Research and manufacture of high purity γ-Al2O3, applied as an adsorbent to treat Rhodamine B pigment
Abstract
In the present study, γ-Al2O3 was fabricated from Tan Rai alumina hydroxide by some following steps: purifying alumina hydroxitde by HCl solution 5% to remove impurities, dissolving alumina hydroxitde by HCl 25% to obtain AlCl3 solution and then react AlCl3 with (NH4)2CO3 to get AACH, decomposition of AACH at 500oC to produce γ-Al2O3. After that, Sodium dodecyl sulfate (SDS) was used to modify γ-Al2O3 surface to increased the surface area. The material will be used to removal Rhodamine B from waste water.
The study shown that the modified γ-Al2O3 has a large specific surface area. The Rhodamine B in waste water can be completely treated by modified γ-Al2O3 at pH = 7, adsorption time 20 minutes, Rhodamine B concentration = 10 ppm with the amount of adsorbent used is 5 mg/mL.
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DOI: https://doi.org/10.51316/jca.2023.037
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