Ecophysiological characterization of thermophilic anammox process: Impact of environmental conditions and wastewater constituents on the activity of a novel granular thermophilic anammox culture.

Fe(VI) Oxidation of Mixed Trace Phenols: Kinetics, QSAR Modeling, and Cross-Polymerization Mechanisms.

The moving bed biofilm reactor (MBBR) is a cornerstone technology in modern wastewater treatment, yet its performance is often hindered by carrier clogging, which significantly reduces overall treatment efficiency and undermines the technology's environmental benefits. Here, we introduce a V-carrier hydro-topological design strategy that enables biofilm self-regulation, allowing simultaneous control of biofilm thickness and continuous hydraulic shear-induced self-cleaning. In a pure biofilm system treating real municipal wastewater for over 500 days, the V-carrier achieves stable and efficient nutrient removal even under low-temperature (9.1 °C) and high-loading conditions. Crucially, it achieves a 3.2-fold higher unit biomass nitrification rate with a biofilm biomass 44% lower than a conventional K3 carrier, demonstrating that treatment efficiency is decoupled from biomass quantity through optimal ecological niche design. This work establishes a paradigm for biofilm reactor design, transforming carriers from passive substrates into active regulators of microbial ecosystems, with profound implications for sustainable water infrastructure.

Oligo-cyanobacterial microalgae-bacteria granular sludge for mitigating cyanotoxin risk: Cultivation, characteristics, and formation mechanism.

This study systematically analyzed research trends in aquaculture wastewater treatment from 2000 to 2024 using bibliometric methods. Through knowledge mapping and keyword co-occurrence analysis conducted with Citespace6.1 software on the Web of Science Core Collection and the CNKI (China National Knowledge Infrastructure) Core Journal Database, we aimed to elucidate the distribution characteristics, evolution of research hotspots, and differences in technological pathways within the existing research landscape, while identifying gaps in integrated knowledge synthesis and cross-regional comparative analysis. The results indicate: (1) China’s publication output in this field over the past five years has significantly surpassed international levels, reflecting an imbalance in regional research activity; (2) antibiotics, nitrogen and phosphorus, organic pollutants, and heavy metals constitute the primary pollutant categories, with increasing attention focused on antibiotic and heavy metal pollution in recent years; (3) domestic research demonstrates a preference for natural ecological treatment technologies, whereas international research is predominantly oriented toward biological treatment technologies. By integrating Chinese- and English-language literature data with visual analytics, this study addresses the existing gap in systematic knowledge mapping and comparative analysis of regional technological pathways, and highlights the ongoing paradigm shift from pollution elimination toward resource recovery. The findings provide an empirical basis for formulating differentiated regional governance policies and guiding investments in low-carbon and environmentally friendly technology research and development, thereby promoting the transition of the aquaculture industry toward green and sustainable development.

Iron‑molybdenum-based nitrides with nanorod heterostructure as multifunctional electrocatalysts for urea oxidation assisted water electrolysis at high current density.

Halide ions in homogeneous Fenton/Fenton-like systems: The double-edged sword effect from molecular mechanisms to selective regulation of high-salinity wastewater.

High-rate ammonium removal and recovery and hydrogen production from wastewater using microbial electrolysis cell.

Nitrogen removal hotspot shifts and enhancement mechanisms in anaerobic/aerobic/anoxic process under cold shock.

Enhancement of nitrogen removal from low C/N wastewater under the optimization of electron donors utilization based on phosphorus recovery strategy.

Application of multi-criteria analysis for selecting the most sustainable industrial wastewater treatment technology

Recent development in high-salinity wastewater treatment technologies for zero liquid discharge

Nature-based wastewater treatment technologies: A comprehensive review of constructed wetlands and vermifiltration

Construction of immobilized direct Z-scheme ZnS QDs-Fe2O3 QDs|430-SSF photocatalyst film for methylene blue degradation with simultaneous hydrogen production.

The hidden power of microalgal extracellular polymeric substances: A natural source of persistent free radicals for aquatic environmental remediation.

Electrochemical oxidation (EO) is a promising technology for saline wastewater treatment, but its application is hindered by limited efficiency and the generation of toxic chlorinated byproducts. Here we introduce a nanoconfinement-assisted EO strategy using TiO2 nanotube (NT) anodes that overcomes these challenges. Compared with TiO2 film and nanoparticle electrodes, the TiO2 NT system achieved 95.6% phenol removal (vs 61.3% and 78.1%), a 3-fold higher degradation rate constant, 71.9% mineralization efficiency (vs 10.8% and 17.9%), and ∼80% lower chlorinated byproduct conversion. Six representative pharmaceutical and personal care products were removed by >90% with concurrent toxicity reduction. Mechanistic investigations combined with density functional theory revealed that spatial confinement enriches pollutants and reactive species at the electrode interface, strengthening direct electron transfer (DET) and indirect direct electron transfer (IDET). More importantly, confinement promoted radical-radical cross-coupling, establishing a synergistic pathway between DET and IDET with the lowest thermodynamic barrier, driving deep mineralization while minimizing chlorination. The nanoconfinement-assisted EO system further demonstrated efficient pollutant removal, toxicity control, and long-term stability in treating biologically treated coking wastewater. These findings highlight nanoconfinement as a powerful design principle for advancing EO toward practical saline wastewater treatment.

ABSTRACT Radioactive iodine from nuclear accidents like Fukushima necessitates efficient wastewater treatment technologies. Current adsorbents are hampered by challenging recovery and limited reusability. Herein, we synthesize a magnetic composite, GS@Fe3O4@ZIF-8, by anchoring ZIF-8 to magnetized Galdieria sulphuraria(GS), allowing for sub-one-minute magnetic separation. This adsorbent achieves a high iodine adsorption capacity of 1712.08 mg/g at pH 5, outperforming most MOF-based benchmarks. Characterization (XRD, SEM, FT-IR, XPS, EDS) verified its structure. Adsorption studies determined the optimal conditions (pH 5) and demonstrated robust performance across varied concentrations, temperatures, and times. The material also exhibits superior selectivity and stability, retaining 83% efficiency over three cycles. Our findings highlight GS@Fe3O4@ZIF-8 as a sustainable and recyclable material for radioactive iodine capture.

This review addresses the escalating global water crisis driven by water pollution, especially by heavy metal ions, a consequence of rapid industrialization and population growth. Due to their high toxicity, solubility, and persistence, heavy metals pose a severe threat to human health and ecosystems through bioaccumulation. The analysis highlights a strategic shift in wastewater management from simple elimination of the toxics metal ions to the recovery of metal ions with economic value. Given the increasing complexity of industrial effluents, the scientific community is intensifying its focus on evaluating the technical and financial feasibility of various treatment technologies. Significant research is being conducted to address these environmental issues, and innovative technologies are being developed to enhance the quality of water contaminated by metal ions. On the other hand, to prevent pollution, plans containing several barriers must be established, including management, economic, and technical ones. Ultimately, the reuse of treated wastewater is the only viable long-term solution for securing global drinking water supplies. A new analysis focused on the transition from traditional, inefficient, and costly wastewater treatment to advanced, resource recovery-oriented systems is essential. The current perspective shows a clear need to advance beyond synthetic laboratory studies to real-world applications while addressing operational barriers to support a circular economy based on simple disposal of the toxic metal ions to the recovery of metals with economic value (e.g., copper, gold, silver, rare metals). Also, although the field has been explored, a new review is imperative because current technologies that show high efficiency (up to 99%) in the removal of toxic metal ions (adsorption, membrane filtration, electrochemical processes) face major challenges, such as the formation of large volumes of toxic sludge, membrane fouling, and high operating costs.

Lakes Koka and Ziway in the Central Rift Valley (CRV) of Ethiopia are essential socio-ecological systems that provide water for domestic use, irrigation, hydropower, and fisheries, while also sustaining diverse biological communities. However, these lakes are under severe ecological stress due to intensifying anthropogenic pollution from industrial, agricultural, and urban sources. This review synthesizes multidisciplinary evidence on pollution sources, types, and ecological consequences, focusing on impacts to water quality and ecosystem services. Physicochemical data reveal that concentrations of heavy metals, nutrients, and organic pollutants regularly exceed World Health Organization (WHO) guidelines, with alarming levels of nitrate, phosphate, lead, chromium, and cadmium observed in both lakes. Agricultural runoff, industrial effluents, and untreated municipal wastewater emerge as primary pollution sources. These contaminants drive eutrophication, biodiversity loss, and the decline of fisheries, thereby undermining livelihoods and exacerbating water insecurity. Invasive species such as water hyacinth further degrade aquatic habitats, while sedimentation alters hydrological dynamics. The review highlights the flowing impacts of pollution on ecosystem services, including disruption of water supply, economic loss, and health risks. It also identifies knowledge gaps and emphasizes the need for integrated watershed governance, investment in wastewater treatment technologies, adoption of sustainable agricultural practices, and enhanced community participation. The review underscores the urgency of adopting a multisectoral response grounded in Integrated Water Resources Management (IWRM), emphasizing collaborative governance, technological innovation, and community-led stewardship as pathways to restore and sustain the health and services of lake ecosystems in the CRV.

Unraveling the microbial and functional mechanisms driving rapid algal-bacterial granular sludge formation in mariculture wastewater.