Treatment of aqueous nitrate by zero valent iron powder in the presence of CO2 Bubbling

Document Type

Article

Publication Date

1-1-2004

Abstract

This paper investigates a process for the removal of nitrate from ground water by combination of Fe0 and CO2 bubbling. The bubbling of CO2 effectively creates an acidic environment favorable to Fe0 corrosion, which results in nitrate reduction. In 10 min, the solution pH dropped to 3.2 with CO2 inflow rate of 500 mL/min. In the presence of Fe0 (2 g/L), the CO2 bubbling (500 mL/min) induced conversion of nitrate-N (∼7 mg/L) by 85% in 40 min. In addition, the end product in the reaction mixture was ammonium, which accounts for 90% to 104% of nitrate conversion with the presence of various iron dosages (0.5 to 2.0 g/L). Though the formation of ammonium is a drawback, the ammonium was eliminated from aqueous phase by a followup treatment of settling (30 min) and air aeration (50 min).

Identifier

11144351710 (Scopus)

Publication Title

Ground Water Monitoring and Remediation

External Full Text Location

https://doi.org/10.1111/j.1745-6592.2004.tb01305.x

ISSN

10693629

First Page

82

Last Page

87

Issue

4

Volume

24

This document is currently not available here.

Share

COinS