Work

Sorption of carbamazepine and naproxen in fixed-bed columns with HDTMA-modified zeolite

Year: 2025

Type: article

Abstract: This study evaluated the sorption performance of HDTMA-modified clinoptilolite in fixed-bed columns for naproxen (NPX) and carbamazepine (CBZ) removal. Surface characterization (FTIR, SEM/EDS) confirmed surfactant anchoring and the formation of hydrophobic domains. Under optimal conditions (bed height = 15 cm, flow = 0.5 mL min⁻¹), 95 % NPX and 36 % CBZ removal were achieved, while a 1:2 NPX:CBZ mixture exhibited a cooperative π–π interaction enhancing CBZ removal up to 82 %. Breakthrough data were fitted to Thomas, Yoon–Nelson, and Bohart–Adams models, showing high correlation (R² > 0.95). The process required less than 0.1 kWh m⁻³ , demonstrating low energy demand and carbon footprint compared with advanced oxidation processes. These findings highlight the potential of HDTMA-zeolite as an affordable and sustainable adsorbent for continuous pharmaceutical removal.

Source: Cleaner Water

DOI: 10.1016/j.clwat.2025.100187

Authors: María Eugenia Becerril Ortiz, Jorge Javier Ramirez García, Armando Ramírez Serrano

Institution: Universidad Autónoma del Estado de México

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Clean water and sanitation

Open Access status: gold

Estimated APC paid: $1,230