Methylene Blue Adsorption on Modified Biochar with Magnetic Nanoparticles and Humic Acid Coating

Sabrpisheh, Zahra; Ghasemian Lemraski, Ensieh; Abbasi, Zahra; Tahmasebi, Zohreh

doi:10.22036/pcr.2024.422704.2441

Methylene Blue Adsorption on Modified Biochar with Magnetic Nanoparticles and Humic Acid Coating

Document Type : Regular Article

Authors

Zahra Sabrpisheh

Ensieh Ghasemian Lemraski

Zahra Abbasi

Zohreh Tahmasebi

Department of Chemistry, Faculty of Science, Ilam University, P. O. Box: 69315516, Ilam, Iran

https://doi.org/10.22036/pcr.2024.422704.2441

Abstract

In this project, we modified the biochar adsorbent using iron oxide nanoparticles coated with humic acid to remove methylene blue, a cationic dye. The prepared adsorbent was characterized using various analytical techniques, including Fourier-transform infrared spectroscopy (FT-IR), Brunauer-Emmett-Teller surface area measurement (BET), scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermal gravimetric analysis (TGA). The magnetic properties were determined using a vibrating sample magnetometer (VSM). Surface adsorption experiments were conducted to investigate the factors influencing the surface adsorption of methylene blue by the prepared biochar adsorbent in aqueous environments. Various parameters such as solution pH, contact time, adsorbent dosage, and initial dye concentration, were examined. The results of surface adsorption analysis at different concentration revealed that the adsorption behavior on the adsorbent could be accurately described by the Langmuir isotherm and the elovich kinetic equation. The isotherm parameters for surface adsorption were also determined.

Graphical Abstract