Influence of UV wavelength variations on tetracycline adsorption by polyethylene microplastics in aquatic environments.

The effect of ultraviolet (UV) light on structural changes is a significant concern, particularly regarding the weathering and aging effects on microplastics (MPs). This research focused on examining how various UV light wavelengths (UVC, UVB, and UVA) influence the adsorption behavior of aged polyethylene (PE) MPs toward tetracycline (TC). To explore the adsorption mechanism in detail, adsorption kinetics were studied under different UV light wavelengths.

Microalgae - bacteria based wastewater treatment systems: Granulation, influence factors and pollutants removal.

Wastewater treatment based on microalgae and bacteria symbiosis is an environmentally friendly, sustainable technology that has attracted attention recently because of its high efficiency in treating pollutants, saving energy, and short-term biomass recovery. Among them, the granular microalgae and bacteria combination emerges with the advantages of rapid gravity settling, good resistance to adverse environmental conditions, outstanding wastewater treatment performance, and easy biomass recovery. This review aims to clarify the microalgal-bacterial granule (MBG) - based process for wastewater treatment.

Enhancing the degradation of microplastics through combined KMnO oxidation and UV radiation.

The pervasive issue of microplastics in aquatic environments presents a formidable challenge to traditional water treatment methodologies, including those utilizing KMnO. This study pioneers advanced oxidation processes (AOPs) method aimed at improving the degradation of PE microplastics by employing a dual treatment strategy that combines KMnO oxidation with UV irradiation. Detailed analysis of the surface modifications and chemical functional groups of the treated PE microplastics revealed the establishment of Mn-O-Mn linkages on their surfaces.

Annoglabrin A-C, three new ent-kaurane diterpenoids from the fruit pulp.

Three new -kaurane diterpenoids, namely annoglabrin A-C (), were isolated from the fruit pulp. Their structures were clarified by widespread spectroscopic analyses (1D and 2D NMR, HRESIMS). The relative configuration of these new compounds was established through the NOESY spectrum.

Population genetics analysis of A.Chev. ex Lecomte (Ebenaceae) based on EST-SSR markers derived from a novel transcriptome.

A.Chev. ex Lecomte (Ebenaceae), a native evergreen tree in Vietnam, has important economic and ecological values.