“…In particular, ZVI is an inexpensive and moderately strong reducing agent which has been applied in the laboratory to treat various environmental pollutants, such as heavy metals (Fu et al, 2013), azo dyes (Cao et al, 1999;Nam et al, 2000;Perey et al, 2002), explosives (Koutsospyros et al, 2012;Wanaratna et al, 2006;Oh et al, 2005aOh et al, , 2005b, halogenated organic compounds (Johnson et al, 1996;Gillham and Ohannesin, 1994), highly toxic chemicals (Oh et al, 2006;Lee et al, 2009), nitroaromatics compounds (Shen et al, 2013;Devlin et al, 1998;Agrawal and Tratnyek, 1995), and nitrate (Huang et al, 1998). ZVI is commonly used as a treatment technique for toxic and refractory waste water, such as bromoamine acid waste water, coking waste water, olive mill waste water, industrial waste water, and ABS resin waste water (Fan et al, 2009;Kallel et al, 2009;Ma and Zhang, 2008;Lai et al, 2009Lai et al, , 2012.…”