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Toxics
Special Issues
Biodegradation and Bioremediation for Emerging Environmental Pollutants
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Biodegradation and Bioremediation for Emerging Environmental Pollutants

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

Deadline for manuscript submissions: 1 July 2026 | Viewed by 982

Special Issue Editors

Prof. Dr. Lei Ren

E-Mail Website
Guest Editor
College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
Interests: microbiome; biodegradation; bioremediation; emerging pollutants; environmental microbiology; molecular biology; marine microbe; mangrove ecosystem
Prof. Dr. John Zhou

E-Mail Website
Guest Editor
Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
Interests: environmental chemistry; energy engineering; environmental engineering; sustainability engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Hongming Liu

E-Mail Website
Guest Editor Assistant
Life Science School, Anhui Normal University, Wuhu 241002, China
Interests: biodegradation; bioremediation; engineering microorganisms; enzymology; molecular mechanisms

Special Issue Information

Dear Colleagues,

Emerging pollutants (EPs) are a diverse group of chemicals and compounds that have been newly discovered or have recently attracted attention and that possess characteristics such as biological toxicity, environmental persistence, and bioaccumulation, and pose a threat to human health and to the security of the ecological environment (through micro-plastics, nanomaterials, antibiotics, etc.). The source, distribution, fate, and toxicity of EPs have resulted world-wide concern. Nevertheless, the technologies needed to remediate of EPs are still limited. Therefore, this Special Issue will focus on the biodegradation and bioremediation of Eps, and we hope that this Special Issue will be significant for our understanding of the fate of EPs in nature and for developing in situ cleanup strategies. Original research works and review articles are welcome. Possible submission topics may include, but are not limited to, the following: (i) identifying EPs degrading microbes via culture-dependent or -independent (e.g., metagenomic methods) approaches; (ii) isolating and characterizing EPs degrading microbes with robust degrading capacity, environmental adaptability, and application potential; (iii) deciphering the metabolic mechanisms (pathway and molecular mechanism) of EPs in microbes and related environments; and (iv) evaluating the application potential of EPs in degrading microbes via bioremediation and bioaugmentation.

Prof. Dr. Lei Ren
Prof. Dr. John Zhou
Guest Editors

Dr. Hongming Liu
Guest Editor Assistant

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Toxics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • emerging pollutnats
  • biodegradation
  • bioremediation
  • environmental microbes
  • metabolic mechanism
  • metabolic pathway
  • microbiome

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Published Papers (1 paper)

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Research

23 pages, 1922 KB  
Article
Biodegradation of Triphenyl Phosphate by a Novel Marine Bacterium Pseudomonas abyssi RL-WG04: Characterization, Metabolic Pathway, Bioremediation and Synergistic Metabolism
by Min Shi, Danting Xu, John L. Zhou, Yang Jia, Hanqiao Hu, Xingyu Jiang and Yanyan Wang
Toxics 2026, 14(4), 280; https://doi.org/10.3390/toxics14040280 - 26 Mar 2026
Viewed by 595
Abstract
Triphenyl phosphate (TPHP), a typical organophosphate flame retardant, has been listed as an emerging pollutant, yet its biodegradation remains poorly studied. Herein, an efficient TPHP-degrading marine bacterium, Pseudomonas abyssi RL-WG04, was isolated from mangrove sediments, which could degrade 95.22% of 100 mg/L TPHP [...] Read more.
Triphenyl phosphate (TPHP), a typical organophosphate flame retardant, has been listed as an emerging pollutant, yet its biodegradation remains poorly studied. Herein, an efficient TPHP-degrading marine bacterium, Pseudomonas abyssi RL-WG04, was isolated from mangrove sediments, which could degrade 95.22% of 100 mg/L TPHP within 120 h. RL-WG04 exhibited good tolerance to varied environmental conditions, maintaining over 70% TPHP degradation percentages (100 mg/L, 7 d) across 20–50 °C, pH 7.0–9.0, and salinity 2.0–4.0% (NaCl, w/v). Organic solvents (p-xylene, biphenyl, toluene and ethyl acetate, 0.5% v/v) had a negligible impact, whereas metal ions (Mn2+, Fe3+, Ca2+, Cu2+, Mg2+, Zn2+, and Co2+) strongly inhibited degradation, especially at 1 mM. Under optimized conditions, TPHP degradation by RL-WG04 followed the improved Gompertz model (R2 = 0.99927). Metabolite identification indicated that RL-WG04 transformed TPHP into phenol but failed to utilize phenol for growth because of the phenol 2-monooxygenase deficiency. Nevertheless, the constructed consortia of RL-WG04 and Pseudomonas sp. RL-LY03 (phenol-degrading bacterium) achieved complete TPHP degradation and cell proliferation. Additionally, RL-WG04 could efficiently remove TPHP (25 mg/kg) from clay and sandy mangrove sediments with 100% and 90.04% removal percentages, respectively. Overall, this work provides novel insights into the fate of TPHP and a potential approach for its remediation. Full article
(This article belongs to the Special Issue Biodegradation and Bioremediation for Emerging Environmental Pollutants)
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