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Castellano-Hinojosa A, Gallardo-Altamirano MJ, González-Martínez A, González-López J. Novel insights into the impact of anticancer drugs on the performance and microbial communities of a continuous-flow aerobic granular sludge system. BIORESOURCE TECHNOLOGY 2024; 394:130195. [PMID: 38081471 DOI: 10.1016/j.biortech.2023.130195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 02/04/2024]
Abstract
Anticancer drugs are frequently found in domestic wastewater, but knowledge of their impacts on wastewater treatment processes is limited. The effects of three levels of concentrations (low, medium, and high) of three anticancer drugs on physicochemical parameters and prokaryotic communities of a continuous-flow aerobic granular sludge (AGS) system were examined. Drugs at medium and high concentrations reduced the removal of total nitrogen and organic matter during the first 15 days of operation by approximately 15-20 % compared to a control, but these effects disappeared afterward. Removal efficiencies of drugs were in the range of 51.2-100 % depending on the concentration level. Drugs at medium and high concentrations reduced the abundance and diversity and altered the composition of prokaryotic communities. Specific taxa were linked to variations in performance parameters after the addition of the drugs. This study provides improved knowledge of the impacts of anticancer drugs in AGS systems operated in continuous-flow reactor.
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Affiliation(s)
- Antonio Castellano-Hinojosa
- Department of Microbiology, Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, Granada 18071, Spain.
| | - Manuel J Gallardo-Altamirano
- Department of Microbiology, Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, Granada 18071, Spain
| | - Alejandro González-Martínez
- Department of Microbiology, Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, Granada 18071, Spain
| | - Jesús González-López
- Department of Microbiology, Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, Granada 18071, Spain
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Castellano-Hinojosa A, Gallardo-Altamirano MJ, González-López J, González-Martínez A. Anticancer drugs drive changes in the performance, abundance, diversity, and composition of eukaryotic communities of an aerobic granular sludge system. CHEMOSPHERE 2023; 345:140374. [PMID: 37844701 DOI: 10.1016/j.chemosphere.2023.140374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/30/2023] [Accepted: 10/04/2023] [Indexed: 10/18/2023]
Abstract
Anticancer drugs are emerging contaminants that are being increasingly detected in urban wastewater. However, there is limited knowledge on the use of biological wastewater treatments, such as granular sludge systems (AGSs), to remove these substances and on their impacts on the general performance of the system and the eukaryotic communities in the granules. We investigated the impacts of three anticancer drugs commonly found in wastewater treatment plants and applied at three different concentrations on the removal efficiency of anticancer drugs, physicochemical parameters, and the eukaryotic microbiome of an AGS operated in a sequential batch reactor (SBR). Anticancer drugs applied at medium and high concentrations significantly decreased the removal efficiency of total nitrogen, the granular biomass concentration, and the size and setting velocity of granules. However, these effects disappeared after not adding the drugs for about a month thus showing the plasticity of the system to return to original levels. Regardless of the concentration of anticancer drugs tested, the AGS technology was effective in removing these substances, with removal rates in the range of 68.5%-100%. The presence of anticancer drugs at medium and high concentrations significantly decreased the abundance of total fungi, an effect that was linked to changes in the physicochemical parameters. Anticancer drugs also induced decreases in the diversity of the eukaryotic community, altered the community composition, and reduced the network complexity when applied at medium and high concentrations. Taxa responsive to the presence of anticancer drugs were identified. The diversity and composition of the eukaryotic microbiome returned to original diversity levels after not adding the drugs for about a month. Overall, this study increases our understanding of the impacts of anticancer drugs on the performance and eukaryotic microbiome of an AGS and highlights the need for monitoring these substances.
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Affiliation(s)
| | | | - Jesús González-López
- Institute of Water Research, University of Granada, C/Ramon y Cajal, 4, 18071, Granada, Spain
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Bodle KB, Pernat MR, Kirkland CM. Pharmaceutical Sorption to Lab Materials May Overestimate Rates of Removal in Lab-Scale Bioreactors. WATER, AIR, AND SOIL POLLUTION 2022; 233:505. [PMID: 36504545 PMCID: PMC9731345 DOI: 10.1007/s11270-022-05974-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Environmental contamination from pharmaceuticals has received increased attention from researchers in the past 20 years. As such, numerous lab-scale studies have sought to characterize the effects of these contaminants on various targets, as well as determine improved removal methods. Many studies have used lab-scale bioreactors to investigate pharmaceutical effects on wastewater bacteria, as wastewater treatment plants often act as reservoirs for pharmaceuticals. However, few-if any-of these studies report the specific lab materials used during testing, such as tubing or pipette tip type. In this study, the pharmaceuticals erythromycin, diclofenac, and gemfibrozil were exposed to different micropipette tips, syringe filters, and tubing types, and losses over time were evaluated. Losses to tubing and syringe filters were particularly significant and neared 100%, depending on the pharmaceutical compound and length of exposure time. Results discussed herein indicate that pharmaceutical sorption to various lab supplies results in decreases to both dosed and quantified pharmaceutical concentrations. Studies that fail to consider this source of loss may therefore draw inaccurate conclusions about pharmaceutical effects or removal efficiencies.
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Affiliation(s)
- Kylie B Bodle
- Department of Civil Engineering, Montana State, University, 205 Cobleigh Hall, Bozeman, MT, USA
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, USA
| | - Madeline R Pernat
- Department of Civil Engineering, Montana State, University, 205 Cobleigh Hall, Bozeman, MT, USA
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, USA
| | - Catherine M Kirkland
- Department of Civil Engineering, Montana State, University, 205 Cobleigh Hall, Bozeman, MT, USA
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, USA
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Rosa-Masegosa A, Perez-Bou L, Muñoz-Palazon B, Monteoliva-García A, Gonzalez-Martinez A, Gonzalez-Lopez J, Correa-Galeote D. Effects of sulphur amino acids on the size and structure of microbial communities of aerobic granular sludge bioreactors. Amino Acids 2022; 54:1403-1419. [PMID: 35612670 PMCID: PMC9637606 DOI: 10.1007/s00726-022-03168-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/27/2022] [Indexed: 12/07/2022]
Abstract
Granular activated sludge has been described as a promising tool in treating wastewater. However, the effect of high concentrations of sulphur amino acids, cysteine and methionine, in the evolution, development and stability of AGS-SBRs (aerobic granular sludge in sequential batch reactors) and their microbial communities is not well-established. Therefore, this study aimed to evaluate microbial communities' size, structure and dynamics in two AGS-SBRs fed with two different concentrations of amino acids (50 and 100 mg L−1 of both amino acids). In addition, the impact of the higher level of amino acids was also determined under an acclimatization or shock strategy. While N removal efficiency decreased with amino acids, the removal of the organic matter was generally satisfactory. Moreover, the abrupt presence of both amino acids reduced even further the removal performance of N, whereas under progressive adaptation, the removal yield was higher. Besides, excellent removal rates of cysteine and methionine elimination were found, in all stages below 80% of the influent values. Generally considered, the addition of amino acids weakly impacts the microbial communities' total abundances. On the contrary, the presence of amino acids sharply modulated the dominant bacterial structures. Furthermore, the highest amino acid concentration under the shock strategy resulted in a severe change in the structure of the microbial community. Acidovorax, Flavobacterium, Methylophilus, Stenotrophomonas and Thauera stood out as the prominent bacteria to cope with the high presence of cysteine and methionine. Hence, the AGS-SBR technology is valuable for treating influents enriched in sulphur Aa inclusively when a shock strategy was used.
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Affiliation(s)
- Aurora Rosa-Masegosa
- Microbiology Department, Faculty of Pharmacy, University of Granada, Andalucía, 18071, Granada, Spain.,Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Andalucía, 18071, Granada, Spain
| | - Lizandra Perez-Bou
- Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Andalucía, 18071, Granada, Spain.,Microbial Biotechnology Group, Microbiology and Virology Department, Faculty of Biology, University of Habana, Habana, Cuba
| | - Barbara Muñoz-Palazon
- Microbiology Department, Faculty of Pharmacy, University of Granada, Andalucía, 18071, Granada, Spain. .,Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Andalucía, 18071, Granada, Spain.
| | | | - Alejandro Gonzalez-Martinez
- Microbiology Department, Faculty of Pharmacy, University of Granada, Andalucía, 18071, Granada, Spain.,Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Andalucía, 18071, Granada, Spain
| | - Jesus Gonzalez-Lopez
- Microbiology Department, Faculty of Pharmacy, University of Granada, Andalucía, 18071, Granada, Spain.,Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Andalucía, 18071, Granada, Spain
| | - David Correa-Galeote
- Microbiology Department, Faculty of Pharmacy, University of Granada, Andalucía, 18071, Granada, Spain. .,Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Andalucía, 18071, Granada, Spain.
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