Title :
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
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;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5892990
