In this study, chemical oxidative polymerization method was
used to prepare polypyrrole/rice husk ash nanocomposites by
coating the rice husk ash substrate with pyrrole and their ability
in the removal of heavy metals, COD and anions from textile
wastewater was investigated. The nanocomposite of
polymer showed considerable potential in the removal of
heavy metals and anions from textile wastewater. RHA has
low efficiency in the removal of anions and COD, but its performance
to remove metals is considerable, and PPy has
noticeable efficiency in the removal of metals, anions and
COD. Nanocomposites regeneration is performed using
NaOH, deionized water and H2SO4. After regeneration,
nanocomposites were used for wastewater treatment as there
is a little difference between regenerated and fresh composites
in the removal efficiency.