hydrogen generation, it was observed that the accumulated amount of H 2 was 254 mL when PV panels were used as the current source. When using AMD, hydrogen generation was 5.5 times higher compared to that using the sulfuric acid solution under the same experimental conditions. The electrolyte AMD conductivity diminished from 3850 μS cm −1 to 2960 μS cm −1. The decrease in conductivity may be related to removal of metal ions from the solution by the formation of insoluble compounds. After 390 minutes of testing, electrolysis using a PV panel resulted in a 9-fold increase in the total solid content. The reduction of iron and manganese ions in AMD samples was approximately 60% and 10%, respectively. No decrease in sulfate concentration and low pH variation were observed.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Acid mine drainage wastewater photoelectrolysis for hydrogen fuel generation: Preliminary results

Marques¹,

Valane²,

Buzato³

2020

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…Practically, however, the threshold voltage for the water electrolysis is considerably higher at 1.8-2.0 V either in alkaline or acidic electrolytes, due to the presence of ohmic losses, and the activation over-potential caused by electrode kinetics and the sluggish mass transfer at the electrode-electrolyte interfaces. [45][46][47][48] Therefore, a large amount of energy is required to split water ($4 kW h m À3 ) which is greater than the energy content of produced hydrogen ($3.5 kW h m À3 ), 49 making the whole process non-economical on an industrial scale. Other technical problems include the corrosion of the electrodes, containers and compartments; 50 and expensive catalysts required such as Pt-and Ru-based compounds.…”

Section: Challengesmentioning

confidence: 99%