Modified Fenton Degradation of 2,4-dinitrotoluene in Soil Slurries in the Presence of Lead
This study investigates the effects of lead (Pb) on 2,4-dinitrotoluene (2,4-DNT) degradation when modified Fenton reactions are used to remediate soils contaminated with both Pb and 2,4-DNT.At all H2O2 concentrations,the Pb sorption after 24 h reaction was >95%; but a significantly greater amount of Pb was sorbed at 0.01 M-0.2 M H2O2 (>99%) when compared with the Pb sorption at higher H2O2 concentrations.This indicates Pb mobilization due to the Fentor reactions.The 2,4-DNT degradation increased with increasing H2O2 concentrations from 0.01 M to 1 M,but no further increase was observed with further increase in the H2O2 concentration.This could be attributed to the increased 2,4-DNT desorption due to the reductive moieties produced by the Fenton reactions at higher H2O2 concentrations.At 0.01 M and 0.05 M H2O2,the 2,4-DNT degradation was similar in the presence and the absence of Pb; however,it was lower in the presence of Pb at higher H2O2 concentrations (≥0.2 M).This can be explained by the stable complex formation between Pb and soil organic matter (SOM),which could likely reduce the loss of SOM due to Fenton reactions,hence the 2,4-DNT desorption.Thus,Pb removal prior to the application of Fenton reactions is recommended when remediating 2,4-DNT from soils contaminated with both Pb and 2,4-DNT.
Fenton reaction 2,4-dinitrotoluene Lead Nitroaromatic compounds Hydrogen peroxide
Eun Hea Jho Jaewoong Jung Kyoungphile Nam
Department of Civil and Environmental Engineering,Seoul National University,Seoul,South Korea
国际会议
Conference on Environmental Pollution and Public Health (2012年环境污染与大众健康学术会议(CEPPH2012))
上海
英文
123-125
2012-08-09（万方平台首次上网日期，不代表论文的发表时间）