Solvent-free upcycling of agricultural plastic waste using in situ self-assembly metal nanoparticles co-doped microporous carbocatalyst for advanced transportation fuels.

Plastic mulching film is ubiquitous in modern agriculture for its heat preservation and moisture retention functions. However, plastic mulching film waste accumulated on land results in microplastic pollution, posing potential hazards as these micro and nanoplastics can enter the food chain. Chemical upcycling of waste mulching film is an emerging strategy to realize sustainable development and circular economy.

Influence of sewage sludge compost on heavy metals in abandoned mine land reclamation: A large-scale field study for three years.

Using sewage sludge compost (SSC) for abandoned mine land reclamation supports ecological sustainability, but the environmental behavior of heavy metals in this process lacks systematic field validation. Here we analyzed the dynamic changes in heavy metal composition in topsoil, surface runoff, and subsurface infiltration after large-scale reclamation. Results show that SSC application promoted plant growth by 2-4 times, enhanced the physicochemical structure of the topsoil, and increased the levels of organic matter and inorganic nutrients.

Exposure to 6PPD-Q induces dysfunctions of ovarian granulosa cells: Its potential role in PCOS.

N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine-quinone (6PPD-Q), an environmental pollutant derived from the ozonolysis of the widely used tire rubber antioxidant 6PPD, has been found to accumulate in air, dust, and water, posing significant health risks. While its reproductive toxicity in male organisms has been established, its effects on female reproductive health remain unclear. Polycystic ovary syndrome (PCOS), a common endocrine disorder in premenopausal women, is known to be influenced by environmental pollutants.

Low-molecular weight organic acids can enhance the microbial reduction of iron oxide nanoparticles and pollutants by improving electrons transfer.

The combined application of dissimilatory iron-reducing bacteria (DIRB) and Fe(III) nanoparticles has garnered widespread interest in the contaminants transformation and removal. The efficiency of this composite system relies on the extracellular electron transfer (EET) process between DIRB and Fe(III) nanoparticles. While modifications to Fe(III) nanoparticles have demonstrated improvements in EET, enhancing DIRB activity also shows potential for further EET enhancement, meriting further investigation.

Water-soluble carboxymethyl chitosan and rhamnolipids promote the remediation of Cd-contaminated soil by mediating the growth of Hylotelephium spectabile and regulating the rhizospheric ecological environment.

The application of biodegradable chelating agents in phytoremediation is a promising approach. This study aimed to investigate the effects and roles of underlying mechanisms of water-soluble carboxymethyl chitosan (WSCC) and rhamnolipids (RLs) on the remediation of Cd-contaminated soil by Hylotelephium spectabile. WSCC and RLs mediated the growth of H.

Co single-atom catalyst for efficient and long-acting activation of peroxymonosulfate: Formation of Co-N site and insight into the activation mechanism.

While single-atom catalysts (SACs) have been extensively investigated as a high-atom-efficiency heterogeneous catalyst for peroxymonosulfate (PMS) oxidation reaction, the stable constructing and activation efficacy of the reaction sites remains less clarified. Herein, we employed gelatin as a N,O-bidentate ligand for Co (II) to form for a N-doped carbon precursor, while introducing NaCl as a template agent to induce the adoption of a Co-N conformation and disorganize the Co-O moiety. This approach facilitates uniform spatial isolation and atomic-level dispersion of Co atoms within the aerogel, effectively inhibiting the aggregation of Co during synthesis and enabling precise and controllable preparation of Co single-atom catalysts (SACs).

Long-term exposure to Emamectin benzoate impairs reproductive health in adult zebrafish and alters neurodevelopment in their offspring.

Emamectin benzoate (EMB) is a widely used insecticide that can accumulate in aquatic environments under specific conditions of high application intensity or improper management, posing potential risks to aquatic organisms and human health. This study aimed to evaluate the reproductive toxicity of long-term EMB exposure in zebrafish (Danio rerio) and neurodevelopmental toxicity in their offspring. Zebrafish embryos were exposed to various concentrations of EMB (0, 0.

Missing pieces in the puzzle of ecology of microbial arsenate reduction.

Arsenic pollution and its associated health risks have raised widespread concern. Under anaerobic conditions, arsenic mobility and toxicity increase when arsenate [As(V)] is reduced to arsenite [As(III)] by microbes through the cytoplasmic and dissimilatory pathways. However, the relative importance of these two pathways in the environment remains unclear, restricting our ability to effectively predict and regulate the environmental behavior of arsenic.

Development of a bioreactor with an integrated non-dispersive infrared CO sensor for rapid and sensitive detection of Cr(VI) toxicity in water.

Whole-cell bioreactors equipped with external physico-chemical sensors have gained attention for real-time toxicity monitoring. However, deploying these systems in practice is challenging due to potential interference from unknown wastewater constituents with liquid-contacted sensors. In this study, a novel approach using a bioreactor integrated with a non-dispersive infrared CO₂ sensor for both toxicity detection and real-time monitoring of microbial growth phases was successfully demonstrated.

DNAzyme-mediated isothermal catalytic hairpin assembly for rapid and enzyme-free amplified detection of lead(Ⅱ) ion.

The detection of heavy metal ions, particularly lead (Pb²⁺), in environmental samples is crucial for public health and safety. Current nucleic acid signal amplification methods for Pb²⁺ detection often rely on biological enzymes and are limited in applicability due to high costs, prolonged detection times, and nonspecific adsorption. In this study, we introduce an enzyme-free, DNAzyme-mediated isothermal catalytic hairpin assembly (DMICHA) assay, which combines a DNAzyme-based Pb²⁺ recognition module with a signal amplification process utilizing isothermal catalytic hairpin assembly (CHA).

Insight into radionuclide U deposition in multiple-environmental media in Muztagh Ata Glacier Basin of the eastern Pamirs.

This study concerns the U/U ratios in environmental samples collected in the Pamir region (Central Asia). Cryoconite (a supra-glacial sediment), soil and river water were sampled in the Muztagh Ata Glacier Basin, a secondary basin belonging to Gaizi River watershed. The aim of the research is to assess the impact of anthropic nuclear activities in such a remote area, being the U/U ratio highly sensitive to anthropogenic disturbances.

Aerobic composting with hydrothermal carbonization aqueous phase conditioning: Stabilized active gaseous nitrogen emissions.

The losses of reactive gaseous nitrogen (N), including ammonia (NH) and nitrous oxide (NO), represent a pressing environmental issue during composting. However, the impact of hydrothermal carbonization aqueous phase (HAP) on compost gaseous N emissions and the underlying mechanisms remain largely unexplored. Herein, Quercus acutissima leaves-derived HAP and its modified HAP (MHAP) were added to the chicken manure compost at 5 % (w/w) and 10 % (w/w) applied rates to observe changes in NH and NO fluxes, compost properties and bacterial communities.

Characterization of metalaxyl-induced notochord toxicity based on biochemical and transcriptomics in zebrafish (Danio rerio) model.

Metalaxyl is an acylanilide systemic fungicide that is widely applied and can readily enter ecosystems through leaching and soil runoff. This research utilized zebrafish as a model organism to thoroughly investigate the detrimental impacts of environmentally relevant levels of metalaxyl on the development of the notochord in zebrafish embryos and to elucidate the underlying molecular mechanisms through transcriptomics, pharmacological intervention and molecular biological detection. The preliminary results demonstrated that metalaxyl induced significant modifications in the developmental parameters of zebrafish embryos.

Coral-Symbiodiniaceae symbiotic associations under antibiotic stress: Accumulation patterns and potential physiological effects in a natural reef.

Antibiotics threaten scleractinian corals, but their accumulation patterns and physiological effects on corals in natural reefs remain unclear. This study investigated antibiotic occurrence in seawater and two coral species, Galaxea fascicularis and Pocillopora damicornis, and explored the physiological effects of bioaccumulated antibiotics in a fringing reef of the South China Sea. Nineteen antibiotic components were detected in seawater, with total antibiotic concentrations (ΣABs) ranging from 17.

In Vivo visualization of microplastic degradability and intestinal functional responses in a plastivore insect.

The plastivore insect Tenebrio molitor demonstrates significant potential for the rapid biodegradation and bioremediation of micro(nano)plastics. However, real-time visualization of the digestive degradation and removal of microplastics (MPs) during intestinal transit, along with the associated in vivo intestinal functional responses, remains challenging. Here, we developed second near-infrared (NIR-II) window aggregated-induced emission (AIE) MPs of two sizes (29.

Unveiling soil-borne antibiotic resistome and their associated risks: A comparative study of antibiotic and non-antibiotic pharmaceutical factories.

Antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB) are extensively documented within antibiotic pharmaceutical factories. Notably, non-antibiotic pharmaceuticals also represent a significant portion of the pharmaceuticals market. However, the comparative analyses of soil-borne ARG profiles and associated risks in different categories of pharmaceutical factories remain limited.

Microplastic types dominate the effects of bismuth oxide semi-conductor nanoparticles on their transport in saturated quartz sand.

The transport of microplastics (MPs) is of great significance due to its potential threat to subsurface systems. The copresence of MPs and semi-conductor nanoparticles is quite common in practical environments (i. e.

Buckwheat responds to co-exposure to PLA microplastics and Pb by regulating the synthesis of unsaturated fatty acids and jasmonates.

Polylactic acid (PLA) microplastics (MPs) and lead (Pb) co-contamination, an emerging co-contamination, may profoundly impact plant growth. We aimed to evaluate the effects of PLA-MPs and Pb on buckwheat growth and physiology and to elucidate the underlying molecular mechanisms through an integrated transcriptomic and metabolomic approach. PLA-MPs alone reduced buckwheat biomass by 26.

Carbon quantum dots modification reduces TiO nanoparticle toxicity in an aquatic food chain.

Carbon quantum dots (CQDs) are emerging as a promising zero-dimensional carbon nanomaterial with the potential to enhance the catalytic properties of titanium dioxide nanoparticles (TiO NPs). Although CQDs modification alters the physicochemical properties of TiO NPs, the impact on their toxicity has been rarely explored. In this study, we investigated the effects of CQDs doping on the toxicity, bioaccumulation, and trophic transfer of TiO NPs using a representative aquatic food chain comprising phytoplankton (Scenedesmus obliquus), zooplankton (Daphnia magna), and fish (Danio rerio).

Co-exposure to polystyrene nanoplastics and F-53B induces vascular endothelial cell pyroptosis through the NF-κB/NLRP3 pathway.

6:2 Chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA; trade name F-53B) is an alternative to perfluorooctane sulfonate (PFOS) and is widely detected in various environmental media and biological samples. Polystyrene nanoplastics (PS-NPs) have become a significant pollutant in the global environment. However, the comprehensive effects of both on the vascular system of mammals are still unclear.

New insights into microbial degradation of polyethylene microplastic and potential polyethylene-degrading bacteria in sediments of the Pearl River Estuary, South China.

Microplastics (MPs) are widely distributed pollutants in various ecosystems, and biodegradation is a crucial process for removal of MPs from environments. Pearl River Estuary, one of the largest estuaries in China, is an important reservoir for MPs with polyethylene MPs (PE-MPs) as the most abundant MPs. Here, biodegradation of PE-MPs and the potential PE-degrading bacteria in sediments of eight major outlets of Pearl River Estuary were firstly investigated.

Assessment of air pollutant O pulmonary exposure using a bronchus-on-chip model coupling with atmospheric simulation chamber.

Heavy air pollution is now a serious public health issue. Many studies have shown strong connections between ozone (O) with the occurrence and development of various respiratory diseases. However, the exact mechanism is still a matter of debate.

Hazardous electrolyte releasement and transformation mechanism during water protected spent lithium-ion batteries crushing.

Wet-crushing with aqueous media protection is considered safer and more efficient than common inert-gas protected dry-crushing in preprocessing spent lithium-ion batteries (LIBs). However, it is also accompanied with the releasement and transformation of hazardous electrolyte, while the mechanisms and pollution impact yet remain unknown. Based on a self-built wet-crushing system, this topic was systematically investigated here.

Irradiation and DOM mediate lead release from polyvinyl chloride microplastics in natural surface water.

Polyvinyl chloride (PVC) is a widely used plastic, but the potential risk of heavy metal additive release from PVC microplastics (MPs) has not been fully explored. This study evaluates the release of lead (Pb) from recycled PVC MPs under natural conditions. The released Pb concentration in the dark was 1079.

Mechanochemical destruction of perfluorooctane sulfonate (PFOS) using boron carbide (BC).

Widespread detection in soils and sediments underscores the potential threats posed by persistent, bioaccumulative and toxic perfluorooctane sulfonate (PFOS) to ecosystems and organisms. Nevertheless, the formidable energy of the C-F bond imparts stability and hampers degradation. This study investigates the potential of boron carbide (BC), a hard-ceramic material often utilized in armor and abrasion contexts, for degrading solid-phase PFOS through ball milling.