Abiotic reduction of nitroaromatic compounds by Fe(II) associated with iron oxides and humic acid

作者：Luan Fubo; Xie Li^*; Li Jun; Zhou Qi

来源：Chemosphere, 2013, 91(7): 1035-1041.

DOI：10.1016/j.chemosphere.2013.01.070

• Abiotic reduction
• Nitroaromatic compounds
• Fe(II)
• Iron oxides and humic acid

Experiments were conducted to examine the reduction of nitroaromatic compounds (NACs) by Fe(II) associated with iron oxides (goethite, hematite and magnetite) and humic acid. The reduction rate of nitrobenzene decreased in the order of Fe(II) associated with magnetite > Fe(II) associated with goethite > Fe(II) associated with hematite. We proposed a four-step model (adsorption, electron transfer to conduction band, electron transfer to nitrobenzene and electron transfer to crystal lattice) for nitrobenzene reduction by Fe(II) associated with iron oxides. Fe(II)-humic acid complexes did not present reduction capability of nitrobenzene. Furthermore, Humic acid significantly inhibited nitrobenzene reduction by Fe(II) associated with iron oxides. The inhibitory effect of humic acid toward the reduction of nitrobenzene decreased in the order of magnetite > goethite > hematite.

• 出版日期2013-5
• 单位同济大学