Year: 2026
Type: article
Abstract: Perlite was used for monocrotophos (MCP) adsorption from waste effluents.The surface and functional groups were characterized via spectrometric routes.The concentrations of 12, 20, 28, and 36 µg/mL were prepared, and equilibrium was reached in 120 minutes for the 12 µg/mL MCP-containing sample.The equilibrium took place in 220 min for the remaining samples.Langmuir, Freundlich, and Jovanovich were the isotherms used for explaining the adsorption.The monolayer capacity was 78.2 mg/g at 50°C.The n constant of the Freundlich isotherm (approximately 1.29 at 50°C) supported chemisorption (n > 1).Pseudo-first-and pseudo-second-order mechanisms were applied to the system.Comparing the experimental and calculated capacity deviations of the first-and second-order models, the first-order model showed better average values, with 0.1467 instead of 0.2224.The pseudo-first-order model governed the adsorption reaction, and the inner-pore adsorption mechanism (Weber-Morris kinetic model) was also investigated.The Weber-Morris constant was 0.33 mg/g.min1/2 at 50°C.The film and pore diffusion behavior were explained.The adsorption process was also analyzed.The Gibbs energy was calculated as -2276 J/mol.It was an indicator of the feasible adsorption nature.
Source: Cureus Journal of Engineering.
Authors: Jale Gülen, Sevda Karademir, Ömer Karpuz
Institutions: Gümüşhane University, Yıldız Technical University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid:
OpenAlex ID: W7221629783