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Enhanced  nitrate  reduction  of  nanoscale  zero  valent  iron  (nZVI)  by   Cu  prepared  by impregnation method was studied in this work. Using a full factorial design, the performance of nZVI  with  and  without  Cu  on  surface  in  acidic  and  neutral  conditions  was  investigated.  Static batch  reactor  was  selected  in  this  study  to  investigate  the  effects  of  the  independent  variables such  as  catalysts  (nZVI  with  and  without  Cu),  initial  pH  of  solutions  (3,  7),  and  reaction  times (10, 30 min). The results found that nitrate removal over Cu-nZVI was greater than that of nZVI by about 37% and 36% at pH 3 and pH 7 for 30 min, respectively. Both catalysts were effective in  removing  nitrate  under  acidic  conditions  (pH  3).  Thus,  this  study  concludes  that  nZVI  can enhance  the  performance  by  Cu  in  nitrate  removal.  Moreover,  acidic  conditions  were  more effective than neutral conditions in removing nitrate.

Removal of Nitrate by Bimetallic Copper-nanoscale Zero-valent Iron (Cu-nZVI): Using 2k Full Factorial Design