Abstract

Nanoscale zero-valent iron (ZVI) was synthesized in the laboratory for treatment of textile wastewater in terms
of color and chemical oxygen demand (COD) removal. The nano ZVI was synthesized by borohydride reduction
method. The synthesized nanoscale ZVI particles were characterized by scanning electron microscope and
particle size analyzer. Batch studies were carried under varied conditions of pH, dosage and contact time. COD
was reduced to 85% from initial concentration of 9,600 mg/L and color reduced to 55% from initial absorbance
value of 0.6596 at 655 nmat a pH of 2.48 at 150 min of contact time and an adsorbent dosage of 1.5 g. Color
removal increased with a decrease in pH.