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Different effects of bio/non-degradable microplastics on sewage sludge compost performance: Focusing on antibiotic resistance genes, virulence factors and key metabolic functions.
J Hazard Mater
January 2025
Key Laboratory of Marine Geology and Metallogeny, First Institute of Oceanography, Ministry of Natural Resources (MNR), Qingdao 266061, China.
Microplastics (MP) have aroused increasing concern due to the negative environmental impact. However, the impact of bio/non-biodegradable MPs on the sludge composting process has not been thoroughly investigated. This study examined antibiotic resistance genes (ARGs), virulence factors (VFs), and microbial community functions in sludge compost with the application of polylactic acid (PLA) and polypropylene (PP), using metagenomic sequencing.
View Article and Find Full Text PDFMicroplastics in Cuban freshwaters: diversity, temporal changes, and effects on extracellular enzymatic activity.
Environ Pollut
January 2025
Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona Km. 33.600, 28871, Alcalá de Henares, Madrid, Spain.
Plastics, as synthetic polymers, are emerging contaminants that can harm organisms and ecosystems. This study investigates the presence of microplastics in sediments of two rivers in western Cuba, assessing their temporal variability, diversity, and characterizing the types of microplastics in these ecosystems. Additionally, the study examines the relationship between microplastic concentrations, the extracellular enzymatic activity of benthic microbial communities, and nutrient levels in sediments.
View Article and Find Full Text PDFMultifunctional quaternary ammonium-modified TEMPO-oxidized cellulose nanofibers and MIL-100 with encapsulated laccase for efficient removal of anionic arund cationic dyes in wastewater.
Int J Biol Macromol
January 2025
Department of Cell and Molecular Biology, Faculty of Life Science and Biotechnology, Shahid Beheshti University, P.O. Box 19839-69411, Tehran, Iran. Electronic address:
The increasing prevalence of micropollutants like cationic and anionic dyes in wastewater creates an influential environmental challenge, mainly due to their toxic effects and persistence. Current methods often lack the efficiency and versatility to cope with a wide variety of contaminants. This study explores the modification of TEMPO-oxidized cellulose nanofibers (TOCNF) using (3-chloro-2-hydroxypropyl) trimethylammonium chloride (CHPTAC) to enhance their cationic properties.
View Article and Find Full Text PDFEnhancing single-stage partial nitritation-anammox process with airlift inner-circulation and oxygen partition: a novel strategy for treating high-strength ammonium wastewater.
Environ Res
January 2025
School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410004, China. Electronic address:
In the single-stage partial nitritation-anammox process for high-ammonium wastewater treatment, the presence of sufficient biomass with high activity is essential. This study developed an innovative airlift inner-circulation partition bioreactor (AIPBR) with a dual-cylinder structure. During the 362 days' operation, the AIPBR exhibited robust and stable nitrogen removal performance under diverse influent ammonium spanning from 300 to 1800 mg N/L.
View Article and Find Full Text PDFIntegrated transcriptomics and metabolomics analyses provide new insights into cassava in response to nitrogen deficiency.
Front Plant Sci
January 2025
National Center of Technology Innovation for Saline-Alkali Tolerant Rice, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China.
Nitrogen deficiency is a key constraint on crop yield. Cassava, the world's sixth-largest food crop and a crucial source of feed and industrial materials, can thrive in marginal soils, yet its yield is still significantly affected by limited nitrogen availability. Investigating cassava's response mechanisms to nitrogen scarcity is therefore essential for advancing molecular breeding and identifying nitrogen-efficient varieties.
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