Removal of Nitroaromatics from Synthetic Wastewater Using Two-Step Zero-Valent Iron reduction and Peroxidase-Catalyzed Oxidative Polymerization

摘要

Degradation of nitroaromatics, which are significant environmental pollutants, is difficult to achieve. Azero-valent iron reduction of nitorgaromatics coupled with peroxidase-catalyzed capture of the resulting anilines as a two-step strategy for removing nitroaromatics form wastewater and process water is investigated here. The concentration range of nitroaromatics studied was that which would be present in industrial wastewater streams. Studies were done in continuous-flow columns. The enzymatic treatment following zero-valent iron reduction was carried out in a plug-flow reactor using a crude preparation of the enzyme soybean perioxidase extracted form soybean hulls.