Removal of tetracycline by aerobic granular sludge and its bacterial community dynamics in SBR

Wang, Xiaochun; Chen, Zhonglin; Kang, Jing; Zhao, Xia; Shen, Jimin

doi:10.1039/c8ra01357h

Cited by 70 publications

(12 citation statements)

References 31 publications

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“…Furthermore, they produce extracellular polymeric substances, assisting cell aggregation [ 11 ]. The settling velocity and BOD 5 degradation were strongly correlated with the Leadbetterella genus that has been suggested as a group of functional syntrophic organic compound-degrading bacteria [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

Total and Metabolically Active Microbial Community of Aerobic Granular Sludge Systems Operated in Sequential Batch Reactors: Effect of Pharmaceutical Compounds

Muñoz-Palazon

Rosa-Masegosa

Hurtado-Martinez

et al. 2021

Toxics

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Two aerobic granular sludge (AGS) sequential batch reactors were operated at a mild (15 °C) temperature for 180 days. One of those bioreactors was exposed to a mixture of diclofenac, naproxen, trimethoprim, and carbamazepine. The AGS system, operating under pressure from emerging contaminants, showed a decrease in COD, BOD5, and TN removal capacity, mainly observed during the first 100 days, in comparison with the removal ratios detected in the control bioreactor. After an acclimatisation period, the removal reached high-quality effluent for COD and TN, close to 95% and 90%, respectively. In the steady-state period, trimethoprim and diclofenac were successfully removed with values around 50%, while carbamazepine and naproxen were more recalcitrant. The dominant bacterial OTUs were affected by the presence of a mixture of pharmaceutical compounds, under which the dominant phylotypes changed to OTUs classified among the Pseudomonas, Gemmobacter, and Comamonadaceae. The RT-qPCR and qPCR results showed the deep effects of pharmaceutical compounds on the number of copies of target genes. Statistical analyses allowed for linking the total and active microbial communities with the physico-chemical performance, describing the effects of pharmaceutical compounds in pollution degradation, as well as the successful adaptation of the system to treat wastewater in the presence of toxic compounds.

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Section: Resultsmentioning

confidence: 99%

Total and Metabolically Active Microbial Community of Aerobic Granular Sludge Systems Operated in Sequential Batch Reactors: Effect of Pharmaceutical Compounds

Muñoz-Palazon

Rosa-Masegosa

Hurtado-Martinez

et al. 2021

Toxics

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show abstract

“…The removal of TC from wastewater using ARG in a sequential batch reactor (SBR) could give 90% of TC removal along with high removal efficiency of COD, NH 4 + -N, and TP. 139 The bionanocomposite alginate beads (BNC) comprises of Fe 3 O 4 , TiO 2 , and dead biomass of TC-resistant bacteria Acinetobacter sp. used in a photobioreactor for the continuous TC degradation and adsorption, and the results showed 98% TC removal under UV-C irradiation.…”

Section: Green Nanomaterials/nanocompositesmentioning

confidence: 99%

A review on tetracycline removal from aqueous systems by advanced treatment techniques

et al. 2020

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“…One exciting aspect of the application of AGS is the removal of pharmaceutical and personal care products in wastewater (Xia et al, 2014;Zhao et al, 2014;Wang et al, 2016). For instance, Chryseobacterium, Actinotignum, Lactococcus, Shinella, and Clavibacter have been facilitating the removal of tetracycline (Wang et al, 2018). The removal of prednisolone, naproxen, sulphamethoxazole and ibuprofen was enabled by antibiotic-resistant genes carrier such as Firmicutes sp., Aeromonas sp.…”

Section: Sewage Millionaire-flocs In Wastewater Treatmentmentioning

confidence: 99%

Non-surface Attached Bacterial Aggregates: A Ubiquitous Third Lifestyle

Cai

2020

Front. Microbiol.

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Bacteria are now generally believed to adopt two main lifestyles: planktonic individuals, or surface-attached biofilms. However, in recent years medical microbiologists started to stress that suspended bacterial aggregates are a major form of bacterial communities in chronic infection sites. Despite sharing many similarities with surface-attached biofilms and are thus generally defined as biofilm-like aggregates, these non-attached clumps of cells in vivo show much smaller sizes and different formation mechanisms. Furthermore, ex vivo clinical isolates were frequently reported to be less attached to abiotic surfaces when compared to standard type strains. While this third lifestyle is starting to draw heavy attention in clinical studies, it has a long history in natural and environmental sciences. For example, marine gel particles formed by bacteria attachment to phytoplankton exopolymers have been well documented in oceans; large river and lake snows loaded with bacterial aggregates are frequently found in freshwater systems; multispecies bacterial “flocs” have long been used in wastewater treatment. This review focuses on non-attached aggregates found in a variety of natural and clinical settings, as well as some recent technical developments facilitating aggregate research. The aim is to summarise the characteristics of different types of bacterial aggregates, bridging the knowledge gap, provoking new perspectives for researchers from different fields, and highlighting the importance of more research input in this third lifestyle of bacteria closely relevant to our daily life.

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Removal of tetracycline by aerobic granular sludge and its bacterial community dynamics in SBR

Abstract: A lab-scale aerobic granular sludge sequencing batch reactor was introduced to explore the performance, formation and microbial succession of granular sludge for effectively removing tetracycline.

Cited by 70 publications

References 31 publications

Total and Metabolically Active Microbial Community of Aerobic Granular Sludge Systems Operated in Sequential Batch Reactors: Effect of Pharmaceutical Compounds

Total and Metabolically Active Microbial Community of Aerobic Granular Sludge Systems Operated in Sequential Batch Reactors: Effect of Pharmaceutical Compounds

A review on tetracycline removal from aqueous systems by advanced treatment techniques

Non-surface Attached Bacterial Aggregates: A Ubiquitous Third Lifestyle

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