Recent advances in PCB removal from historically contaminated environmental matrices

0553495 - MBÚ 2023 RIV GB eng J - Journal Article
Šrédlová, Kamila - Cajthaml, Tomáš
Recent advances in PCB removal from historically contaminated environmental matrices.
Chemosphere. Roč. 287, JAN 2022 (2022), č. článku 132096. ISSN 0045-6535. E-ISSN 1879-1298
Institutional support: RVO:61388971
Keywords : polychlorinated-biphenyls pcbs * zero-valent iron * activated carbon * thermal-desorption * in-situ * heavy-metals * electrokinetic remediation * reduces bioaccumulation * anaerobic degradation * river sediments * Bioremediation * Incineration * Nanoremediation * Phytoremediation * Polychlorinated biphenyls
OECD category: Microbiology
Impact factor: 8.8, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0045653521025686?via%3Dihub

Despite being drastically restricted in the 1970s, polychlorinated biphenyls (PCBs) still belong among the most hazardous contaminants. The chemical stability and dielectric properties of PCBs made them suitable for a number of applications, which then lead to their ubiquitous presence in the environment. PCBs are highly bioaccumulative and persistent, and their teratogenic, carcinogenic, and endocrine-disrupting features have been widely reported in the literature. This review discusses recent advances in different techniques and approaches to remediate historically contaminated matrices, which are one of the most problematic in regard to decontamination feasibility and efficiency. The current knowledge published in the literature shows that PCBs are not sufficiently removed from the environment by natural processes, and thus, the suitability of some approaches (e. g., natural attenuation) is limited. Physicochemical processes are still the most effective
however, their extensive use is constrained by their high cost and often their destructiveness toward the matrices. Despite their limited reliability, biological methods and their application in combinations with other techniques could be promising. The literature reviewed in this paper documents that a combination of techniques differing in their principles should be a future research direction. Other aspects discussed in this work include the incompleteness of some studies. More attention should be given to the evaluation of toxicity during these processes, particularly in terms of monitoring different modes of toxic action. In addition, decomposition mechanisms and products need to be sufficiently clarified before combined, tailor-made approaches can be employed.
Permanent Link: http://hdl.handle.net/11104/0331808