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- W3215952286 endingPage "117889" @default.
- W3215952286 startingPage "117889" @default.
- W3215952286 abstract "The pollution of nitrate (NO3-) in groundwater has become an environmental problem of general concern and requires immediate remediation because of adverse human and ecological impacts. NO3- removal from groundwater is conducted mainly by chemical, biological, and coupled methods, with the removal efficiency of NO3- considered the sole performance indicator. However, in addition to the harmless form of N2, the reduced NO3- could be transformed into other intermediates, such as nitrite (NO2-), nitrous oxide (N2O), and ammonia (NH4+), which may have direct or indirect negative impacts on the environment. Therefore, increasing N2 selectivity is a significant challenge in reducing NO3- in groundwater, which seriously impedes the large-scale implementation of available remediation technologies. In this work, we comprehensively overview the most recent advances in N2 selectivity regarding the understanding of emerging groundwater NO3- removal technologies. Mechanisms of by-product production and strategies to enhance the selective reduction of NO3- to N2 are discussed in detail. Furthermore, we proposed topics for further research and hope that the total environmental impacts of remediation schemes should be evaluated comprehensively by quantifying all potential intermediate products, and promising strategies should be further developed to enhance N2 selectivity, to improve the feasibility of related technologies in actual remediation." @default.
- W3215952286 created "2021-12-06" @default.
- W3215952286 creator A5029868667 @default.
- W3215952286 creator A5057116706 @default.
- W3215952286 creator A5057490932 @default.
- W3215952286 creator A5062204091 @default.
- W3215952286 creator A5081401868 @default.
- W3215952286 date "2022-02-01" @default.
- W3215952286 modified "2023-10-16" @default.
- W3215952286 title "A critical review of existing mechanisms and strategies to enhance N2 selectivity in groundwater nitrate reduction" @default.
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