Synthesis of glass fiber sphere using waste printed circuit board to support MIL-100(Fe) for dye adsorption in water

Recent Progress in Modifications, Properties, and Practical Applications of Glass Fiber

As a new member of the silica-derivative family, modified glass fiber (MGF) has attracted extensive attention because of its excellent properties and potential applications. Surface modification of glass fiber (GF) greatly changes its performance, resulting in a series of changes to its surface structure, wettability, electrical properties, mechanical properties, and stability. This article summarizes the latest research progress in MGF, including the different modification methods, the various properties, and their advanced applications in different fields. Finally, the challenges and possible solutions were provided for future investigations of MGF.

Highly Efficient and Simultaneous Removal of Cr(VI) and Imidacloprid through a Ferrocene-Modified MIL-100(Fe) Composite from an Aqueous Solution

A novel nanocomposite [Fc-MIL-100(Fe)] was constructed by combining ferrocene (Fc) with the porous structural metal-organic framework [MIL-100(Fe)]. The proposed composite material could simultaneously and efficiently remove hexavalent chromium [Cr(VI)] and imidacloprid and reduced strongly noxious Cr(VI) to weakly noxious trivalent chromium [Cr(III)]. The removal efficiencies of the composite material for Cr(VI) and imidacloprid could reach 95% after 15 h. The adsorption process was determined by kinetics, isotherms, and thermodynamics. The results demonstrated that the adsorption kinetics of Cr(VI) followed the pseudo-second-order model mainly by chemisorption; meanwhile, the adsorption of imidacloprid by the material conformed to the pseudo-first-order kinetics, which indicated that physical adsorption was the main process. Additionally, the intraparticle diffusion model revealed that the uptake of imidacloprid and Cr(VI) occurred via intraparticle diffusion at the composite material. The adsorption procedure for Cr(VI) was fitted to the Langmuir model (R² = 0.995) via monolayer adsorption, and that for imidacloprid was fitted to the Freundlich model (R² = 0.995) due to multilayer or heterogeneous adsorption. The thermodynamic research confirmed that the adsorption procedure was exothermic and spontaneous. Infrared spectroscopy, X-ray photoelectron spectra, and the pH effect implied that intermolecular hydrogen bonding and electrostatic interaction played a crucial role during the removal process. Fc-MIL-100(Fe) also exhibited long-term stability and satisfactory regeneration and reusability. Therefore, this method may enhance an environmentally friendly and prospective approach for concurrently removing imidacloprid and Cr(VI) from wastewater.

Environmental concerns and pollution control in the context of developing countries

In the developing countries, the pace of change-in vital technologies, in scientific research, in economic fundamentals, in the living environment, and in pursuing quality of life-is accelerating every day, propelled by continuous changes in technology innovation, human activities, and the rapidly evolving demands of the COVID-19 pandemic. This special issue (SI) of Environmental Science and Pollution Research (ESPR) collected 17 peer-reviewed articles relating to green buildings research, the impact of climate change on the extreme weather events, forward osmosis membranes for water reuse, the impacts of human activities to fragile water environments and economy, air pollution control and carbon emission reduction, risk assessment of pollution hazard and water resources, adsorption reaction of antibiotic pollution in subsurface, synthesized novel adsorptive materials in response to nitrogen and phosphorus, dye, and toluene pollution. All selected papers were relevance to the theme of this SI and formally presented at the 2020 5th International Conference on Advances in Energy and Environment Research (ICAEER 2020) on September 18th-20th, 2020, Shanghai, China. For the safety of the participants, ICAEER 2020 was held via online presentation because of the coronavirus pandemic sweeping across all over the world. As an annually held conference, the upcoming 6th ICAEER 2021 is scheduled held in Shanghai from September 10 to 12, 2021 ( http://www.icaeer.org/index.html ). The guest editor (GE) of this SI welcomes you all to participate in this conference.