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Martins GS, Rodrigues T, Lamarca RS, Ayala-Durán SC, da Silva BF, de Lima Gomes PCF. Continuous removal of caffeine in a horizontal-flow anaerobic immobilized biomass bioreactor: identification of transformation products. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:107759-107771. [PMID: 37740804 DOI: 10.1007/s11356-023-29875-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/10/2023] [Indexed: 09/25/2023]
Abstract
Anaerobic bioreactors are an efficient technology for the biodegradation of emerging contaminants in environmental matrices. In this work, a horizontal-flow anaerobic immobilized biomass (HAIB) bioreactor was used to remove caffeine (CAF), which is frequently found in various aqueous matrices. The acrylic bench top bioreactor, with dimensions of 100 × 5.00 cm, was operated with a hydraulic retention time (HRT) of 12 h, during 45 weeks, under mesophilic conditions. The operation was performed in 4 phases: without CAF addition (phase I); CAF spiked at 300 μg L-1 (phase II); CAF at 600 μg L-1 (phase III); and CAF at 900 μg L-1 (phase IV). Samples of bioreactor influent and effluent were analyzed by liquid chromatography/tandem mass spectrometry (LC-MS/MS). The bioreactor removed organic matter (OM) and CAF with efficiencies of 88 and 93%, respectively. The first-order apparent removal constant (Kapp) values for OM and CAF were 0.419 and 0.304 h-1, respectively. Five transformation products (TPs) were identified, with m/z 243, 227, 211, and 181 (two products). The HAIB bioreactor is a suitable system for the removal of CAF present in wastewater, even at a concentration level of µg L-1.
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Affiliation(s)
- Giovana Silva Martins
- Sao Paulo State University Julio de Mesquita Filho, Institute of Chemistry, Araraquara, Sao Paulo, Brazil
| | - Thaís Rodrigues
- Sao Paulo State University Julio de Mesquita Filho, Institute of Chemistry, Araraquara, Sao Paulo, Brazil
- Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, National Institute for Alternative Technologies of Detection, São Paulo State University (UNESP), Rua Prof. Francisco Degni 55, Araraquara, SP, 14800-060, Brazil
| | - Rafaela Silva Lamarca
- Sao Paulo State University Julio de Mesquita Filho, Institute of Chemistry, Araraquara, Sao Paulo, Brazil
- Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, National Institute for Alternative Technologies of Detection, São Paulo State University (UNESP), Rua Prof. Francisco Degni 55, Araraquara, SP, 14800-060, Brazil
| | - Saidy Cristina Ayala-Durán
- Sao Paulo State University Julio de Mesquita Filho, Institute of Chemistry, Araraquara, Sao Paulo, Brazil
- Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, National Institute for Alternative Technologies of Detection, São Paulo State University (UNESP), Rua Prof. Francisco Degni 55, Araraquara, SP, 14800-060, Brazil
| | | | - Paulo Clairmont Feitosa de Lima Gomes
- Sao Paulo State University Julio de Mesquita Filho, Institute of Chemistry, Araraquara, Sao Paulo, Brazil.
- Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry, National Institute for Alternative Technologies of Detection, São Paulo State University (UNESP), Rua Prof. Francisco Degni 55, Araraquara, SP, 14800-060, Brazil.
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2
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Wu G, Qian Y, Fan F, Zhang Z, Zhang Y, Yu Q, Zhang X, Ren H, Geng J, Liu H. Revealing specific transformation pattern of sulfonamides during wastewater biological treatment processes by molecular networking nontarget screening. WATER RESEARCH 2023; 235:119895. [PMID: 36989798 DOI: 10.1016/j.watres.2023.119895] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/26/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Biotransformation of emerging contaminants (ECs) is of importance in various natural and engineered systems to eliminate the adverse effects of ECs toward organisms. In wastewater, structurally similar ECs may transform through similar reactions triggered by common enzymes. However, the transformation pattern for them was scarcely studied. To fill the research gaps, five sulfonamides were chosen as the targeted ECs with similar structure to explore the transformation pattern in wastewater biological treatment experiments at lab scale. Through molecular networking based nontarget screening, 45 transformation products (TPs) of sulfonamides were identified and 14 of them were newly found. On the basis, five specific transformation patterns were summarized for sulfonamides by transformation pathways comparing, reaction frequency analyzing and dominant TPs comparing. Results suggested that pterin-chelation and formylation (dominant transformation pathway) and acetylation, methylation and deamination reactions were commonly occurred for sulfonamides in wastewater. Among them, the role of formylation as the dominant transformation pathway for sulfonamides transformed in wastewater was firstly reported in present study. Subsequent frontier molecular orbital calculation suggested the active site of amino (N1H2-) may contribute the specific transformation pattern of sulfonamides. Present study reveals the specific transformation pattern of sulfonamides from the aspect of TPs and transformation pathways. In the future, knowledge on the specific transformation pattern can be used to regulate and enhance the removal of a class of ECs with similar structure rather than just one of ECs.
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Affiliation(s)
- Gang Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Yuli Qian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Fan Fan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Zhizhao Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Yao Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Qingmiao Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400044, China
| | - Xuxiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Jinju Geng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400044, China.
| | - Hualiang Liu
- Jiangsu Province Center for Disease Control and Prevention, Nanjing, Jiangsu, 210009, China.
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Ghasemi M, Khedri M, Didandeh M, Taheri M, Ghasemy E, Maleki R, Shon HK, Razmjou A. Removal of Pharmaceutical Pollutants from Wastewater Using 2D Covalent Organic Frameworks (COFs): An In Silico Engineering Study. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00924] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mehdi Ghasemi
- Department of Petroleum Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran 1591634311, Iran
| | - Mohammad Khedri
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran 1591634311, Iran
| | - Mohsen Didandeh
- Department of Chemical Engineering, Tarbiat Modares University, Tehran 46414356, Iran
| | - Mojtaba Taheri
- Department of Chemical Engineering, University of Tehran, Tehran 141556455, Iran
| | - Ebrahim Ghasemy
- Centre Énergie Matériaux Télécommunications, Institut National de la recherché, 1650 Boul. Lionel-Boulet, Varennes, Quebec J3X 1S2, Canada
| | - Reza Maleki
- Department of Chemical Engineering, Shiraz University, Shiraz 71946, Iran
| | - Ho kyong Shon
- ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, Sydney 2007, New South
Wales, Australia
| | - Amir Razmjou
- School of Engineering, Edith Cowan University, Joondalup, Perth 6027, Western Australia, Australia
- UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering, University of New South Wales, Sydney 2052, New South
Wales, Australia
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4
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Dong Z, Yan X, Wang J, Zhu L, Wang J, Li C, Zhang W, Wen S, Kim YM. Mechanism for biodegradation of sulfamethazine by Bacillus cereus H38. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:152237. [PMID: 34890664 DOI: 10.1016/j.scitotenv.2021.152237] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 06/13/2023]
Abstract
Degradation of sulfonamides (SAs) by microorganisms has become a focus of current research. Sulfamethazine (SMZ) is a type of SA widely used in the livestock and poultry industry. However, understanding the intermediate products, degradation pathways and mechanism of SMZ biodegradation is limited at present. In this study, a SMZ degrading bacterium Bacillus cereus H38, which can use SMZ as its only carbon source, was isolated from farmland soil. The bacterium was gram-positive with rod-shaped cells. The effects of initial SMZ concentration, pH, temperature and amount of inoculation on the biodegradation of SMZ were investigated by a single factor experiment. The results showed that the maximum degradation rate of SMZ was achieved in the environmental conditions at an initial SMZ concentration of 5 mg/L, pH of 7.0, temperature of 25 °C and inoculation amount of 5%. Under these optimum degradation conditions, strain H38 can completely degrade SMZ within 3 days. The effects of intracellular enzymes, extracellular enzymes and periplasmic enzymes on the SMZ degradation process were compared. It was found that intracellular enzymes contributed the most to the biodegradation of SMZ, and the degradation rate approached 70%. Three possible intermediates were identified by LC-MS/MS, and two degradation pathways were proposed. Whole genome sequencing results showed that the genome size of strain H38 was 5,477,631 bp, including 5599 coding sequences (CDSs), and the GC content was 35.21%. In addition, functional annotation of CDSs was performed to analyze the metabolic pathways of nitrogen and sulfur in strain H38 combining genomics and bioinformatics. This study proposes new insights into the mechanism for biodegradation of SAs and will inform future research.
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Affiliation(s)
- Zikun Dong
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Xiaojing Yan
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Jinhua Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Lusheng Zhu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Jun Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Chenyu Li
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Wenjie Zhang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Shengfang Wen
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, People's Republic of China.
| | - Young Mo Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea.
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5
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Birolli WG, da Silva BF, Rodrigues-Filho E. Biodegradation of the fungicide Pyraclostrobin by bacteria from orange cultivation plots. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:140968. [PMID: 32763599 DOI: 10.1016/j.scitotenv.2020.140968] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 07/07/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
The pesticides belonging the strobilurin group are among the most common contaminants in the environment. In this work, biodegradation studies of the strobilurin fungicide Pyraclostrobin by bacteria from orange cultivation plots were performed aiming to contribute with the development of a bioremediation method. Experiments were performed in triplicate with validated methods, and optimization was performed by Central Composite Design and Response Surface Methodology. The strains were evaluated in liquid nutrient medium containing 100 mg L-1 of Pyraclostrobin, and decreased concentrations of 61.5 to 100.5 mg L-1 were determined after 5 days at 37 °C and 130 rpm, showing the importance of strain selection. When the five most efficient strains (Bacillus sp. CSA-13, Paenibacillus alvei CBMAI2221, Bacillus sp. CBMAI2222, Bacillus safensis CBMAI2220 and Bacillus aryabhattai CBMAI2223) were used in consortia, synergistic and antagonistic effects were observed accordingly to the employed combination of bacteria, resulting in 64.2 ± 3.9 to 95.4 ± 4.9 mg L-1 residual Pyraclostrobin. In addition, the formation of 1-(4-chlorophenyl)-1H-pyrazol-3-ol was quantified (0.59-0.01 mg L-1), and a new biodegradation pathway was proposed with 15 identified metabolites. Experiments were also performed in soil under controlled conditions (30 °C, 0-28 days, 100 mg kg-1 pesticide), and the native microbiome reduced the pesticide concentration to 70.4 ± 2.3 mg L-1, whereas the inoculation of an efficient bacterial consortium promoted clearly better results, 57.2 ± 3.9 mg L-1 residual Pyraclostrobin. This suggests that the introduction of these strains in soil in a bioaugmentation process increases decontamination. However, the native microbiome is important for a more efficient bioremediation.
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Affiliation(s)
- Willian Garcia Birolli
- Laboratory of Micromolecular Biochemistry of Microorganisms (LaBioMMi), Center for Exact Sciences and Technology, Federal University of São Carlos, Via Washington Luiz, km 235, 13.565-905, P.O. Box 676, São Carlos, SP, Brazil.
| | - Bianca Ferreira da Silva
- Institute of Chemistry, Department of Analytical Chemistry, São Paulo State University (UNESP), 14800-060, P.O. Box 355, Araraquara, SP, Brazil
| | - Edson Rodrigues-Filho
- Laboratory of Micromolecular Biochemistry of Microorganisms (LaBioMMi), Center for Exact Sciences and Technology, Federal University of São Carlos, Via Washington Luiz, km 235, 13.565-905, P.O. Box 676, São Carlos, SP, Brazil.
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6
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Yu YH, Su JF, Shih Y, Wang J, Wang PY, Huang CP. Hazardous wastes treatment technologies. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1833-1860. [PMID: 32866315 DOI: 10.1002/wer.1447] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
A review of the literature published in 2019 on topics related to hazardous waste management in water, soils, sediments, and air. The review covered treatment technologies applying physical, chemical, and biological principles for the remediation of contaminated water, soils, sediments, and air. PRACTICAL POINTS: This report provides a review of technologies for the management of waters, wastewaters, air, sediments, and soils contaminated by various hazardous chemicals including inorganic (e.g., oxyanions, salts, and heavy metals), organic (e.g., halogenated, pharmaceuticals and personal care products, pesticides, and persistent organic chemicals) in three scientific areas of physical, chemical, and biological methods. Physical methods for the management of hazardous wastes including general adsorption, sand filtration, coagulation/flocculation, electrodialysis, electrokinetics, electro-sorption ( capacitive deionization, CDI), membrane (RO, NF, MF), photocatalysis, photoelectrochemical oxidation, sonochemical, non-thermal plasma, supercritical fluid, electrochemical oxidation, and electrochemical reduction processes were reviewed. Chemical methods including ozone-based, hydrogen peroxide-based, potassium permanganate processes, and Fenton and Fenton-like process were reviewed. Biological methods such as aerobic, anoxic, anaerobic, bioreactors, constructed wetlands, soil bioremediation and biofilter processes for the management of hazardous wastes, in mode of consortium and pure culture were reviewed. Case histories were reviewed in four areas including contaminated sediments, contaminated soils, mixed industrial solid wastes and radioactive wastes.
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Affiliation(s)
- Yu Han Yu
- Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA
| | - Jenn Fang Su
- Department of Chemical and Materials Engineering, Tamkang University, New Taipei City, Taiwan
| | - Yujen Shih
- Graduate Institute of Environmental Essngineering, National Sun yat-sen University, Kaohsiung, Taiwan
| | - Jianmin Wang
- Department of Civil Architectural and Environmental Engineering, Missouri University of Science & Technology, Rolla, Missouri
| | - Po Yen Wang
- Department of Civil Engineering, Widener University, Chester, Pennsylvania, USA
| | - Chin Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USA
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da Silva THG, Furtado RXDS, Zaiat M, Azevedo EB. Tandem anaerobic-aerobic degradation of ranitidine, diclofenac, and simvastatin in domestic sewage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 721:137589. [PMID: 32171136 DOI: 10.1016/j.scitotenv.2020.137589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 06/10/2023]
Abstract
There is a consensus among scientists that domestic sewage treatment plants are the main sources of drugs entry into the aquatic environment. Therefore, this work studies the biodegradation of the drugs ranitidine (RNT), diclofenac (DCF), and simvastatin (SVT) (50 μg L-1, each), in real domestic sewage, using a continuous anaerobic-aerobic reactor with immobilized biomass and an anaerobic batch reactor. The continuous anaerobic-aerobic reactor was operated for 6 months with hydraulic retention time (HRT) of 8 h. The initial degradation rates and the maximum oxidation capacities (MOC) of the system were estimated, achieving 90, 72, and 62% removals and 100, 93, and 72% of MOC for RNT, DCF and SVT, respectively, as well as 71% removal of soluble chemical oxygen demand (COD). RNT was degraded throughout the reactor, while DCF was degraded mainly in the two anaerobic chambers and SVT in the first anaerobic chamber. Anaerobic batches were used for the identification of biodegradation by-products (2,6-dichloro-N-(2-methylphenyl) aniline and simvastatin acid), the evaluation of the specific methanogenic activity (SMA) inhibition, and the estimation of acute and chronic ecotoxicities using the ECOSAR 1.11 software. The present study showed that, even at environmental concentrations, RNT, DCF, and SVT were capable of inhibiting the SMA. Lipophilicities dictated the behavior of those three drugs. The greater their lipophilicities, the greater the SMA inhibition and their ecotoxicity.
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Affiliation(s)
- Thiago H G da Silva
- São Carlos, Institute of Chemistry, University of São Paulo, C.P.780, São Carlos, SP CEP 13560-970, Brazil.
| | - Rafaely X de S Furtado
- São Carlos, Institute of Chemistry, University of São Paulo, C.P.780, São Carlos, SP CEP 13560-970, Brazil.
| | - Marcelo Zaiat
- São Carlos School of Engineering, University of São Paulo, C.P.780, São Carlos, SP CEP 13560-970, Brazil.
| | - Eduardo B Azevedo
- São Carlos, Institute of Chemistry, University of São Paulo, C.P.780, São Carlos, SP CEP 13560-970, Brazil.
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Lamarca RS, Faria RADD, Zanoni MVB, Nalin M, Lima Gomes PCFD, Messaddeq Y. Simple, fast and environmentally friendly method to determine ciprofloxacin in wastewater samples based on an impedimetric immunosensor. RSC Adv 2020; 10:1838-1847. [PMID: 35494561 PMCID: PMC9047983 DOI: 10.1039/c9ra09083e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/18/2019] [Indexed: 12/17/2022] Open
Abstract
In this study an impedimetric immunosensor was developed in order to determine ciprofloxacin (CIP) in wastewater samples, an emergent contaminant widely found in wastewater. To achieve this, an anti-ciprofloxacin antibody was immobilized on the surface of a printed carbon electrode. Then, the developed immunosensor was applied in wastewater samples from Université Laval residences (Québec, Canada) through the load transfer resistance (Rct) using [Fe(CN)6]3−/4− as a redox probe, and the average CIP concentration was found to be 2.90 × 10−4 μg mL−1. The observed Rct changes presented a linear relationship from CIP concentrations of 10−5 to 1.0 μg mL−1, with detection and quantification limits of 2.50 × 10−6 and 7.90 × 10−6 μg mL−1, respectively. The immunosensor presented high selectivity and repeatability, as well as a good recovery rate in wastewater samples (97%). Significant interference with other compounds was not observed. The proposed method requires only 30 μL of sample without the use of organic solvents or preceding sample preparation and/or extraction techniques. Moreover, the method is fast: only 20 min of incubation followed by 2 min of analysis time was sufficient to obtain the CIP concentration. The method's estimated cost is U$ 2.00 per sample. In this study an impedimetric immunosensor was developed in order to determine ciprofloxacin (CIP) in wastewater samples, an emergent contaminant widely found in wastewater samples.![]()
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Affiliation(s)
| | | | - Maria Valnice Boldrin Zanoni
- UNESP
- National Institute for Alternative Technologies of Detection
- Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)
- Institute of Chemistry
- São Paulo State University – UNESP
| | - Marcelo Nalin
- Institute of Chemistry
- São Paulo State University (UNESP)
- Araraquara
- Brazil
| | - Paulo Clairmont Feitosa de Lima Gomes
- UNESP
- National Institute for Alternative Technologies of Detection
- Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)
- Institute of Chemistry
- São Paulo State University – UNESP
| | - Younès Messaddeq
- Center for Optics, Photonics and Laser (COPL)
- Université Laval
- Quebec
- Canada
- Institute of Chemistry
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9
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Mao N, Huang L, Shuai Q. Facile Synthesis of Porous Carbon for the Removal of Diclofenac Sodium from Water. ACS OMEGA 2019; 4:15051-15060. [PMID: 31552347 PMCID: PMC6751710 DOI: 10.1021/acsomega.9b01838] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/21/2019] [Indexed: 05/02/2023]
Abstract
In this work, a series of porous carbon materials (PCs) were obtained at different carbonization temperatures (800, 900, 1000, and 1100 °C) by a simple and fast solvent-free method. Moreover, the feasibility of PCs as reliable and efficient adsorbents to capture diclofenac sodium (DCF) from the water was evaluated. Notably, porous carbon (PC) prepared at 1000 °C (PC-1000) was found to be the best candidate for the adsorption of DCF. Remarkably, adsorption equilibrium was achieved within 3 h, which followed a pseudo-second-order kinetic model with a high correlation coefficient (R 2 > 0.994). Furthermore, experimental data obtained from adsorption isotherm indicated that the capture of DCF onto PC-1000 followed the Langmuir adsorption model (R 2 > 0.997), wherein its maximum adsorption capacity was calculated to be 392 mg/g. In addition, based on the results obtained from the zeta potential of PC-1000 under different pH and the adsorbed quantity of DCF along with functional groups created on the surface of PC-1000, electrostatic and H-bonding interactions were proposed as the possible adsorption mechanisms. Due to its high stability and excellent reusability, PC-1000 has been testified as a promising candidate for removing DCF from contaminated water.
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Carneiro RB, Sabatini CA, Santos-Neto ÁJ, Zaiat M. Feasibility of anaerobic packed and structured-bed reactors for sulfamethoxazole and ciprofloxacin removal from domestic sewage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:419-429. [PMID: 31077920 DOI: 10.1016/j.scitotenv.2019.04.437] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 05/24/2023]
Abstract
This study assessed the applicability of fixed bed bioreactors in two configurations - anaerobic structured bed reactor (ASBR) and anaerobic packed bed reactor (APBR) - in the removal of Sulfamethoxazole (SMX) and Ciprofloxacin (CIP), two antibiotics frequently detected in sanitary sewage. The problem of these pharmaceuticals as emerging contaminants in conventional sewage treatment systems is mainly because they encourage the development and spread of resistance genes in bacteria. Both reactors had similar performances, and the antibiotics were highly removed - APBR: 85 ± 10% for SMX and 81 ± 16% for CIP; ASBR: 83 ± 12% for SMX and 81 ± 15% for CIP. The ASBR showed to be potentially more feasible in operating and economic terms compared to the APBR, as the former presents a smaller amount of support material in the bed. SMX was completely biotransformed, while the influence of the sorption mechanism was observed for CIP, as its presence was detected sorbed onto biomass throughout the reaction bed of the reactors, with a partition coefficient (log KD) of around 2.8 L·kg-1TSS. The degradation kinetics of the pharmaceuticals were fitted using a first-order kinetic model, whereby the reactors behaved as plug flow ones, indicating the possibility of optimizing the operation for a hydraulic retention time of 6 h. The removal kinetics was more favorable for CIP (higher apparent constant kinetic - kCIPapp > kSMXapp), since its biodegradation is linked to the biomass, which is more concentrated in the bed bottom layer. The experimental results showed the potential of anaerobic fixed bed reactors in removing environmentally relevant concentrations of SMX and CIP found in sewage.
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Affiliation(s)
- Rodrigo B Carneiro
- Laboratory of Biological Processes, Sao Carlos School of Engineering, University of Sao Paulo (USP), 1100, João Dagnone Ave., Santa Angelina, 13563-120, São Carlos, São Paulo, Brazil.
| | - Carolina A Sabatini
- Laboratory of Biological Processes, Sao Carlos School of Engineering, University of Sao Paulo (USP), 1100, João Dagnone Ave., Santa Angelina, 13563-120, São Carlos, São Paulo, Brazil
| | - Álvaro J Santos-Neto
- Laboratory of Chromatography, Institute of Chemistry of Sao Carlos, University of Sao Paulo (USP), 400, Trabalhador São-Carlense Ave., 13566-590, São Carlos, São Paulo, Brazil.
| | - Marcelo Zaiat
- Laboratory of Biological Processes, Sao Carlos School of Engineering, University of Sao Paulo (USP), 1100, João Dagnone Ave., Santa Angelina, 13563-120, São Carlos, São Paulo, Brazil.
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