CHẾ TẠO THAN HOẠT TÍNH TỪ VỎ CÂY CHÙM NGÂY VÀ ỨNG DỤNG HẤP PHỤ CHÌ TRONG MÔI TRƯỜNG NƯỚC PREPARATION OF ACTIVATED CARBON FROM

Tóm tắt

Activated carbon was produced from Moringa Oleifera seed pod by denaturing of H3PO4 and Na2CO3
(M1), for adsorption of lead (Pb) from aqueous solution. Some physiochemical characteristics of M1
were studied by Scanning Electron Microscope (SEM) and Energy-dispersive X-ray spectroscopy
(EDS) techniques. The effect of pH (3 - 7), adsorption time (30 - 180 minutes) and the amount of
adsorbent (0.025 - 0.2 grams) on Pb adsorption effeciency of M1 were also studied. The results showed
that the time to reach the adsorption equilibrium and the pH value, the optimal weight of M1 material
for the adsorption process of 50 mL of Pb (II) solution, the 63.52 mg / L concentration was 90 minutes,
7 and 0.125grams, respectively. The maximum monolayer adsorption capacity of M1 was 78.13 mg/g,
which means M1 is able to be act as a promissing adsorbent for removing Pb from aqueous solutions.