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

Tóm tắt

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.