1. Overcoming barriers for nitrate electrochemical reduction: By-passing water hardness
- Author
-
Aksana Atrashkevich, Ana S. Fajardo, Paul Westerhoff, W. Shane Walker, Carlos M. Sánchez-Sánchez, and Sergi Garcia-Segura
- Subjects
Osmosis ,Minerals ,Environmental Engineering ,Nitrates ,Magnesium Hydroxide ,Nitrogen ,Ecological Modeling ,Pollution ,Water Purification ,Calcium Carbonate ,Hardness ,Tin ,Magnesium ,Calcium ,Waste Management and Disposal ,Water Science and Technology ,Civil and Structural Engineering - Abstract
Water matrix composition impacts water treatment performance. However, matrix composition impacts have rarely been studied for electrochemical water treatment processes, and the correlation between the composition and the treatment efficiency is lacking. This work evaluated the electrochemical reduction of nitrate (ERN) using different complex water matrices: groundwater, brackish water, and reverse osmosis (RO) concentrate/brine. The ERN was conducted using a tin (Sn) cathode because of the high selectivity towards nitrogen evolution reported for Sn electrocatalysts. The co-existence of calcium (Ca more...
- Published
- 2022