Effects of amount of adsorbent
Figure 1 shows the percentage removal of waste from textile
wastewater sample at pH=7 for adsorbent dosage from 0.5 g to 2.5 g.
This experiment was carried out at room temperature and the contact
time was 90 minutes. The result explained that the waste removal
percentage was very low at beginning. Then percentage increased with
increasing amount of dosage. This happened because initially the active
site of adsorbent could not effectively contact with adsorbate. When
the adsorbent amount was higher, the active portion was available
for removing almost all the waste from sample wastewater. And the
figure shows that the optimum amount of dose of chitin is 2 g at which
maximum amount of dyes were removed. The maximum removal
percentage is almost 96‐97%. Above 2 g of chitin dose, the proper
contact did not happened, so the removal percentage decreased