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Du H, Chen P, Lin X, Zheng J, Liu H, Wang X. Adsorption of metals on aged microplastics in intensive mariculture areas: Aggravating the potential ecological risks to marine organisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:173964. [PMID: 38876355 DOI: 10.1016/j.scitotenv.2024.173964] [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: 02/01/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024]
Abstract
Field determination of the metal adsorption capacity of microplastics (MPs) by using a passive sampler had been done in typical subtropical mariculture area in China. The adsorption of eight metals (Fe, Mn, Cu, Zn, As, Pb, Cr and Cd) by five types of MPs (low-density polyethylene, polypropylene, polystyrene, poly(ethylene terephthalate) and poly(vinyl chloride) (PVC) was compared, including metal types, mariculture types (cage and longline culture), metal residue content in ambient environment, polymer types and particle sizes of MPs. The results showed that Cu, Zn, As, Cd, Pb and Cr in the mariculture environment were contaminated compared with the quality criteria. The concentrations of these six metals adsorbed on five MPs increased linearly with those in seawater. More enriched Cu and As in MPs in marine cage culture than in longline culture, due to the obvious endogenous pollution emissions for the artificial diets, fish medicine and disinfectants. Aged PVC with more cracks and pores showed higher metal adsorption capacity than any other polymers. MPs with a smaller size range of 50-74 μm tended to accumulate higher amounts of metals than those with a larger size range of 74-178 μm, consisting with the surface characteristics of MPs. The significant positive relationship between the concentrations of nutrients in seawater and the adsorption amounts of Cu, Zn and As on MPs implies that the eutrophication would promote their pollution. Based on the ecological risk assessment, the occurrence of MPs could aggravate the potential risk of metals to marine organisms in intensive mariculture areas. This is the first time to reveal the impacts of the adsorption of metals on aged MPs on the potential ecological risks of metals to organisms under the realistic environmental condition.
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Affiliation(s)
- Huihong Du
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Pengyu Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Jiangsu Province Engineering Research Center for Marine Bio-resources Sustainable Utilization, College of Oceanography, Hohai University, Nanjing 210024, China
| | - Xiaoping Lin
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Jingyi Zheng
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Huatai Liu
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.
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2
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Liu Q, Wu D, Pan Y, Shen Y, Wang X, Xiong F, Han J, Zhang Z, Chen Y, Chen Z, Yuan S, Yu H, Yao W. Interaction behavior, mechanisms and hazardous changes of microplastics on single and binary component pesticide in the environment and food: Diethofencarb and pyrimethanil. JOURNAL OF HAZARDOUS MATERIALS 2024; 475:134809. [PMID: 38870852 DOI: 10.1016/j.jhazmat.2024.134809] [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: 04/12/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/15/2024]
Abstract
In order to investigate the adsorption behavior and mechanism of microplastics (MPs) on multiple coexisting pesticides in practical systems, as well as their hazardous changes upon binding, diethofencarb and pyrimethanil were selected to be studied with four MPs. The adsorption rate of both pesticides would be faster in the binary-component case, conforming to pseudo-second-order kinetics, with adsorption sites and chemical adsorption dominating. And the more hydrophobic the pesticide, the faster the adsorption rate and the higher the adsorption capacity. Diethofencarb belonged to monolayer adsorption, whereas pyrimethanil belonged to monomolecular combined with multilayer adsorption, depending on the size of pesticides. And the adsorption process was both competitive and synergistic when pesticides coexist. In addition, the adsorption process was a spontaneous heat absorption process. Electrostatic forces have little effect on adsorption, while the adsorption capacity can be altered by the adsorption sites and hydrophobicity of MPs. The salting-out effect also facilitated the adsorption process. As for changes in hazard, the bioluminescence of A. fischeri wasn't significantly inhibited, lacking of acute environmental toxicity. However, in vitro digestion experiments demonstrated a significant increase in bioavailability of diethofencarb and pyrimethanil in combination with MPs. These findings suggest the stronger adsorption behaviors and higher loading capacities between pesticides and MPs could lead more serious hazards to the human body, which deserves further attention.
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Affiliation(s)
- Qingrun Liu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Dajun Wu
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Yue Pan
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Yao Shen
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Xiao Wang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Fukang Xiong
- School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Jinchi Han
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Zixuan Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Yulun Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Zhe Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Shaofeng Yuan
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Hang Yu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China.
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Kalaronis D, Evgenidou E, Kyzas GZ, Bikiaris DN, Lambropoulou DA. Assessing the adsorption of a diverse range of pharmaceuticals to virgin and aged poly (ethylene terephthalate) microplastics in different environmental matrices. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34551-9. [PMID: 39102135 DOI: 10.1007/s11356-024-34551-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 07/24/2024] [Indexed: 08/06/2024]
Abstract
In this study, the adsorption of a mixture of high-consumed drugs onto virgin and aged PET microplastics has been studied for the time ever. The target mixture comprised two anti-inflammatory drugs, diclofenac and ketoprofen, one anti-hypertensive, valsartan, and four common antibiotics, indomethacin, trimethoprim, isoniazid, and metronidazole. Two types of PET MPs (virgin and UV-aged) were used in the experimental procedure. Kinetic studies were conducted, and adsorption isotherms were obtained revealing the possible interactions that take place between adsorbents and adsorbates. Among the studied pharmaceuticals, diclofenac presents the highest uptake due to its hydrophobic nature, while aging appears to induce the adsorption of the drugs in MPs. Factors like pH or the environmental matrix were also evaluated. The results revealed that sorption is pH-dependent, while more complicated matrices like wastewater or seawater exhibit lower uptake than distilled water due to the natural organic matter present or the increased salinity, respectively. Finally, desorption studies were also conducted in three different aqueous solutions examining the pH effect. The desorption of the compounds was higher for diclofenac, followed by valsartan, and ketoprofen. The desorption percentages of antibiotics were quite low.
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Affiliation(s)
- Dimitrios Kalaronis
- Laboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Eleni Evgenidou
- Laboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
- Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, 57001, Thessaloniki, Greece
| | - George Z Kyzas
- Hephaestus Laboratory, School of Chemistry, Faculty of Sciences, Democritus University of Thrace, 654 04, Kavala, Greece
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Dimitra A Lambropoulou
- Laboratory of Environmental Pollution Control, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece.
- Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, 57001, Thessaloniki, Greece.
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Titov I, Semerád J, Boháčková J, Beneš H, Cajthaml T. Microplastics meet micropollutants in a Central European river stream: adsorption of pollutants to microplastics under environmentally relevant conditions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024:124616. [PMID: 39067740 DOI: 10.1016/j.envpol.2024.124616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/21/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Microplastics have emerged as pervasive pollutants in aquatic environments, and their interaction with organic contaminants poses a significant environmental challenge. This study aimed to explore the adsorption of micropollutants onto microplastics in a river, examining different plastic materials and the effect of aging on adsorption capacity. Microplastics (low-density polyethylene (LDPE), polyethylene terephthalate (PET), and polyvinyl chloride (PVC)) were introduced into a river stream, and a comprehensive analysis involving 297 organic pollutants was conducted. Passive samplers were deployed to monitor micropollutant presence in the river. Sixty-four analytes were identified in the river flow, with telmisartan being the most prevalent. Nonaged PVC showed the highest telmisartan concentration at 279 ng/g (168 ng/m2 regarding the microplastic surface), while aged PVC exhibited a fourfold decrease. Conversely, aged LDPE preferentially adsorbed metoprolol and tramadol, with concentrations increasing 12- and 3-fold, respectively, compared to nonaged LDPE. Azithromycin and clarithromycin, positively charged compounds, exhibited higher sorption to PET microplastics, regardless of aging. Diclofenac showed higher concentrations on nonaged PVC compared to aged PVC. Aging induced structural changes in microplastics, including color alterations, smaller particle production, and increased specific surface area. These changes influenced micropollutant adsorption, with hydrophobicity, dissociation constants, and the ionic form of pollutants being key factors. Aged microplastics generally showed different sorption properties. A comparison of microplastics and control sand particles indicated preferential micropollutant sorption to microplastics, underscoring their role as vectors for contaminant transport in aquatic ecosystems. Analysis of river sediment emphasized the significance of contact time in pollutant accumulation. Overall, this study provides insights into the complex interactions between microplastics and organic pollutants under environmental conditions and contributes to a better understanding of the fate and behavior of these two types of contaminants in aquatic ecosystems.
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Affiliation(s)
- Ivan Titov
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic; Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Benátská 2, 128 01 Prague, Czech Republic
| | - Jaroslav Semerád
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Jana Boháčková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic; Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Benátská 2, 128 01 Prague, Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, Prague 6, Czech Republic
| | - Tomáš Cajthaml
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic; Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Benátská 2, 128 01 Prague, Czech Republic.
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Yan Y, Xu H, Wang Z, Chen H, Yang L, Sun Y, Zhao C, Wang D. Effect of surface functional groups of polystyrene micro/nano plastics on the release of NOM from flocs during the aging process. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134421. [PMID: 38718517 DOI: 10.1016/j.jhazmat.2024.134421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/30/2024]
Abstract
Currently, the hidden risk of microplastics in the coagulation process has attracted much attention. However, previous studies aimed at improving the removal efficiency of microplastics and ignored the importance of interactions between microplastics and natural organic matter (NOM). This study investigated how polystyrene micro/nano particles impact the release of NOM during the aging of flocs formed by aluminum-based coagulants Al13 and AlCl3. The results elucidated that nano-particles with small particle sizes and agglomerative states are more likely to interact with coagulants. After 7 years of floc aging, the DOC content of the nano system decreased by more than 40%, while the micron system did not change significantly. During coagulation, the benzene rings in polystyrene particles form complexes with electrophilic aluminum ions through π-bonding, creating new Al-O bonds. NOM tends to adsorb at micro/nano plastic interfaces due to hydrophobic interactions and conformational entropy. In the aging process, the structure of PS-Al13 or PS-AlCl3 flocs and the functional groups on the surface of micro/nano plastics control the absorption and release of organic matter through hydrophobic, van der Waals forces, hydration, and polymer bridging. In the system with the addition of nano plastics, several DBPs such as TCAA, DCAA, TBM, DBCM and nitrosamines were reduced by more than 50%. The reaction order of different morphological structures and surface functional groups of microplastics to Al13 and AlCl3 systems is aromatic C-H > C-OH > C-O > NH2 > aromatic CC > aliphatic C-H and C-O>H-CO> NH2 >C-OH> aliphatic C-H. The results provided a new sight to explore the effect of micro/nano plastics on the release of NOM during flocs aging.
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Affiliation(s)
- Yi Yan
- Chang' an University, Xi'an, Shaanxi 710061, China
| | - Hui Xu
- Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, Guangxi 530006, China.
| | - Zijie Wang
- China Railway Design Corporation, Tianji 300308, China
| | - Hongni Chen
- Chang' an University, Xi'an, Shaanxi 710061, China
| | - Liwei Yang
- Chang' an University, Xi'an, Shaanxi 710061, China
| | - Yan Sun
- Chang' an University, Xi'an, Shaanxi 710061, China
| | - Chuanliang Zhao
- Chang' an University, Xi'an, Shaanxi 710061, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Dongsheng Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China
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Ning Z, Zhou S, Yang Y, Li P, Zhao Z, Zhang W, Lu L, Ren N. Adsorption behaviors of perfluorooctanoic acid on aged microplastics. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e11080. [PMID: 38970489 DOI: 10.1002/wer.11080] [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: 07/11/2023] [Revised: 05/10/2024] [Accepted: 06/23/2024] [Indexed: 07/08/2024]
Abstract
The presence of perfluoroalkyl substances (PFAS) in the environment poses a significant threat to ecological safety and environmental health. Widespread microplastics (MPs) have been recognized as vectors for emerging contaminants due to human activities. However, the adsorption behaviors of PFAS on MPs, especially on aged MPs, have not been extensively investigated. This study aimed to investigate the adsorption behaviors of perfluorooctanoic acid (PFOA) on aged MPs (polystyrene, polyethylene, and polyethylene terephthalate) treated with UV irradiation and persulfate oxidation under salinity and dissolve organic matter (DOM) condition. Carbonyl index values of MPs increased after the aged treatment, indicating the production of oxygen-containing groups. The PFOA adsorption on aged MPs was impacted by the co-existence of Na+ ions and DOM. As PFOA adsorption onto aged MPs was mainly controlled by hydrophobic interaction, the electrostatic interaction also made a contribution, but there was no significant change in PFOA adsorption behavior between the pristine and aged MPs. While these findings provide insight into PFAS adsorption on aged MPs, further research is necessary to account for the complexity of the real environment. PRACTITIONER POINTS: Adsorption behaviors of perfluorooctanoic acid (PFOA) on aged microplastics were investigated. Hydrophobic interaction mainly controlled PFOA adsorption on aged microplastics (MPs). Co-existence dissolve organic matter and salinity influenced PFOA adsorption behaviors on aged MPs.
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Affiliation(s)
- Zigong Ning
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China
- Zhuhai Modern Agriculture Development Center, Zhuhai, China
| | - Shuang Zhou
- Shenzhen Honglue Research Institute of Innovation Management, Shenzhen, China
| | - Ying Yang
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China
| | - Pengxiang Li
- CCTEG Beijing Academy of Land Renovation and Ecological Restoration Technology Co. Ltd, Beijing, China
- Research Center of Land Renovation and Ecological Restoration Engineering in the Coal Industry, Beijing, China
| | - Zilong Zhao
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China
| | - Wei Zhang
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China
| | - Lu Lu
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China
| | - Nanqi Ren
- School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China
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Pinto EP, Scott J, Hess K, Paredes E, Bellas J, Gonzalez-Estrella J, Minghetti M. Role of UV radiation and oxidation on polyethylene micro- and nanoplastics: impacts on cadmium sorption, bioaccumulation, and toxicity in fish intestinal cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:47974-47990. [PMID: 39017862 PMCID: PMC11297841 DOI: 10.1007/s11356-024-34301-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: 01/08/2024] [Accepted: 07/03/2024] [Indexed: 07/18/2024]
Abstract
This study investigated the role of ultraviolet (UV) radiation and oxidation in high-density polyethylene microplastics (2-15 μm) and nanoplastics (0.2-9.9 μm) (NMPs) on particle chemistry, morphology, and reactivity with cadmium (Cd). Additionally, toxicity of NMPs alone and with Cd was evaluated using RTgutGC cells, a model of the rainbow trout (Oncorhynchus mykiss) intestine. The role on NMPs on Cd bioaccumulation in RTgutGC cells was also evaluated. Dynamic light scattering indicated that after UV radiation NPs agglomerated size increased from 0.8 to 28 µm, and to 8 µm when Cd was added. Oxidized MPs agglomerated size increased from 11 and 7 to 46 and 27 µm in non-UV- and UV-aged oxidized MPs when adding Cd, respectively. Cd-coated particles exhibited generally significantly higher zeta potential than non-Cd-coated particles, while attenuated total reflectance-Fourier transform infrared spectroscopy showed that the functional chemistry of the particles was oxidized and modified after being exposed to UV radiation. Presence of NMPs resulted in a significant decrease in Cd bioaccumulation in RTgutGC cells (100.5-87.9 ng Cd/mg protein) compared to Cd alone (138.1 ng Cd/mg protein), although this was not quite significant for co-exposures with UV-aged NPs (105.7 ng Cd/mg protein). No toxicity was observed in RTgutGC cells exposed to NMPs alone for 24 h. Moreover, co-exposures with Cd indicated that NMPs reduce the toxicity of Cd. Altogether these results show that UV aging enhances NMP surface reactivity, increasing Cd absorption in solution, which resulted in a reduction in Cd bioavailability and toxicity.
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Affiliation(s)
- Estefanía Pereira Pinto
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, 74078, USA.
- Centro de Investigación Mariña, Departamento de Ecoloxía e Bioloxía Animal, Laboratorio de Ecoloxía Costeira (ECOCOST), 36310, Universidade de Vigo, Vigo, Spain.
| | - Justin Scott
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Kendra Hess
- School of Civil and Environmental Engineering, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Estefanía Paredes
- Centro de Investigación Mariña, Departamento de Ecoloxía e Bioloxía Animal, Laboratorio de Ecoloxía Costeira (ECOCOST), 36310, Universidade de Vigo, Vigo, Spain
| | - Juan Bellas
- Centro Oceanográfico de Vigo, Instituto Español de Oceanografía (IEO, CSIC), Subida a Radio Faro 50, 36390, Vigo, Spain
| | - Jorge Gonzalez-Estrella
- School of Civil and Environmental Engineering, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Matteo Minghetti
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, 74078, USA
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Zhang Y, Xu X, Xu J, Li Z, Cheng L, Fu J, Sun W, Dang C. When antibiotics encounter microplastics in aquatic environments: Interaction, combined toxicity, and risk assessments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172455. [PMID: 38636871 DOI: 10.1016/j.scitotenv.2024.172455] [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: 01/02/2024] [Revised: 03/27/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
Antibiotics and microplastics (MPs), known as emerging pollutants, are bound to coexist in aquatic environments due to their widespread distribution and prolonged persistence. To date, few systematic summaries are available for the interaction between MPs and antibiotics in aquatic ecosystems, and a comprehensive reanalysis of their combined toxicity is also needed. Based on the collected published data, we have analyzed the source and distribution of MPs and antibiotics in global aquatic environments, finding their coexistence occurs in a lot of study sites. Accordingly, the presence of MPs can directly alter the environmental behavior of antibiotics. The main influencing factors of interaction between antibiotics and MPs have been summarized in terms of the characteristics of MPs and antibiotics, as well as the environmental factors. Then, we have conducted a meta-analysis to evaluate the combined toxicity of antibiotics and MPs on aquatic organisms and the related toxicity indicators, suggesting a significant adverse effect on algae, and inapparent on fish and daphnia. Finally, the environmental risk assessments for antibiotics and MPs were discussed, but unfortunately the standardized methodology for the risk assessment of MPs is still challenging, let alone assessment for their combined toxicity. This review provides insights into the interactions and environment risks of antibiotics and MPs in the aquatic environment, and suggests perspectives for future research.
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Affiliation(s)
- Yibo Zhang
- Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China
| | - Xin Xu
- Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China
| | - Jing Xu
- Dezhou Eco-environment Monitoring Center of Shandong Province, Dezhou, 253000, China
| | - Zhang Li
- Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China
| | - Long Cheng
- Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China
| | - Jie Fu
- Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China
| | - Weiling Sun
- State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Chenyuan Dang
- Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, China.
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9
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Poursat BAJ, Langenhoff AAM, Feng J, Goense J, Peters RJB, Sutton NB. Effect of ultra-high-density polyethylene microplastic on the sorption and biodegradation of organic micropollutants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 279:116510. [PMID: 38810284 DOI: 10.1016/j.ecoenv.2024.116510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/29/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024]
Abstract
Microplastics and organic micropollutants are two emerging contaminants that interact with each other in environmental and engineered systems. Sorption of organic micropollutants, such as pharmaceuticals, pesticides and industrial compounds, to microplastics can modify their bioavailability and biodegradation. The present study investigated the capacity of ultra-high density polyethylene particles (125 µm in diameter), before and after aging, to sorb 21 organic micropollutants at different environmentally relevant concentration. Furthermore, the biodegradation of these organic micropollutants by a biofilm microbial community growing on the microplastic surface was compared with the biodegradation by a microbial community originating from activated sludge. Among all tested organic micropollutants, propranolol (70%), trimethoprim (25%) and sotalol (15%) were sorbed in the presence of polyethylene particles. Growth of a biofilm on the polyethylene particles had a beneficial effect on the sorption of bromoxynil, caffeine and chloridazon and on the biodegradation of irbesartan, atenolol and benzotriazole. On the other hand, the biofilm limited the sorption of trimethoprim, propranolol, sotalol and benzotriazole and the biodegradation of 2,4-D. These results showed that ultra-high density polyethylene particles can affect both in a positive and negative way for the abiotic and biotic removal of organic micropollutants in wastewater. This project highlights the need for further investigation regarding the interaction between microplastics and organic micropollutants in the aquatic environment.
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Affiliation(s)
- Baptiste A J Poursat
- Environmental Technology, Wageningen University & Research, P.O. Box 17, Wageningen 6700 AA, the Netherlands.
| | - Alette A M Langenhoff
- Environmental Technology, Wageningen University & Research, P.O. Box 17, Wageningen 6700 AA, the Netherlands
| | - Jiahao Feng
- Environmental Technology, Wageningen University & Research, P.O. Box 17, Wageningen 6700 AA, the Netherlands
| | - Julianne Goense
- Environmental Technology, Wageningen University & Research, P.O. Box 17, Wageningen 6700 AA, the Netherlands
| | - Ruud J B Peters
- Wageningen Food Safety Research, Wageningen University & Research, Akkermaalsbos 2, Wageningen 6708 WB, the Netherlands
| | - Nora B Sutton
- Environmental Technology, Wageningen University & Research, P.O. Box 17, Wageningen 6700 AA, the Netherlands
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10
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Bao X, Gu Y, Chen L, Wang Z, Pan H, Huang S, Meng Z, Chen X. Microplastics derived from plastic mulch films and their carrier function effect on the environmental risk of pesticides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171472. [PMID: 38458459 DOI: 10.1016/j.scitotenv.2024.171472] [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: 12/07/2023] [Revised: 03/01/2024] [Accepted: 03/02/2024] [Indexed: 03/10/2024]
Abstract
Plastic film mulching can maintain soil water and heat conditions, promote plant growth and thus generate considerable economic benefits in agriculture. However, as they age, these plastics degrade and form microplastics (MPs). Additionally, pesticides are widely utilized to control organisms that harm plants, and they can ultimately enter and remain in the environment after use. Pesticides can also be sorbed by MPs, and the sorption kinetics and isotherms explain the three stages of pesticide sorption: rapid sorption, slow sorption and sorption equilibrium. In this process, hydrophobic and partition interactions, electrostatic interactions and valence bond interactions are the main sorption mechanisms. Additionally, small MPs, biodegradable MPs and aged conventional MPs often exhibit stronger pesticide sorption capacity. As environmental conditions change, especially in simulated biological media, pesticides can desorb from MPs. The utilization of pesticides by environmental microorganisms is the main factor controlling the degradation rate of pesticides in the presence of MPs. Pesticide sorption by MPs and size effects of MPs on pesticides are related to the internal exposure level of biological pesticides and changes in pesticide toxicity in the presence of MPs. Most studies have suggested that MPs exacerbate the toxicological effects of pesticides on sentinel species. Hence, the environmental risks of pesticides are altered by MPs and the carrier function of MPs. Based on this, research on the affinity between MPs and various pesticides should be systematically conducted. During agricultural production, pesticides should be cautiously selected and used plastic film to ensure human health and ecological security.
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Affiliation(s)
- Xin Bao
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yuntong Gu
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Long Chen
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zijian Wang
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Hui Pan
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Shiran Huang
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States
| | - Zhiyuan Meng
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Xiaojun Chen
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China.
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11
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Chandra S, Walsh KB. Microplastics in water: Occurrence, fate and removal. JOURNAL OF CONTAMINANT HYDROLOGY 2024; 264:104360. [PMID: 38729026 DOI: 10.1016/j.jconhyd.2024.104360] [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: 12/10/2023] [Revised: 04/22/2024] [Accepted: 05/02/2024] [Indexed: 05/12/2024]
Abstract
A global study on tap water samples has found that up to 83% of these contained microplastic fibres. These findings raise concerns about their potential health risks. Ingested microplastic particles have already been associated with harmful effects in animals, which raise concerns about similar outcomes in humans. Microplastics are ubiquitous in the environment, commonly found disposed in landfills and waste sites. Within indoor environments, the common sources are synthetic textiles, plastic bottles, and packaging. From the various point sources, they are globally distributed through air and water and can enter humans through various pathways. The finding of microplastics in fresh snow in the Antarctic highlights just how widely they are dispersed. The behaviour and health risks from microplastic particles are strongly influenced by their physicochemical properties, which is why their surfaces are important. Surface interactions are also important in pollutant transport via adsorption onto the microplastic particles. Our review covers the latest findings in microplastics research including the latest statistics in their abundance, their occurrence and fate in the environment, the methods of reducing microplastics exposure and their removal. We conclude by proposing future research directions into more effective remediation methods including new technologies and sustainable green remediation methods that need to be explored to achieve success in microplastics removal from waters at large scale.
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Affiliation(s)
- Shaneel Chandra
- College of Science and Sustainability, School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton North, QLD 4702, Australia; Coastal Marine Ecosystems Research Centre, Central Queensland University, Gladstone Marina Campus, Bryan Jordan Drive, Gladstone, QLD 4680, Australia.
| | - Kerry B Walsh
- College of Science and Sustainability, School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton North, QLD 4702, Australia
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12
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Bao X, Wang Z, Liu L, Wang D, Gu Y, Chen L, Chen X, Meng Z. The combined effects of azoxystrobin and different aged polyethylene microplastics on earthworms (Eisenia fetida): A systematic evaluation based on oxidative damage and intestinal function. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 923:171494. [PMID: 38453077 DOI: 10.1016/j.scitotenv.2024.171494] [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: 01/01/2024] [Revised: 03/02/2024] [Accepted: 03/03/2024] [Indexed: 03/09/2024]
Abstract
Pesticides and microplastics are common pollutants in soil environments, adversely affecting soil organisms. However, the combined toxicological effects of aged microplastics and pesticides on soil organisms are still unclear. In this study, we systematically studied the toxicological effects of azoxystrobin and four different aged polyethylene (PE) microplastics on earthworms (Eisenia fetida). The purpose was to evaluate the effects of aging microplastics on the toxicity of microplastics-pesticides combinations on earthworms. The results showed that different-aged PE microplastics promoted azoxystrobin accumulation in earthworms. Meanwhile, combined exposure to azoxystrobin and aged PE microplastics decreased the body weight of earthworms. Besides, both single and combined exposure to azoxystrobin and aged PE microplastics could lead to oxidative damage in earthworms. Further studies revealed that azoxystrobin and aged PE microplastics damage the intestinal structure and function of earthworms. Additionally, the combination of different aged PE microplastics and azoxystrobin was more toxic on earthworms than single exposures. The PE microplastics subjected to mechanical wear, ultraviolet radiation, and acid aging exhibited the strongest toxicity enhancement effects on earthworms. This high toxicity may be related to the modification of PE microplastics caused by aging. In summary, these results demonstrated the enhancing effects of aged PE microplastics on the toxicity of pesticides to earthworms. More importantly, aged PE microplastics exhibited stronger toxicity-enhancing effects in the early exposure stages. This study provides important data supporting the impact of different aged PE microplastics on the environmental risks of pesticides.
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Affiliation(s)
- Xin Bao
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zijian Wang
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Li Liu
- School of Tourism and Cuisine, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Dengwei Wang
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yuntong Gu
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Long Chen
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Xiaojun Chen
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhiyuan Meng
- College of Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China; School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China.
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13
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Mghili B, Hasni S, Ben-Haddad M, Rangel-Buitrago N, Keznine M, Lamine I, Hamiche FZ, Haddaoui H, Abelouah MR, Demiathi M, Oubahaouali B, Jellal N, Touaf M, Ahannach Y, Hassou N, Cherradi S, Aksissou M. Plastic pollution on Moroccan beaches: Toward baselines for large-scale assessment. MARINE POLLUTION BULLETIN 2024; 201:116288. [PMID: 38531205 DOI: 10.1016/j.marpolbul.2024.116288] [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: 03/05/2024] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 03/28/2024]
Abstract
In Africa, Morocco is the 10th largest producer of plastic. The severity of this plastic has attracted increasing amounts of attention in the Moroccan Atlantic and Mediterranean in recent years. However, at the national level, there is limited knowledge of plastic pollution. To obtain an exhaustive and comprehensive evaluation of plastic pollution levels in Morocco, large-scale monitoring is needed on all the coasts of the country. In this context, this paper examined the composition, abundance, distribution, source and quality of beaches on two Moroccan coasts using four beach quality indices along 29 beaches. During two seasons, a total of 72,105 items were counted. The mean litter abundance was 0.31 items/m2, and the Mediterranean beaches were more dense than the Atlantic beaches. In particular, litter density was greater in spring (0.35 items/m2) than in summer (0.29 items/m2). The data indicate considerable differences in the density of marine debris according to the seasonality, beach typology and presence of rivers. Hazardous litter items were collected along both Moroccan coasts, constituting 8.41 % of the total collected items, with a mean of 0.026 items/m2. The use of environmental indices allowed us to classify Moroccan beaches as "moderate cleanliness", "moderate abundance" of plastics, "moderately safe" presence of hazardous litter and "mediocre" environmental status. The findings of the present study indicate that the sources of litter on both Moroccan coasts come mainly from recreational activities and dumping. The waste management practices recommended for Moroccan beaches include reducing sources, mitigating mitigation measures and changing littering behavior.
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Affiliation(s)
- Bilal Mghili
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco.
| | - Soufiane Hasni
- Biology Department, Faculty of Sciences and Technology of Tangier, Abdelmalek Essaadi University, Morocco
| | - Mohamed Ben-Haddad
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Nelson Rangel-Buitrago
- Programa de Física, Facultad de Ciencias Básicas, Universidad del Atlántico, Barranquilla, Atlántico, Colombia
| | - Mohamed Keznine
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Imane Lamine
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco; Higher Institute of Nursing Professions and Technical Health, Errachidia, Morocco
| | - Fatima Zahra Hamiche
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Hatim Haddaoui
- Scientific Institute, University Mohammed V, Rabat, Morocco
| | - Mohamed Rida Abelouah
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Manal Demiathi
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Brahim Oubahaouali
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Nadia Jellal
- Research Laboratory in Applied and Marine Geosciences, Geotechnics and Geohazards (LR3G), Faculty of Sciences, Abdelmalek Essaâdi University, 93000 Tetouan, Morocco
| | - Mounia Touaf
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Youssef Ahannach
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Najwa Hassou
- Higher Institute of Nursing Professions and Technical Health, Rabat, Morocco
| | - Sohayb Cherradi
- Polydisciplinary Faculty in Larache, University Abdelmalek Essadi, Morocco
| | - Mustapha Aksissou
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
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14
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Palucha N, Fojt J, Holátko J, Hammerschmiedt T, Kintl A, Brtnický M, Řezáčová V, De Winterb K, Uitterhaegen E, Kučerík J. Does poly-3-hydroxybutyrate biodegradation affect the quality of soil organic matter? CHEMOSPHERE 2024; 352:141300. [PMID: 38286312 DOI: 10.1016/j.chemosphere.2024.141300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 01/31/2024]
Abstract
The search for eco-friendly substitutes for traditional plastics has led to the production of biodegradable bioplastics. However, concerns have been raised about the impact of bioplastic biodegradation on soil health. Despite these concerns, the potential negative consequences of bioplastics during various stages of biodegradation remain underexplored. Therefore, this study aims to investigate the impact of micro-bioplastics made of poly-3-hydroxybutyrate (P3HB) on the properties of three different soils. In our ten-month experiment, we investigated the impact of poly-3-hydroxybutyrate (P3HB) on Chernozem, Cambisol, and Phaeozem soils. Our study focused on changes in soil organic matter (SOM), microbial activity, and the level of soil carbon and nitrogen. The observed changes indicated an excessive level of biodegradation of SOM after the soils were enriched with micro-particles of P3HB, with concentrations ranging from 0.1% to 3%. The thermogravimetric analysis confirmed the presence of residual P3HB (particularly in the 3% treatment) and underscored the heightened biodegradation of SOM, especially in the more stable SOM fractions. This was notably evident in Phaeozem soils, where even the stable SOM pool was affected. Elemental analysis revealed changes in soil organic carbon content following P3HB degradation, although nitrogen levels remained constant. Enzymatic activity was found to vary with soil type and responded differently across P3HB concentration levels. Our findings confirmed that P3HB acts as a bioavailable carbon source. Its biodegradation stimulates the production of enzymes, which in turn affects various soil elements, indicating complex interactions within the soil ecosystem.
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Affiliation(s)
- Natálie Palucha
- Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic; Bio Base Europe Pilot Plant VZW, Rodenhuizekaai 1, Desteldonk, Gent, 9042, Belgium
| | - Jakub Fojt
- Textile Testing Institute, Cejl 480/12, 602 00, Brno, Czech Republic
| | - Jiri Holátko
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic; Agrovyzkum Rapotin, Ltd, Výzkumniků 267, 788 13, Rapotin, Czech Republic
| | - Tereza Hammerschmiedt
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic
| | - Antonin Kintl
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic; Agricultural Research, Ltd, Zahradní 400/1, 664 41, Troubsko, Czech Republic
| | - Martin Brtnický
- Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, Brno, 61300, Czech Republic
| | - Veronika Řezáčová
- Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic
| | - Karel De Winterb
- Bio Base Europe Pilot Plant VZW, Rodenhuizekaai 1, Desteldonk, Gent, 9042, Belgium
| | - Evelien Uitterhaegen
- Bio Base Europe Pilot Plant VZW, Rodenhuizekaai 1, Desteldonk, Gent, 9042, Belgium
| | - Jiří Kučerík
- Brno University of Technology, Institute of Chemistry and Technology of Environmental Protection, Purkyňova 118, Brno, 612 00, Czech Republic.
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15
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Yang S, Zhang Y, Chen Y, Zeng Y, Yan X, Tang X, Pu S. Studies on the transfer effect of aged polyethylene microplastics in soil-plant system. CHEMOSPHERE 2024; 349:141001. [PMID: 38128740 DOI: 10.1016/j.chemosphere.2023.141001] [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: 10/18/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023]
Abstract
The widespread use of polyethylene (PE) agricultural films has led to a large accumulation of microplastics in soil, and the environmental effects of microplastics on soil-plants have received increasing attention. In the actual soil environment, microplastics undergo significant changes in their physicochemical properties due to aging, accompanied by complex ecological and environmental effects. However, the quantitative understanding of the environmental effects of microplastic aging in soil-plant systems is still unclear. Therefore, this study investigated the effects of aged and unaged PE microplastics on ecological functions and microplastic transfer mechanisms in soil-plant system, and confirmed the transport behavior of micrometer-sized microplastics (26 μm) within maize plants, expanding the upper size limit of existing studies on microplastic transport within plants. The accumulation of microplastics in maize was also quantitatively assessed in combination with the self-established method of Eu marked PE. The mobility ratio of microplastics from soil to roots, roots to stems, and stems to leaves was 1.07%, 0.76%, and 103.28%, respectively. This study provides a scientific understanding for the environmental effects of microplastics in soil-plants systems quantitatively.
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Affiliation(s)
- Shuo Yang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China
| | - Ying Zhang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China
| | - Yi Chen
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China
| | - Yuping Zeng
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China
| | - Xinyao Yan
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China
| | - Xiao Tang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China
| | - Shengyan Pu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu, 610059, Sichuan, PR China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China.
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16
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Zhang Z, Zou S, Li P. Aging of plastics in aquatic environments: Pathways, environmental behavior, ecological impacts, analyses and quantifications. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122926. [PMID: 37963513 DOI: 10.1016/j.envpol.2023.122926] [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: 09/21/2023] [Revised: 10/30/2023] [Accepted: 11/10/2023] [Indexed: 11/16/2023]
Abstract
The ubiquity of plastics in our environment has brought about pressing concerns, with their aging processes, photo-oxidation, mechanical abrasion, and biodegradation, being at the forefront. Microplastics (MPs), whether originating from plastic degradation or direct anthropogenic sources, further complicate this landscape. This review delves into the intricate aging dynamics of plastics in aquatic environments under various influential factors. We discuss the physicochemical changes that occur in aged plastics and the release of oxidation products during their degradation. Particular attention is given to their evolving environmental interactions and the resulting ecotoxicological implications. A rigorous evaluation is also conducted for methodologies in the analysis and quantification of plastics aging, identifying their merits and limitations and suggesting potential avenues for future research. This comprehensive review is able to illuminate the complexities of plastics aging, charting a path for future research and aiding in the formulation of informed policy decisions.
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Affiliation(s)
- Zekun Zhang
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
| | - Shichun Zou
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China
| | - Pu Li
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China.
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17
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Liu Q, Wu D, Chen Y, Chen Z, Yuan S, Yu H, Guo Y, Xie Y, Qian H, Yao W. Interaction and mechanistic studies of thiram and common microplastics in food and associated changes in hazard. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132464. [PMID: 37716269 DOI: 10.1016/j.jhazmat.2023.132464] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/18/2023]
Abstract
Microplastics (MPs), an emerging pollutant in the environment and food, may adsorb other contaminants such as pesticide due to particles' properties. The adsorption behavior and their hazardous changes of four common types of MPs to thiram was investigated. The adsorption kinetics and isotherm models were fitted well using the pseudo-second-order model and the Langmuir model respectively, indicating forces such as van der Waals forces dominate, and the maximum adsorption capacity at pH values of 6-7 also indicates that electrostatic forces play a smaller role. The adsorption thermodynamic studies showed that the adsorption was a spontaneous and exothermic process. The decrease in the adsorption capacity as the concentration of MPs increases and more adsorption by aged MPs demonstrate that the adsorption process is related to the sites on the surface of MPs. Due to the influence of ionic strength, the adsorption capacity of MPs for thiram increases significantly when the adsorption process takes place in solutions with salinity or in orange and apple juices. The bioavailability of thiram adsorbed by PVC and PET increased significantly. This study highlights the strong role of MPs in food as carriers of pesticide residues in food systems and that the combined hazard should also be of concern.
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Affiliation(s)
- Qingrun Liu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Dajun Wu
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Yulun Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Zhe Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Shaofeng Yuan
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Hang Yu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Yahui Guo
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Yunfei Xie
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - He Qian
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China.
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18
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Nguyen MK, Lin C, Nguyen HL, Le VG, Haddout S, Um MJ, Chang SW, Nguyen DD. Ecotoxicity of micro- and nanoplastics on aquatic algae: Facts, challenges, and future opportunities. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 346:118982. [PMID: 37741192 DOI: 10.1016/j.jenvman.2023.118982] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/22/2023] [Accepted: 09/09/2023] [Indexed: 09/25/2023]
Abstract
The production of plastic has exponentially increased in recent years, leading to the release of millions of tons of plastic waste into the environment annually. This waste can break down into smaller micro- and nanoplastics (MNPs) that are toxic and reactive to life forms, including humans. MNPs are particularly concerning for marine biologists and environmental scientists due to their toxic impacts on aquatic organisms, including algae, which are the foundation of the food chain. The review provides a comprehensive overview of the (eco)toxicity assessment of MNPs on aquatic algal communities, highlighting the novel insights gained into the ecotoxicity of various MNPs on algae and the associated health risks for aquatic ecosystems, food chains, and humans. This article also discusses current challenges and future research opportunities to address these challenges, making it a valuable contribution to the field of environmental science. Overall, this work is one of the first efforts to comprehensively assess the effects of MNPs on aquatic algae, emphasizing the significant risks that MNPs pose to essential ecosystems and human health.
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Affiliation(s)
- Minh-Ky Nguyen
- Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Faculty of Environment and Natural Resources, Nong Lam University, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Chitsan Lin
- Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Van-Giang Le
- Central Institute for Natural Resources and Environmental Studies, Vietnam National University, Hanoi, 111000, Viet Nam
| | - S Haddout
- Department of Physics, Ibn Tofail University, Morocco
| | - Myoung-Jin Um
- Department of Civil & Energy System Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Soon W Chang
- Department of Civil & Energy System Engineering, Kyonggi University, 442-760, Republic of Korea
| | - D Duc Nguyen
- Department of Civil & Energy System Engineering, Kyonggi University, 442-760, Republic of Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, HCM City 755414, Viet Nam.
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19
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Islam MS, Islam Z, Jamal AHMSIM, Momtaz N, Beauty SA. Removal efficiencies of microplastics of the three largest drinking water treatment plants in Bangladesh. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165155. [PMID: 37379932 DOI: 10.1016/j.scitotenv.2023.165155] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/15/2023] [Accepted: 06/25/2023] [Indexed: 06/30/2023]
Abstract
Drinking water treatment plants (DWTPs) are intended to provide safe water to the municipality, typically by treating surface waters from rivers, lakes, and streams. Regrettably, all of these water sources for DWTPs have been reported to be contaminated by microplastics (MPs). Hence, there is an urgent need to investigate the removal efficiencies of MPs from raw waters in the conventional DWTPs anticipating public health concerns. In this experiment, MPs in the raw and treated waters of the three major DWTPs of Bangladesh, having different water treatment processes, were evaluated. The concentrations of MPs in the inlet points of Saidabad Water Treatment Plant phase-1 and 2 (SWTP-1 and SWTP-2), which share a similar water source of the Shitalakshya River, were 25.7 ± 9.8 and 26.01 ± 9.8 items L-1. The third plant, Padma Water Treatment Plant (PWTP) utilizes water from the Padma River and had an initial MP concentration of 6.2 ± 1.6 items L-1. The studied DWTPs, with their existing treatment processes, were found to reduce the MP loads substantially. The final MP concentrations in treated waters of SWTP-1, SWTP-2, and PWTP were 0.3 ± 0.03, 0.4 ± 0.01, and 0.05 ± 0.02 items L-1 with the removal efficiencies of 98.8, 98.5, and 99.2 %, respectively. The considered size range of MP was 20 μm to <5000. Fragments and fibers were the two predominant MP shapes. In terms of polymer, the MPs were polypropylene (PP, 48 %), polyethylene (PE, 35 %), polyethylene terephthalate (PET, 11 %), and polystyrene (PS, 6 %). The field emission scanning electron microscopy-energy dispersive X-ray spectroscopy (FESEM-EDX) revealed the fractured and rough surfaces of the remaining MPs, which were also found to be contaminated with heavy metals, like lead (Pb), cadmium (Cd), chromium (Cr), arsenic (As), copper (Cu), and zinc (Zn). Hence, additional initiatives are required to remove the residual MPs from the treated waters to safeguard the city dwellers from potential hazards.
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Affiliation(s)
- Muhammad Saiful Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh.
| | - Zahidul Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - A H M Shofiul Islam Molla Jamal
- Institute of National Analytical Research & Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Nasima Momtaz
- Biological Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Sadia Afrin Beauty
- Saidabad Water Treatment Plant, Dhaka Water Supply & Sewerage Authority, Dhaka 1204, Bangladesh
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20
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Bai R, Fan R, Xie C, Liu Q, Liu Q, Yan C, Cui J, He W. Microplastics are overestimated due to poor quality control of reagents. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132068. [PMID: 37494798 DOI: 10.1016/j.jhazmat.2023.132068] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/28/2023]
Abstract
Microplastics are widely distributed in the environment and pose potential ecological risks, increasing to be one of the most important environmental pollutants. However, when assessing the characteristics of microplastic contamination in environmental samples, inadequate quality control measures for the working solutions may introduce additional microplastic contamination and lead to an overestimation of microplastic abundance in the samples. In this study, we evaluated the microplastic contamination characteristics in commonly used flotation and digestion reagents to assess errors caused by microplastics in the reagents. The results showed that the abundance of microplastics in the reagents ranged from 0.8 to 43.4 items/g, with the abundance of microplastics in flotation reagents being lower than that in digestion reagents. The shapes of the detected microplastics included particles, fibers, and fragments, and their size and outline were generally small, with most being below 100 µm. The most common types of polymers detected were polyethylene and polypropylene. In order to improve the universality and readability of the results, the detected microplastic abundances were converted into the actual application concentration of the working fluid. It was found that the potential contamination of microplastics in untreated flotation solutions ranged from 1.5 to 30.8 items/mL, while in digestion solutions ranged from 0.1 to 2.3 items/mL. Our study emphasizes the need for quality control measures, such as suction filtration, when evaluating microplastics in environmental samples or conducting chemical and biological tests related to microplastics.
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Affiliation(s)
- Runhao Bai
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ruiqi Fan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changhong Xie
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Qin Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Qi Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changrong Yan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jixiao Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, Xinjiang, China.
| | - Wenqing He
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, Xinjiang, China.
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21
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He S, Sun S, Xue H, Kang C, Yu S. Polypropylene microplastics aging under natural conditions in winter and summer and its effects on the sorption and desorption of nonylphenol. ENVIRONMENTAL RESEARCH 2023; 225:115615. [PMID: 36871944 DOI: 10.1016/j.envres.2023.115615] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/27/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Plastics in the environment undergo various aging effects. Due to the changes in physical and chemical properties, the sorption behavior of aged microplastics (MPs) for pollutants differs from that of pristine MPs. In this paper, the most common disposable polypropylene (PP) rice box was used as the source of MPs to study the sorption and desorption behavior of nonylphenol (NP) on pristine and naturally aged PPs in summer and winter. The results show that summer-aged PP has more obvious property changes than winter-aged PP. The equilibrium sorption amount of NP on PP is summer-aged PP (477.08 μg/g) > winter-aged PP (407.14 μg/g) > pristine PP (389.29 μg/g). The sorption mechanism includes the partition effect, van der Waals forces, hydrogen bonds and hydrophobic interaction, among which chemical sorption (hydrogen bonding) dominates the sorption; moreover, partition also plays an important role in this process. Aged MPs' more robust sorption capacity is attributed to the larger specific surface area, stronger polarity and more oxygen-containing functional groups on the surface that are conducive to forming hydrogen bonds with NP. Desorption of NP in the simulated intestinal fluid is significant owning to intestinal micelles' presence: summer-aged PP (300.52 μg/g) > winter-aged PP (291.08 μg/g) > pristine PP (287.12 μg/g). Hence, aged PP presents a more vital ecological risk.
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Affiliation(s)
- Shuiyuan He
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, China
| | - Siyang Sun
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, China
| | - Honghai Xue
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, China; Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun, 130021, China
| | - Chunli Kang
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, China.
| | - Shuyi Yu
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, China
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22
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Kang M, Liu Y, Wang H, Weng Y, Gong D, Bai X. Physiological Toxicity and Antioxidant Mechanism of Photoaging Microplastics on Pisum sativum L. Seedlings. TOXICS 2023; 11:242. [PMID: 36977007 PMCID: PMC10056763 DOI: 10.3390/toxics11030242] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/21/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Recent studies have confirmed that changes in the physical properties of microplastics (MPs) trigger toxicological effects and ecological risks. To explore the toxicity of different types of MPs on plants, and the influence of MP photoaging, this study investigated the toxicity mechanisms of pristine, 7 and 14 d photoaged polystyrene (PS), polyamide (PA), polyethylene (PE), and polyethylene terephthalate (PET) MPs on seed germination, root growth, nutrient fraction, oxidative stress, and antioxidant systems of Pisum sativum L. (pea) seedlings. The results showed that pristine PS and 14 d photoaged PET inhibited seed germination. Compared to the pristine MPs, photoaged MPs had negative effects on root elongation. Moreover, photoaged PA and PE impeded the nutrient transport of soluble sugars from roots to stems. Notably, the production of superoxide anion radicals (•O2-) and hydroxyl radicals (•OH) through the photoaging of MPs exacerbated oxidative stress and reactive oxygen species formation in roots. Antioxidant enzyme data revealed that the activities of superoxide dismutase and catalase were significantly activated in photoaged PS and PE, respectively, in order to scavenge •O2- and hydrogen peroxide (H2O2) accumulation and alleviate lipid peroxidation levels in cells. These findings provide a new research perspective on the phytotoxicity and ecological risk of photoaged MPs.
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Affiliation(s)
- Mengen Kang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Yi Liu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Haoke Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Yuzhu Weng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Dongqing Gong
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Xue Bai
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
- Yangtze Institute for Conservation and Development, Hohai University, Nanjing 210098, China
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23
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Enhanced Adsorption of Bromoform onto Microplastic Polyethylene Terephthalate Exposed to Ozonation and Chlorination. Molecules 2022; 28:molecules28010259. [PMID: 36615452 PMCID: PMC9821972 DOI: 10.3390/molecules28010259] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/21/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022] Open
Abstract
This paper selected microplastic polyethylene terephthalate (PET), commonly found in water/wastewater plant effluent, to investigate the changes of PET oxidized under ozonation (designated as ozonized PET), followed by sodium hypochlorite oxidation (designated as ozonized-chlorinated PET) and studied their influence on the adsorption of the disinfection by-product bromoform (TBM). Fragmentation and cracks appeared on the oxidized PET surface. As the oxidation degree increased, the contact angle decreased from 137° to 128.90° and 128.50°, suggesting hydrophilicity was enhanced. FTIR and XPS analyses suggested that carbonyl groups increased on the surface of ozonized PET and ozonized-chlorinated PET, while the formation of intermolecular halogen bonds was possible when PET experienced dual oxidation. These physiochemical changes enhanced the adsorption of TBM. The adsorption capacity of TBM followed the order of ozonized-chlorinated PET (2.64 × 10−6 μg/μg) > ozonized PET (2.58 × 10−6 μg/μg) > pristine PET (2.43 × 10−6 μg/μg). The impact of raw water characteristics on the adsorption of TBM onto PETs, such as the pH, and the coexistence of inorganic ions and macromolecules (humic acid, surfactant, and bovine serum albumin) were studied. A different predominant adsorption mechanism between TBM and pristine PET or oxidized PETs was proposed.
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