Adsorption and Photocatalysis of Organic Pollutants: Latest Advances and Prospects

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Toxicity Reduction and Environmental Remediation".

Deadline for manuscript submissions: 5 June 2026 | Viewed by 58

Special Issue Editor


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Guest Editor
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Interests: emerging contaminants; organic pollutants; environmental fate; risk assessment; transfer and transformation; soil

Special Issue Information

Dear Colleagues,

The widespread dissemination of emerging contaminants (ECs) across soil and aquatic environments represents a critical challenge to environmental sustainability and security. Understanding and controlling their transport, fate, and removal at the critical soil–water interface is paramount. Having that in mind, this Special Issue, "Adsorption and Photocatalysis of Organic Pollutants: Latest Advances and Prospects," seeks to highlight innovative research and interdisciplinary approaches addressing this challenge. We invite contributions that explore the latest advances in adsorption and photocatalytic technologies for EC mitigation in both aqueous and soil matrices. Topics of interest include, but are not limited to the following: the development of novel, selective, and reusable materials (e.g., engineered biochars, composite photocatalysts); mechanistic studies of interfacial processes and degradation pathways in complex environmental media; the application of these technologies for in situ soil remediation and wastewater treatment; and the development of coupled adsorption–photocatalysis or other hybrid systems for enhanced efficiency. Studies addressing the long-term stability, eco-toxicity of by-products, and scalability of these technologies for real-world application are particularly welcome. This collection aims to serve as a platform for sharing cutting-edge knowledge and fostering the development of integrated strategies for safeguarding water and soil resources.

Prof. Dr. Yufeng Jiang
Guest Editor

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Keywords

  • emerging contaminants
  • adsorption
  • photocatalysis
  • soil and water
  • environmental remediation
  • degradation pathways
  • eco-toxicity

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Published Papers (1 paper)

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Research

17 pages, 2738 KB  
Article
Electromagnetic Fenton Combined with Electro-Biological Coupling Technology for Treating High-Nitrogen Organic Chemical Wastewater
by Dengyan Mu, Xiaojie Chen, Peiyu Zhao, Houhui Zhang, Zhujun Bai and Baoshan Wang
Toxics 2025, 13(12), 1059; https://doi.org/10.3390/toxics13121059 (registering DOI) - 6 Dec 2025
Abstract
High-nitrogen organic chemical wastewater is characterized by high chemical oxygen demand (CODCr), poor biodegradability, and toxic nitrogenous organics, posing significant challenges for conventional biological treatment. In this study, a dual-electrical treatment strategy integrating an electromagnetic Fenton (EM-Fenton) pretreatment unit with a [...] Read more.
High-nitrogen organic chemical wastewater is characterized by high chemical oxygen demand (CODCr), poor biodegradability, and toxic nitrogenous organics, posing significant challenges for conventional biological treatment. In this study, a dual-electrical treatment strategy integrating an electromagnetic Fenton (EM-Fenton) pretreatment unit with a three-dimensional biofilm electrode reactor (3D-BER) is proposed. The EM-Fenton system used iron–carbon fillers under electric and magnetic fields to generate hydroxyl radicals (·OH), enabling efficient oxidation of nitro-aromatic compounds and the conversion of organic nitrogen into NO3-N, while reducing Fe2+ input and iron sludge generation. Subsequently, the 3D-BER, filled with Fe3O4/Mn3O4-modified polyurethane spheres, facilitated autotrophic denitrification and phosphorus removal through enhanced extracellular electron transfer and trace hydrogen (H2) release. Experimental results demonstrated that the EM-Fenton system achieved CODCr and NH4+ removal rates of over 40% and 14%, respectively, under optimal HRT. The 3D-BER further improved removal efficiencies, with TN and TP reductions exceeding 80% and 81%, respectively, significantly outperforming the control groups. Microbial analysis revealed the enrichment of functional genera, such as Pararhodobacter and Thauera, and the upregulation of key denitrification pathways. This coupled system demonstrated high treatment efficiency, process synergy, and microbial selectivity, offering a promising approach for the advanced treatment of high-nitrogen industrial wastewater. Full article
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