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Dong J, Kang Y, Wang Y, Wu H, Hu Z, Guo Z, Zhang J. Critical role of benthic fauna in enhancing nanoplastics removal in constructed wetland: Performance, fate and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134962. [PMID: 38905985 DOI: 10.1016/j.jhazmat.2024.134962] [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: 03/01/2024] [Revised: 06/02/2024] [Accepted: 06/17/2024] [Indexed: 06/23/2024]
Abstract
The presence of nanoplastics (NPs) in wastewater poses a considerable risk to ecosystems. Although constructed wetlands (CWs) have the potential to removal NPs, their efficiency is limited by insufficient consideration of ecosystem integrity. Herein, three typical benthic fauna (Corbicula fluminea, Chironomus riparius and Tubifex tubifex) were added to CWs to improve the ecological integrity of CWs, and further enhance the ecological benefits. Results indicated that the addition of C. fluminea, C. riparius and T. tubifex increased NPs removal by 19.14 %, 17.02 %, and 15.76 % than that without benthic faunas, respectively. Based on fluorescence signal analysis, the presence of benthic fauna could intake NPs, and enhanced the adsorption of NPs by plants. The addition of C. fluminea significantly increased catalase (1541.82 ± 41.35 U/g), glutathione S-transferase (0.34 ± 0.02 U/g), and superoxide dismutase (116.33 ± 6.91 U/g) activities (p < 0.05) as a defense mechanism against NPs-induced oxidative stress. Metagenomic analysis revealed that the abundances of key enzymes involved in glycolysis, the tricarboxylic acid cycle, and polystyrene metabolism pathways were increased when C. fluminea was added, corresponding to the microbial degradation of NPs. Overall, the results of this study implied that the benthic fauna can efficiently remove NPs from wastewater in CWs.
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Affiliation(s)
- Jiahao Dong
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yan Kang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Yuqi Wang
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Haiming Wu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zhen Hu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zizhang Guo
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
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2
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Zhao X, Zhang T, Yang J, Zhang H, Yang L, Li Q, Hou N. Recovery capacity of constructed wetlands in response to multiple disturbances: Microbial interaction perspective. BIORESOURCE TECHNOLOGY 2024; 408:131155. [PMID: 39053595 DOI: 10.1016/j.biortech.2024.131155] [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: 04/23/2024] [Revised: 07/19/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
Previous studies have predominantly explored the response mechanisms of constructed wetlands (CWs) to singular disturbances. In practical applications, CWs are frequently subject to multiple disturbances, resulting in complex interference mechanisms. Therefore, this study aims to select harmful algal blooms and microalga ZM-5 as disturbances to investigate the response mechanisms of CWs. Results revealed a dynamic pattern in COD removal efficiency of CWs, with fluctuations at 39.0 ± 6.2 % and 80.1 ± 4.7 % during the disturbances, followed by a recovery to approximately 65.7 ± 3.2 %. Additionally, the CWs exhibited a capacity for self-recovery and enhanced stability by selectively promoting specific microbial communities through the regulation of the genes responsible for indole-3-acetic acid (IAA) and vitamin production. Importantly, this study underscored the establishment of a resilient microbial community structure within CWs following multiple disturbances, characterized by a more interconnected microbial network. These findings shed light on the adaptive mechanisms of CWs in the face of complex environmental challenges.
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Affiliation(s)
- Xinyue Zhao
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Tuoshi Zhang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Jinyi Yang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Han Zhang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Lan Yang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Qinglin Li
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Ning Hou
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, PR China.
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3
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Feng Y, Duan J, Yang C, Zou Q, Chen Z, Pu J, Xiang Y, Chen M, Fan M, Zhang H. Microplastics and benthic animals reshape the geochemical characteristics of dissolved organic matter by inducing changes in keystone microbes in riparian sediments. ENVIRONMENTAL RESEARCH 2024; 262:119806. [PMID: 39151559 DOI: 10.1016/j.envres.2024.119806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 08/10/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Dissolved organic matter (DOM) in riparian sediments plays a vital role in regulating element cycling and pollutant behavior of river ecosystems. Microplastics (MPs) and benthic animals (BAs) have been frequently detected in riparian sediments, influencing the substance transformation in river ecosystems. However, there is still a lack of systematic investigation on the effects of MPs and BAs on sediment DOM. This study investigated the impact of MPs and BAs on the geochemical characteristics of DOM in riparian sediments and their microbial mechanisms. The results showed that MPs and BAs increased sediment DOC concentration by 34.24%∼232.97% and promoted the conversion of macromolecular components to small molecular components, thereby reducing the humification degree of DOM. Mathematical model verified that the changes of keystone microbes composition in sediments were direct factors affecting the characteristics of DOM in riparian sediment. Especially, MPs tolerant microbes, including Planctomicrobium, Rhodobacter, Hirschia and Lautropia, significantly increased DOC concentration and decreased humification degree (P < 0.05). In addition, MPs and BAs could also influence keystone microbes in sediments by altering the structure of microbial network, thereby indirectly affecting DOM characteristics. The study demonstrates the pollution behavior of MPs in river ecosystems and provides a basis for protecting the ecological function of riparian sediments from MPs pollution.
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Affiliation(s)
- Yuanyuan Feng
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Jinjiang Duan
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Cheng Yang
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Qingping Zou
- School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Ziwei Chen
- Key Laboratory of Hydraulic and Waterway Engineering, Ministry of Education, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Jia Pu
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Yu Xiang
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Mengli Chen
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
| | - Meikun Fan
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Han Zhang
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
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An Q, Zheng N, Pan J, Ji Y, Wang S, Li X, Chen C, Peng L, Wang B. Association between plant microbiota and cadmium uptake under the influence of microplastics with different particle sizes. ENVIRONMENT INTERNATIONAL 2024; 190:108938. [PMID: 39111171 DOI: 10.1016/j.envint.2024.108938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 08/01/2024] [Accepted: 08/03/2024] [Indexed: 08/28/2024]
Abstract
Plant microbiota are an important factor impacting plant cadmium (Cd) uptake. However, little is known about how plant microbiota affects the Cd uptake by plants under the influence of microplastics (MPs) with different particle sizes. In this study, bacterial structure and assembly in the rhizosphere and endosphere in pakchoi were analyzed by amplicon sequencing of 16S rRNA genes under the influence of different particle sizes of polystyrene microplastics (PS-MPs) combined with Cd treatments. Results showed that there were no significant differences observed in the shoot endophytes among different treatments. However, compared to Cd treatment, larger-sized PS-MPs (2 and 20 μm) significantly increased community diversity and altered the structural composition of rhizosphere bacteria and root endophytes, while smaller-sized PS-MPs (0.2 μm) did not. Under the treatment of larger-sized PS-MPs, the niche breadth of rhizosphere bacteria and root endophytes were significantly increased. And larger-sized PS-MPs also maintained stability and complexity of bacterial co-occurrence networks, while smaller-sized PS-MPs reduced them. Furthermore, compared to Cd treatment, the addition of larger particle size PS-MPs decreased the proportion of homogeneous section, while increased the proportion of drift in root endophytic bacterial community assembly. The role of larger-sized MPs in the community assembly of rhizosphere bacteria was opposite. Using random forest and structural equation models, the study found that larger-sized PS-MPs can promote the colonization of specific bacterial taxa, such as Brevundimonas, AKAU4049, SWB02, Ellin6055, Porphyrobacter, Sphingorhabdus, Rhodobacter, Erythrobacter, Devosia and some other bacteria belonging to Alphaproteobacteria, in the rhizosphere and root endosphere. The colonization of these taxa can may induce the formation of biofilms in the roots, immobilize heavy metals through oxidation processes, and promote plant growth, thereby reducing Cd uptake by pakchoi. The findings of this study provide important insights into the microbial mechanisms underlying the influence of MPs with different particle sizes on plant Cd uptake.
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Affiliation(s)
- Qirui An
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
| | - Na Zheng
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China.
| | - Jiamin Pan
- Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun, Jilin, China
| | - Yining Ji
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
| | - Sujing Wang
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
| | - Xiaoqian Li
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
| | - Changcheng Chen
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
| | - Liyuan Peng
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
| | - Bo Wang
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, College of New Energy and Environment, Jilin University, China
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Song X, Zou H, Zhang Y, Yang J, Ding J. Microplastics alter the microbiota-mediated phosphorus profiles at sediment-water interface: Distinct microbial effects between sediment and plastisphere. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173048. [PMID: 38740204 DOI: 10.1016/j.scitotenv.2024.173048] [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: 02/29/2024] [Revised: 04/28/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
Microplastics (MPs) are ubiquitous in freshwater sediments, raising concern about their potential impacts on ecosystem services. However, the specific impacts of microbiota mediated by MPs in sediment and plastisphere compartments on P availability remain elusive. This investigation conducted a series of microcosm experiments utilizing eutrophic lake sediment amended with fuel-based polyethylene terephthalate (PET), bio-based polylactic acid (PLA) MPs, and a natural cobblestone substrate to unravel their effects. The findings highlighted that MPs induced alterations in bacterial communities in both sediment and plastisphere, consequently modifying P availabilities at the sediment-water interface (SWI). In comparison to non-biodegradable PET, biodegradable PLA MPs presented higher proportions of specific bacteria and functional genes associated with P profiles, such as Firmicutes, Ignavibacteriota, and P mineralizing genes in the sediment and plastisphere. This, in turn, elevated the levels of soluble reactive P in the porewater by 54.19 % (0-1 cm), 55.81 % (1-3 cm), and 18.24 % (3-5 cm), respectively. Additionally, PLA obviously altered P immobilization capacity and bioavailability, increasing the organic P fraction. Whereas, inert cobblestone exhibited negligible influence on P biogeochemical processes during the incubation. Moreover, the biofilm communities and those in the surrounding sediment specifically contributed to the changes in P profiles at the SWI. The functional genes associated with P profiles in the sediment mainly concentrate on P mineralization and P uptake/transport. In the plastisphere, P activation genes are obviously affected under MP exposure. This study fills the knowledge gap concerning the repercussions of MPs on ecosystem services.
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Affiliation(s)
- Xiaojun Song
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China
| | - Hua Zou
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China; Biomass Energy and Biological Carbon Reduction Engineering Center of Jiangsu Province, Wuxi 214122, China.
| | - Yunbo Zhang
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China
| | - Jiaxin Yang
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China
| | - Jiannan Ding
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China; Biomass Energy and Biological Carbon Reduction Engineering Center of Jiangsu Province, Wuxi 214122, China.
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Gao X, Li X, Wang Y, Lin C, Zuo Y, Li X, Xing W. Does invasive submerged macrophyte diversity affect dissimilatory nitrate reduction processes in sediments with varying microplastics? JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134510. [PMID: 38704909 DOI: 10.1016/j.jhazmat.2024.134510] [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: 02/20/2024] [Revised: 04/24/2024] [Accepted: 04/30/2024] [Indexed: 05/07/2024]
Abstract
Nitrogen removal is essential for restoring eutrophic lakes. Microorganisms and aquatic plants in lakes are both crucial for removing excess nitrogen. However, microplastic (MP) pollution and the invasion of exotic aquatic plants have become increasingly serious in lake ecosystems due to human activity and plant-dominant traits. This field mesocosm study explored how the diversity of invasive submerged macrophytes affects denitrification (DNF), anammox (ANA), and dissimilatory nitrate reduction to ammonium (DNRA) in lake sediments with varying MPs. Results showed that invasive macrophytes suppressed DNF rates, but DNRA and ANA were less sensitive than DNF to the diversity of invasive species. Sediment MPs increased the biomass of invasive species more than native species, but did not affect microbial processes. The effects of MPs on nitrate dissimilatory reduction were process-specific. MPs increased DNF rates and the competitive advantage of DNF over DNRA by changing the sediment environment. The decoupling of DNF and ANA was also observed, with increased DNF rates and decreased ANA rates. The study findings suggested new insights into how the invasion of exotic submerged macrophytes affects the sediment nitrogen cycle complex environments.
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Affiliation(s)
- Xueyuan Gao
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Xiaowei Li
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Yingcai Wang
- Eco-Environment Monitoring and Scientific Research Center, Changjiang Basin Ecology and Environment Administration, Ministry of Ecology and Environment, Wuhan 430010, China.
| | - Cheng Lin
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resource and Environment, Hubei University, Wuhan 430062, China
| | - Yanxia Zuo
- Analysis and Testing Center, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xiaolu Li
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | - Wei Xing
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Key Laboratory of Lake and Watershed Science for Water Security, Chinese Academy of Sciences, Wuhan 430074, China; Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China.
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7
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Li Y, Tang Y, Qiang W, Xiao W, Lian X, Yuan S, Yuan Y, Wang Q, Liu Z, Chen Y. Effect of tire wear particle accumulation on nitrogen removal and greenhouse gases abatement in bioretention systems: Soil characteristics, microbial community, and functional genes. ENVIRONMENTAL RESEARCH 2024; 251:118574. [PMID: 38452911 DOI: 10.1016/j.envres.2024.118574] [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: 01/24/2024] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/09/2024]
Abstract
Tire wear particles (TWPs), as predominant microplastics (MPs) in road runoff, can be captured and retained by bioretention systems (BRS). This study aimed to investigate the effect of TWPs accumulation on nitrogen processes, focusing on soil characteristics, microbial community, and functional genes. Two groups of lab-scale bioretention columns containing TWPs (0 and 100 mg g-1) were established. The removal efficiencies of NH4+-N and TN in BRS significantly decreased by 7.60%-24.79% and 1.98%-11.09%, respectively, during the 101 days of TWPs exposure. Interestingly, the emission fluxes of N2O and CO2 were significantly decreased, while the emission flux of CH4 was substantially increased. Furthermore, prolonged TWPs exposure significantly influenced the contents of soil organic matter (increased by 27.07%) and NH4+-N (decreased by 42.15%) in the planting layer. TWPs exposure also significantly increased dehydrogenase activity and substrate-induced respiration rate, thereby promoting microbial metabolism. Microbial sequencing results revealed that TWPs decreased the relative abundance of nitrifying bacteria (Nitrospira and Nitrosomonas) and denitrifying bacteria (Dechloromonas and Thauera), reducing the nitrification rate by 42.24%. PICRUSt2 analysis further indicated that TWPs changed the relative abundance of functional genes related to nitrogen and enzyme-coding genes.
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Affiliation(s)
- Yunqing Li
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Yinghui Tang
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Weibo Qiang
- Central & Southern China Municipal Engineering Design and Research Institute Co., Ltd., Wuhan, 430010, China
| | - Wenyu Xiao
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Xiaoke Lian
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Shaochun Yuan
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Ying Yuan
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Qinyi Wang
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Zhen Liu
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Yao Chen
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission, Chongqing Jiaotong University, Chongqing, 400074, China.
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Zhao X, Guo M, Wang Y, Jin M, Hou N, Wu H. Toxic effects of nanoplastics on biological nitrogen removal in constructed wetlands: Evidence from iron utilization and metabolism. WATER RESEARCH 2024; 256:121577. [PMID: 38593605 DOI: 10.1016/j.watres.2024.121577] [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: 03/18/2024] [Accepted: 04/05/2024] [Indexed: 04/11/2024]
Abstract
Nanoplastics (NPs) in wastewaters may present a potential threat to biological nitrogen removal in constructed wetlands (CWs). Iron ions are pivotal in microbially mediated nitrogen metabolism, however, explicit evidence demonstrating the impact of NPs on nitrogen removal regulated by iron utilization and metabolism remains unclear. Here, we investigated how NPs disturb intracellular iron homeostasis, consequently interfering with the coupling mechanism between iron utilization and nitrogen metabolism in CWs. Results indicated that microorganisms affected by NPs developed a siderophore-mediated iron acquisition mechanism to compensate for iron loss. This deficiency resulted from NPs internalization limited the activity of the electron transport system and key enzymes involved in nitrogen metabolism. Microbial network analysis further suggested that NPs exposure could potentially trigger destabilization in microbial networks and impair effective microbial communication, and ultimately inhibit nitrogen metabolism. These adverse effects, accompanied by the dominance of Fe3+ over certain electron acceptors engaged in nitrogen metabolism under NPs exposure, were potentially responsible for the observed significant deterioration in nitrogen removal (decreased by 30 %). This study sheds light on the potential impact of NPs on intracellular iron utilization and offers a substantial understanding of the iron-nitrogen coupling mechanisms in CWs.
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Affiliation(s)
- Xinyue Zhao
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Mengran Guo
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Yunan Wang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Ming Jin
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Ning Hou
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Haiming Wu
- School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China.
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Yang X, Chen Y, Liu T, Zhang L, Wang H, Chen M, He Q, Liu G, Ju F. Plastic particles affect N 2O release via altering core microbial metabolisms in constructed wetlands. WATER RESEARCH 2024; 255:121506. [PMID: 38552486 DOI: 10.1016/j.watres.2024.121506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/05/2024] [Accepted: 03/21/2024] [Indexed: 04/24/2024]
Abstract
Constructed wetlands (CWs) have been proven to effectively immobilize plastic particles. However, little is known about the differences in the impact of varying sized plastic particles on nitrous oxide (N2O) release, as well as the intervention mechanisms in CWs. Here, we built a lab-scale wetland model and introduced plastic particles of macro-, micro-, and nano-size at 100 μg/L for 370 days. The results showed that plastic particles of all sizes reduced N2O release in CWs, with the degrees being the strongest for the Nano group, followed by Micro and Macro groups. Meanwhile, 15N- and 18O-tracing experiment revealed that the ammoxidation process contributed the most N2O production, followed by denitrification. While for every N2O-releasing process, the contributing proportion of N2O in nitrification-coupled denitrification were most significantly cut down under exposing to macro-sized plastics and had an obvious increase in nitrifier denitrification in all groups, respectively. Finally, we revealed the three mechanism pathways of N2O release reduction with macro-, micro-, and nano-sized plastics by impacting carbon assimilation (RubisCO activity), ammonia oxidation (gene amo abundance and HAO activity), and N-ion transmembrane and reductase activities, respectively. Our findings thus provided novel insights into the potential effects of plastic particles in CWs as an eco-technology.
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Affiliation(s)
- Xiangyu Yang
- Key Laboratory of the Three Gorges Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Campus B, 83 Shabeijie, Shapingba, Chongqing 400044, China; Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China; Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Water Management, Faculty of Civil Engineering and Geosciences, Section of Sanitary Engineering, Delft University of Technology, Delft 2628 CN, the Netherlands; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Yi Chen
- Key Laboratory of the Three Gorges Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Campus B, 83 Shabeijie, Shapingba, Chongqing 400044, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing 400044, China.
| | - Tao Liu
- Key Laboratory of the Three Gorges Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Campus B, 83 Shabeijie, Shapingba, Chongqing 400044, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing 400044, China
| | - Lu Zhang
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, China
| | - Hui Wang
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, China
| | - Mengli Chen
- Key Laboratory of the Three Gorges Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Campus B, 83 Shabeijie, Shapingba, Chongqing 400044, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing 400044, China
| | - Qiang He
- Key Laboratory of the Three Gorges Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Campus B, 83 Shabeijie, Shapingba, Chongqing 400044, China; National Centre for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing 400044, China
| | - Gang Liu
- Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Water Management, Faculty of Civil Engineering and Geosciences, Section of Sanitary Engineering, Delft University of Technology, Delft 2628 CN, the Netherlands
| | - Feng Ju
- Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, China.
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10
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Huang JW, Sun YY, Li QS, Zhou HZ, Li YH, Fan XX, Wang JF. Increased risk of heavy metal accumulation in mangrove seedlings in coastal wetland environments due to microplastic inflow. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 349:123927. [PMID: 38582184 DOI: 10.1016/j.envpol.2024.123927] [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: 01/05/2024] [Revised: 03/02/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
The recovery phase of mangrove seedlings in coastal wetland ecosystems can be negatively affected by exposure to external pollutants. This study aimed to investigate the impact of microplastics (MPs) influx, specifically polystyrene (PS) and polymethyl methacrylate (PMMA), on the growth of Aegiceras corniculatum seedlings and their accumulation of heavy metals (HMs). PS and PMMA significantly increased HMs accumulation (up to 21.0-548%), particularly in the roots of seedlings, compared to the control treatment (CK). Additionally, elevated activities of malondialdehyde and catalase enzymes were observed in the leaves of seedlings, while peroxidase enzyme activity decreased. Topological analysis of the root sediment microbiota coexistence network revealed that the modularization data increased from 0.69 (CK treatment) to 1.07 (PS treatment) and 5.11 (PMMA treatment) under the combined stress of MPs and HMs. This suggests that the introduction of MPs intensifies microbial modularization. The primary cause of increased HMs accumulation in plants is the MPs input, which influences the secretion of organic acids by plants and facilitates the shift of HMs in sediment to bioavailable states. Furthermore, changes in microbial clustering may also contribute to the elevated HMs accumulation in plants. This study provides valuable insights into the effects of external pollutants on mangrove seedlings and offers new perspectives for the preservation and restoration of mangrove coastal wetlands.
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Affiliation(s)
- Jia-Wei Huang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Yun-Yun Sun
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Qu-Sheng Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Huan-Zhan Zhou
- Changsha Natural Resources Comprehensive Investigation Center, China Geological Survey, 410600, China
| | - Yi-Hao Li
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Guangzhou, 510655, China
| | - Xiang-Xiang Fan
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Jun-Feng Wang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China.
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11
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Li NY, Zhong B, Guo Y, Li XX, Yang Z, He YX. Non-negligible impact of microplastics on wetland ecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171252. [PMID: 38423326 DOI: 10.1016/j.scitotenv.2024.171252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
There has been much concern about microplastic (MP) pollution in marine and soil environments, but attention is gradually shifting towards wetland ecosystems, which are a transitional zone between aquatic and terrestrial ecosystems. This paper comprehensively reviews the sources of MPs in wetland ecosystems, as well as their occurrence characteristics, factors influencing their migration, and their effects on animals, plants, microorganisms, and greenhouse gas (GHG) emissions. It was found that MPs in wetland ecosystems originate mainly from anthropogenic sources (sewage discharge, and agricultural and industrial production) and natural sources (rainfall-runoff, atmospheric deposition, and tidal effects). The most common types and forms of MPs identified in the literature were polyethylene and polypropylene, fibers, and fragments. The migration of MPs in wetlands is influenced by both non-biological factors (the physicochemical properties of MPs, sediment characteristics, and hydrodynamic conditions) and biological factors (the adsorption and growth interception by plant roots, ingestion, and animal excretion). Furthermore, once MPs enter wetland ecosystems, they can impact the resident microorganisms, animals, and plants. They also have a role in global warming because MPs act as unique exogenous carbon sources, and can also influence GHG emissions in wetland ecosystems by affecting the microbial community structure in wetland sediments and abundance of genes associated with GHG emissions. However, further investigation is needed into the influence of MP type, size, and concentration on the GHG emissions in wetlands and the underlying mechanisms. Overall, the accumulation of MPs in wetland ecosystems can have far-reaching consequences for the local ecosystem, human health, and global climate regulation. Understanding the effects of MPs on wetland ecosystems is essential for developing effective management and mitigation strategies to safeguard these valuable and vulnerable environments.
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Affiliation(s)
- Na-Ying Li
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Bo Zhong
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Yun Guo
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xian-Xiang Li
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China
| | - Zao Yang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Yi-Xin He
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
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12
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Qu Y, Zhao Y, Yao X, Wang J, Liu Z, Hong Y, Zheng P, Wang L, Hu B. Salinity causes differences in stratigraphic methane sources and sinks. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 19:100334. [PMID: 38046178 PMCID: PMC10692758 DOI: 10.1016/j.ese.2023.100334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 10/09/2023] [Accepted: 10/12/2023] [Indexed: 12/05/2023]
Abstract
Methane metabolism, driven by methanogenic and methanotrophic microorganisms, plays a pivotal role in the carbon cycle. As seawater intrusion and soil salinization rise due to global environmental shifts, understanding how salinity affects methane emissions, especially in deep strata, becomes imperative. Yet, insights into stratigraphic methane release under varying salinity conditions remain sparse. Here we investigate the effects of salinity on methane metabolism across terrestrial and coastal strata (15-40 m depth) through in situ and microcosm simulation studies. Coastal strata, exhibiting a salinity level five times greater than terrestrial strata, manifested a 12.05% decrease in total methane production, but a staggering 687.34% surge in methane oxidation, culminating in 146.31% diminished methane emissions. Salinity emerged as a significant factor shaping the methane-metabolizing microbial community's dynamics, impacting the methanogenic archaeal, methanotrophic archaeal, and methanotrophic bacterial communities by 16.53%, 27.25%, and 22.94%, respectively. Furthermore, microbial interactions influenced strata system methane metabolism. Metabolic pathway analyses suggested Atribacteria JS1's potential role in organic matter decomposition, facilitating methane production via Methanofastidiosales. This study thus offers a comprehensive lens to comprehend stratigraphic methane emission dynamics and the overarching factors modulating them.
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Affiliation(s)
- Ying Qu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Yuxiang Zhao
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Xiangwu Yao
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Jiaqi Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Zishu Liu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Yi Hong
- Ocean College, Zhejiang University, Zhoushan, China
| | - Ping Zheng
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
| | - Lizhong Wang
- Ocean College, Zhejiang University, Zhoushan, China
| | - Baolan Hu
- Department of Environmental Engineering, Zhejiang University, Hangzhou, China
- Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China
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13
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Jing X, Shao Y, Wang H, Han G, Zhang J, Wang N, Xu J, Liu L, Chen G. Aging of polypropylene plastic and impacts on microbial community structure in constructed wetlands. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 347:123433. [PMID: 38278405 DOI: 10.1016/j.envpol.2024.123433] [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: 10/24/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 01/28/2024]
Abstract
The COVID-19 pandemic has resulted in a substantial surge in the usage of disposable plastic masks, generating a significant volume of waste and contributing to environmental pollution. Wetland ecosystems function as crucial repositories for terrestrial pollutants and are highly effective in retaining disposable masks composed mainly of PP material. These masks can endure extended periods in wetlands, experiencing natural degradation that may have potential implications on wetland ecosystems. Our findings demonstrate the natural aging process of disposable masks, resulting in the generation of microplastics (MPs) ranging in diameter from 10 to 30 μm over a 180-day timeframe. Examination of 16S rDNA data unveiled temporal fluctuations in microbial diversity in the wetland ecosystem. Initially, microbial diversity displayed a modest incline, which was succeeded by a subsequent decrease. With the progressive accumulation of plastic within the wetland, an ongoing decline in microbial diversity linked to nitrogen transformation was observed. This study provides valuable insights into the retention of disposable masks by wetlands amidst the COVID-19 pandemic, along with their consequential effects on wetland ecosystems, specifically pertaining to nitrogen cycling. It underscores the urgency of augmenting the safeguarding measures for wetland ecosystems.
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Affiliation(s)
- Xinxin Jing
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Yuanyuan Shao
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
| | - Hongbo Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Guolan Han
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Jian Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Ning Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Jingtao Xu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Lei Liu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Gao Chen
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan, 250100, China; State Key Laboratory of Nutrient Use and Management, Jinan, 250100, China
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14
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Pan W, Zhou Y, Xie H, Liang L, Zou G, Du L, Guo X. Plant and microbial response in constructed wetland treating tetracycline antibiotic polluted water: Evaluating the effects of microplastic size and concentration. CHEMOSPHERE 2024; 353:141553. [PMID: 38412891 DOI: 10.1016/j.chemosphere.2024.141553] [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: 09/19/2023] [Revised: 01/29/2024] [Accepted: 02/24/2024] [Indexed: 02/29/2024]
Abstract
Microplastics (MPs) and antibiotics are novel water pollutants that have attracted increasing attention. Constructed wetlands (CWs) are widely applied treating various types of polluted water. How these two new pollutants affect plants and microorganisms in CWs, especially deciphering the unknown roles of MPs size and concentration, is of great essential. Here, five CW treatments with submerged macrophyte Myriophyllum aquaticum were established to treat oxytetracycline (OTC) antibiotic-polluted water. The effects of polystyrene (PS) nanoplastics (NPs) (700 nm) and MPs (90-110 μm) on plant and microbial communities at 10 μg/L and 1 mg/L, respectively, were systematically evaluated. PS reduced the nitrogen and phosphorus removal efficiencies and inhibited OTC removal. Low doses (10 μg/L) of NPs and high doses (1 mg/L) of MPs had the greatest effects on plant and microbial responses. The overall effect of MPs was greater than that of NPs. Compared with high NPs concentration (1 mg/L), low concentrations (10 μg/L) had higher catalase (CAT), superoxide dismutase (SOD), and malondialdehyde (MDA) content. However, the activity and content of MPs at low concentrations (10 μg/L) were lower than those at high concentrations (1 mg/L). The coexistence of OTC and MPs/NPs decreased the microbial diversity and abundance. Low doses of NPs and high doses of MPs decreased the relative abundance of Abditibacteriota, Deinococccota, and Zixibacteria. Redundancy and network analyses revealed a strong correlation between pollutant removal and plant and microbial responses. NH4+-N and OTC removal was positively and negatively correlated with CAT, SOD, and MDA content, respectively. MDA positively correlated to chlorophyll content, whereas SOD showed a negative correlation with Chloroflexi. This study highlighted the scale effect of MPs in wastewater treatment via CWs. It enhances our understanding of the response of plants and microorganisms to the remediation of water co-polluted with MPs and antibiotics.
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Affiliation(s)
- Weiliang Pan
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China.
| | - Yi Zhou
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Huimin Xie
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Lin Liang
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China; Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Guoyuan Zou
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Lianfeng Du
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Xuan Guo
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China; China-New Zealand Joint Laboratory of Water Environment Research, Beijing, 100097, China.
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15
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Ye J, Zhu Y, Chen H, Tang J, Zhao X, Sun X, Zhang J, Chen Y, Guo Y, Fang N, Tan Y, Zhang T. Land use, stratified wastewater and sediment, and microplastic attribute factors jointly influence the microplastic prevalence and bacterial colonization patterns in sewer habitats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170653. [PMID: 38331294 DOI: 10.1016/j.scitotenv.2024.170653] [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: 10/31/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/10/2024]
Abstract
The capacity of microplastics to harbor and propagate bacteria has been the focus of attention over the last decade. Such microplastic-supported bacterial colonization behavior in the municipal sewer system could be a critical ecological link influencing the biogeochemical activities and risks in receiving waters in urban areas, given the alarming microplastic loads discharged there. This study conducted a large-scale survey covering a wide range of residential and industrial catchments in Shanghai, China. We aimed to assess the microplastic prevalence and bacterial colonization patterns in different sewer habitats and to explore the role of land use, stratified wastewater and sediment, and microplastic attributes in shaping the patterns. We found that the sewer system formed a temporal but pronounced microplastic pool, with land use playing a significant role in the variability of microplastic prevalence. Industrial sewers contained a high abundance of microplastics with large particle sizes, diverse polymer compositions, and shapes. However, while there was a spatial discrepancy between urban and suburban areas in the abundance of microplastics in residential sewers, their predominant polymer and shape types were simple, i.e., polyethylene terephthalate (PET) and fibers. Sewer habitat characteristics, particularly the stratified wastewater and sediment determined microbial colonization patterns. The latter acted as a long-term sink for microplastics and supported the high growth of colonizers. In contrast, the wastewater plastisphere presented novel niches, hosting communities with a marked proportion of unique bacterial genera after colonization. Besides, statistics showed a highly positive and dense co-occurrence network of the plastisphere communities, especially those from the industrial sewer sediment, with enhanced metabolic activity, cellular processes and systems, and increased human pathogenic potential. Findings indicated a coarse and uncertain effect of the selective pressure of microplastic attributes on plastisphere community structure differentiation.
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Affiliation(s)
- Jianfeng Ye
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Yi Zhu
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Hao Chen
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing 100038, China.
| | - Jianfei Tang
- College of Engineering, Shanghai Polytechnic University, Shanghai 201209, China
| | - Xin Zhao
- Shanghai Water Engineering Design and Research Institute Co., Ltd., Shanghai 200333, China
| | - Xiaonan Sun
- College of Environment, Hohai University, 210098, China
| | - Jinxu Zhang
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Yu Chen
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Yali Guo
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing 100038, China
| | - Ning Fang
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing 100038, China
| | - Yaqin Tan
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing 100038, China
| | - Ting Zhang
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing 100038, China
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16
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Zhang S, Shen C, Zhang F, Wei K, Shan S, Zhao Y, Man YB, Wong MH, Zhang J. Microplastics removal mechanisms in constructed wetlands and their impacts on nutrient (nitrogen, phosphorus and carbon) removal: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170654. [PMID: 38331284 DOI: 10.1016/j.scitotenv.2024.170654] [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: 12/08/2023] [Revised: 01/17/2024] [Accepted: 02/01/2024] [Indexed: 02/10/2024]
Abstract
Microplastics (MPs) are now prevalent in aquatic ecosystems, prompting the use of constructed wetlands (CWs) for remediation. However, the interaction between MPs and CWs, including removal efficiency, mechanisms, and impacts, remains a subject requiring significant investigation. This review investigates the removal of MPs in CWs and assesses their impact on the removal of carbon, nitrogen, and phosphorus. The analysis identifies crucial factors influencing the removal of MPs, with substrate particle size and CWs structure playing key roles. The review highlights substrate retention as the primary mechanism for MP removal. MPs hinder plant nitrogen uptake, microbial growth, community composition, and nitrogen-related enzymes, reducing nitrogen removal in CWs. For phosphorus and carbon removal, adverse effects of MPs on phosphorus elimination are observed, while their impact on carbon removal is minimal. Further research is needed to understand their influence fully. In summary, CWs are a promising option for treating MPs-contaminated wastewater, but the intricate relationship between MPs and CWs necessitates ongoing research to comprehend their dynamics and potential consequences.
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Affiliation(s)
- Shaochen Zhang
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
| | - Cheng Shen
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, PR China.
| | - Fuhao Zhang
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
| | - Kejun Wei
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
| | - Shengdao Shan
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, PR China
| | - Yaqian Zhao
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China
| | - Yu Bon Man
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, PR China
| | - Ming Hung Wong
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, PR China
| | - Jin Zhang
- Zhejiang Province Key Laboratory of Recycling and Eco-Treatment of Waste Biomass, Zhejiang University of Science and Technology, Hangzhou 310023, PR China.
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17
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Hu X, Chen Y. Response mechanism of non-biodegradable polyethylene terephthalate microplastics and biodegradable polylactic acid microplastics to nitrogen removal in activated sludge system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170516. [PMID: 38307283 DOI: 10.1016/j.scitotenv.2024.170516] [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: 10/21/2023] [Revised: 12/30/2023] [Accepted: 01/26/2024] [Indexed: 02/04/2024]
Abstract
The issue of microplastics (MPs) has gained more attention among researchers and the public; however, there is still a lot to be studied about its impact on biological wastewater treatment. In this study, the effects of non-biodegradable polyethylene terephthalate (PET) and biodegradable polylactic acid (PLA) on wastewater treatment by sequencing batch reactor (SBR) were compared. The results showed that PET and PLA reduced the removal efficiency of NH4+-N by 1.7 % and 21.2 %, respectively. Structural equation functional model (SEM) analysis was used to infer the potential mechanism of PLA affecting ammonia oxidation. PLA primarily inhibits the activity of ammonia monooxygenase (AMO), while promoting an increase in reactive oxygen species (ROS) and antioxidant enzyme activity. Accordingly, the toxic effect of PLA further reduced the abundance of ammonia-oxidizing bacteria. This study showed that biodegradable MPs have a greater potential impact on wastewater treatment than non-biodegradable MPs, which warrants further investigation.
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Affiliation(s)
- Xuan Hu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Ying Chen
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
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18
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Adomako MO, Wu J, Lu Y, Adu D, Seshie VI, Yu FH. Potential synergy of microplastics and nitrogen enrichment on plant holobionts in wetland ecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:170160. [PMID: 38244627 DOI: 10.1016/j.scitotenv.2024.170160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/22/2024]
Abstract
Wetland ecosystems are global hotspots for environmental contaminants, including microplastics (MPs) and nutrients such as nitrogen (N) and phosphorus (P). While MP and nutrient effects on host plants and their associated microbial communities at the individual level have been studied, their synergistic effects on a plant holobiont (i.e., a plant host plus its microbiota, such as bacteria and fungi) in wetland ecosystems are nearly unknown. As an ecological entity, plant holobionts play pivotal roles in biological nitrogen fixation, promote plant resilience and defense chemistry against pathogens, and enhance biogeochemical processes. We summarize evidence based on recent literature to elaborate on the potential synergy of MPs and nutrient enrichment on plant holobionts in wetland ecosystems. We provide a conceptual framework to explain the interplay of MPs, nutrients, and plant holobionts and discuss major pathways of MPs and nutrients into the wetland milieu. Moreover, we highlight the ecological consequences of loss of plant holobionts in wetland ecosystems and conclude with recommendations for pending questions that warrant urgent research. We found that nutrient enrichment promotes the recruitment of MPs-degraded microorganisms and accelerates microbially mediated degradation of MPs, modifying their distribution and toxicity impacts on plant holobionts in wetland ecosystems. Moreover, a loss of wetland plant holobionts via long-term MP-nutrient interactions may likely exacerbate the disruption of wetland ecosystems' capacity to offer nature-based solutions for climate change mitigation through soil organic C sequestration. In conclusion, MP and nutrient enrichment interactions represent a severe ecological risk that can disorganize plant holobionts and their taxonomic roles, leading to dysbiosis (i.e., the disintegration of a stable plant microbiome) and diminishing wetland ecosystems' integrity and multifunctionality.
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Affiliation(s)
- Michael Opoku Adomako
- Institute of Wetland Ecology & Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, China; School of Life Science, Taizhou University, Taizhou 318000, China
| | - Jing Wu
- Institute of Wetland Ecology & Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, China; School of Life Science, Taizhou University, Taizhou 318000, China
| | - Ying Lu
- School of Life Science, Taizhou University, Taizhou 318000, China
| | - Daniel Adu
- School of Management Science and Engineering, Jiangsu University, Zhejiang 212013, Jiangsu, China
| | - Vivian Isabella Seshie
- Department of Environmental and Safety Engineering, University of Mines and Technology, Tarkwa, Ghana
| | - Fei-Hai Yu
- Institute of Wetland Ecology & Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, China; School of Life Science, Taizhou University, Taizhou 318000, China.
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19
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Ding S, Gu X, Sun S, He S. Optimization of microplastic removal based on the complementarity of constructed wetland and microalgal-based system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169081. [PMID: 38104829 DOI: 10.1016/j.scitotenv.2023.169081] [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: 08/29/2023] [Revised: 11/06/2023] [Accepted: 12/01/2023] [Indexed: 12/19/2023]
Abstract
As one of the emblematic emerging contaminants, microplastics (MPs) have aroused great public concern. Nevertheless, the global community still insufficiently acknowledges the ecological health risks and resolution strategies of MP pollution. As the nature-based biotechnologies, the constructed wetland (CW) and microalgal-based system (MBS) have been applied in exploring the removal of MPs recently. This review separately presents the removal research (mechanism, interactions, implications, and technical defects) of MPs by a single method of CWs or MBS. But one thing with certitude is that the exclusive usage of these techniques to combat MPs has non-negligible and formidable challenges. The negative impacts of MP accumulation on CWs involve toxicity to macrophytes, substrates blocking, and nitrogen-removing performance inhibition. While MPs restrict MBS practical application by making troubles for separation difficulties of microalgal-based aggregations from effluent. Hence the combined strategy of microalgal-assisted CWs is proposed based on the complementarity of biotechnologies, in an attempt to expand the removing size range of MPs, create more biodegradable conditions and improve the effluent quality. Our work evaluates and forecasts the potential of integrating combination for strengthening micro-polluted wastewater treatment, completing the synergistic removal of MP-based co-pollutants and achieving long-term stability and sustainability, which is expected to provide new insights into MP pollution regulation and control.
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Affiliation(s)
- Shaoxuan Ding
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xushun Gu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shanshan Sun
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shengbing He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; Shanghai Engineering Research Center of Landscape Water Environment, Shanghai 200031, PR China.
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Ye J, Zhu Y, Chen H, Zhao X, Tang J, Zhang J, Chen Y, Guo Y, Tan Y, Zhang T. High-throughput absolute quantification sequencing reveals the adaptive succession and assembly pattern of plastisphere communities in municipal sewer systems: Influence of environmental factors and microplastic polymer types. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123136. [PMID: 38092341 DOI: 10.1016/j.envpol.2023.123136] [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: 08/09/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 01/26/2024]
Abstract
Municipal sewer systems have received increasing attention due to the magnitude of the microplastic stock and its potential ecological impacts. However, as a critical aspect of the adverse impacts, little is known about the plastisphere that forms in these engineered environments. Using high-throughput absolute quantification sequencing, we conducted a systemic study combining field survey and laboratory batch test to explain the general plastisphere pattern and the role of environmental and polymeric factors in driving plastisphere succession and assembly there. We demonstrated the capacity of microplastics to support high levels of microbial colonization, increasing by 8.7-56.0 and 1.26-5.62 times at field and laboratory scales, respectively, despite the less diverse communities hosted in the resulting plastisphere. Sediment communities exhibited higher diversity but greater loss of specific operational taxonomic units in their plastisphere than in the wastewater. The former plastisphere had primarily an enhanced methanogenesis-oriented metabolic network linked to hydrolysis fermentation, hydrogen-producing acetogenesis, and denitrification, while the latter had a pronounced niche partitioning and competitive interaction network. Exogenous substrate flux and composition were key in stimulating plastisphere community growth and succession. Furthermore, the high nitrogen baseline facilitated alternative niche formation for plastisphere nitrifiers and denitrifiers, and the plastisphere pathogens associated with denitrification and plastic biodegradation functions increased significantly. The aerobic state also promoted a 1.71 times higher colonizer load and a denser interaction pattern than the anaerobic state. Selective filtering by polymers was evident: polyethylene supported higher plastisphere diversity than polypropylene. This study provides new insights into the mechanisms driving colonizer loads and the adaptive succession and assembly of the plastisphere in such a typically hydrodynamic and highly contaminated environment. The results help to fill the knowledge gap in understanding the potential role of microplastics in shaping the microecology of sewers and increasing health risks and substrate loss during sewer transfer.
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Affiliation(s)
- Jianfeng Ye
- School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
| | - Yi Zhu
- School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
| | - Hao Chen
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing, 100038, China.
| | - Xin Zhao
- Shanghai Water Engineering Design and Research Institute Co., Ltd., Shanghai, 200333, China
| | - Jianfei Tang
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
| | - Jinxu Zhang
- School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
| | - Yu Chen
- School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China
| | - Yali Guo
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing, 100038, China
| | - Yaqin Tan
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing, 100038, China
| | - Ting Zhang
- Science and Technology Innovation Center for Eco-environmental Protection, Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200050, China; YANGTZE Eco-Environment Engineering Research Center, Three Gorges Corporation, Beijing, 100038, China
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21
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Gupta N, Parsai T, Kulkarni HV. A review on the fate of micro and nano plastics (MNPs) and their implication in regulating nutrient cycling in constructed wetland systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 350:119559. [PMID: 38016236 DOI: 10.1016/j.jenvman.2023.119559] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 10/06/2023] [Accepted: 11/04/2023] [Indexed: 11/30/2023]
Abstract
This review discusses the micro-nano plastics (MNPs) and their interaction with physical, chemical and biological processes in a constructed wetland (CW) system that is typically used as a nature-based tertiary wastewater treatment for municipal as well as industrial applications. Individual components of the CW system such as substrate, microorganisms and plants were considered to assess how MNPs influence the CW processes. One of the main functions of a CW system is removal of nutrients like nitrogen (N) and phosphorus (P) and here we highlight the pathways through which the MNPs influence CW's efficacy of nutrient removal. The presence of morphologically (size and shape) and chemically different MNPs influence the growth rate of microorganisms important in N and P cycling, invertebrates, decomposers, and the plants which affect the overall efficiency of a CW treatment system. Certain plant species take up the MNPs, and some toxicity has been observed. This review focuses on two significant aspects: (1) the presence of MNPs in a significant concentration affects the efficiency of N and P removal, and (2) the removal of MNPs. Because MNPs reduce the enzyme activities in abundance and overproduction of ROS oxidizes the enzyme active sites, resulting in the depletion of proteins, ultimately inhibiting nitrogen and phosphorus removal within the substrate layer. The review found that the majority of the studies used sand-activated carbon (SAC), granular-activated carbon (GAC), rice straw, granular limestone, and calcium carbonate, as a substrate for CW treatment systems. Common plant species used in the CW include Phragmites, Arabidopsis thaliana, Lepidium sativum, Thalia dealbata, and Canna indica, which were also found to be dominant in the uptake of the MNPs in the CWs. The MNPs were found to affect earthworms such as Eisenia fetida, Caenorhabditis elegans, and, Enchytraeus crypticus, whereas Metaphire vulgaris were found unaffected. Though various mechanisms take place during the removal process, adsorption and uptake mechanism effectively emphasize the removal of MNPs and nitrogen and phosphorus in CW. The MNPs characteristics (type, size, and concentration) play a crucial role in the removal efficiency of nano-plastics (NPs) and micro-plastics (MPs). The enhanced removal efficiency of NPs compared to MPs can be attributed to their smaller size, resulting in a faster reaction rate. However, NPs dose variation showed fluctuating removal efficiency, whereas MPs dose increment reduces removal efficiency. MP and NPs dose variation also affected toxicity to plants and earthworms as observed from data. Understanding the fate and removal of microplastics in wetland systems will help determine the reuse potential of wastewater and restrict the release of microplastics. This study provides information on various aspects and highlights future gaps and needs for MNP fate study in CW systems.
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Affiliation(s)
- Nikita Gupta
- School of Civil and Environmental Engineering, Indian Institute of Technology (IIT) Mandi, Kamand, Himachal Pradesh, 175005, India.
| | - Tanushree Parsai
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Harshad Vijay Kulkarni
- School of Civil and Environmental Engineering, Indian Institute of Technology (IIT) Mandi, Kamand, Himachal Pradesh, 175005, India.
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Li H, Tan L, Xu Y, Zheng X. Metagenomics insights into the performance and mechanism of soil infiltration systems on removing antibiotic resistance genes in rural sewage. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 346:118981. [PMID: 37742563 DOI: 10.1016/j.jenvman.2023.118981] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/14/2023] [Accepted: 09/09/2023] [Indexed: 09/26/2023]
Abstract
The removal of antibiotic resistance genes (ARGs) in sewage is of great concern, but advanced sewage treatment technologies are not suitable for rural areas, so the multi-layer soil infiltration system (MSL) has been developed for rural sewage treatment. However, little is known about the performance and function of MSL in the treatment of ARGs in rural sewage. Here, we optimized the matrix composition and structure of MSL and explored the efficacy and mechanism of MSL systems for ARG removal under different hydraulic conditions. The ARGs removal rate of MSL ranged from 41.51% to 99.67%, in which MSL with the middle hydraulic load, high pollution load, and continuous inflowing conditions showed the best removal performance. In addition, this system can operate stably and resist the temperature fluctuation, which showed an equivalent removal rate of ARGs in warm and cold seasons, amounting to 69.0%. The structural equation model revealed that microorganisms in sewage could significantly affect ARG removal (path coefficient = 0.91), probably owing to their interspecies competition. As for the internal system, the reduction of ARGs was mainly driven by microorganisms in the system matrix (path coefficient = 0.685), especially soil-mixture-block (SMB) microorganisms. The physicochemical factors of the matrix indirectly reduce ARGs by affecting the microorganisms that adhere to the matrices. Note that the pairwise alignment of nucleotide analysis demonstrated that the system matrix, especially biochar in the SMB, adsorbed ARGs and their hosts from the sewage, and in turn eliminated them by inhibiting the spread and colonization of hosts, thereby reducing the abundance of ARGs. Collectively, this study provides a deeper insight into the removal of ARGs from rural sewage by MSL, which can help improve sewage treatment technologies.
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Affiliation(s)
- Houyu Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China; Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin, 300191, China
| | - Lu Tan
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Yan Xu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China; Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin, 300191, China.
| | - Xiangqun Zheng
- Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing, 100081, China.
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Xing L, Zhang Y, Chang S, Tao L, Su G. Uptake, accumulation and translocation of traditional and novel organophosphate esters by rice seedlings in the presence of micro(nano)-polystyrene plastics: Effects of concentration and size of particles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 898:165534. [PMID: 37454839 DOI: 10.1016/j.scitotenv.2023.165534] [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: 04/19/2023] [Revised: 06/21/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Micro(nano)plastics (MNPs) and organophosphate esters (OPEs) are becoming ubiquitous as emerging pollutants. To data, the effects of MNPs on the uptake, accumulation and translocation of OPEs by rice plant are still unclear, especially for novel OPE species. In this study, the impacts of polystyrene MNPs of different sizes and concentrations on the uptake of eight OPEs (six traditional organophosphate triesters and two novel discovered aryl organophosphate triesters) by rice seedlings were investigated in hydroponic exposure experiments. The results showed that OPEs accumulated in a concentration-dependent manner in both the roots and shoots of rice seedlings. The impacts of MNPs on uptake by rice seedlings were concentration- and size-dependent by influencing the transpiration rate or activities of antioxidant enzymes. Especially, significant effects were usually found in exposure group of medium-size and high-concentration MNPs. MNPs had more obvious effects on OPE species with lower logKow in roots, whereas, more obvious effects on OPE species with higher logKow in shoots were observed. There was a significantly positive linear relationship between logTF and logKow (p < 0.001), and a significantly negative linear relationship between logRCF and logKow (p < 0.001), indicating that OPEs with higher hydrophobicity seemed to be more liable to be absorbed from solutions to roots, but difficult to further translocate to shoots. Without novel OPEs (bis-(2-ethylhexyl)-phenyl phosphate and tris(2,4-di-tert-butylphenyl)phosphate), better fits for a linear model for logKow and logRCF (or logTF) were exhibited, indicating differences between novel and traditional OPEs. This work highlights that the presence of MNPs could altered the characteristics of uptake, translocation and accumulation of OPEs in rice seedlings, and provides an important evidence for comprehensive control strategy of new pollutants.
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Affiliation(s)
- Liqun Xing
- State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering, Yancheng 224000, China.
| | - Yayun Zhang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Sheng Chang
- State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Liyue Tao
- China Design Group Co., Ltd, Nanjing 210014, China
| | - Guanyong Su
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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24
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Tian J, Li P, Luo Y, Yan H, Liu J, Pan Z, Chen Y, Wang R, Cheng Y, Zhou H, Li J, Li X, Tan Z. Insights of microalgal municipal wastewater treatment at low temperatures: Performance, microbiota patterns, and cold-adaptation of tubular and aeration column photobioreactors. CHEMOSPHERE 2023; 340:139910. [PMID: 37611753 DOI: 10.1016/j.chemosphere.2023.139910] [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: 05/12/2023] [Revised: 07/28/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
In order to refine the treatment of microalgae consortium (MC) for municipal wastewater (MWW) during the winter, this study investigated the effectiveness of tubular and aeration column photobioreactors (TPBR and APBR) in wastewater treatment plant (WWTP) during winter by two start-up modes: microalgae/microalgae-activated sludge (AS). The operation results showed that under 5.7-13.1 °C, TPBR enhanced the assimilation of N and P pollutant by microalgal accumulation, meeting the Chinese discharge standard within 24 h (NH4+-N, TP, and COD ≤8.0, 0.5, and 50 mg·L-1). The microbial community profiles were identified and showed that inoculating AS under low-temperature still promoted bacterial interspecific association, but influenced by the inhibition of microbial diversity by the homogeneous circulation of TPBR, the nitrogen transfer function of MC was lower than that of APBR at low temperatures, except nitrogen fixation (K02588), nitrosification (K10944, K10945, and K10946), assimilatory nitrate reduction (K00366), and ammonification (K01915 and K05601). And the intermittent aeration in the APBR was still beneficial in increasing microbial diversity, which was more beneficial for reducing COD through microbial collaboration. In the treatment, the cryotolerant MGPM were Delftia, Romboutsia, Rhizobiales, and Bacillus, and the cold stress-related genes that were highly up-regulated were defense signaling molecules (K03671 and K00384), cold shock protein gene (K03704), and cellular protector (K01784) were present in both PBRs. This study provided a reference for the feasibility of the low temperature treatment of MC with the different types of PBR, which improved the application of wastewater treatment in more climatic environments.
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Affiliation(s)
- Jiansong Tian
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China; Institute of Resources and Environmental Engineering, Mianyang Teacher's College, Mianyang, 621000, China
| | - Pan Li
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China; Institute of Resources and Environmental Engineering, Mianyang Teacher's College, Mianyang, 621000, China
| | - Yajun Luo
- Institute of Resources and Environmental Engineering, Mianyang Teacher's College, Mianyang, 621000, China
| | - Heng Yan
- Institute of Resources and Environmental Engineering, Mianyang Teacher's College, Mianyang, 621000, China
| | - Jian Liu
- Institute of Resources and Environmental Engineering, Mianyang Teacher's College, Mianyang, 621000, China
| | - Zhicheng Pan
- Haitian Water Group Co., LTD., Chengdu, 610203, China
| | - Yangwu Chen
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Rui Wang
- Haitian Water Group Co., LTD., Chengdu, 610203, China
| | - Yiwei Cheng
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Houzhen Zhou
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Junjie Li
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Xin Li
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Zhouliang Tan
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
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Liu M, Yu X, Yang M, Shu W, Cao F, Liu Q, Wang J, Jiang Y. The co-presence of polystyrene nanoplastics and ofloxacin demonstrates combined effects on the structure, assembly, and metabolic activities of marine microbial community. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132315. [PMID: 37604038 DOI: 10.1016/j.jhazmat.2023.132315] [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: 05/29/2023] [Revised: 07/27/2023] [Accepted: 08/14/2023] [Indexed: 08/23/2023]
Abstract
Nanoplastic is increasing in environments and can address toxic effects on various organisms. Particle size, concentration, and surface functionalization most influence nanoplastic toxicity. Besides, nanoplastic can adsorb other contaminants (e.g., antibiotics) to aggravate its adverse effects. The combined effects of nanoplastics and antibiotics on planktonic/benthic microbial communities, however, are still largely unknown. In this study, the combined effects of polystyrene nanoplastic and ofloxacin on the structure, assembly, and metabolic activities of marine microbial communities were investigated based on amplicon sequencing data. The results mainly demonstrate that: (1) nanoplastic and ofloxacin have greater impacts on prokaryotic communities than eukaryotic ones; (2) niche breadths of planktonic prokaryotes and benthic eukaryotes were shrank with both high nanoplastic and ofloxacin concentrations; (3) increased ofloxacin mainly reduces nodes/edges of co-occurrence networks, while nanoplastic centralizes network modularity; (4) increased nanoplastic under high ofloxacin concentration induces more differential prokaryotic pathways in planktonic communities, while benthic communities are less influenced. The present work indicates that co-presence of nanoplastics and ofloxacin has synergistic combined effects on community structure shifts, niche breadth shrinking, network simplifying, and differential prokaryotic pathways inducing in marine microbial communities, suggesting nanoplastics and its combined impacts with other pollutions should be paid with more concerns.
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Affiliation(s)
- Mingjian Liu
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Xiaowen Yu
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Mengyao Yang
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Wangxinze Shu
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Furong Cao
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Qian Liu
- MoE Laboratory of Marine Chemistry Theory and Technology, Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266101, China.
| | - Jun Wang
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Yong Jiang
- MoE Laboratory of Evolution and Marine Biodiversity, Institute of Evolution and Marine Biodiversity & College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
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Zhao Y, Hu Z, Xie H, Wu H, Wang Y, Xu H, Liang S, Zhang J. Size-dependent promotion of micro(nano)plastics on the horizontal gene transfer of antibiotic resistance genes in constructed wetlands. WATER RESEARCH 2023; 244:120520. [PMID: 37657315 DOI: 10.1016/j.watres.2023.120520] [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: 05/26/2023] [Revised: 08/07/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023]
Abstract
Constructed wetlands (CWs) have been identified as significant sources of micro(nano)plastics (MPs/NPs) and antibiotic resistance genes (ARGs) in aquatic environments. However, little is known about the impact of MPs/NPs exposure on horizontal gene transfer (HGT) of ARGs and shaping the corresponding ARG hosts' community. Herein, the contribution of polystyrene (PS) particles (control, 4 mm, 100 μm, and 100 nm) to ARG transfer was investigated by adding an engineered fluorescent Escherichia coli harboring RP4 plasmid-encoded ARGs into CWs. It was found MPs/NPs significantly promoted ARG transfer in a size-dependent manner in each CW medium (p < 0.05). The 100 μm-sized PS exhibited the most significant promotion of ARG transfer (p < 0.05), whereas 100 nm-sized PS induced limited promotion due to its inhibitory activity on microbes. The altered RP4-carrying bacterial communities suggested that MPs/NPs, especially 100 µm-PS, could recruit pathogenic and nitrifying bacteria to acquire ARGs. The increased sharing of RP4-carrying core bacteria in CW medium further suggested that ARGs can spread into CW microbiome using MPs/NPs as carriers. Overall, our results highlight the high risks of ARG dissemination induced by MPs/NPs exposure and emphasize the need for better control of plastic disposal to prevent the potential health threats.
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Affiliation(s)
- Yanhui Zhao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, P.R. China
| | - Zhen Hu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, P.R. China.
| | - Huijun Xie
- Environmental Research Institute, Shandong University, Qingdao 266237, P.R. China
| | - Haiming Wu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, P.R. China
| | - Yuechang Wang
- Beijing Further Tide Eco-construction Co., Ltd, Beijing 100012, P.R. China
| | - Han Xu
- College of Agriculture and Forestry Science, Linyi University, Linyi 276000, P.R. China
| | - Shuang Liang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, P.R. China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, P.R. China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, P.R. China.
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27
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Qin P, Cui H, Li P, Wang S, Fan S, Lu J, Sun M, Zhang H, Wang S, Su X, Fu H, Hu X, Lin J, Zhang Y, Ding W, Zhang W. Early stage of biofilm assembly on microplastics is structured by substrate size and bacterial motility. IMETA 2023; 2:e121. [PMID: 38867926 PMCID: PMC10989967 DOI: 10.1002/imt2.121] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 05/07/2023] [Accepted: 05/16/2023] [Indexed: 06/14/2024]
Abstract
The taxonomic structure of biofilms on 0.3-mm microplastics differed significantly from that on 3-mm microplastics or glass particles. Compared with the 3-mm microplastics, biofilms on 0.3-mm microplastics were enriched for genes involved in flagellar-based motility and chemotaxis, pointing to a more 'mobile' community. The association between motility and bacterial colonization of 0.3-mm microplastics was observed through laboratory experiments using isolated strains.
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Affiliation(s)
- Peng Qin
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Han Cui
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Panxin Li
- College of Life SciencesYan'an UniversityYan'anChina
| | - Shuaitao Wang
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Shen Fan
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Jie Lu
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Meng Sun
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Heng Zhang
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Shougang Wang
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- MOE Key Laboratory of Marine Genetics and BreedingOcean University of ChinaQingdaoChina
| | - Xiaoyan Su
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of ChinaQingdaoChina
| | - Hui‐Hui Fu
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of ChinaQingdaoChina
| | - Xiaoli Hu
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- MOE Key Laboratory of Marine Genetics and BreedingOcean University of ChinaQingdaoChina
| | - Jinshui Lin
- College of Life SciencesYan'an UniversityYan'anChina
| | - Yu‐Zhong Zhang
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of ChinaQingdaoChina
- State Key Laboratory of Microbial TechnologyShandong UniversityQingdaoChina
| | - Wei Ding
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- MOE Key Laboratory of Marine Genetics and BreedingOcean University of ChinaQingdaoChina
| | - Weipeng Zhang
- Institute of Evolution & Marine BiodiversityOcean University of ChinaQingdaoChina
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
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Huang J, Li R, Ma Y, Cao C, Li X, Han T, Cao M. Effects of macrophytes on micro - And nanoplastic retention and cycling in constructed wetlands. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121259. [PMID: 36804147 DOI: 10.1016/j.envpol.2023.121259] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Macrophytes play the important roles in purifying pollutants of constructed wetlands (CWs), while their effects on CWs exposed to micro/nano plastics are not clear. Therefore, planted and unplanted CWs were established to reveal the impacts of macrophytes (Iris pseudacorus) on the overall performance of CWs under polystyrene micro/nano plastics (PS MPs/NPs) exposure. Results showed that macrophytes effectively enhanced the interception capacities of CWs to PS NPs, and significantly promoted the removal of nitrogen and phosphorus after exposed to PS MPs/NPs. Meanwhile, macrophytes improved the activities of dehydrogenase, urease, and phosphatase. Sequencing analysis showed that macrophytes optimized the composition of microbial communities in CWs and stimulated the growth of functional bacteria involved in nitrogen and phosphorus transformation. Moreover, macrophytes further altered the absolute abundance of nitrogen transformation functional genes (amoA, nxrA, narG and nirS). Functional annotation analysis revealed that macrophytes promoted metabolic functions such as Xenobiotics, Amino acids, Lipids metabolism and Signal transduction, ensuring the metabolic balance and homeostasis of microbes under PS MPs/NPs stress. These results exhibited profound implications for the comprehensive evaluation on the roles of macrophytes in CWs for treating wastewater containing PS MPs/NPs.
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Affiliation(s)
- Juan Huang
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China.
| | - Rui Li
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Yixuan Ma
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Chong Cao
- Department of Municipal Engineering, College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Xuan Li
- Jiangsu Environmental Engineering Technology Co., Ltd., Jiangsu Environmental Protection Group Co. Ltd., Nanjing, 210019, China
| | - Tingwei Han
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Meifang Cao
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 211189, China
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Ren Z, Guo H, Jin H, Wang Y, Zhang G, Zhou J, Qu G, Sun Q, Wang T. P, N, and C-related functional genes in SBR system promoted antibiotics resistance gene transmission under polystyrene microplastics stress. WATER RESEARCH 2023; 235:119884. [PMID: 36958218 DOI: 10.1016/j.watres.2023.119884] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/11/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Wastewater treatment plants (WWTPs) are important sinks of microplastics (MPs) and antibiotics resistance genes (ARGs). Information regarding connections between functional modules of WWTPs and spread of ARGs under MPs stress is still lacking. In this study, correlations between P-, N-, and C-related functional genes and ARGs in a sequencing batch reactor (SBR) system were evaluated under polystyrene (PS) MPs stress. Total P and chemical oxygen demand (COD) in effluent showed no significant changes under 0.5-50 mg L-1 PS MPs stress within 32 cycle treatment periods of SBR, while 0.5 mg L-1 PS MPs affected the N cycling process. PS MPs (0.5-50 mg L-1) promoted the richness and diversity of microbial community in SBR, and the denitrification process was exuberant. PS MPs with a low dosage (0.5-5 mg L-1) enhanced secretion of extracellular polymeric substances and promoted expression levels of functional genes related to C fixation, C degradation, P cycling, and N cycling. Simultaneously, aac(3)-II, blaTEM-1, and tetW increased by 27.13%, 38.36%, and 9.57% under low dosages of PS MPs stress; more importantly, the total absolute abundance of intI1 nearly doubled. 78.4% of these P-, N-, and C-related functional genes were positively correlated with intI1, thus favoring transmission of ARGs. This study firstly disclosed the underlying correlations between functional modules of WWTPs and spread of ARGs under MPs stress.
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Affiliation(s)
- Zhiyin Ren
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - He Guo
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Hekai Jin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Yanjie Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Guodong Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Jian Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Guangzhou Qu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Qiuhong Sun
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Tiecheng Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China.
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30
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Ma X, Li Y, Niu L, Shang J, Yang N. Microbial community structure and denitrification responses to cascade low-head dams and their contribution to eutrophication in urban rivers. ENVIRONMENTAL RESEARCH 2023; 221:115242. [PMID: 36634891 DOI: 10.1016/j.envres.2023.115242] [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: 12/08/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Low-head dams are one of the most common hydraulic facilities, yet they often fragment rivers, leading to profound changes in aquatic biodiversity and river eutrophication levels. Systematic assessments of river ecosystem structure and functions, and their contribution to eutrophication, are however lacking, especially for urban rivers where low-head dams prevail. In this study, we address this gap with a field survey on microbial community structure and ecosystem function, in combination with hydrological, environmental and ecological factors. Our findings revealed that microbial communities showed significant differences among the cascade impoundments, which may be due to the environment heterogeneity resulting from the cascade low-head dams. The alternating lentic-lotic flow environment created by the low-head dams caused nutrient accumulation in the cascade impoundments, enhancing environmental sorting and interspecific competition relationships, and thus possibly contributing to the reduction in sediment denitrification function. Decreased denitrification led to excessive accumulation of nutrients, which may have aggravated river eutrophication. In addition, structural equation model analysis showed that flow velocity may be the key controlling factor for river eutrophication. Therefore, in the construction of river flood control and water storage systems, the location, type and water storage capacity of low-head dams should be fully considered to optimize the hydrodynamic conditions of rivers. To summarize, our findings revealed the cumulative effects of cascade low-head dams in an urban river, and provided new insights into the trade-off between construction and decommissioning of low-head dams in urban river systems.
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Affiliation(s)
- Xin Ma
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, PR China; Research Institute of Mulan Ecological River, Putian, 351100, PR China
| | - Yi Li
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, PR China; Research Institute of Mulan Ecological River, Putian, 351100, PR China.
| | - Lihua Niu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China; Research Institute of Mulan Ecological River, Putian, 351100, PR China.
| | - Jiahui Shang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Nan Yang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
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31
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Wang Y, Jiao M, Li T, Li R, Liu B. Role of mangrove forest in interception of microplastics (MPs): Challenges, progress, and prospects. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130636. [PMID: 37056008 DOI: 10.1016/j.jhazmat.2022.130636] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/04/2022] [Accepted: 12/18/2022] [Indexed: 06/19/2023]
Abstract
Mangroves receive microplastics (MPs) from terrestrial, marine and atmospheric sources, acting as a huge filter for environmental MPs between land and sea. Due to the high primary production and complex hydrodynamic conditions in mangroves, MPs are extensively intercepted in various ways while flowing through mangroves, leading to a long-standing but fiercely increasing MPs accumulation. However, current researches mainly focused on the occurrence, source and fate of MPs pollution in mangroves, ignoring the role of mangrove forests in the interception of MPs. Our study firstly demonstrates that mangrove ecosystems have significantly greater MPs interception capacity than their surrounding environments. Then, the current status of studies related to the interception of MPs in mangrove ecosystems is comprehensively reviewed, with the main focus on the interception process and mechanisms. At last, the most pressing shortcomings of current research are highlighted regarding the intercepted flux, interception mechanisms, retention time and ecological risks of MPs in mangrove ecosystems and the relevant future perspectives are provided. This review is expected to emphasize the critical role of mangrove forests in the interception of MPs and provide the foundational knowledge for evaluating the MPs interception effect of mangrove forests globally.
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Affiliation(s)
- Yijin Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China
| | - Meng Jiao
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China
| | - Tiezhu Li
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Ruilong Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
| | - Beibei Liu
- Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China.
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Ouyang Z, Li S, Xue J, Liao J, Xiao C, Zhang H, Li X, Liu P, Hu S, Guo X, Zhu L. Dissolved organic matter derived from biodegradable microplastic promotes photo-aging of coexisting microplastics and alters microbial metabolism. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130564. [PMID: 37055972 DOI: 10.1016/j.jhazmat.2022.130564] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/21/2022] [Accepted: 12/05/2022] [Indexed: 06/19/2023]
Abstract
Dissolved organic matter (DOM) leaching from biodegradable microplastics (BMPs) and its characteristics and corresponding environmental implication are rarely investigated. In this study, the main component of DOM leachate from the two BMPs (polyadipate/butylene terephthalate (PBAT)/polycaprolactone (PCL)) was verified by using excitation-emission matrix-parallel factor analysis (EEM-PARAFAC). The PBAT-DOM (PBOM) was aromatized and terrestrial. Comparatively, PCL-DOM (PLOM) had low molecular weight. PBOM contained protein-like components while PLOM contained tryptophan and tyrosine components. Interestingly, both PBOM and PLOM could accelerate the decomposition and oxidation of coexisting polystyrene (PS) under light irradiation. Further, the difference in composition and the properties of BMPs-DOM significantly affected its photochemical activity. The high territoriality and protein-like component of PBOM significantly promoted the generation of 1O2 and O2•-, which caused faster disruptions to the backbone of PS. Simultaneously, the microbial community's richness, diversity, and metabolism were obviously improved under the combined pressure of aged PS and BMPs-DOM. This study threw light on the overlooked contribution of DOM derived from BMPs in the aging process of NMPs and their impact on the microbial community and provided a promising strategy for better understanding of combined MPs' fate and environmental risk.
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Affiliation(s)
- Zhuozhi Ouyang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China
| | - Shuxing Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jincheng Xue
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jinmo Liao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chuanqi Xiao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hong Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaohan Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Peng Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China
| | - Shiwen Hu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of the Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China.
| | - Lingyan Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China; Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
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33
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Chen M, Mei H, Qin H, Yang X, Guo F, Chen Y. Pyrite coupled with biochar alleviating the toxicity of silver nanoparticles on pollutants removal in constructed wetlands. ENVIRONMENTAL RESEARCH 2023; 219:115074. [PMID: 36528047 DOI: 10.1016/j.envres.2022.115074] [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: 11/13/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Silver nanoparticles (AgNPs) has been widely detected in the substrates of constructed wetlands (CWs), posing threaten to pollutants removal efficiency of CWs. However, the way to alleviate the toxicity of AgNPs on CWs is unclear. In this study, the gravel (GR), biochar (BC), pyrite (PY) and pyrite coupled with biochar matrix (PYBC) were selected as substrates to restore the pollutants removal efficiency of CWs under the exposure to the environment (0.2 mg/L) and accumulation (10 mg/L) concentration of AgNPs. Results showed that the BC and PY showed limited mitigation effects, while the PYBC alleviated the toxicity significantly. Especially in the exposure to the accumulation concentration of AgNPs, the removal of NH4+-N, TN, COD and TP in the PYBC were 10.2%, 8.3%, 9.4% and 10.7% higher than that in the GR, respectively. Mechanism analysis verified that AgNPs were transformed into Ag-Fe-S core shell aggregates (size >200 nm) decreasing bioavailability and the damage to cytomembrane. The PYBC restored the nitrogen removal efficiency by increasing the abundance of Nitrospira and Geothrix, which these bacteria were defined as nitrifiers and Feammox bacteria. This study provides a promising strategy to mitigate AgNPs' toxicity on the pollutant removal efficiency in CWs.
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Affiliation(s)
- Mengli Chen
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Han Mei
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Hao Qin
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Xiangyu Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fucheng Guo
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Yi Chen
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China.
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34
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Chen M, Yang D, Guo F, Deng R, Nie W, Li L, Yang X, Liu S, Chen Y. Which sediment fraction mainly drives microplastics aging process: Dissolved organic matter or colloids? JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130310. [PMID: 36370481 DOI: 10.1016/j.jhazmat.2022.130310] [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: 06/25/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Riparian sediment is the last barrier preventing contaminants from polluting aquatic ecosystems. Recently, microplastics (MPs) have frequently been found in sediments. However, the MP aging process and its impact on sediments remain unknown. This study aimed to identify the key driving factors and mechanisms of riparian sediment on MPs aging behavior. The results showed that MPs surface suffered heavy breakage and the oxygen-to-carbon ratio of MPs increased by 268 % after accumulation in sediment for 214 d. The carbonyl index revealed that the degree of MP aging driven by dissolved organic matter (DOM) was 6.7-83.6 % greater than that of colloids, indicating that DOM was the key sediment fraction driving MP aging. Sunlight was an important environmental factor that enhanced MPs aging by sediment fractions, because photo-irradiated DOM produced hydroxyl and superoxide radicals to damage the MPs structure. Benzoic acid, dibenzoylmethane, and 4-heptyl-4,6-diphenyl-tetrahydro-pytan-2-one were the main products during the MP aging process under the interaction of sunlight and DOM, which showed acute toxicity to aquatic organisms and caused more severe toxicity during the chronic period. These results clearly clarify the behavior and environmental risk of MPs after accumulation in sediment, providing guide information to control MP pollution in the riparian zone.
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Affiliation(s)
- Mengli Chen
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Dongxu Yang
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Fucheng Guo
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Ruoyu Deng
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Wenbo Nie
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Lanxi Li
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Xiangyu Yang
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Shushan Liu
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China
| | - Yi Chen
- College of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of education, Chongqing University, Chongqing 400045, China.
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Zhang S, Wang H, Liu M, Yu H, Peng J, Cao X, Wang C, Liu R, Kamali M, Qu J. Press perturbations of microplastics and antibiotics on freshwater micro-ecosystem: Case study for the ecological restoration of submerged plants. WATER RESEARCH 2022; 226:119248. [PMID: 36323200 DOI: 10.1016/j.watres.2022.119248] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 10/03/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Microplastics (MPs) can adsorb antibiotics to form complex pollutants, which seriously threatens the health of freshwater ecosystems. Few studies have examined the combined pollution characteristics of microplastics (MPs) and antibiotics in restored freshwater ecosystems and their effects on the growth traits of the aquatic primary producers. We studied both the ecotoxicological effects of polyethylene (PE) MPs and the antibiotics sulfanilamide (sulfa, SA) on the structural (diversity etc.,) and functional (nutrient cycling etc.,) properties of water-plant-sediment ecosystems. The synergistic toxic effects of PE and SA resulted in a reduction in the chlorophyll content and chloroplast fluorescence. Meanwhile, PE and SA single/combined pollution stress inhibits the radial oxygen loss in roots, and activates the antioxidant defense system in leaves. The change in the growth response characteristics of Vallisneria natans (V. natans) under oxidative stress induced by single/combined pollution showed a dosage effect. The microbial compositions of the overlying water and sediment were significantly changed by the pollution exposure, as evidenced by the increased microbial diversity and altered microbial taxa distribution. An increase in the total concentrations of sulfa in the overlying water was accompanied by an increase in the relative abundances of resistance genes. PE-MPs significantly affected the removal of total nitrogen and antibiotics from the overlying water. The interaction between PE and SA affects ammonia and nitrite nitrogen exchange in water-sediment systems. Thus, this study investigated the effects of combined MP and antibiotics pollution on the growth state, metabolic function, microbial community structure and microbial diversity of the freshwater ecosystems. The mechanism underlying of the combined polyethylene-sulfanilamide (PE-SA) effect on the V. natans was revealed. In addition, the correlation between different environmental factors was analyzed, and a structural equation model was constructed. This study provides primary data for evaluating the ecological and environmental effects of combined PE-SA pollution and its possible risks. Moreover, it provides a reference index for the study of ecological wetland environments and phytoremediation.
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Affiliation(s)
- Siyu Zhang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hao Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Miaomiao Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Hongwei Yu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Jianfeng Peng
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Xiaofeng Cao
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Chunrong Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Ruiping Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Mohammadreza Kamali
- Department of Chemical Engineering, Process and Environmental Technology Lab, KU Leuven, J. De Nayerlaan 5, Sint-Katelijne-Waver B-2860, Belgium
| | - Jiuhui Qu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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