Biodegradation of persistent organics can overcome adsorption–desorption hysteresis in biological activated carbon systems

Abromaitis, Vytautas; Račys, Viktoras; Marel, P. van der; Meulepas, Roel J.W.

doi:10.1016/j.chemosphere.2016.01.085

Cited by 46 publications

(15 citation statements)

References 29 publications

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“…Furthermore, a biofilm covered activated carbon systems can maintain long solid retention times thereby biodegrading persistent organics at a low growth rate (Aktaş and Eçen, 2007). One drawback of biofilm covered activated carbon system is that some slow growing PCB dechlorinating microorganisms might be bloom-growing thus affected by other easily-degradable organic compounds or pollutants (Abromaitis et al, 2016). For example, some researchers pointed out that the concentration of persistent organic compounds (e.g., PCBs) in a municipal wastewater treatment plant effluent is very low (0.019-1.7 µg/L), though the biochemical oxygen demand of secondary effluent is generally between 1.7 and 7.7 mg/L (Deblonde et al, 2011;Abromaitis et al, 2016).…”

Section: Possibility Of Pcb Remediation Using Multi-technology Pcbs Rmentioning

confidence: 99%

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Jing

Fusi

Kjellerup

2018

Front. Environ. Sci.

110

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Polychlorinated biphenyls (PCBs) are one of the persistent organic pollutants (POPs) used worldwide between the 1930 and 1980s. Many PCBs can still be found in the environment such as in soils and sediments, even though their use has been heavily restricted. This review summarizes the most frequent remediation solutions including, phytoremediation, microbial degradation, dehalogenation by chemical reagent, and PCBs removal by activated carbon. New insights that emerged from recent studies of PCBs remediation including supercritical water oxidation, ultrasonic radiation, bimetallic systems, nanoscale zero-valent iron based reductive dehalogenation and biofilm covered activated carbon, electrokinetic remediation, and nZVI particles in combination with a second metal are overviewed. Some of these methods are still in the initial development stage thereby requiring further research attention. In addition, the advantages and disadvantages of each general treatment strategy and promising technology for PCBs remediation are discussed and compared. There is no well-developed single technology, although various possible technologies have been suggested. Therefore, the possibility of using combined technologies for PCB remediation is also here investigated. It is hoped that this present paper can provide a basic framework and a more profound prospect to select successful PCB remediation strategies or combined technologies.

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Section: Possibility Of Pcb Remediation Using Multi-technology Pcbs Rmentioning

confidence: 99%

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Jing

Fusi

Kjellerup

2018

Front. Environ. Sci.

110

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“…Similar findings were reported in water-sediment recirculating flumes and sediment microcosms (Mechelke et al 2020 ; Posselt et al 2020 ; Rutere et al 2020a ). The significant contribution of biodegradation in the removal of metoprolol has further been demonstrated in other diverse matrices such as riverbank filtration systems, WWTPs, subsurface flow constructed wetlands, biological activated carbon systems, and surface water (Abromaitis et al 2016 ; Li and McLachlan 2019 ; Rubirola et al 2014 ; Rühmland et al 2015 ; Schmidt et al 2007 ). The contribution of sorption to the overall removal of metoprolol from the aqueous phase may vary due to factors influencing its interaction with sediments, such as pH and organic matter content (Schaper et al 2019 ).…”

Section: Discussionmentioning

confidence: 94%

Biodegradation of metoprolol in oxic and anoxic hyporheic zone sediments: unexpected effects on microbial communities

Rutere

Posselt

et al. 2021

Appl Microbiol Biotechnol

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Metoprolol is widely used as a beta-blocker and considered an emerging contaminant of environmental concern due to pseudo persistence in wastewater effluents that poses a potential ecotoxicological threat to aquatic ecosystems. Microbial removal of metoprolol in the redox-delineated hyporheic zone (HZ) was investigated using streambed sediments supplemented with 15 or 150 μM metoprolol in a laboratory microcosm incubation under oxic and anoxic conditions. Metoprolol disappeared from the aqueous phase under oxic and anoxic conditions within 65 and 72 days, respectively. Metoprolol was refed twice after initial depletion resulting in accelerated disappearance under both conditions. Metoprolol disappearance was marginal in sterile control microcosms with autoclaved sediment. Metoprolol was transformed mainly to metoprolol acid in oxic microcosms, while metoprolol acid and α-hydroxymetoprolol were formed in anoxic microcosms. Transformation products were transient and disappeared within 30 days under both conditions. Effects of metoprolol on the HZ bacterial community were evaluated using DNA- and RNA-based time-resolved amplicon Illumina MiSeq sequencing targeting the 16S rRNA gene and 16S rRNA, respectively, and were prominent on 16S rRNA rather than 16S rRNA gene level suggesting moderate metoprolol-induced activity-level changes. A positive impact of metoprolol on Sphingomonadaceae and Enterobacteriaceae under oxic and anoxic conditions, respectively, was observed. Nitrifiers were impaired by metoprolol under oxic and anoxic conditions. Collectively, our findings revealed high metoprolol biodegradation potentials in the hyporheic zone under contrasting redox conditions associated with changes in the active microbial communities, thus contributing to the attenuation of micropollutants. Key points • High biotic oxic and anoxic metoprolol degradation potentials in the hyporheic zone. • Key metoprolol-associated taxa included Sphingomonadaceae, Enterobacteraceae, and Promicromonosporaceae. • Negative impact of metoprolol on nitrifiers.

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“…The removal of certain CECs, such as N,N-Diethyl-meta-toluamide (DEET), naproxen, and ibuprofen, has been shown to be improved with a higher EBCT of 14 min compared to 5 min in biofilters containing anthracite (Hallé, Huck, & Peldszus, 2015), demonstrating that these compounds are primarily removed by biodegradation. There are other studies showing the importance of BAC in the biodegradation of CECs (Abromaitis, Racys, van der Marel, & Meulepas, 2016;Greenstein, Lew, Dickenson, & Wert, 2018;Nugroho, Reungoat, & Keller, 2010). Furthermore, although GAC units are intended to sorb CECs, in fact, they will be readily colonized by microorganisms that could also contribute to CEC removal (Rattier, Reungoat, Gernjak, Joss, & Keller, 2012).…”

Section: Introductionmentioning

confidence: 98%

Implementing Ozone‐BAC‐GAC in potable reuse for removal of emerging contaminants

et al. 2020

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Removal of contaminants of emerging concern (CECs) is an important consideration in potable reuse. The effectiveness of ozonation, biologically activated carbon (BAC) filtration, and granular activated carbon (GAC) adsorption was assessed in the removal of 96 CECs. During phase 1, O3/total organice carbon (TOC) was varied between 0 and 1.5. Ozone was successful in removing CECs, achieving a total CEC concentration of 20.5 μg/L at an O3/TOC of 1.5 compared with 70 μg/L in absence of ozone. CECs such as iohexol, meprobamate, sucralose and flame retardants, tris(2‐carboxyethyl)phosphine (TCEP), tris(1‐chloro‐2‐propyl) phosphate (TCPP), and tris(1,3‐dichloro‐2‐propyl)phosphate (TDCPP) were detected in the ozone effluent even at the highest ozone dose. BAC filters did not contribute measurably to CEC removal, while the 20‐min empty bed contact time (EBCT) GAC removed 57.6% of the influent CEC concentration, even though the adsorption capacity had been exerted through previous operation. During phase 2, the average O3/TOC ratio was 0.64, and the impact of new GAC media on CEC removal was studied. EBCT was maintained at 15 min for both GAC contactors, while the used GAC (133,600 bed volume [BV]) was replaced with new media in one GAC contactor. The GAC with new media removed CECs below the limit of quantitation, up to 10,000 BV, while removal decreased to 70% after 20,000 BV, with seven CECs—sucralose, iohexol, acesulfame‐k, meprobamate, cotinine, primidone, and acetaminophen—being detected. Ozone doses for CEC removal and BV needed for adsorption of CECs on activated carbon can be determined from this study. Thus, the results from this study can help design and optimize ozone, BAC, and GAC systems used for potable reuse to target the removal of specific CECs.

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Biodegradation of persistent organics can overcome adsorption–desorption hysteresis in biological activated carbon systems

Cited by 46 publications

References 29 publications

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Biodegradation of metoprolol in oxic and anoxic hyporheic zone sediments: unexpected effects on microbial communities

Implementing Ozone‐BAC‐GAC in potable reuse for removal of emerging contaminants

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