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Metal Elements and Wastewater Treatment: Adsorption, Catalysis and Oxidation

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: 20 October 2025 | Viewed by 445

Special Issue Editor


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Guest Editor
School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
Interests: sustainable wastewater treatment; bioenergy recovery; phosphours recovery; carbon based catalyst; heterogenous catalysis; advanced oxidation process
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Special Issue Information

Dear Colleagues,

Urban and industrial wastewater pollution has become an increasingly pressing issue due to the frequent detection of incompletely treated pollutants, which are transported through Earth's hydrological cycle, posing risks to ecosystems and human health. While metal-based technologies such as adsorption, catalysis, and oxidation have been studied extensively for wastewater remediation, recent advances in nanotechnology, metal recovery, and sustainable metal use open new avenues for research and application. However, current research often treats these processes in isolation, lacking an integrative approach that considers their interconnected roles in treatment systems. This Special Issue is necessary to bridge this gap by fostering cross-disciplinary discussions on the multifaceted roles of metals in wastewater treatment. It aims to provide a platform for innovative research on topics such as metal-based nutrient adsorption and recovery, advanced oxidation processes, metal-mediated catalytic oxidation of pollutants, the occurrence and fate of contaminants at the metal-material interface, and the life-cycle assessment of metal material preparation and utilization. By promoting a holistic understanding of these areas, the Special Issue will contribute to advancing sustainable and effective wastewater treatment technologies.

Dr. Baocheng Huang
Guest Editor

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Keywords

  • metal material
  • wastewater remediation
  • catalytic oxidation
  • adsorption
  • risk assessment

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Published Papers (1 paper)

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Research

11 pages, 2741 KiB  
Article
Lanthanum and Sludge Extracellular Polymeric Substances Coprecipitation-Modified Ceramic for Treating Low Phosphorus-Bearing Wastewater
by Yao-Yao Lu, Chao-Xi Yang, Ke-Yu Chen, Jiao-Jiao Wang, Bao-Cheng Huang and Ren-Cun Jin
Water 2025, 17(8), 1237; https://doi.org/10.3390/w17081237 - 21 Apr 2025
Viewed by 236
Abstract
Excessive phosphorus discharge from fertilizers and detergents has caused severe eutrophication in water bodies, necessitating the upgrading of efficient and cost-effective adsorbents for phosphorus removal. In this study, a novel lanthanum and extracellular polymeric substance (EPS) coprecipitation-modified ceramic (La-EPS-C-450) was developed to address [...] Read more.
Excessive phosphorus discharge from fertilizers and detergents has caused severe eutrophication in water bodies, necessitating the upgrading of efficient and cost-effective adsorbents for phosphorus removal. In this study, a novel lanthanum and extracellular polymeric substance (EPS) coprecipitation-modified ceramic (La-EPS-C-450) was developed to address the limitations of existing adsorbents. The ceramic filler served as a robust and scalable matrix for lanthanum loading, while EPS introduced functional groups and carbonate components that enhanced adsorption efficiency. The prepared adsorbent manifested a maximum phosphorus adsorption capacity of 83.5 mg P/g-La at 25 °C, with its performance well expressed by the Freundlich isotherm model, indicating that it was a multilayer adsorption process. The adsorption mechanism was driven by electrostatic attraction and ligand exchange between lanthanum and phosphate ions, forming inner-sphere complexes. The material demonstrated unfluctuating‌ performance across a pH range of 3–7 and retained high selectivity in the presence of competing anions. In practical applications, La-EPS-C-450 effectively removed phosphorus from actual river water, achieving a treatment capacity of 1800 bed volumes in a continuous-flow fixed column system. This work provides valuable insights into the progress of advanced ceramic-based adsorbents and demonstrates the potential of La-EPS-C-450 as a cost-efficient and effective material for phosphorus removal in water treatment applications. Full article
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