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Nguyễn Nho Dũng, Nguyễn Thanh Bình, Trần Mai Giang, Nguyễn Mậu Thành(1)

TỔNG HỢP MnFe2O4 CÓ KÍCH THƯỚC NANO VÀ KHẢ NĂNG LOẠI BỎ Pb 2+ RA KHỎI DUNG DỊCH NƯỚC

SYNTHESIS OF MnFe2O4 NANOPARTICLES AND THE ABILITY TO REMOVE Pb2+ FROM AQUEOUS SOLUTION

Tạp chí Phân tích Hóa, Lý và Sinh học

2023

4

07

In the present paper, nanosized manganese ferrite material was synthesized by the hydrothermal method. The size and microstructure of MnFe2O4 were analyzed based on X-ray diffraction (XRD), scanning electron microscopy (SEM). The nitrogen adsorption-desorption was used for determination of surface area (Brunauer – Emmett – Teller (BET)) and porosity of the fabricated material. The adsorption behavior of Pb2+ using a new magnetic adsorbent was investigated. The adsorption characteristic and Pb2+ removal efficiency of the adsorbent were determined by investigating the influence of operating variables such as dosage of manganese ferrite. The maximum Pb2+sorption capacity was found to be 7.32 (mg/g) and obtained using 0.5 g/L MnFe2O4 at pH 5, temperature of 25 °C, and contact time as 24 h. The Langmuir and Freundlich models were used to fit the experimental data and these showed good correlations.

In the present paper, nanosized manganese ferrite material was synthesized by the hydrothermal method. The size and microstructure of MnFe2O4 were analyzed based on X-ray diffraction (XRD), scanning electron microscopy (SEM). The nitrogen adsorption-desorption was used for determination of surface area (Brunauer – Emmett – Teller (BET)) and porosity of the fabricated material. The adsorption behavior of Pb2+ using a new magnetic adsorbent was investigated. The adsorption characteristic and Pb2+ removal efficiency of the adsorbent were determined by investigating the influence of operating variables such as dosage of manganese ferrite. The maximum Pb2+sorption capacity was found to be 7.32 (mg/g) and obtained using 0.5 g/L MnFe2O4 at pH 5, temperature of 25 °C, and contact time as 24 h. The Langmuir and Freundlich models were used to fit the experimental data and these showed good correlations.

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