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Đỗ Thủy Tiên, Nguyễn Thế Duyến(1), Nguyễn Thị Huyền, Vũ Thị Thanh Huyền, Văn Hữu Tập

NGHIÊN CỨU XỬ LÝ Cr(VI) VÀ Ni(II) TRÊN MÔ HÌNH HẤP PHỤ DẠNG CỘT BẰNG VẬT LIỆU TỔ HỢP MnFe2O4/BIOCHAR TỪ VỎ QUẢ CÀ PHÊ

RESEARCH FOR Cr(VI) AND Ni(II) TREATMENT ON COLUMNAR ADSORPTION MODELS USING MnFe2O4/BIOCHAR COMPOSITES FROM COFFEE HUSK

Tạp chí Phân tích Hóa, Lý và Sinh học

2022

4

127

In this study, the composite materials were synthesized by mixed ferromagnetic particles MnFe2O4 and biochar from coffee husk with the ratio 1:2.5 (g:g). The obtained products were studied to find down the best technology in columnar adsorption progress by studying the flow (2 ÷ 4 ml/min), adsorbent material mass (1 ÷ 3 g) and the initial concentration of Cr(VI) and Ni(II). The columnar adsorption model results shows that the adsorption capacity of Cr(VI) on the adsorption column is higher than that of Ni(II). Thus, when simultaneously adsorbed both Cr(VI) and Ni(II) on the columnar adsorption model, there was a competition between Cr(VI) in the form of anion and Ni2+ cation. Besides, the adsorption capacity of Cr(VI) and Ni(II) of composite materials under columnar adsorption condition was lower than that of static adsorption. This loss is due to the influence of the flow rate, the influence of the adsorbent column height.

In this study, the composite materials were synthesized by mixed ferromagnetic particles MnFe2O4 and biochar from coffee husk with the ratio 1:2.5 (g:g). The obtained products were studied to find down the best technology in columnar adsorption progress by studying the flow (2 ÷ 4 ml/min), adsorbent material mass (1 ÷ 3 g) and the initial concentration of Cr(VI) and Ni(II). The columnar adsorption model results shows that the adsorption capacity of Cr(VI) on the adsorption column is higher than that of Ni(II). Thus, when simultaneously adsorbed both Cr(VI) and Ni(II) on the columnar adsorption model, there was a competition between Cr(VI) in the form of anion and Ni2+ cation. Besides, the adsorption capacity of Cr(VI) and Ni(II) of composite materials under columnar adsorption condition was lower than that of static adsorption. This loss is due to the influence of the flow rate, the influence of the adsorbent column height.

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