Innovative supramolecular magnetic magnesium-aluminum LDHs-decorated-carboxymethylcellulose for doxorubicin uptake from aqueous solutions

Doxorubicin drug (DOX) is well-characterized by its high chemical stability with minimum ability to biodegrade. It has been recently characterized as a pollutant in wastewaters. Therefore, the current investigation is devoted to explore the potential recovery of DOX pollutant onto a newly assembled nanocomposite from the combination of carboxymethylcellulose and magnetite with magnesium/aluminum double layered hydroxide (CMC@Fe₃O₄@MgAl-LDHs). Fe, O, C, Mg and Al elements were detected in this nanocomposite providing 44.78, 38.81, 9.12, 4.02 and 3.27 %, respectively. The implementation of CMC@Fe₃O₄@MgAl-LDHs in sportive removal of DOX was monitored under numerous impacting conditions including pH (2.0–11.0), reaction time (2–60 min), nanocomposite dosage (2–60 mg), ionic strength via NaCl (10.0–100.0 mg), DOX initial concentration (1.0–20.0 mg L⁻¹) and reaction temperature (25–60 °C). The pHpzc of CMC@Fe₃O₄@MgAl-LDHs was detected as 5.8 to favoring high adsorptive capture values of DOX near this pH condition. CMC@Fe₃O₄@MgAl-LDHs exhibited excellent stability toward regeneration for five consecutive cycles providing 90.0–96.0 %. Moreover, CMC@Fe₃O₄@MgAl-LDHs exhibited excellent removal capability of DOX from real waters up to 95.0–96.5 % (tap water), 95.5–96.1 % (wastewater) and 81.0–83.9 (sea water). Therefore, it could be concluded from the provided data that the investigated CMC@Fe₃O₄@MgAl-LDHs is a valid and promising adsorbent with lauded potential for significant implementation in DOX recovery from real wastewaters providing high capability and performance with excellent efficiency. Finally, the outcomes from this study approved and lauded the high significance of CMC@Fe₃O₄@MgAl-LDHs owing to its practical potential in real water treatment based on its high adsorption efficiency, regenerability, biodegradability.