2.3. Application of rice hull ash in water purification
A laboratory-scale filtration tests was conducted to study the
effect of the ash samples on the control of TDS and pH of clarified
treated water as well as the performance of the ash samples in turbidity
removal from water. The filtration was carried out on a varied
ash layers (between 5 and 24 g RHA). The pH and turbidity of
water were determined using pH and turbidity meters, respectively,
while the TDS was gravitationally determined.