Magnetically synthesized MnFe2O4 nanoparticles as an effective adsorbent for lead ions removal from an aqueous solution

Abstract

The adsorption behavior of lead(II) using a new magnetic adsorbent is investigated. The facile synthesis of MnFe2O4 was carried out using the co-precipitation method. The different parameters that affected the adsorption process were investigated such as contact time, metal ion concentration, pH, temperature, and the adsorbent dosage. The maximum lead(II) sorption capacity was found to be 75.75 (mg/g) and obtained using 1 g/L MnFe2O4 when pH equals 5.3, a temperature of 25 °C, and contact time as 60 min. The adsorption isotherm study indicated that the Langmuir model was the best model that described the adsorption process using 1 g/L MnFe2O4. Based on the values of correlation coefficient data (R2), the kinetic adsorption parameters were well defined by the second-order kinetic model. Furthermore, the temperature effect findings have been confirmed that the removal of lead ions was endothermic. The desorption efficiency reached more than 88% when used 0.01 M NaOH as an eluent.

Enhanced removal of Ce(iii) and Sr(ii) ions from aqueous solution using ultrasonication-assisted sawdust-TiO2 sorbent

“…Three different kinetic models, including pseudo-first order, pseudo-second order, and intraparticle diffusion, were used in linear and non-linear forms to study the dynamic sono-sorption of Sr( ii ) and Ce( iii ) metal ions on the ST sorbent. The linearized form of the pseudo-first order, 104 pseudo-second order, 105,106 and intraparticle diffusion 107 kinetic model equations are expressed as eqn (7)–(9), respectively. q t = K dif t 0.5 + C where q e and q t are the quantity of metal ions in mg g −1 adsorbed on ST at equilibrium time and at any time t (min), respectively. K 1 (min −1 ) and K 2 (mg mg −1 min −1 ) are the rate constant of the pseudo-first order and pseudo-second order kinetic models, respectively.…”

“…Three different kinetic models, including pseudo-first order, pseudo-second order, and intraparticle diffusion, were used in linear and non-linear forms to study the dynamic sonosorption of Sr(II) and Ce(III) metal ions on the ST sorbent. The linearized form of the pseudo-first order, 104 pseudo-second Environmental Science: Water Research & Technology Paper order, 105,106 and intraparticle diffusion 107 kinetic model equations are expressed as eqn ( 7)-( 9), respectively.…”

Hấp phụ crom (III) trong dung dịch nước bằng các hạt nano mangan ferrite

“…Do đó, các hạt nano MnFe2O4 có thể là một vật liệu đầy hứa hẹn được sử dụng trong hấp phụ. Bởi các hạt nano MnFe2O4 khi đã nạp các ion Cr (III) có thể được tái sinh, sau lần tái sinh thứ tư, nó có thể được làm khô và sử dụng trong xây dựng, xử lý an toàn và tiết kiệm [41].…”

Calcium Ferrite Nanoparticles: A Simple Synthesis Approach for the Effective Disposal of Congo Red Dye from Aqueous Environments

“…Furthermore, the high stability and recyclability of metal oxide nanoparticles make them environmentally friendly and economically viable options for wastewater treatment processes, contributing significantly to the removal of organic dyes from contaminated water sources. Metal ferrite nanoparticles, such as MnFe 2 O 4 , ZnFe 2 O 4 , CoFe 2 O 4 , and MgFe 2 O 4 , have garnered substantial attention for their utility as effective adsorbents in the disposal of heavy metals and dyes from aqueous environments [21][22][23][24][25][26][27][28][29]. Metal ferrite adsorbents are typically favored because of their compact dimensions, high surface area, and substantial pore volume, which facilitate a quicker disposal process and enhance disposal capacity when contrasted with traditional adsorbents.…”