Phosphate Ion Removal from Synthetic and Real Wastewater Using MnFe2O4 Nanoparticles: A Reusable Adsorbent
Widodo Brontowiyono, Indrajit Patra, Shaymaa Abed Hussein, Alimuddin Alimuddin, Ahmed B. Mahdi, Samar Emad Izzat, Dhuha Mohsin Al-Dhalemi, Ahmed Kareem Obaid Aldulaim, Rosario Mireya Romero‐Parra, Luis Andrés Barboza Arenas, Yasser Fakri Mustafa
Abstract
The purpose of this study was to eliminate phosphate (P) from wastewater using MnFe2O4 nanoparticles. BET, TGA/DTG, FTIR, SEM, TEM, VSM, XRD and EDX/Map analyses were used to determine the MnFe2O4 surface properties. The specific surface area of the adsorbent was 196.56 m2/g and VSM analysis showed that the adsorbent has a ferromagnetic property. The maximum P sorption efficiency using MnFe2O4 (98.52%) was achieved at pH 6, temperature of 55 °C, P concentration of 10 mg/L, time of 60 min, and sorbent dosage of 2.5 g/L, which is a significant value. Also, the thermodynamic study indicated that the P sorption process is spontaneous and endothermic. Moreover, the utmost sorption capacity of P using MnFe2O4 was 39.48 mg/g. Besides, MnFe2O4 can be used for up to 6 reuse cycles with high sorption efficiency (>91%). Also, MnFe2O4 was able to remove phosphate, COD, and BOD5 from municipal wastewater with considerable removal efficiencies of 82.7%, 75.8%, and 77.3%, respectively.