Spatial redox changes in a BTEX degradation experiment in laboratory

Author

Yan Su ; Yong-sheng Zhao ; Rui Zhou ; He Sheng ; Xiao-lan Ma ; Xiao Wang

Author_Institution

Key Lab. of Groundwater Resources & Environ., Jilin Univ., Changchun, China

Volume

1

fYear

2011

Firstpage

242

Lastpage

245

Abstract

In this paper, the spatial changes of BTEX and redox indicators were studied using a column experiment in laboratory. The spatial variation of concentration of BTEX components in groundwater was exhibited under the different redox conditions. According to different redox indicators, a clear division occurred reflecting the BTEX degradation process in the simulated column, including oxygen reduction zone, nitrate reduction zone, iron reduction zone and sulfate reduction zone and they present in 80-98cm, 60-80cm, 35-60cm and 30-50cm apart from the contaminated source respectively. At the bottom of the column, the methane zone was formed in 0-30cm because of the decreasing of HCO3-.

Keywords

geochemistry; groundwater; oxidation; reduction (chemical); BTEX degradation experiment; column experiment; groundwater; iron reduction zone; methane zone; nitrate reduction zone; oxygen reduction zone; spatial redox changes; sulfate reduction zone; Attenuation; Biomedical monitoring; Carbon dioxide; Iron; Microorganisms; Water pollution; BTEX; groundwater; natural attenuation; redox condition;

fLanguage

English

Publisher

ieee

Conference_Titel

Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on

Conference_Location

Xi´an

Print_ISBN

978-1-61284-339-1

Type

conf

DOI

10.1109/ISWREP.2011.5892990

Filename

5892990