We investigated NOx removal using a CO3·Mg–Al layered double hydroxide (CO3·Mg–Al LDH) and compared its NO2 removal performance against that of Mg(OH)2 and NO3·Mg–Al LDH to elucidate the nature of adsorption of NO2. The NO removal rate was lower than that for NO2 removal. The success of NO2 removal with CO3·Mg–Al LDH is attributed to the surface adsorption of NO2 on CO3·Mg–Al LDH in addition to the formation of NOx·Mg–Al LDH. We investigated its recycling in NO2 treatment by CO3·Mg–Al LDH. The results demonstrated the possibility of recycling through CO3·Mg–Al LDH generation using a Na2CO3 solution.
ASJC Scopus subject areas
- Waste Management and Disposal
- Atmospheric Science