Tammy Laysandra, Felycia Edi Soetaredjo, Jindrayani Nyoo Putro, Jenni Lie, Chintya Gunarto, Valentino Bervia Lunardhi, Shella Permatasari Santoso, Wenny Irawaty, Maria Yuliana, Christian Julius Wijaya, I. Gede Wenten, Suryadi Ismadji
Tetracycline (TTC) and doxycycline (DXC) are antibiotics commonly used to treat infections; however, overuse of these antibiotics impacts human health and the environment. Metal-organic frameworks (MOFs) arose as a recent potential adsorbent has a coordinative crystalline porous framework constructed through metal cluster coordination bridged towards organic ligands exhibiting high surface area, adjustable pore size, and high stability. In this study, HKUST-1 synthesized at room temperature was used for the first time for the adsorption of TTC and DXC as single and binary components. The pseudo-first-order equation can well represent the adsorption kinetics of TTC and DXC data on HKUST-1, while the adsorption isotherm data for TTC and DXC are well represented by the Redlich-Paterson equation. The extended Langmuir, Sips, Toth, and Redlich-Patterson equations failed to represent binary component adsorption isotherm data in HKUST-1. By modifying the adsorption affinity parameter of the extended Redlich-Paterson equation, the adsorption isotherm data of the TTC and DXC binary components can be represented by this equation. Adsorbed TTC and DXC in the HKUST-1 framework could not be recovered through water regeneration. If organic solvents or highly concentrated base solutions were used as solvents, the structure of HKUST-1 would be disrupted. © 2023
Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya, 60114, Indonesia; Collaborative Research Center for Zero Waste and Sustainability, Jl. Kalijudan 37, East Java, Surabaya, 60114, Indonesia; Department of Chemical Engineering, Institute of Technology Bandung (ITB), Jl. Ganesha 10, Bandung, 40132, Indonesia