KHẢO SÁT KHẢ NĂNG HẤP PHỤ XANH METYLEN CỦA SÉT HỮU CƠ ĐIỀU CHẾ TỪ BENTONIT ẤN ĐỘ VỚI PROPYLTRIPHENYLPHOTPHONI BROMUA

Tóm tắt

Organoclays synthesized from Indian bentonite (bent-A) and propyltriphenylphosphonium bromide
(PTPB) according to [2] has been studied for its effect on methylene blue adsorption capacity
compared to bent-A due to some of its factors. The results show that, under the survey conditions: time
to reach adsorption equilibrium is 90 minutes (bent-A) and 60 minutes (organoclays); The amount of
adsorbent which is 0.05 grams gives the largest adsorption capacity and stable adsorption
performance. The methylene blue adsorption process of bent-A and modulated organoclays described
by the Langmuir adsorption isothermal model, which has determined that the maximum absorption
capacity of bent-A and organoclays is 28.09 mg/g and 384.60 mg/g respectively and Langmuir constant
is: 0.012 and 0.021, respectively. Therefor synthetic organoclays has much better ability to adsorb
methylene blue than bent-A.
Keywords: Organoclays, bentonite, propyltriphenylphosphonium bromide,adsorption, methylene blue.