期刊
RENEWABLE ENERGY
卷 176, 期 -, 页码 388-401出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2021.05.088
关键词
Solar energy; Hydrogen; Wastewater treatment; Desulfurization; Sulfide; Sulfate
资金
- National Natural Science Foundation of China [21808030, 51704076]
- Nature Science Foundation of Heilongjiang Province [QC2018009, E2018014]
- China Postdoctoral Science Foundation [2018M641803]
- Heilongjiang Postdoctoral Fund [LBHZ18042]
- University NursingProgram for Young Scholars with Creative Talents in Heilongjiang Province [UNPYSCT2018044]
- National Nature Science Foundation of China (NSFC)
This study focuses on the intersection of solar energy, wastewater treatment, and hydrogen production, utilizing a strategy of solar thermo-assisted and electron-donor alternative for efficient hydrogen production and effective wastewater treatment. The experiments showed that solar thermal utilization and sulfide donors were dominant factors for achieving high efficiencies in hydrogen production and wastewater treatment. The system demonstrated a sustainable technology that can simultaneously achieve highly efficient hydrogen production and effective water treatment.
An alternative technology has been sought for highly efficient and sustainable hydrogen production and wastewater treatment worldwide. This paper is focused on the intersection of solar energy, wastewater treatment and hydrogen production. The solar thermo-assisted and electron-donor alternative strategy was conducted for water-splitting redox chemistry to target highly efficient hydrogen production and effective wastewater treatment. The thermodynamic calculation displays that the solar thermal application and shuttle sulfide electron donor alternative are favorable for the hydrogen production and sulfide-to-sulfate oxidation by the falling trend in the potential (from 1.5V to 0.6V). The curves revealed that high current peaks in the low potential range were dominated by the thermal-assisted process and the alternative of the oxidation half-reaction. The experiments illustrated that solar thermal utilization and sulfide donors were dominant factors for the high efficiencies. Under the outdoor sunlight, the high hydrogen production rate and sulfide conversion efficiency were experimentally achieved at rates of 0.25 mL/h H-2 and 93% sulfide-to-sulfate oxidation, reasonably more than that of the direct electrochemical water splitting to hydrogen (nearly no evolution) under the same applied bias (<1.2V). The system realized that one sustainable technology conducts simultaneously both highly efficient hydrogen production and highly effective water treatment. (C) 2021 Elsevier Ltd. All rights reserved.
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