All experiments were carried out with 100 ml vial glass as a batch reactor. Cocoanuts husks known as hydrophobic.
In order to enhance the removal efficiency, ethanol was added as a surfactant (0.1 - 2 ml). Stock solutions
for both MB and RhB were prepared by dissolving high purity fine powder of Mb and RhB so that 2.5
μg/ml was obtained as a working solution. Ammonium ions were prepared by dissolving anhydrous ammonium
chloride so that stock solution of 100 μg/ml was obtained. Working solution was prepared by diluting the stock
solution with deionized water as required. Adsorption experiment was carried out by weighing the required
amount of the sintering products (10 - 300 mg) prepared at different temperatures (100˚C - 400˚C) with different
sintering time (30 - 180 min). Stirring time was adjusted to be between 5 & 75 min. Desired pH (4.2 - 9.7) was
adjusted by using NaOH, and/or HCl solutions. At different intervals samples were collected after treatment, filtered
with 0.45 μm Advantec membrane filter then analyzed.