Use of microalgae based technology for the removal of antibiotics from wastewater: A review

Leng, Lijian; Liang, Wei; Xiong, Qin; Xu, Siyu; Li, Wenting; Lv, Sen; Lu, Qian; Wan, Liping; Wen, Zhiyou; Zhou, Wenguang

doi:10.1016/j.chemosphere.2019.124680

Cited by 311 publications

(105 citation statements)

References 115 publications

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“…Therefore, considerable effort has been made in recent years to identify an optimal treatment method to remove antibiotics from wastewater. Thus, the possibility of removing the antibiotics through adsorption [5,6], advanced oxidation [7,8], and biological processes has been intensively studied [9][10][11]. Of all these methods, photocatalytic oxidation, and especially heterogeneous photocatalysis with TiO 2 , has received particular attention due to the advantages that this method offers [12].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Ampicillin Using PLA/TiO2 Hybrid Nanofibers Coated on Different Types of Fiberglass

Bobiricǎ

Râpă

et al. 2020

Water

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New photocatalytic membranes based on polylactic acid (PLA)/TiO2 hybrid nanofibers deposited on fiberglass supports were prepared and tested for the removal of ampicillin from aqueous solutions. The electrospinning technique was used to obtain hybrid nanofibers that were deposited on three types of fiberglass with different structures, resulting in three distinct photocatalytic membranes namely fiberglass fabric plain woven-type membrane, fiberglass mat-type membrane, and fiberglass fabric one-fold edge-type membrane. The results of the photocatalytic tests showed that the highest efficiency of ampicillin removal from aqueous solution is obtained with the fiberglass fabric plain woven-type membrane. Although it has been shown that the rate of photocatalytic degradation of ampicillin is high, being practically eliminated within the first 30 min of photocatalysis, the degree of mineralization of the aqueous solution is low even after two hours of photocatalysis due to the degradation of PLA from the photocatalytic membrane. The instability of PLA in the reactive environment of the photocatalytic reactor, evidenced by morphological, mineralogical and spectroscopic analyzes as well as by kinetic studies, is closely related to the structure of the fiberglass membrane used as a support for PLA/TiO2 hybrid nanofibers.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Ampicillin Using PLA/TiO2 Hybrid Nanofibers Coated on Different Types of Fiberglass

Bobiricǎ

Râpă

et al. 2020

Water

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“…Concerns with the environmental impact and threat to public health led to the development of several studies about the ability of microalgae to degrade such pollutants with toxic effect on the environment at low concentrations [17]. Literature reveals that microalgae can degrade pharmaceuticals [15,16]. For instance, Chlamydomonas oblonga (Chlorophyta) was exposed to 200 mg/L of an emergent contaminant, carbamazepine, a pharmaceutical used in the treatment of epilepsy, and a 30% growth inhibition and a 35% degradation rate of the pollutant was registered [69].…”

Section: Content Analysismentioning

confidence: 99%

Microalgae Water Bioremediation: Trends and Hot Topics

et al. 2020

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The need to reduce costs associated with the production of microalgae biomass has encouraged the coupling of process with wastewater treatment. Emerging pollutants in municipal, industrial, and agricultural wastewaters, ranging from pharmaceuticals to metals, endanger public health and natural resources. The use of microalgae has, in fact, been shown to be an efficient method in water-treatment processes and presents several advantages, such as carbon sequestration, and an opportunity to develop innovative bioproducts with applications to several industries. Using a bibliometric analysis software, SciMAT, a mapping of the research field was performed, analyzing the articles produced between 1981 and 2018, aiming to identifying the hot topics and trends studied until now. The application of microalgae on water bioremediation is an evolving research field that currently focuses on developing efficient and cost-effective treatments methods that also enable the production of add-value products, leading to a blue and circular economy.

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“…Both Pseudomonas and Sulfitobacter phylotypes prevailed in the DRB assemblage of mixotrophic P. bursaria reared in media with an antibiotic concentration up to 20 mg/L, indicating high antibiotic resistance of these bacteria and that the intracellular environment may provide a favorable habitat for their survival. Indeed, it has been demonstrated that many Pseudomonas species could degrade antibiotics via efflux pumps (e.g., Jiang et al, 2014), and consortiums of these bacterial species with algae could enhance the efficiency of degrading antibiotics (Leng et al, 2020). Similarly, genes involved in aromatic compound catabolism and a type IV secretion system are present in the genome of a strain of Sulfitobacter (Ankrah et al, 2014), and Sulfitobacter in the diatom phycosphere could supply indole acetic acid to the algae in exchange for organosulfur compounds (Amin et al, 2015).…”

Section: Evidence For Prevalent Antibiotic-resistant Bacteria Sheltermentioning

confidence: 99%

Environmental Factors and Pollution Stresses Select Bacterial Populations in Association With Protists

Zou

Zhang

et al. 2020

Front. Mar. Sci.

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Digestion-resistant bacteria (DRB) refer to the ecological bacterial group that can be ingested, but not digested by protistan grazers, thus forming a specific type of bacteria-protist association. To test the hypothesis that the environment affects the assembly of DRB in protists, a mixotrophic ciliate, Paramecium bursaria, and a heterotrophic ciliate, Euplotes vannus, were reared at different temperatures, light conditions, and concentration gradients of antibiotic oxytetracycline and heavy metals. Community profiling indicated that the composition of DRB in both species varied significantly across the manipulated conditions, except for in P. bursaria under light/dark treatments. Clone library analysis of bacterial 16S rRNA genes showed that DRB were diverse. Pseudomonas became more abundant during the warmer treatment of P. bursaria, whereas the dominance of Pseudoalteromonas weakened and Vibrio became more abundant in E. vannus at a higher temperature. During the treatment of diel light:dark cycles, Aestuariibacter and Alteromonas were selected for in E. vannus but not Pseudoalteromonas, which was highly represented in the all-light and alldark treatments. In contrast, P. bursaria consistently hosted Nevskia, Curvibacter, and Asticcacaulis under all light conditions. There were many bacterial species co-resistant to oxytetracycline and to protistan digestion, in which Sphingomonas, Alteromonas, Aestuariibacter, Puniceicoccaceae (Verrucomicrobia), Pseudomonas, and Sulfitobacter were frequently abundant. Flectobacillus and Aestuariibacter were major lead-resistant bacteria associated with the studied protists. Acinetobacter and Hydrogenophaga were abundant in the P. bursaria treated with a high dose of mercury. Aestuariibacter was found as a dominant group of DRB in E. vannus across all cadmium treatments. In summary, this study demonstrates for the first time that environmental stress selects for bacterial populations associated with protists and that there are diverse bacterial species that not only are resistant to pollution stresses but can also survive protistan predation. This work highlights that bacteria-protists associations need to be taken into account in understanding ecological and environmental issues, such as resilience of bacterial community and function, microbial co-occurrence, and quantity and distribution of antibiotic resistant bacteria and genes.

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Use of microalgae based technology for the removal of antibiotics from wastewater: A review

Cited by 311 publications

References 115 publications

Photocatalytic Degradation of Ampicillin Using PLA/TiO2 Hybrid Nanofibers Coated on Different Types of Fiberglass

Photocatalytic Degradation of Ampicillin Using PLA/TiO2 Hybrid Nanofibers Coated on Different Types of Fiberglass

Microalgae Water Bioremediation: Trends and Hot Topics

Environmental Factors and Pollution Stresses Select Bacterial Populations in Association With Protists

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