On the other hand, the HA removal was lower than the
control experiments, when CO3
2 and bentonite were added to the
HA solution.
Other researchers have also reported on the similar
results regarding the presence of turbidity-contributing materials
(kaolin) and the interaction or association of HA with Mg2+ and Ca2
+ ions which can enhance the removal of HA by PAC through
coagulation process [28,36,37].