Low-cost silica xerogels as potential adsorbents for ciprofloxacin removal

Removal of Ciprofloxacin from Water by a Potassium Carbonate-Activated Sycamore Floc-Based Carbonaceous Adsorbent: Adsorption Behavior and Mechanism

“…Therefore, the process of SFB 2‑900 adsorbing CIP was favorable. Based on the thermodynamic parameters in Table S5, the passive Δ G and Δ H suggested that the adsorption process was spontaneous and exothermic, and the physisorption was assumed to be predominant. − Similar results have also been found in other literature. ,, Δ S < 0 corresponded to the decreasing randomness, manifesting the decreased concentration of CIP at the liquid–solid interface and the increase of CIP on the SFB 2‑900 surface …”

“…53−56 Similar results have also been found in other literature. 5,53,57 ΔS < 0 corresponded to the decreasing randomness, manifesting the decreased concentration of CIP at the liquid−solid interface and the increase of CIP on the SFB 2-900 surface. 58 RSM to Optimize Adsorption Conditions.…”

Interfacial charge transfer weakens hydrogen bonds between water molecules to accelerate solar water evaporation

“…5g). 40–74 In addition, rGOFpl foam was used to purify the aqueous solution containing the artificial dye Rhodamine B. It was found that the UV vis characteristic peak of Rhodamine B in condensed and collected water at 570 nm disappeared after purification, and the purification efficiency was close to 100% with the color of the solution changing from pink to colorless, as shown in Fig.…”

Unraveling the Origin of Enhanced Activity of the Nb2O5/H2O2 System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes

“…These arguments show that the removal of excessive amounts of antibiotics from industrial and municipal sewage is a significant challenge. One of the most effective methods of their depletion from wastewater is the sorption process (immobilization of the antibiotic molecules on the surface of various adsorbents, e.g., activated carbons or chars, mineral clays, amorphous silica, or zeolites). Its efficiency is strongly affected not only by the properties of the target pollutant and parameters of the wastewater (temperature, pH, presence of other pollutants, etc.)…”

“…). , The most important drawbacks of sorption processes are associated with the need to regenerate the spent adsorbents. The regeneration process usually requires the use of other toxic chemicals, such as mineral acids, to desorb the immobilized antibiotic. , Thus, the regeneration process may lead to the generation of additional corrosive waste, which must be neutralized anyway before being released into the environment.…”