Progress in the removal of pharmaceutical compounds from aqueous solution using layered double hydroxides as adsorbents: A review. Issue 6 (December 2020)

• Record Type: Journal Article
• Authors: Santamaría, L.; Vicente, M.A.; Korili, S.A.; Gil, A.
• Is Part Of: Journal of environmental chemical engineering. Volume 8:Issue 6(2020)
• Publication Date: 2020-12
• Subjects: Layered double hydroxides -- Adsorption -- Emerging contaminants -- Pharmaceutical compounds; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2020.104577
• Languages: English
• ISSNs: 2213-2929

Abstract

Graphical abstract: Highlights: Layered double hydroxides as efficient systems to clean water from emerging contaminants. Layered double hydroxides as adsorbents of antibiotics and non-steroidal anti-inflammatory drugs. Factors as the synthesis ratio Me 2+ :Me 3+, the memory effect, and the use of supports or foreign substances have been described and analyzed. Several strategies to recover the adsorbents in a simple yet effective way have also been described and analyzed. Abstract: Emerging contaminants and, among them, pharmaceutical compounds, have a significant impact on water ecosystems. Layered Double Hydroxides (LDH), being easy to synthesize and cheap materials, have recently gained attention as adsorbents in aqueous solutions. This work describes the latest research performed in the adsorption capacity of LDH towards both antibiotics and Non-Steroidal Anti-Inflammatory Drugs (NSAID) describing and analyzing the synthesis conditions (Me 2+ :Me 3+ molar ratio, calcination temperature, choice of metals for the memory effect), kinetics and isotherm models used, use of support (more practical in a 3D over a 2D form), temperature effect and several techniques for the recovery of the adsorbents. LDH exhibited great performance and potential as clean adsorbents for these emerging contaminants.