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Advanced Nano-Bio Technologies for Water and Soil Treatment
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SYSNO ASEP 0524700 Document Type M - Monograph Chapter R&D Document Type Monograph Chapter Title Field Study IX: Pilot-Scale Composting of PAH-Contaminated Materials: Two Different Approaches Author(s) Innemanová, P. (CZ)
Cajthaml, Tomáš (MBU-M) RID, ORCIDSource Title Advanced Nano-Bio Technologies for Water and Soil Treatment. - Cham : Springer Nature Switzerland AG, 2020 / Filip Jan ; Cajthaml Tomáš ; Najmanová Petra ; Černík Miroslav ; Zbořil Radek - ISSN 2570-2165 - ISBN 978-3-030-29839-5 Pages s. 527-534 Number of pages 8 s. Number of pages 657 Publication form Print - P Language eng - English Country CH - Switzerland Keywords Composting ; Bioremediation ; PAHs ; Supercritical fluid extraction ; Bioavailability Subject RIV EI - Biotechnology ; Bionics OECD category Environmental biotechnology R&D Projects TE01020218 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support MBU-M - RVO:61388971 UT WOS 000674459400027 DOI 10.1007/978-3-030-29840-1_25 Annotation Results of this field study describe composting of two different PAH-contaminated materials (soils originated from four industrial sites and creosote-treated railway crossties). Sequential mild supercritical fluid extraction (SFE) was employed to estimate the fast-release fractions (F) of PAHs in order to predict bioaccessible portion of PAHs in the materials. These values were consequently compared with the real biodegradation data obtained from the two pilotscale experiments in order to investigate whether the bioaccessible data can be used as a prediction parameter of the degradation efficiency. The final results of the PAH elimination ranged between 62.4% and 92.9% in the case of the soil samples and between 81.4% and 97.0% for two different treatments of contaminated railway crossties. The results showed that the elimination efficiency decreased with the increasing number of aromatic rings in the PAH molecules. Estimation of the bioaccessible fraction of PAHs using the SFE method has been proven to be a useful tool for prediction of the bioremediation process efficiency. This fact is particularly important because if the composting method is employed in the full scale, any addition of the necessary bulking agent leads to the final increase in the total amount of the treated hazardous wastes if the remediation process fails.
Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2021
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