| Autor: |
Remmas N; Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Xanthi, Greece.; Laboratory of Ecological Engineering and Technology, Department of Civil Engineering, Democritus University of Thrace, Xanthi, Greece., Manfe N; Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Xanthi, Greece.; Department of Civil, Environmental and Architectural Engineering, University of Padua, Padua, Italy., Raga R; Department of Civil, Environmental and Architectural Engineering, University of Padua, Padua, Italy., Akratos C; Laboratory of Ecological Engineering and Technology, Department of Civil Engineering, Democritus University of Thrace, Xanthi, Greece. |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering [J Environ Sci Health A Tox Hazard Subst Environ Eng] 2022; Vol. 57 (9), pp. 764-772. Date of Electronic Publication: 2022 Aug 10. |
| DOI: |
10.1080/10934529.2022.2110478 |
| Abstrakt: |
Landfill leachate, due to its recalcitrant nature and toxicity, poses a serious environmental threat, which requires the implementation of effective treatment processes. In this work, a full-scale treatment system consisting of two Sequencing Batch Reactors (SBRs) was used for the processing of landfill leachate of intermediate to mature age (BOD/COD ratio of 0.16). Biosystem operation resulted in BOD 5 , COD and TKN removal efficiencies of 81%, 39% and 76%, respectively, whereas the low residual NO 3 - -N concentration in the effluent (4.01 ± 0.10 mg/L) was indicative of the efficient denitrification process. Assessment of hydrolytic potential of activated sludge revealed high endocellular and extracellular lipase activities, which reached values up to 206 and 141 U/g protein respectively, possibly as the consequence of plastics degradation during maturation process. Implementation of Illumina sequencing indicated the predominance of Alphaproteobacteria , accompanied by members of Bacteroidetes , Betaproteobacteria and Chloroflexi . Paracoccus was the predominant genus identified, followed by representatives of the genera Bellilinea , Flavobacterium , Thauera and Truepera . Nitrosomonas was the major ammonia-oxidizing bacterium (AOB), while nitrite oxidation was mainly achieved by the uncultured nitrite-oxidizing bacterium (NOB) Candidatus Nitrotoga. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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