Spray scrubbing of the nitrogen oxides into NaClO2 solution under acidic conditions

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The operating conditions of this study were closed to the typical operating conditions of flue gas desulfurization system in the coal-fired power plant. The objective of this study was to investigate the absorption performance of lean NO in an aqueous solution of acidic sodium chlorite using a bench-scale spraying column. The NO coversion and NOx removal efficiency were increasing with the increasing NO concentration, retention time, sodium chlorite concentration, operating temperature, and decreasing initial pH of solution. As the sodium chlorite concentration were higher than 0.4 M, the NO conversion and NOx removal efficiency were 100% and 80%, respectively. The NO conversion and NOx removal efficiency under initial pH 4-7 were higher than that of initial pH > 7. It meant that this process might be suitable to combining with traditional wet flue gas desulfurization system. As the NO2/NOx ratio in the effluent gas was closed to 0.5, it might be suitable to be absorbed in the second scrubbing column operated under alkaline condition.

Original languageEnglish
Pages (from-to)403-414
Number of pages12
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume36
Issue number4
DOIs
Publication statusPublished - 2001 Jun 23

All Science Journal Classification (ASJC) codes

  • Environmental Engineering

Fingerprint Dive into the research topics of 'Spray scrubbing of the nitrogen oxides into NaClO<sub>2</sub> solution under acidic conditions'. Together they form a unique fingerprint.

  • Cite this