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Ali SS, Elsamahy T, Al-Tohamy R, Sun J. A critical review of microplastics in aquatic ecosystems: Degradation mechanisms and removing strategies. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 21:100427. [PMID: 38765892 PMCID: PMC11099331 DOI: 10.1016/j.ese.2024.100427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 04/21/2024] [Accepted: 04/21/2024] [Indexed: 05/22/2024]
Abstract
Plastic waste discarded into aquatic environments gradually degrades into smaller fragments, known as microplastics (MPs), which range in size from 0.05 to 5 mm. The ubiquity of MPs poses a significant threat to aquatic ecosystems and, by extension, human health, as these particles are ingested by various marine organisms including zooplankton, crustaceans, and fish, eventually entering the human food chain. This contamination threatens the entire ecological balance, encompassing food safety and the health of aquatic systems. Consequently, developing effective MP removal technologies has emerged as a critical area of research. Here, we summarize the mechanisms and recently reported strategies for removing MPs from aquatic ecosystems. Strategies combining physical and chemical pretreatments with microbial degradation have shown promise in decomposing MPs. Microorganisms such as bacteria, fungi, algae, and specific enzymes are being leveraged in MP remediation efforts. Recent advancements have focused on innovative methods such as membrane bioreactors, synthetic biology, organosilane-based techniques, biofilm-mediated remediation, and nanomaterial-enabled strategies, with nano-enabled technologies demonstrating substantial potential to enhance MP removal efficiency. This review aims to stimulate further innovation in effective MP removal methods, promoting environmental and social well-being.
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Affiliation(s)
- Sameh S. Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Tamer Elsamahy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Rania Al-Tohamy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
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2
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Biao W, Hashim NA, Rabuni MFB, Lide O, Ullah A. Microplastics in aquatic systems: An in-depth review of current and potential water treatment processes. CHEMOSPHERE 2024; 361:142546. [PMID: 38849101 DOI: 10.1016/j.chemosphere.2024.142546] [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: 05/29/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Plastic products, despite their undeniable utility in modern life, pose significant environmental challenges, particularly when it comes to recycling. A crucial concern is the pervasive introduction of microplastics (MPs) into aquatic ecosystems, with deleterious effects on marine organisms. This review presents a detailed examination of the methodologies developed for MPs removal in water treatment systems. Initially, investigating the most common types of MPs in wastewater, subsequently presenting methodologies for their precise identification and quantification in aquatic environments. Instruments such as scanning electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy, Raman spectroscopy, surface-enhanced Raman spectroscopy, and Raman tweezers stand out as powerful tools for studying MPs. The discussion then transitions to the exploration of both existing and emergent techniques for MPs removal in wastewater treatment plants and drinking water treatment plants. This includes a description of the core mechanisms that drive these techniques, with an emphasis on the latest research developments in MPs degradation. Present MPs removal methodologies, ranging from physical separation to chemical and biological adsorption and degradation, offer varied advantages and constraints. Addressing the MPs contamination problem in its entirety remains a significant challenge. In conclusion, the review offers a succinct overview of each technique and forwards recommendations for future research, highlighting the pressing nature of this environmental dilemma.
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Affiliation(s)
- Wang Biao
- Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - N Awanis Hashim
- Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Sustainable Process Engineering Centre (SPEC), Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Mohamad Fairus Bin Rabuni
- Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Sustainable Process Engineering Centre (SPEC), Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Ong Lide
- Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Aubaid Ullah
- Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
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3
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Song M, Park JY. Removal of Microplastics in a Hybrid Treatment Process of Ceramic Microfiltration and Photocatalyst-Mounted PES Spheres with Air Backwashing. MEMBRANES 2024; 14:169. [PMID: 39195421 DOI: 10.3390/membranes14080169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 08/29/2024]
Abstract
Microplastics (MPs), which are defined as plastics with a size of less than 5 mm, cannot be treated completely in wastewater treatment plants (WWTPs) and discharged to a water body because they are too small in size. It has been reported that MPs can have adverse effects on human beings and water ecosystems. There is a need to combine existing drinking water treatment plants (DWTPs) and WWTPs with the traditional treatment process and technology with high removal efficiency of MPs or to develop a new technology to separate MPs from water and wastewater. In this study, the effects of MPs (polyethylene (PE), 125 μm) and organic matter (humic acid) were researched in a hybrid treatment process of ceramic microfiltration (MF) and photocatalyst (TiO2)-mounted polyether sulfone (PES) spheres with air backwashing. The roles of the MF, photooxidation, and adsorption of PES spheres were confirmed in a single MF process (MF), an MF process with UV irradiation (MF+UV), MF and PES sphere adsorption without UV irradiation (MF+PES), and a hybrid process incorporating MF and PES spheres with UV irradiation (MF+PES+UV). The impact of the air backwashing cycle (filtration time, FT) on filtration characteristics and treatment efficiencies in the hybrid process was studied. In the MF process, membrane fouling increased with increasing organic matter (HA, humic acid). The treatment efficiency of MPs increased; however, that of dissolved organic matter (DOM) decreased with increasing HA. As MPs increased, the membrane fouling decreased; however, total filtration volume (VT) remained almost constant. The treatment efficiency of MPs increased a little, and that of DOM showed a dropping trend. In the hybrid process, the membrane fouling was controlled via the adsorption and UV photooxidation of the PES spheres, and the DOM treatment efficiency increased by combining processes from MF to MF+PES+UV. The optimal FT was 10 min at BT 10 s in this hybrid process. The results could be applied to separate MPs effectively in DWTPs/WWTPs.
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Affiliation(s)
- Minjoo Song
- Department of Environmental Sciences & Biotechnology, Hallym University, Chuncheon 24252, Republic of Korea
| | - Jin Yong Park
- Department of Environmental Sciences & Biotechnology, Hallym University, Chuncheon 24252, Republic of Korea
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4
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Singh S, Kapoor S, Singh JP. Synergistic Photocatalysis by α-MoO 3 Nanostructures and SWCNT Nanocomposites for Efficient Cross-Linking and Oxidative Degradation of Polystyrene Nanoplastics. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39049176 DOI: 10.1021/acsami.4c06616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Nanoplastics (NPs) generated from plastic debris weathering pose a significant threat to ecosystems. The ubiquity of plastics driven by their advantageous physical properties, necessitates the development of efficient degradation and removal methods. Polystyrene (PS), a common and hazardous aquatic NP is a long-chain hydrocarbon with alternating phenyl groups. This study investigates the photooxidative degradation of PS NPs under UV light irradiation using synthesized MoO3 nanoflakes, nanobelts, and MoO3/SWCNT nanocomposites. Raman spectroscopy, X-ray diffraction, atomic force microscopy, high-resolution transmission electron microscopy, energy dispersive X-ray, Brunauer-Emmett-Teller, and UV-vis spectroscopy were employed to characterize the photocatalyst. Field emission scanning electron microscopy was used to visualize morphological changes in the spherical PS NPs upon interaction with the photocatalysts. MoO3 nanoflakes acting as a photocatalyst under UV irradiation for 24 h achieved an impressive degradation efficiency exceeding 19%. This treatment significantly reduced the average diameter of PS NPs from 220 to 178 nm. Notably, even higher degradation efficiencies were observed with MoO3 nanobelts and nanocomposites as a complete change in the spherical morphology of PS NPs is observed. Fourier transform infrared spectroscopy elucidated the chemical transformations of PS during degradation. The observed changes in PS NPs structure due to photocatalytic oxidation at different time intervals indicate a promising approach.
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Affiliation(s)
- Shivam Singh
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sakshi Kapoor
- Nanoscale Research Facility, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - J P Singh
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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5
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Rizvi NB, Sarwar A, Waheed S, Iqbal ZF, Imran M, Javaid A, Kim TH, Khan MS. Nano-based remediation strategies for micro and nanoplastic pollution. JOURNAL OF CONTAMINANT HYDROLOGY 2024; 265:104380. [PMID: 38875891 DOI: 10.1016/j.jconhyd.2024.104380] [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: 01/16/2024] [Revised: 05/02/2024] [Accepted: 06/02/2024] [Indexed: 06/16/2024]
Abstract
Due to rapid urbanization, there have been continuous environmental threats from different pollutants, especially from microplastics. Plastic products rapidly proliferate significantly contributing to the occurrence of micro-plastics, which poses a significant environmental risk. These microplastics originated from diverse sources and are characterized by their persistent and widespread occurrence; human health and the entire ecosystem are adversely affected by them. The removal of microplastics not only requires innovative technologies but also efficient materials capable of effectively eliminating them from our environment. The progress made so far has highlighted the advantages of utilizing the dimensional and structural properties of nanomaterials to increase the effectiveness of existing methods for micro-plastic treatment, aiming for a more sustainable approach to their removal. In the current review, we demonstrate a thorough overview of the sources, occurrences, and potential harmful effects of microplastics, followed by a further discussion of promising technologies used for their removal. An in-depth examination of both advantages and a few limitations of all these given technologies, including physical, chemical, and biological approaches, has been discussed. Additionally, the review explores the use of nanomaterials as an effective means to overcome obstacles and improve the efficiency of microplastic elimination methods. n conclusion, this review addresses, current challenges in this field and outlines the future perspectives for further research in this domain.
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Affiliation(s)
- Nayab Batool Rizvi
- Centre for Clinical and Nutritional Chemistry, University of the Punjab, Lahore 54000, Pakistan
| | - Adnan Sarwar
- Centre for Clinical and Nutritional Chemistry, University of the Punjab, Lahore 54000, Pakistan
| | - Saba Waheed
- Centre for Clinical and Nutritional Chemistry, University of the Punjab, Lahore 54000, Pakistan
| | - Zeenat Fatima Iqbal
- Department of Chemistry, University of Engineering and Technology, Lahore-54000, Pakistan
| | - Muhammad Imran
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Lahore 54000, Pakistan.
| | - Ayesha Javaid
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Lahore 54000, Pakistan
| | - Tak H Kim
- School of Environment and Science, Griffith University, 170 Kessels Road, Nathan, QLD, 4111, Australia
| | - Muhammad Shahzeb Khan
- Sulaiman Bin Abdullah Aba Al-Khail Centre for Interdisciplinary Research in Basic Sciences (SA-CIRBS), Faculty of Basic and Applied Sciences, International Islamic University Islamabad, Islamabad, Pakistan.
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6
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Mohamadpour F, Amani AM. Photocatalytic systems: reactions, mechanism, and applications. RSC Adv 2024; 14:20609-20645. [PMID: 38952944 PMCID: PMC11215501 DOI: 10.1039/d4ra03259d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 06/21/2024] [Indexed: 07/03/2024] Open
Abstract
The photocatalytic field revolves around the utilization of photon energy to initiate various chemical reactions using non-adsorbing substrates, through processes such as single electron transfer, energy transfer, or atom transfer. The efficiency of this field depends on the capacity of a light-absorbing metal complex, organic molecule, or substance (commonly referred to as photocatalysts or PCs) to execute these processes. Photoredox techniques utilize photocatalysts, which possess the essential characteristic of functioning as both an oxidizing and a reducing agent upon activation. In addition, it is commonly observed that photocatalysts exhibit optimal performance when irradiated with low-energy light sources, while still retaining their catalytic activity under ambient temperatures. The implementation of photoredox catalysis has resuscitated an array of synthesis realms, including but not limited to radical chemistry and photochemistry, ultimately affording prospects for the development of the reactions. Also, photoredox catalysis is utilized to resolve numerous challenges encountered in medicinal chemistry, as well as natural product synthesis. Moreover, its applications extend across diverse domains encompassing organic chemistry and catalysis. The significance of photoredox catalysts is rooted in their utilization across various fields, including biomedicine, environmental pollution management, and water purification. Of course, recently, research has evaluated photocatalysts in terms of cost, recyclability, and pollution of some photocatalysts and dyes from an environmental point of view. According to these new studies, there is a need for critical studies and reviews on photocatalysts and photocatalytic processes to provide a solution to reduce these limitations. As a future perspective for research on photocatalysts, it is necessary to put the goals of researchers on studies to overcome the limitations of the application and efficiency of photocatalysts to promote their use on a large scale for the development of industrial activities. Given the significant implications of the subject matter, this review seeks to delve into the fundamental tenets of the photocatalyst domain and its associated practical use cases. This review endeavors to demonstrate the prospective of a powerful tool known as photochemical catalysis and elucidate its underlying tenets. Additionally, another goal of this review is to expound upon the various applications of photocatalysts.
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Affiliation(s)
- Farzaneh Mohamadpour
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences Shiraz Iran
| | - Ali Mohammad Amani
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences Shiraz Iran
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7
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Xiao Y, Tian Y, Xu W, Zhu J. Photodegradation of Microplastics through Nanomaterials: Insights into Photocatalysts Modification and Detailed Mechanisms. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2755. [PMID: 38894019 PMCID: PMC11174110 DOI: 10.3390/ma17112755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024]
Abstract
Microplastics (MPs) pose a profound environmental challenge, impacting ecosystems and human health through mechanisms such as bioaccumulation and ecosystem contamination. While traditional water treatment methods can partially remove microplastics, their limitations highlight the need for innovative green approaches like photodegradation to ensure more effective and sustainable removal. This review explores the potential of nanomaterial-enhanced photocatalysts in addressing this issue. Utilizing their unique properties like large surface area and tunable bandgap, nanomaterials significantly improve degradation efficiency. Different strategies for photocatalyst modification to improve photocatalytic performance are thoroughly summarized, with a particular emphasis on element doping and heterojunction construction. Furthermore, this review thoroughly summarizes the possible fundamental mechanisms driving the photodegradation of microplastics facilitated by nanomaterials, with a focus on processes like free radical formation and singlet oxygen oxidation. This review not only synthesizes critical findings from existing studies but also identifies gaps in the current research landscape, suggesting that further development of these photocatalytic techniques could lead to substantial advancements in environmental remediation practices. By delineating these novel approaches and their mechanisms, this work underscores the significant environmental implications and contributes to the ongoing development of sustainable solutions to mitigate microplastic pollution.
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Affiliation(s)
- Yiting Xiao
- Department of Biological Engineering, University of Arkansas, Fayetteville, AR 72701, USA
| | - Yang Tian
- Program of Material Science and Engineering, University of Arkansas, Fayetteville, AR 72701, USA;
| | - Wenbo Xu
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701, USA;
| | - Jun Zhu
- Department of Biological Engineering, University of Arkansas, Fayetteville, AR 72701, USA
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8
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Sharma S, Bhardwaj A, Thakur M, Saini A. Understanding microplastic pollution of marine ecosystem: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:41402-41445. [PMID: 37442935 DOI: 10.1007/s11356-023-28314-1] [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: 11/30/2022] [Accepted: 06/13/2023] [Indexed: 07/15/2023]
Abstract
Microplastics are emerging as prominent pollutants across the globe. Oceans are becoming major sinks for these pollutants, and their presence is widespread in coastal regions, oceanic surface waters, water column, and sediments. Studies have revealed that microplastics cause serious threats to the marine ecosystem as well as human beings. In the past few years, many research efforts have focused on studying different aspects relating to microplastic pollution of the oceans. This review summarizes sources, migration routes, and ill effects of marine microplastic pollution along with various conventional as well as advanced methods for microplastics analysis and control. However, various knowledge gaps in detection and analysis require attention in order to understand the sources and transport of microplastics, which is critical to deploying mitigation strategies at appropriate locations. Advanced removal methods and an integrated approach are necessary, including government policies and stringent regulations to control the release of plastics.
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Affiliation(s)
- Swati Sharma
- Department of Biotechnology, Shoolini Institute of Life Sciences and Business Management, Solan, Himachal Pradesh, India
| | - Aprajita Bhardwaj
- Department of Biotechnology, Shoolini Institute of Life Sciences and Business Management, Solan, Himachal Pradesh, India
| | - Monika Thakur
- Department of Microbiology, Shoolini Institute of Life Sciences and Business Management, Solan, Himachal Pradesh, India
| | - Anita Saini
- Department of Microbiology, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi, Himachal Pradesh, India.
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9
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Zhao J, Miao P, Zhang X, Wang P, Li Z, Wu LZ, Shi R, Zhang T. Photothermal Mineralization of Polyolefin Microplastics via TiO 2 Hierarchical Porous Layer-Based Semiwetting Air-Plastic-Solid Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400681. [PMID: 38555504 DOI: 10.1002/adma.202400681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Photo-mineralization of microplastics under mild conditions has emerged as a promising solution to plastic waste disposal. However, the inadequate contact between oxygen, water-insoluble polyolefin microplastics, and photocatalysts remains a critical issue. In this study, a TiO2 hierarchical porous layer (TiO2-HPL) photocatalyst is presented to establish air-plastic-solid triphase interfaces for the photothermal mineralization of polyolefins. The wettability of the TiO2-HPL-based triphase interface is finely controlled from plastophobic to plastophilic. High-resolution imaging and finite element simulation demonstrate the significance of a semiwetting state in achieving multidirectional oxygen diffusion through the hierarchical pore structure while maintaining sufficient contact between the plastic phase and photocatalysts. For low-density polyethylene, the TiO2-HPL achieves a photothermal mineralization rate of 5.63 mmol g-1 h-1 and a conversion of 26.3% after 20 h of continuous irradiation. Additionally, the triphase photocatalytic system with semiwetting gas-plastic-solid interfaces shows good universality for various polyolefin reagents and products, illustrating its potential in achieving efficient photothermal mineralization of non-degradable microplastics.
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Affiliation(s)
- Jiaqi Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Peng Miao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xuerui Zhang
- Petrochemical Research Institute, China National Petroleum Corporation, Beijing, 112206, China
| | - Pu Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhenhua Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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10
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Zandieh M, Griffiths E, Waldie A, Li S, Honek J, Rezanezhad F, Van Cappellen P, Liu J. Catalytic and biocatalytic degradation of microplastics. EXPLORATION (BEIJING, CHINA) 2024; 4:20230018. [PMID: 38939860 PMCID: PMC11189586 DOI: 10.1002/exp.20230018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/21/2023] [Indexed: 06/29/2024]
Abstract
In recent years, there has been a surge in annual plastic production, which has contributed to growing environmental challenges, particularly in the form of microplastics. Effective management of plastic and microplastic waste has become a critical concern, necessitating innovative strategies to address its impact on ecosystems and human health. In this context, catalytic degradation of microplastics emerges as a pivotal approach that holds significant promise for mitigating the persistent effects of plastic pollution. In this article, we critically explored the current state of catalytic degradation of microplastics and discussed the definition of degradation, characterization methods for degradation products, and the criteria for standard sample preparation. Moreover, the significance and effectiveness of various catalytic entities, including enzymes, transition metal ions (for the Fenton reaction), nanozymes, and microorganisms are summarized. Finally, a few key issues and future perspectives regarding the catalytic degradation of microplastics are proposed.
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Affiliation(s)
- Mohamad Zandieh
- Department of ChemistryUniversity of WaterlooWaterlooOntarioCanada
- Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntarioCanada
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
| | - Erin Griffiths
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
- Ecohydrology Research GroupDepartment of Earth and Environmental SciencesUniversity of WaterlooWaterlooOntarioCanada
| | - Alexander Waldie
- Department of ChemistryUniversity of WaterlooWaterlooOntarioCanada
- Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntarioCanada
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
| | - Shuhuan Li
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
- Ecohydrology Research GroupDepartment of Earth and Environmental SciencesUniversity of WaterlooWaterlooOntarioCanada
| | - John Honek
- Department of ChemistryUniversity of WaterlooWaterlooOntarioCanada
- Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntarioCanada
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
| | - Fereidoun Rezanezhad
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
- Ecohydrology Research GroupDepartment of Earth and Environmental SciencesUniversity of WaterlooWaterlooOntarioCanada
| | - Philippe Van Cappellen
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
- Ecohydrology Research GroupDepartment of Earth and Environmental SciencesUniversity of WaterlooWaterlooOntarioCanada
| | - Juewen Liu
- Department of ChemistryUniversity of WaterlooWaterlooOntarioCanada
- Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntarioCanada
- Water InstituteUniversity of WaterlooWaterlooOntarioCanada
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11
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Li J, Ma HP, Zhao G, Huang G, Sun W, Peng C. Plastic Waste Conversion by Leveraging Renewable Photo/Electro-Catalytic Technologies. CHEMSUSCHEM 2024; 17:e202301352. [PMID: 38226954 DOI: 10.1002/cssc.202301352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/26/2023] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
Plastics have revolutionized our lives; however, the exponential growth of their usage has led to a global crisis. More sustainable strategies are needed to address this dilemma and transform the plastics economy from a linearity to a circular model. Herein, we systematically summarize the recent progress in renewable energy-driven plastic conversion strategies, including photocatalysis, electrocatalysis, and their integration. By introducing the significant works, the design principles, mechanisms, and system regulations, we decipher and compare the various aspects of plastic conversion. These approaches show high reactivity and selectivity under environmentally benign conditions and provide alternative reaction pathways for plastic conversion. Plastic upcycling as a chemical feedstock can yield value-added chemicals and fuels, contributing to the establishment of a sustainable and circular economy. Additionally, several innovations in reaction engineering and system designs are presented. Finally, the challenges and perspectives of sustainable energy-driven plastic conversion technologies are comprehensively discussed.
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Affiliation(s)
- Jianan Li
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 311121, P. R. China
| | - Hong-Peng Ma
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Shaan Xi, 710072, P. R. China
| | - Guoping Zhao
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 311121, P. R. China
| | - Guangfa Huang
- Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou, 311121, P. R. China
| | - Wenbo Sun
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo, 255000, P. R. China
| | - Chong Peng
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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12
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Cui B, Rong H, Tian T, Guo D, Duan L, Nkinahamira F, Ndagijimana P, Yan W, Naidu R. Chemical methods to remove microplastics from wastewater: A review. ENVIRONMENTAL RESEARCH 2024; 249:118416. [PMID: 38316391 DOI: 10.1016/j.envres.2024.118416] [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: 11/14/2023] [Revised: 12/23/2023] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
Microplastics (Mps) have emerged as a pervasive environmental concern, with their presence detected not only in freshwater ecosystems but also in drinking and bottled water sources. While extensive research has centered on understanding the origins, migration patterns, detection techniques, and ecotoxicological impacts of these contaminants, there remains a notable research gap about the strategies for Mps removal. This study reviews existing literature on chemical approaches for mitigating microplastic contamination within wastewater systems, focusing on coagulation precipitation, electrocoagulation, and advanced oxidation methods. Each approach is systematically explored, encompassing their respective mechanisms and operational dynamics. Furthermore, the comparative analysis of these three techniques elucidates their strengths and limitations in the context of MPs removal. By shedding light on the intricate mechanisms underlying these removal methods, this review contributes to the theoretical foundation of microplastic elimination from wastewater and identifies future research trajectories and potential challenges.
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Affiliation(s)
- Baihui Cui
- State Key Laboratory of Biocontrol, School of Ecology, Shenzhen Campus of Sun Yat-Sen University, Gongchang Road, Guangming District, Guangdong, 518107, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Tingting Tian
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Dabin Guo
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Luchun Duan
- Global Centre for Environmental Remediation (GCER), College of Science, Engineering and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (crcCARE), University Drive, Callaghan, NSW, 2308, Australia
| | | | | | - Wangwang Yan
- State Key Laboratory of Biocontrol, School of Ecology, Shenzhen Campus of Sun Yat-Sen University, Gongchang Road, Guangming District, Guangdong, 518107, China.
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), College of Science, Engineering and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (crcCARE), University Drive, Callaghan, NSW, 2308, Australia
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13
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Chinnam B, Dasagiri CS, Araga R. Synthesis and preliminary evaluation of Ag-TiO 2/CNT hybrid nanocomposite for the degradation of polystyrene microplastics under solar irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:32863-32874. [PMID: 38668952 DOI: 10.1007/s11356-024-33438-z] [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: 01/30/2024] [Accepted: 04/19/2024] [Indexed: 05/29/2024]
Abstract
Currently, microplastics (MPs) are considered as emerging aqueous pollutants. However, existing methods for the separation and treatment of MPs from an aquatic environment are limited by their low efficiency. Advanced oxidation processes (AOPs) are novel techniques that employ photo-induced electron/hole pairs to generate active radicals for MP mineralization. Thus, in this study, a photocatalyst, i.e., Ag+ ion-doped TiO2, heterojunctioned with carbon nanotubes (CNT), was synthesized to study the degradation of typical MPs such as polystyrene (PS) under solar irradiation. Effectiveness of the prepared photocatalyst for the PS degradation was estimated through FESEM, FTIR, total organic carbon (TOC) analyzer, and gas chromatography-mass spectroscopy (GC-MS). Quantitatively, 31.7% degradation of PS microbeads was achieved within 48 h. Therefore, this study provides an efficient and cost-effective strategy for the degradation of MPs from the aqueous medium.
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Affiliation(s)
- Bhagyalakshmi Chinnam
- Department of Chemical Engineering, National Institute of Technology Warangal, Warangal, Telangana, India, 506004
| | - Chandra Shekhar Dasagiri
- Department of Chemical Engineering, National Institute of Technology Warangal, Warangal, Telangana, India, 506004
| | - Ramya Araga
- Department of Chemical Engineering, National Institute of Technology Warangal, Warangal, Telangana, India, 506004.
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14
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Surana M, Pattanayak DS, Yadav V, Singh VK, Pal D. An insight decipher on photocatalytic degradation of microplastics: Mechanism, limitations, and future outlook. ENVIRONMENTAL RESEARCH 2024; 247:118268. [PMID: 38244970 DOI: 10.1016/j.envres.2024.118268] [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: 09/27/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 01/22/2024]
Abstract
Plastic material manufacturing and buildup over the past 50 years has significantly increased pollution levels. Microplastics (MPs) and non-biodegradable residual plastic films have become the two most pressing environmental issues among the numerous types of plastic pollution. These tiny plastic flakes enter water systems from a variety of sources, contaminating the water. Since MPs can be consumed by people and aquatic species and eventually make their way into the food chain, their presence in the environment poses a serious concern. Traditional technologies can remove MPs to some extent, but their functional groups, stable covalent bonds, and hydrophobic nature make them difficult to eliminate completely. The urgent need to develop a sustainable solution to the worldwide contamination caused by MPs has led to the exploration of various techniques. Advanced oxidation processes (AOPs) such as photo-catalytic oxidation, photo-degradation, and electrochemical oxidation have been investigated. Among these, photocatalysis stands out as the most promising method for degrading MPs. Photocatalysis is an environmentally friendly process that utilizes light energy to facilitate a chemical reaction, breaking down MPs into carbon dioxide and water-soluble hydrocarbons under aqueous conditions. In photocatalysis, semiconductors act as photocatalysts by absorbing energy from a light source, becoming excited, and generating reactive oxygen species (ROS). These ROS, including hydroxyl radicals (•OH) and superoxide ions ( [Formula: see text] ), play a crucial role in the degradation of MPs. This extensive review provides a detailed exploration of the mechanisms and processes underlying the photocatalytic removal of MPs, emphasizing its potential as an efficient and environmentally friendly approach to address the issue of plastic pollution.
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Affiliation(s)
- Madhu Surana
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492010, Chhattisgarh, India
| | - Dhruti Sundar Pattanayak
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492010, Chhattisgarh, India
| | - Venkteshwar Yadav
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492010, Chhattisgarh, India
| | - V K Singh
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492010, Chhattisgarh, India
| | - Dharm Pal
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492010, Chhattisgarh, India.
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15
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Kumar M, Bhujbal SK, Kohli K, Prajapati R, Sharma BK, Sawarkar AD, Abhishek K, Bolan S, Ghosh P, Kirkham MB, Padhye LP, Pandey A, Vithanage M, Bolan N. A review on value-addition to plastic waste towards achieving a circular economy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171106. [PMID: 38387564 DOI: 10.1016/j.scitotenv.2024.171106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/12/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
Plastic and mixed plastic waste (PW) has received increased worldwide attention owing to its huge rate of production, high persistency in the environment, and unsustainable waste management practices. Therefore, sustainable PW management and upcycling approaches are imperative to achieve the objectives of the United Nations Sustainable Development Goals. Numerous recent studies have shown the application and feasibility of various PW conversion techniques to produce materials with better economic value. Within this framework, the current review provides an in-depth analysis of cutting-edge thermochemical technologies such as pyrolysis, gasification, carbonization, and photocatalysis that can be used to value plastic and mixed PW in order to produce energy and industrial chemicals. Additionally, a thorough examination of the environmental impacts of contemporary PW upcycling techniques and their commercial feasibility through life cycle assessment (LCA) and techno-economical assessment are provided in this review. Finally, this review emphasizes the opportunities and challenges accompanying with existing PW upcycling techniques and deliver recommendations for future research works.
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Affiliation(s)
- Manish Kumar
- Amity Institute of Environmental Sciences, Amity University, Noida, India.
| | - Sachin Krushna Bhujbal
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Kirtika Kohli
- Distillate and Heavy Oil Processing Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India
| | - Ravindra Prajapati
- Prairie Research Institute-Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA
| | - Brajendra K Sharma
- Prairie Research Institute-Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA; United States Department of Agriculture, Agricultural Research Service Eastern Regional Research Center Sustainable Biofuels and Co-Products Research Unit, 600 E. Mermaid Ln., Wyndmoor, PA 19038, USA
| | - Ankush D Sawarkar
- Department of Information Technology, Shri Guru Gobind Singhji Institute of Engineering and Technology (SGGSIET), Nanded, Maharashtra 431 606, India
| | - Kumar Abhishek
- Department of Environment, Forest and Climate Change, Government of Bihar, Patna, India
| | - Shiv Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia
| | - Pooja Ghosh
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India; Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio 70211, Finland
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, USA
| | - Lokesh P Padhye
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India; Kyung Hee University, Kyung Hee Dae Ro 26, Seoul 02447, Republic of Korea; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India; Centre for Energy and Environmental Sustainability, Lucknow 226029, India
| | - Meththika Vithanage
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
| | - Nanthi Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia.
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16
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Zhou T, Song S, Min R, Liu X, Zhang G. Advances in chemical removal and degradation technologies for microplastics in the aquatic environment: A review. MARINE POLLUTION BULLETIN 2024; 201:116202. [PMID: 38484537 DOI: 10.1016/j.marpolbul.2024.116202] [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: 12/21/2023] [Revised: 02/23/2024] [Accepted: 02/24/2024] [Indexed: 04/07/2024]
Abstract
In recent years, global attention has been extensively focused on the water pollution and health risks caused by microplastics(MPs), thereby making the treatment of microplastics a key area of research. Chemical removal and degradation present effective approaches to addressing this issue. Consequently, this review summarizes the latest research advancements in the chemical removal and degradation of microplastics in water, comparing the treatment efficacy and advantages and disadvantages of various removal/degradation techniques. It elucidates the chemical mechanisms underlying the removal/degradation of microplastics and identifies the primary influencing factors during the treatment process. A systematic analysis of the performance of microplastic treatment technologies is conducted, examining the impact of microplastic characteristics, operational conditions, and other parameters on the effectiveness of microplastic treatment.
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Affiliation(s)
- Tianhong Zhou
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Shangjian Song
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Rui Min
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Xin Liu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Guozhen Zhang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China.
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17
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Wang Y, Zhao J, Fu Z, Guan D, Zhang D, Zhang H, Zhang Q, Xie J, Sun Y, Wang D. Innovative overview of the occurrence, aging characteristics, and ecological toxicity of microplastics in environmental media. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123623. [PMID: 38387545 DOI: 10.1016/j.envpol.2024.123623] [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: 11/17/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
Microplastics (MPs), pollutants detected at high frequency in the environment, can be served as carriers of many kinds of pollutants and have typical characteristics of environmental persistence and bioaccumulation. The potential risks of MPs ecological environment and health have been widely concerned by scholars and engineering practitioners. Previous reviews mostly focused on the pollution characteristics and ecological toxicity of MPs, but there were few reviews on MPs analysis methods, aging mechanisms and removal strategies. To address this issue, this review first summarizes the contamination characteristics of MPs in different environmental media, and then focuses on analyzing the detection methods and analyzing the aging mechanisms of MPs, which include physical aging and chemical aging. Further, the ecotoxicity of MPs to different organisms and the associated enhanced removal strategies are outlined. Finally, some unresolved research questions related to MPs are prospected. This review focuses on the ageing and ecotoxic behaviour of MPs and provides some theoretical references for the potential environmental risks of MPs and their deep control.
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Affiliation(s)
- Yuxin Wang
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Jianwei Zhao
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China.
| | - Zhou Fu
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Dezheng Guan
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Dalei Zhang
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Hongying Zhang
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Qi Zhang
- Qingdao Jiebao Ecological Technology Co., Ltd., Qingdao, 266000, PR China
| | - Jingliang Xie
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Yingjie Sun
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
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18
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Zahid H, Afzal N, Arif MM, Zahid M, Nawab S, Qasim MM, Alvi FN, Nazir S, Perveen I, Abbas N, Saleem Y, Mazhar S, Nawaz S, Faridi TA, Awan HMA, Syed Q, Abidi SHI. Microorganism-mediated biodegradation for effective management and/or removal of micro-plastics from the environment: a comprehensive review. Arch Microbiol 2024; 206:198. [PMID: 38558101 DOI: 10.1007/s00203-024-03904-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 04/04/2024]
Abstract
Micro- plastics (MPs) pose significant global threats, requiring an environment-friendly mode of decomposition. Microbial-mediated biodegradation and biodeterioration of micro-plastics (MPs) have been widely known for their cost-effectiveness, and environment-friendly techniques for removing MPs. MPs resistance to various biocidal microbes has also been reported by various studies. The biocidal resistance degree of biodegradability and/or microbiological susceptibility of MPs can be determined by defacement, structural deformation, erosion, degree of plasticizer degradation, metabolization, and/or solubilization of MPs. The degradation of microplastics involves microbial organisms like bacteria, mold, yeast, algae, and associated enzymes. Analytical and microbiological techniques monitor microplastic biodegradation, but no microbial organism can eliminate microplastics. MPs can pose environmental risks to aquatic and human life. Micro-plastic biodegradation involves fragmentation, assimilation, and mineralization, influenced by abiotic and biotic factors. Environmental factors and pre-treatment agents can naturally degrade large polymers or induce bio-fragmentation, which may impact their efficiency. A clear understanding of MPs pollution and the microbial degradation process is crucial for mitigating its effects. The study aimed to identify deteriogenic microorganism species that contribute to the biodegradation of micro-plastics (MPs). This knowledge is crucial for designing novel biodeterioration and biodegradation formulations, both lab-scale and industrial, that exhibit MPs-cidal actions, potentially predicting MPs-free aquatic and atmospheric environments. The study emphasizes the urgent need for global cooperation, research advancements, and public involvement to reduce micro-plastic contamination through policy proposals and improved waste management practices.
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Affiliation(s)
- Hassan Zahid
- Department of Public Health, University of Health Sciences, Lahore, Pakistan
| | - Nimra Afzal
- Faculty of Science and Technology, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Maaz Arif
- Department of Medical Education, University of Health Sciences, Lahore, Pakistan
| | - Mahnoor Zahid
- Department of Biochemistry and Molecular Biology, University of Gujrat, Gujrat, Pakistan
| | - Samia Nawab
- Government Graduate College (W), Township, Lahore, Pakistan
| | | | | | | | - Ishrat Perveen
- Food and Biotechnology Research Centre, Pakistan Council of Scientific and Industrial Research Centre, Lahore, Pakistan.
| | - Naaz Abbas
- Minhaj University Lahore, Lahore, Pakistan
| | - Yasar Saleem
- Food and Biotechnology Research Centre, Pakistan Council of Scientific and Industrial Research Centre, Lahore, Pakistan
| | - Sania Mazhar
- Food and Biotechnology Research Centre, Pakistan Council of Scientific and Industrial Research Centre, Lahore, Pakistan
| | - Shaista Nawaz
- Food and Biotechnology Research Centre, Pakistan Council of Scientific and Industrial Research Centre, Lahore, Pakistan
| | | | | | - Quratulain Syed
- Food and Biotechnology Research Centre, Pakistan Council of Scientific and Industrial Research Centre, Lahore, Pakistan
| | - Syed Hussain Imam Abidi
- Food and Biotechnology Research Centre, Pakistan Council of Scientific and Industrial Research Centre, Lahore, Pakistan
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19
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Jansen MAK, Andrady AL, Bornman JF, Aucamp PJ, Bais AF, Banaszak AT, Barnes PW, Bernhard GH, Bruckman LS, Busquets R, Häder DP, Hanson ML, Heikkilä AM, Hylander S, Lucas RM, Mackenzie R, Madronich S, Neale PJ, Neale RE, Olsen CM, Ossola R, Pandey KK, Petropavlovskikh I, Revell LE, Robinson SA, Robson TM, Rose KC, Solomon KR, Andersen MPS, Sulzberger B, Wallington TJ, Wang QW, Wängberg SÅ, White CC, Young AR, Zepp RG, Zhu L. Plastics in the environment in the context of UV radiation, climate change and the Montreal Protocol: UNEP Environmental Effects Assessment Panel, Update 2023. Photochem Photobiol Sci 2024; 23:629-650. [PMID: 38512633 DOI: 10.1007/s43630-024-00552-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/05/2024] [Indexed: 03/23/2024]
Abstract
This Assessment Update by the Environmental Effects Assessment Panel (EEAP) of the United Nations Environment Programme (UNEP) considers the interactive effects of solar UV radiation, global warming, and other weathering factors on plastics. The Assessment illustrates the significance of solar UV radiation in decreasing the durability of plastic materials, degradation of plastic debris, formation of micro- and nanoplastic particles and accompanying leaching of potential toxic compounds. Micro- and nanoplastics have been found in all ecosystems, the atmosphere, and in humans. While the potential biological risks are not yet well-established, the widespread and increasing occurrence of plastic pollution is reason for continuing research and monitoring. Plastic debris persists after its intended life in soils, water bodies and the atmosphere as well as in living organisms. To counteract accumulation of plastics in the environment, the lifetime of novel plastics or plastic alternatives should better match the functional life of products, with eventual breakdown releasing harmless substances to the environment.
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Affiliation(s)
- Marcel A K Jansen
- School of Biological, Earth and Environmental Sciences, University College, Cork, Ireland.
| | - Anthony L Andrady
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Janet F Bornman
- Food Futures Institute, Murdoch University, Perth, Australia.
| | | | - Alkiviadis F Bais
- Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastazia T Banaszak
- Unidad Académica Sistemas Arrecifales, Universidad Nacional Autónoma de México, Puerto Morelos, Mexico
| | - Paul W Barnes
- Department of Biological Sciences and Environment Program, Loyola University New Orleans, New Orleans, LA, USA
| | | | - Laura S Bruckman
- Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Rosa Busquets
- Chemical and Pharmaceutical Sciences, Kingston University London, Kingston Upon Thames, UK
| | | | - Mark L Hanson
- Department of Environment and Geography, University of Manitoba, Winnipeg, MB, Canada
| | | | - Samuel Hylander
- Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden
| | - Robyn M Lucas
- National Centre for Epidemiology and Population Health, College of Health and Medicine, Australian National University, Canberra, Australia
| | - Roy Mackenzie
- Centro Universitario Cabo de Hornos, Universidad de Magallanes, Puerto Williams, Chile
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems BASE, Santiago, Chile
- Cape Horn International Center CHIC, Puerto Williams, Chile
| | - Sasha Madronich
- UV-B Monitoring and Research Program, Colorado State University, Fort Collins, CO, USA
| | - Patrick J Neale
- Smithsonian Environmental Research Center, Edgewater, MD, USA
| | - Rachel E Neale
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, Australia
- School of Public Health, University of Queensland, Brisbane, Australia
| | - Catherine M Olsen
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Frazer Institute, University of Queensland, Brisbane, Australia
| | - Rachele Ossola
- Department of Chemistry, Colorado State University, Fort Collins, CO, USA
| | | | - Irina Petropavlovskikh
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
- Ozone and Water Vapor Division, NOAA ESRL Global Monitoring Laboratory, Boulder, CO, USA
| | - Laura E Revell
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
| | - Sharon A Robinson
- Securing Antarctica's Environmental Future, University of Wollongong, Wollongong, Australia
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, Australia
| | - T Matthew Robson
- UK National School of Forestry, University of Cumbria, Ambleside Campus, Ambleside, UK
- Organismal & Evolutionary Ecology, Viikki Plant Science Centre, Faculty of Biological & Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Kevin C Rose
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Keith R Solomon
- School of Environmental Sciences, University of Guelph, Guelph, Canada
| | - Mads P Sulbæk Andersen
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, CA, USA
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Barbara Sulzberger
- Retired From Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dubendorf, Switzerland
| | - Timothy J Wallington
- Center for Sustainable Systems, School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
| | - Qing-Wei Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Sten-Åke Wängberg
- Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
| | | | | | - Richard G Zepp
- ORD/CEMM, US Environmental Protection Agency, Athens, GA, USA
| | - Liping Zhu
- State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
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20
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Nohara NML, Ariza-Tarazona MC, Triboni ER, Nohara EL, Villarreal-Chiu JF, Cedillo-González EI. Are you drowned in microplastic pollution? A brief insight on the current knowledge for early career researchers developing novel remediation strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170382. [PMID: 38307272 DOI: 10.1016/j.scitotenv.2024.170382] [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: 12/29/2023] [Accepted: 01/21/2024] [Indexed: 02/04/2024]
Abstract
Microplastics (MPs) composed of different polymers with various shapes, within a vast granulometric distribution (1 μm - 5 mm) and with a wide variety of physicochemical surface and bulk characteristics spiral around the globe, with different atmospheric, oceanic, cryospheric, and terrestrial residence times, while interacting with other pollutants and biota. The challenges of microplastic pollution are related to the complex relationships between the microplastic generation mechanisms (physical, chemical, and biological), their physicochemical properties, their interactions with other pollutants and microorganisms, the changes in their properties with aging, and their small sizes that facilitate their diffusion and transportation between the air, water, land, and biota, thereby promoting their ubiquity. Early career researchers (ERCs) constitute an essential part of the scientific community committed to overcoming the challenges of microplastic pollution with their new ideas and innovative scientific perspectives for the development of remediation technologies. However, because of the enormous amount of scientific information available, it may be difficult for ERCs to determine the complexity of this environmental issue. This mini-review aims to provide a quick and updated overview of the essential insights of microplastic pollution to ERCs to help them acquire the background needed to develop highly innovative physical, chemical, and biological remediation technologies, as well as valorization proposals and environmental education and awareness campaigns. Moreover, the recommendations for the development of holistic microplastic pollution remediation strategies presented here can help ERCs propose technologies considering the environmental, social, and practical dimensions of microplastic pollution while fulfilling the current government policies to manage this plastic waste.
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Affiliation(s)
- Nicoly Milhardo Lourenço Nohara
- Department of Chemical Engineering, School of Engineering of Lorena, University of São Paulo, Estrada Municipal do Campinho, no number, Lorena, Brazil
| | - Maria Camila Ariza-Tarazona
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, Modena 41125, Italy
| | - Eduardo Rezende Triboni
- Department of Chemical Engineering, School of Engineering of Lorena, University of São Paulo, Estrada Municipal do Campinho, no number, Lorena, Brazil
| | - Evandro Luís Nohara
- Department of Mechanical Engineering, University of Taubaté, R. Daniel Daneli, no number, Taubaté, Brazil
| | - Juan Francisco Villarreal-Chiu
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Av. Universidad S/N Ciudad Universitaria, San Nicolás de los Garza 66455, Nuevo León, Mexico; Centro de Investigación en Biotecnología y Nanotecnología (CIByN), Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Parque de Investigación e Innovación Tecnológica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca 66628, Nuevo León, Mexico
| | - Erika Iveth Cedillo-González
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, Modena 41125, Italy; National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giusti, Florence 50121, Italy.
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21
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Quilumbaquin W, Castillo-Cabrera GX, Borrero-González LJ, Mora JR, Valle V, Debut A, Loor-Urgilés LD, Espinoza-Montero PJ. Photoelectrocatalytic degradation of high-density polyethylene microplastics on TiO 2-modified boron-doped diamond photoanode. iScience 2024; 27:109192. [PMID: 38433924 PMCID: PMC10906510 DOI: 10.1016/j.isci.2024.109192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/09/2023] [Accepted: 02/07/2024] [Indexed: 03/05/2024] Open
Abstract
Microplastic (MP) accumulation in the environment is accelerating rapidly, which has led to their effects on both the ecosystem and human life garnering much attention. This study is the first to examine the degradation of high-density polyethylene (HDPE) MPs via photoelectrocatalysis (PEC) using a TiO2-modified boron-doped diamond (BDD/TiO2) photoanode. This study was divided into three stages: (i) preparation of the photoanode through electrophoretic deposition of synthetic TiO2 nanoparticles on a BDD electrode; (ii) characterization of the modified photoanode using electrochemical, structural, and optical techniques; and (iii) degradation of HDPE MPs by electrochemical oxidation and photoelectrocatalysis on bare and modified BDD electrodes under dark and UV light conditions. The results indicate that the PEC technique degraded 89.91 ± 0.08% of HDPE MPs in a 10-h reaction and was more efficient at a lower current density (6.89 mA cm-1) with the BDD/TiO2 photoanode compared to electrochemical oxidation on bare BDD.
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Affiliation(s)
- Wendy Quilumbaquin
- Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Quito 170525, Ecuador
| | | | - Luis J. Borrero-González
- Laboratorio de Óptica Aplicada, Escuela de Ciencias Físicas y Matemática, Pontificia Universidad Católica del Ecuador, Quito 170525, Ecuador
| | - José R. Mora
- Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Quito 170157, Ecuador
| | - Vladimir Valle
- Departamento de Ciencias de Alimentos y Biotecnología, Escuela Politécnica Nacional, Quito 170517, Ecuador
| | - Alexis Debut
- Centro de Nanociencia y Nanotecnología, Universidad de las Fuerzas Armadas ESPE, Sangolquí 170501, Ecuador
| | - Luis D. Loor-Urgilés
- Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Quito 170525, Ecuador
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22
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Sun H, Hu J, Wu Y, Gong H, Zhu N, Yuan H. Leachate from municipal solid waste landfills: A neglected source of microplastics in the environment. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133144. [PMID: 38056251 DOI: 10.1016/j.jhazmat.2023.133144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
Over the past decade or so, microplastics (MPs) have received increasing attention due to their ubiquity and potential risk to the environment. Waste plastics usually end up in landfills. These plastics in landfills undergo physical compression, chemical oxidation, and biological decomposition, breaking down into MPs. As a result, landfill leachate stores large amounts of MPs, which can negatively impact the surrounding soil and water environment. However, not enough attention has been given to the occurrence and removal of MPs in landfill leachate. This lack of knowledge has led to landfills being an underestimated source of microplastics. In order to fill this knowledge gap, this paper collects relevant literature on MPs in landfill leachate from domestic and international sources, systematically summarizes their presence within Asia and Europe, assesses the impacts of landfill leachate on MPs in the adjacent environment, and particularly discusses the possible ecotoxicological effects of MPs in leachate. We found high levels of MPs in the soil and water around informal landfills, and the MPs themselves and the toxic substances they carry can have toxic effects on organisms. In addition, this paper summarizes the potential impact of MPs on the biochemical treatment stage of leachate, finds that the effects of MPs on the biochemical treatment stage and membrane filtration are more significant, and proposes some novel processes for MPs removal from leachate. This analysis contributes to the removal of MPs from leachate. This study is the first comprehensive review of the occurrence, environmental impact, and removal of MPs in leachate from landfills in Asia and Europe. It offers a comprehensive theoretical reference for the field, providing invaluable insights.
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Affiliation(s)
- Haoyu Sun
- Shanghai Engineering Research Center of Solid Waste Treatment and Recovery, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jinwen Hu
- Shanghai Engineering Research Center of Solid Waste Treatment and Recovery, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - You Wu
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Huabo Gong
- Shanghai Engineering Research Center of Solid Waste Treatment and Recovery, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Nanwen Zhu
- Shanghai Engineering Research Center of Solid Waste Treatment and Recovery, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haiping Yuan
- Shanghai Engineering Research Center of Solid Waste Treatment and Recovery, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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23
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Amato P, Fantauzzi M, Sannino F, Ritacco I, Santoriello G, Farnesi Camellone M, Imparato C, Bifulco A, Vitiello G, Caporaso L, Rossi A, Aronne A. Indirect daylight oxidative degradation of polyethylene microplastics by a bio-waste modified TiO 2-based material. JOURNAL OF HAZARDOUS MATERIALS 2024; 463:132907. [PMID: 37939563 DOI: 10.1016/j.jhazmat.2023.132907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/27/2023] [Accepted: 10/30/2023] [Indexed: 11/10/2023]
Abstract
Microplastics are recognized as an emerging critical issue for the environment. Here an innovative chemical approach for the treatment of microplastics is proposed, based on an oxidative process that does not require any direct energy source (irradiation or heat). Linear low-density polyethylene (LLDPE) was selected as target commodity polymer, due to its widespread use, chemical inertness and inefficient recycling. This route is based on a hybrid material coupling titanium oxide with a bio-waste, rosin, mainly constituted by abietic acid, through a simple sol-gel synthesis procedure. The ligand-to-metal charge transfer complexes formed between rosin and Ti4+ allow the generation of reactive oxygen species without UV irradiation for its activation. In agreement with theorical calculations, superoxide radical ions are stabilized at ambient conditions on the surface of the hybrid TiO2. Consequently, an impressive degradation of LLDPE is observed after 1 month exposure in a batch configuration under indirect daylight, as evidenced by the products revealed by gas chromatography-mass spectrometry analysis and by chemical and structural modifications of the polymer surface. In a context of waste exploitation, this innovative and sustainable approach represents a promising cost-effective strategy for the oxidative degradation of microplastics, without producing any toxic by-products.
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Affiliation(s)
- Paola Amato
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, I-80125 Naples, Italy
| | - Marzia Fantauzzi
- Department of Chemical and Geological Sciences, University of Cagliari, Campus of Monserrato, I-09042 Monserrato, Cagliari, Italy
| | - Filomena Sannino
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, I-80055 Portici, Naples, Italy.
| | - Ida Ritacco
- Department of Chemistry and Biology "A. Zambelli", INSTM Research Unit, University of Salerno, I-84084 Fisciano, Salerno, Italy
| | - Giuseppe Santoriello
- Department of Chemistry and Biology "A. Zambelli", INSTM Research Unit, University of Salerno, I-84084 Fisciano, Salerno, Italy
| | - Matteo Farnesi Camellone
- CNR-IOM, Consiglio Nazionale delle Ricerche - Istituto Officina dei Materiali, I-34136 Trieste, Italy
| | - Claudio Imparato
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, I-80125 Naples, Italy
| | - Aurelio Bifulco
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, I-80125 Naples, Italy
| | - Giuseppe Vitiello
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, I-80125 Naples, Italy; CSGI, Center for Colloid and Surface Science, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Florence, Italy
| | - Lucia Caporaso
- Department of Chemistry and Biology "A. Zambelli", INSTM Research Unit, University of Salerno, I-84084 Fisciano, Salerno, Italy.
| | - Antonella Rossi
- Department of Chemical and Geological Sciences, University of Cagliari, Campus of Monserrato, I-09042 Monserrato, Cagliari, Italy.
| | - Antonio Aronne
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, I-80125 Naples, Italy.
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24
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Guo S, Feng D, Li Y, Liu L, Tang J. Innovations in chemical degradation technologies for the removal of micro/nano-plastics in water: A comprehensive review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115979. [PMID: 38244511 DOI: 10.1016/j.ecoenv.2024.115979] [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: 10/15/2023] [Revised: 01/06/2024] [Accepted: 01/11/2024] [Indexed: 01/22/2024]
Abstract
Micro/nanoplastics (M/NPs) in water have raised global concern due to their potential environmental risks. To reestablish a M/NPs free world, enormous attempts have been made toward employing chemical technologies for their removal in water. This review comprehensively summarizes the advances in chemical degradation approaches for M/NPs elimination. It details and discusses promising techniques, including photo-based technologies, Fenton-based reaction, electrochemical oxidation, and novel micro/nanomotors approaches. Subsequently, critical influence factors, such as properties of M/NPs and operating factors, are analyzed in this review specifically. Finally, it concludes by addressing the current challenges and future perspectives in chemical degradation. This review will provide guidance for scientists to further explore novel strategies and develop feasible chemical methods for the improved control and remediation of M/NPs in the future.
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Affiliation(s)
- Saisai Guo
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Di Feng
- Shandong Facility Horticulture Bioengineering Research Center/Weifang University of Science and Technology, Weifang 262700, Shandong, China
| | - Yu Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Linan Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Jingchun Tang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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25
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Janani R, Bhuvana S, Geethalakshmi V, Jeyachitra R, Sathishkumar K, Balu R, Ayyamperumal R. Micro and nano plastics in food: A review on the strategies for identification, isolation, and mitigation through photocatalysis, and health risk assessment. ENVIRONMENTAL RESEARCH 2024; 241:117666. [PMID: 37984787 DOI: 10.1016/j.envres.2023.117666] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
Over the past few years, it has become increasingly evident that microplastic pollutant heavily contaminates water sources, posing a potential threat to both human and wildlife. These plastic pollutants do not get degraded efficiently by natural processes and the existing traditional treatment methods are incapable of fully eradicating them. In this regard, degradation of microplastic contaminants through photocatalytic methods has emerged as a powerful technique. Unfortunately, only a limited number of investigations have been reported in the field of photocatalytic degradation of microplastics. This comprehensive assessment focuses on the detailed analysis of the latest cutting edge engineered technologies aimed at efficiently separating, identifying microplastic contaminants present in food samples and degrading them through photocatalysis. Moreover, detailed information on various instrumental techniques that can be adopted to analyze the isolated micro sized plastic particles has been discussed. The assessment and degradation of these micro contaminants through photocatalytic methods is still in juvenile stage and there are lot of rooms to be explored. The need for profound contemplation on methods to degrade them through photocatalytic approaches as well as their possible health risks to humans motivated us to bring out this review.
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Affiliation(s)
- R Janani
- Department of Physics, KIT-Kalaignarkarunanidhi Institute of Technology, Coimbatore, 641402, Tamil Nadu, India.
| | - S Bhuvana
- Department of Physics, Dr. N.G.P. Institute of Technology, Coimbatore, 641048, Tamil Nadu, India
| | - V Geethalakshmi
- Department of Chemistry, KIT-Kalaignarkarunanidhi Institute of Technology, Coimbatore, 641402, Tamil Nadu, India
| | - R Jeyachitra
- Department of Physics, KIT-Kalaignarkarunanidhi Institute of Technology, Coimbatore, 641402, Tamil Nadu, India
| | - Kuppusamy Sathishkumar
- Rhizosphere Biology Laboratory, Department of Microbiology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620 024, India
| | - Ranjith Balu
- Department of Materials Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai, Tamil Nadu, 602105, India
| | - Ramamoorthy Ayyamperumal
- Key Laboratory of Western China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China
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26
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Zhang Z, Zou S, Li P. Aging of plastics in aquatic environments: Pathways, environmental behavior, ecological impacts, analyses and quantifications. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122926. [PMID: 37963513 DOI: 10.1016/j.envpol.2023.122926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/30/2023] [Accepted: 11/10/2023] [Indexed: 11/16/2023]
Abstract
The ubiquity of plastics in our environment has brought about pressing concerns, with their aging processes, photo-oxidation, mechanical abrasion, and biodegradation, being at the forefront. Microplastics (MPs), whether originating from plastic degradation or direct anthropogenic sources, further complicate this landscape. This review delves into the intricate aging dynamics of plastics in aquatic environments under various influential factors. We discuss the physicochemical changes that occur in aged plastics and the release of oxidation products during their degradation. Particular attention is given to their evolving environmental interactions and the resulting ecotoxicological implications. A rigorous evaluation is also conducted for methodologies in the analysis and quantification of plastics aging, identifying their merits and limitations and suggesting potential avenues for future research. This comprehensive review is able to illuminate the complexities of plastics aging, charting a path for future research and aiding in the formulation of informed policy decisions.
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Affiliation(s)
- Zekun Zhang
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China
| | - Shichun Zou
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China
| | - Pu Li
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China.
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27
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Pimsawat N, Theerakulpisut S, Kamwilaisak K. Tailoring visible-light active TiO 2/cellulose nanocomposites with controlled crystalline structure for enhanced photocatalytic performance. Sci Rep 2024; 14:101. [PMID: 38168572 PMCID: PMC10762182 DOI: 10.1038/s41598-023-50749-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/24/2023] [Indexed: 01/05/2024] Open
Abstract
This work involves a green and simple synthesis of TiO2 nanoparticles on cellulose under mild conditions without the need for calcination via hydrolysis of titanium oxysulfate (TiOSO4). The synthesis conditions, such as sulfuric acid concentration (0-10% wt), temperature (70-90 ℃), and time (4-8 h), focused on precisely controlling the structure of TiO2 to enhance its photocatalytic effectiveness under visible light. At a lower 2.5 wt% sulfuric acid concentration, pure anatase was formed on the cellulose, while an increase in the range of 5.0-7.5 wt% sulfuric acid concentration yielded a rutile phase, resulting in a mixed phase of anatase and rutile on the cellulose. The pure rutile phase was found at a low temperature (70 ℃), while increased temperature led to the formation of the anatase phase. These results confirmed that the formation of crystalline TiO2 phase on the cellulose depended on sulfuric acid concentration and temperature for hydrolysis. Additionally, the photocatalytic properties of the obtained materials were evaluated by degradationvisible of Rhodamine B (RhB) under UV and visible light. The findings revealed that the mixed phase (anatase/rutile) of TiO2 on the cellulose demonstrated a superior photocatalytic efficiency (99.2%) compared to pure anatase (85.75%) and rutile (75.08%) when exposed to visible light.
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Affiliation(s)
- Nutsupa Pimsawat
- Department of Chemical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Somnuk Theerakulpisut
- Energy Management and Conservation Office, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Khanita Kamwilaisak
- Department of Chemical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand.
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28
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Zhuo M, Chen Z, Liu X, Wei W, Shen Y, Ni BJ. A broad horizon for sustainable catalytic oxidation of microplastics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122835. [PMID: 37931676 DOI: 10.1016/j.envpol.2023.122835] [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: 03/31/2023] [Revised: 10/10/2023] [Accepted: 10/29/2023] [Indexed: 11/08/2023]
Abstract
Microplastics (MPs) have attracted tremendous attention due to their widespread appearance in the environment and biota, and their adverse effects on organisms. Since plastics are substantially produced to meet human needs, primary and secondary MPs are extensively trapped in wastewater treatment plants, freshwater, drinking water, ocean, air, and soil. The serious MPs pollution calls for efficient treatment strategies Herein, we discuss three catalytic processes (photocatalysis, electrocatalysis, and biocatalysis) for the sustainable management of MPs, and the relevant catalytic mechanisms are clarified. For photocatalysis, three categories (organic, inorganic, hybrid) of photocatalysts are listed, with degradation efficiency of 23%-100%. Next, relative impact factors on photocatalysis, such as characteristics of MPs and photocatalysts, are discussed. Then, some promising electrocatalysts for the degradation/conversion of (micro)plastics and standard electrolyzer designs are briefly introduced. This electrocatalytic method has achieved over 77% of Faradaic efficiency. Next, potential organisms with abundant biocatalysts for degrading different types of MPs are reviewed. Advances in three bioremediation techniques including biositimulation, bioaugmentation, and biosurfactant are outlined. Lastly, perspectives are put forward to promote scientific development in solving environmental issues on MPs pollution in broad fields. This paper provides insights into the development of next-generation techniques for MPs pollution management in a sustainable manner.
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Affiliation(s)
- Maoshui Zhuo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Zhijie Chen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Xiaoqing Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia
| | - Yansong Shen
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW, 2007, Australia; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
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29
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Wang X, Dai Y, Li Y, Yin L. Application of advanced oxidation processes for the removal of micro/nanoplastics from water: A review. CHEMOSPHERE 2024; 346:140636. [PMID: 37949189 DOI: 10.1016/j.chemosphere.2023.140636] [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: 09/08/2023] [Revised: 11/03/2023] [Accepted: 11/05/2023] [Indexed: 11/12/2023]
Abstract
Micro/nanoplastics (MNPs) have been increasingly found in environments, food, and organisms, arousing wide public concerns. MNPs may enter food chains through water, posing a threat to human health. Therefore, efficient and environmentally friendly technologies are needed to remove MNPs from contaminated aqueous environments. Advanced oxidation processes (AOPs) produce a vast amount of active species, such as hydroxyl radicals (·OH), known for their strong oxidation capacity. As a result, an increasing number of researchers have focused on using AOPs to decompose and remove MNPs from water. This review summarizes the progress in researches on the removal of MNPs from water by AOPs, including ultraviolet photolysis, ozone oxidation, photocatalysis, Fenton oxidation, electrocatalysis, persulfate oxidation, and plasma oxidation, etc. The removal efficiencies of these AOPs for MNPs in water and the influencing factors are comprehensively analyzed, meanwhile, the oxidation mechanisms and reaction pathways are also discussed in detail. Most AOPs can achieve the degradation of MNPs, mainly manifest as the decrease of particle size and the increase of mass loss, but the mineralization rate is low, thus requiring further optimization for improved performance. Investigating various AOPs is crucial for achieving the complete decomposition of MNPs in water. AOPs will undoubtedly play a vital role in the future for the removal of MNPs from water.
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Affiliation(s)
- Xiaojie Wang
- School of Water Resources and Environment, Beijing Key Laboratory of Water Resources & Environmental Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China.
| | - Yunrong Dai
- School of Water Resources and Environment, Beijing Key Laboratory of Water Resources & Environmental Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China.
| | - Yang Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.
| | - Lifeng Yin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.
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30
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Le VG, Nguyen MK, Nguyen HL, Lin C, Hadi M, Hung NTQ, Hoang HG, Nguyen KN, Tran HT, Hou D, Zhang T, Bolan NS. A comprehensive review of micro- and nano-plastics in the atmosphere: Occurrence, fate, toxicity, and strategies for risk reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166649. [PMID: 37660815 DOI: 10.1016/j.scitotenv.2023.166649] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/11/2023] [Accepted: 08/26/2023] [Indexed: 09/05/2023]
Abstract
Micro- and nano-plastics (MNPs) have received considerable attention over the past 10 years due to their environmental prevalence and potential toxic effects. With the increase in global plastic production and disposal, MNP pollution has become a topic of emerging concern. In this review, we describe MNPs in the atmospheric environment, and potential toxicological effects of exposure to MNPs. Studies have reported the occurrence of MNPs in outdoor and indoor air at concentrations ranging from 0.0065 items m-3 to 1583 items m-3. Findings have identified plastic fragments, fibers, and films in sizes predominantly <1000 μm with polyamide (PA), polyester (PES), polyethylene terephthalate (PET), polypropylene (PP), rayon, polyethylene (PE), polystyrene (PS), polyvinyl chloride (PVC), polyacrylonitrile (PAN), and ethyl vinyl acetate (EVA) as the major compounds. Exposure through indoor air and dust is an important pathway for humans. Airborne MNPs pose health risks to plants, animals, and humans. Atmospheric MNPs can enter organism bodies via inhalation and subsequent deposition in the lungs, which triggers inflammation and other adverse health effects. MNPs could be eliminated through source reduction, policy/regulation, environmental awareness and education, biodegradable materials, bioremediation, and efficient air-filtration systems. To achieve a sustainable society, it is crucial to implement effective strategies for reducing the usage of single-use plastics (SUPs). Further, governments play a pivotal role in addressing the pressing issue of MNPs pollution and must establish viable solutions to tackle this significant challenge.
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Affiliation(s)
- Van-Giang Le
- Central Institute for Natural Resources and Environmental Studies, Vietnam National University (CRES-VNU), Hanoi, 111000, Viet Nam
| | - Minh-Ky Nguyen
- Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Mohammed Hadi
- Department of Ocean Operations and Civil Engineering, Norwegian University of Science and Technology, Norway
| | - Nguyen Tri Quang Hung
- Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam
| | - Hong-Giang Hoang
- Faculty of Medicine, Dong Nai Technology University, Bien Hoa, Dong Nai 810000, Viet Nam
| | - Khoi Nghia Nguyen
- Department of Soil Science, College of Agriculture, Can Tho University, Can Tho City 270000, Viet Nam
| | - Huu-Tuan Tran
- Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City 700000, Viet Nam; Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City 700000, Viet Nam.
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Tao Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Nanthi S Bolan
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia
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31
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Chai C, Liang H, Yao R, Wang F, Song N, Wu J, Li Y. Photocatalytic degradation of polyethylene and polystyrene microplastics by α-Fe 2O 3/g-C 3N 4. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:121702-121712. [PMID: 37953423 DOI: 10.1007/s11356-023-31000-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
This study investigated the photodegradation of microplastics (MPs) by α-Fe2O3/g-C3N4. The effects of α-Fe2O3/g-C3N4 on MPs' surface were investigated through various techniques. With the addition of α-Fe2O3/g-C3N4 and under visible light irradiation, cracks and folds were observed on the MP films and particles. Compared to the treatment without photocatalyst addition, the mass loss of MPs increased with irradiation time when α-Fe2O3/g-C3N4 was added. Specifically, polystyrene films and particles in water showed 9.94% and 7.81% increased mass loss, respectively. The degradation of MPs using α-Fe2O3/g-C3N4 demonstrated the behavior consistent with the pseudo-first-order kinetic model. The presence of α-Fe2O3/g-C3N4 led to an increase in surface oxygen-containing functional groups and crystallinity while decreasing the average molecular weight of MPs. After 30 days of irradiation, the characteristic tensile bands of MPs with α-Fe2O3/g-C3N4 significantly increased, and the detection of carboxyl bands indicated the formation of carboxylic acid, ketones, and lactones as degradation products.
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Affiliation(s)
- Chao Chai
- School of Resources and Environment, Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao, 266109, China.
| | - Hao Liang
- School of Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Ruike Yao
- School of Resources and Environment, Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Fangli Wang
- School of Resources and Environment, Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Ningning Song
- School of Resources and Environment, Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Juan Wu
- School of Resources and Environment, Qingdao Engineering Research Center for Rural Environment, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yan Li
- Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
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Oliva J, Valle-Garcia LS, Garces L, Oliva AI, Valadez-Renteria E, Hernandez-Bustos DA, Campos-Amador JJ, Gomez-Solis C. Using NIR irradiation and magnetic bismuth ferrite microparticles to accelerate the removal of polystyrene microparticles from the drinking water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118784. [PMID: 37611517 DOI: 10.1016/j.jenvman.2023.118784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/28/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023]
Abstract
Magnetic bismuth ferrite (BiFO) microparticles were employed for the first time for the removal of polystyrene (PS) nano/microplastics from the drinking water. BiFO is formed by porous agglomerates with sizes of 5-11 μm, while the PS nano/microparticles have sizes in the range of 70-11000 nm. X-ray diffraction studies demonstrated that the BiFO microparticles are composed of BiFeO3/Bi25FeO40 (the content of Bi25FeO40 is ≈ 8.6%). Drinking water was contaminated with PS nano/microparticles (1 g L-1) and BiFO microparticles were also added to the contaminated water. Later, the mixture of PS-particles + BiFO was irradiated with NIR light (980 nm). Consequently, PS nano/microparticles melted on the BiFO microparticles due to the excessive heating on their surface. At the same time, the NIR (near infrared) light generated oxidizing agents (∙OH and h+), which degraded the by-products formed during the photocatalytic degradation of PS nano/microparticles. Subsequently, the NIR irradiation was stopped, and a Neodymium magnet was utilized to separate the BiFO microparticles from the water. This last procedure also permitted the removal of PS nano/microparticles by physical adsorption. Zeta potential measurements demonstrated that the BiFO surface was positively charged, allowing the removal of the negatively charged PS nano/microparticles by electrostatic attraction. The combination of the photocatalytic process and the physical adsorption permitted a complete removal of PS nano/microparticles after only 90 min as well as a high mineralization of by-products (≈95.5% as confirmed by the total organic carbon measurements). We estimate that ≈23.6% of the PS nano/microparticles were eliminated by photocatalysis and the rest of PS particles (≈76.4%) by physical adsorption. An outstanding adsorption capacity of 195.5 mg g-1 was obtained after the magnetic separation of the BiFO microparticles from the water. Hence, the results of this research demonstrated that using photocatalysis + physical-adsorption is a feasible strategy to quickly remove microplastic contaminants from the water.
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Affiliation(s)
- J Oliva
- CONAHCYT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - L S Valle-Garcia
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico
| | - L Garces
- CONAHCYT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - A I Oliva
- Cinvestav IPN, Unidad Mérida, Depto. de Física Aplicada, A.P. 73-Cordemex, 97310, Mérida, Yucatán, 97310, Mexico
| | - E Valadez-Renteria
- CONAHCYT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - D A Hernandez-Bustos
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico
| | - J J Campos-Amador
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico
| | - C Gomez-Solis
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León 37150, Mexico.
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He Y, Rehman AU, Xu M, Not CA, Ng AM, Djurišić AB. Photocatalytic degradation of different types of microplastics by TiO x/ZnO tetrapod photocatalysts. Heliyon 2023; 9:e22562. [PMID: 38034782 PMCID: PMC10687295 DOI: 10.1016/j.heliyon.2023.e22562] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023] Open
Abstract
We investigated the use of titania coated ZnO tetrapods for photocatalytic degradation of two common types of microplastics, namely polyethylene (PE) microparticles and polyester (PES) microfibers. We found that the plastics morphology affects the rate of degradation, and that the use of electron scavengers is needed to maintain the reactivity of the photocatalysts over a prolonged period of time. Complete mass loss of PE and PES is achieved under UV illumination for 480 h and 624 h, respectively. In addition to pristine microplastics, the degradation of environmental microplastics sample (consisting primarily of polypropylene) was also demonstrated, though in this case longer degradation time (∼816 h) was needed to achieve complete mass loss of the samples.
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Affiliation(s)
- Yanling He
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Atta Ur Rehman
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Muxian Xu
- Department of Physics & Core Research Facilities, Southern University of Science and Technology, Shenzhen, 518055, China
- Department of Physics, Boston College, Chestnut Hill, MA, USA
| | - Christelle A. Not
- Dept. of Earth Science, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Alan M.C. Ng
- Department of Physics & Core Research Facilities, Southern University of Science and Technology, Shenzhen, 518055, China
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Bacha AUR, Nabi I, Chen Y, Li Z, Iqbal A, Liu W, Afridi MN, Arifeen A, Jin W, Yang L. Environmental application of perovskite material for organic pollutant-enriched wastewater treatment. Coord Chem Rev 2023; 495:215378. [DOI: 10.1016/j.ccr.2023.215378] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
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Liu Z, Bacha AUR, Yang L. Control strategies for microplastic pollution in groundwater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 335:122323. [PMID: 37544400 DOI: 10.1016/j.envpol.2023.122323] [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: 06/23/2023] [Revised: 07/21/2023] [Accepted: 08/04/2023] [Indexed: 08/08/2023]
Abstract
Groundwater is the primary source of water that occurs below the earth's surface. However, the advancement in technology and the increasing population, which lead to the discharge of contaminants such as microplastics (MPs), have an adverse impact on the quality of groundwater. MPs are ubiquitous pollutants that are widely found throughout the world. The maximum abundance of MPs is 4 items/L and 15.2 items/L in groundwater at the specific location of China and USA. Various factors can affect the migration of MPs from soil to groundwater. The occurrence of MPs in water causes serious health issues. Therefore, taking appropriate strategies to control MP contamination in groundwater is urgent and important. This review summarizes the current literature on the migration process of MPs from soil to groundwater along with possible methods for the remediation of MP-polluted groundwater. The main objective of the review is to summarize the technical parameters, process, mechanism, and characteristics of various remediation methods and to analyze strategies for controlling MP pollution in groundwater, providing a reference for future research. Possible control strategies for MP pollution in groundwater include two aspects: i) prevention of MPs from entering groundwater; ii) remediation of polluted groundwater with MPs (ectopic remediation and in-situ remediation). Formulating legislative measures, strengthening public awareness and producing more environment-friendly alternatives can be helpful to reduce the production of MPs from the source. Manage plastic waste reasonably is also a good strategy and the most important part of the management is recycling. The shortcomings of the current study and the direction of future research are also highlighted in the review.
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Affiliation(s)
- Zhongchuang Liu
- Green Intelligence Environmental School, Yangtze Normal University, No. 16, Juxian Avenue, Fuling District, Chongqing, China; Chongqing Multiple-source Technology Engineering Research Center for Ecological Environment Monitoring, Yangtze Normal University, No. 16, Juxian Avenue, Fuling District, Chongqing, China.
| | - Aziz-Ur-Rahim Bacha
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
| | - Lei Yang
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
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Ali I, Tan X, Xie Y, Peng C, Li J, Naz I, Duan Z, Wan P, Huang J, Liang J, Rui Z, Ruan Y. Recent innovations in microplastics and nanoplastics removal by coagulation technique: Implementations, knowledge gaps and prospects. WATER RESEARCH 2023; 245:120617. [PMID: 37738942 DOI: 10.1016/j.watres.2023.120617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 08/03/2023] [Accepted: 09/09/2023] [Indexed: 09/24/2023]
Abstract
Recently, microplastics (MPs) and nanoplastics (NPs) contamination is a worldwide problem owing to the immense usage of plastic commodities. Thus, the environmental risks by MPs and NPs demand the application of innovative, efficient, and sustainable technologies to control the pollution of plastic particles. Regarding this, numerous technologies, including adsorption, coagulation, filtration, bioremediation, chemical precipitation, and photocatalysis, have been engaged to eradicate MPs and NPs from contaminated waters. However, the coagulation technique is getting much attention owing to its simplicity, higher removal performance, low carbon footprint, and low operational and maintenance cost. Therefore, this paper has been designed to critically summarize the recent innovations on the application of coagulation process to eradicate MPs and NPs from both synthetic and real sewage. More importantly, the effect of pertinent factors, including characteristics of coagulants, MPs/NPs, and environmental medium on the elimination performances and mechanisms of MPs/NPs have been critically investigated. Further, the potential of coagulation technology in eliminating MPs and NPs from real sewage has been critically elucidated for the first time, for better execution of this technique at commercial levels. Finally, this critical review also presents current research gaps and future outlooks for the improvement of coagulation process for eradicating MPs and NPs from water and real sewage. Overall, the current review will offer valuable knowledge to scientists in selecting a suitable technique for controlling plastic pollution.
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Affiliation(s)
- Imran Ali
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Xiao Tan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; Anhui Province Agricultural Waste Fertilizer Utilization and Cultivated Land Quality Improvement Engineering Research Center, Chuzhou 233100, China.
| | - Yue Xie
- Anhui Province Agricultural Waste Fertilizer Utilization and Cultivated Land Quality Improvement Engineering Research Center, Chuzhou 233100, China
| | - Changsheng Peng
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; School of Environment and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China
| | - Juying Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Iffat Naz
- Department of Biology, Deanship of Educational Services, Qassim University, Buraidah 51452, Saudi Arabia
| | - Zhipeng Duan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Peng Wan
- Shenzhen Water Planning & Design Institute Co., Ltd., Shenzhen 518001, China; Guangdong Provincial Engineering and Technology Research Center for Water Affairs Big Data and Water Ecology, Shenzhen 518001, China
| | - Jiang Huang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Jia Liang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Zhu Rui
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Yinlan Ruan
- Institute for Photonics and Advanced Sensing, The University of Adelaide, SA 5005, Australia
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Chattopadhyay P, Ariza-Tarazona MC, Cedillo-González EI, Siligardi C, Simmchen J. Combining photocatalytic collection and degradation of microplastics using self-asymmetric Pac-Man TiO 2. NANOSCALE 2023; 15:14774-14781. [PMID: 37465854 DOI: 10.1039/d3nr01512b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Microplastics are a significant environmental threat and the lack of efficient removal techniques further amplifies this crisis. Photocatalytic semiconducting nanoparticles have the potential to degrade micropollutants, among them microplastics. The hydrodynamic effects leading to the propulsion of micromotors can lead to the accumulation of microplastics in close vicinity of the micromotor. Incorporating these different properties into a single photocatalytic micromotor (self-propulsion, phoretic assembly of passive colloids and photocatalytic oxidation of contaminants), we achieve a highly scalable, inherently-asymmetric Pac-Man TiO2 micromotor with the ability to actively collect and degrade microplastics. The target microplastics are homogeneous polystyrene microspheres (PS) to facilitate the optical degradation measurements. We cross-correlate the degradation with catalytic activity studies and critically evaluate the timescales required for all involved processes.
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Affiliation(s)
| | - Maria Camila Ariza-Tarazona
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, 41125 Modena, Italy
| | - Erika Iveth Cedillo-González
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, 41125 Modena, Italy
| | - Cristina Siligardi
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via P. Vivarelli 10/1, 41125 Modena, Italy
| | - Juliane Simmchen
- Chair of Physical Chemistry, TU Dresden, Zellescher Weg 19, Dresden, Germany.
- Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1BX, UK
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38
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Xiang P, Zhang Y, Zhang T, Wu Q, Zhao C, Li Q. A novel bacterial combination for efficient degradation of polystyrene microplastics. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131856. [PMID: 37331064 DOI: 10.1016/j.jhazmat.2023.131856] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/20/2023]
Abstract
This study aimed to investigate the combined decomposition of polystyrene (PS) microplastics using three bacterial cultures: Stenotrophomonas maltophilia, Bacillus velezensis, and Acinetobacter radioresistens. The ability of all three strains to grow on medium containing PS (Mn 90,000 Da, Mw 241,200 Da) microplastics as the sole carbon source was examined. After 60 days of A. radioresistens treatment, the maximum weight loss of the PS microplastics was found to be 16.7 ± 0.6% (half-life 251.1 d). After 60 days of treatment with S. maltophilia and B. velezensis, the maximum weight loss of PS microplastics was 43.5 ± 0.8% (half-life 74.9 d). After 60 days of treatment with S. maltophilia, B. velezensis, and A. radioresistens, the weight loss of the PS microplastics was 17.0 ± 0.2% (half-life 224.2 d). The S. maltophilia and B. velezensis treatment showed a more significant degradation effect after 60 days. This result was attributed to interspecific assistance and interspecific competition. Biodegradation of PS microplastics was confirmed using scanning electron microscopy, water contact angle, high-temperature gel chromatography, Fourier transform infrared spectroscopy and thermogravimetric analysis. This study is the first to explore the degradation ability of different bacterial combinations on PS microplastics, providing a reference for future research on the biodegradation technology of mixed bacteria.
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Affiliation(s)
- Peng Xiang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Yunfeng Zhang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Ting Zhang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China; School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China
| | - Qian Wu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Changsong Zhao
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China.
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China.
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Kim JY, Youn DH. Nanomaterials for Advanced Photocatalytic Plastic Conversion. Molecules 2023; 28:6502. [PMID: 37764278 PMCID: PMC10536819 DOI: 10.3390/molecules28186502] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/23/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
As the disposal of waste plastic emerges as a societal problem, photocatalytic waste plastic conversion is attracting significant attention. Ultimately, for a sustainable future, the development of an eco-friendly plastic conversion technology is essential for breaking away from the current plastic use environment. Compared to conventional methods, photocatalysis can be a more environmentally friendly option for waste plastic reprocessing because it uses sunlight as an energy source under ambient temperature and pressure. In addition to this, waste plastics can be upcycled (i.e., converted into useful chemicals or fuels) to enhance their original value via photocatalytic methods. Among various strategies for improving the efficiency of the photocatalytic method, nanomaterials have played a pivotal role in suppressing charge recombination. Hence, in recent years, attempts have been made to introduce nanomaterials/nanostructures into photocatalytic plastic conversion on the basis of advances in material-based studies using simple photocatalysts. In line with this trend, the present review examines the nanomaterials/nanostructures that have been recently developed for photocatalytic plastic conversion and discusses the direction of future development.
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Affiliation(s)
- Jae Young Kim
- Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Duck Hyun Youn
- Department of Chemical Engineering, Department of Integrative Engineering for Hydrogen Safety, Kangwon National University, Chuncheon 24341, Republic of Korea
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He X, Li Z, Yao J, Dong K, Li X, Hu L, Sun S, Cai Z, Zheng D, Luo Y, Ying B, Hamdy MS, Xie L, Liu Q, Sun X. High-efficiency electrocatalytic nitrite reduction toward ammonia synthesis on CoP@TiO 2 nanoribbon array. iScience 2023; 26:107100. [PMID: 37426356 PMCID: PMC10329173 DOI: 10.1016/j.isci.2023.107100] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/20/2023] [Accepted: 06/08/2023] [Indexed: 07/11/2023] Open
Abstract
Electrochemical reduction of nitrite (NO2-) can satisfy the necessity for NO2- contaminant removal and deliver a sustainable pathway for ammonia (NH3) generation. Its practical application yet requires highly efficient electrocatalysts to boost NH3 yield and Faradaic efficiency (FE). In this study, CoP nanoparticle-decorated TiO2 nanoribbon array on Ti plate (CoP@TiO2/TP) is verified as a high-efficiency electrocatalyst for the selective reduction of NO2- to NH3. When measured in 0.1 M NaOH with NO2-, the freestanding CoP@TiO2/TP electrode delivers a large NH3 yield of 849.57 μmol h-1 cm-2 and a high FE of 97.01% with good stability. Remarkably, the subsequently fabricated Zn-NO2- battery achieves a high power density of 1.24 mW cm-2 while delivering a NH3 yield of 714.40 μg h-1 cm-2.
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Affiliation(s)
- Xun He
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan 610106, China
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Zixiao Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Jie Yao
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Kai Dong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Xiuhong Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Long Hu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Shengjun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Zhengwei Cai
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Dongdong Zheng
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Yongsong Luo
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Binwu Ying
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Mohamed S. Hamdy
- Catalysis Research Group (CRG), Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, 61413 Abha, Saudi Arabia
| | - Lisi Xie
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan 610106, China
| | - Qian Liu
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan 610106, China
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
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Quang HHP, Dinh DA, Dutta V, Chauhan A, Lahiri SK, Gopalakrishnan C, Radhakrishnan A, Batoo KM, Thi LAP. Current approaches, and challenges on identification, remediation and potential risks of emerging plastic contaminants: A review. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023:104193. [PMID: 37348772 DOI: 10.1016/j.etap.2023.104193] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/05/2023] [Accepted: 06/19/2023] [Indexed: 06/24/2023]
Abstract
Plastics are widely employed in modern civilization because of their durability, mold ability, and light weight. In the recent decade, micro/nanoplastics research has steadily increased, highlighting its relevance. However, contaminating micro/nanoplastics in marine environments, terrestrial ecosystems, and biological organisms is considered a severe threat to the environmental system. Geographical distribution, migration patterns, etymologies of formation, and ecological ramifications of absorption are just a few topics covered in the scientific literature on environmental issues. Degradable solutions from material science and chemistry are needed to address the micro/nanoplastics problem, primarily to reduce the production of these pollutants and their potential effects. Removing micro/nanoplastics from their discharge points has been a central and effective way to mitigate the adverse pollution effects. In this review, we begin by discussing the hazardous effect on living beings and the identification-characterization of micro/nanoplastics. Then, we provide a summary of the existing degradation strategies, which include bio-degradation and advanced oxidation processes (AOPs), and a detailed discussion of their degradation mechanisms is also represented. Finally, a persuasive summary of the evaluated work and projections for the future of this topic is provided.
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Affiliation(s)
- Huy Hoang Phan Quang
- Faculty of Biology and Environment, Ho Chi Minh City University of Food Industry, 140 Le Trong Tan Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City, Vietnam
| | - Duc Anh Dinh
- VKTech Research Center, NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City 700000, Viet Nam
| | - Vishal Dutta
- University Centre for Research and Development, Department of Chemistry, Chandigarh University, Gharuan, Mohali, Punjab.
| | - Ankush Chauhan
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam-603103, Tamil Nadu, India.
| | - Sudip Kumar Lahiri
- Department of Mechanical & Industrial Engineering, 5 King's College Road, University of Toronto, Canada
| | - C Gopalakrishnan
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Tamil Nadu, 603203, India
| | - Arunkumar Radhakrishnan
- Department of Pharmacology, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam-603103, Tamil Nadu, India
| | - Khalid Mujasam Batoo
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Lan-Anh Phan Thi
- VNU Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Vietnam; Center for Environmental Technology and Sustainable Development (CETASD), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Vietnam.
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42
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Kothawale SS, Kumar L, Singh SP. Role of organisms and their enzymes in the biodegradation of microplastics and nanoplastics: A review. ENVIRONMENTAL RESEARCH 2023:116281. [PMID: 37276977 DOI: 10.1016/j.envres.2023.116281] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/27/2023] [Accepted: 05/28/2023] [Indexed: 06/07/2023]
Abstract
Microplastic (MP) and Nanoplastic (NP) contamination have become a critical ecological concern due to their persistent presence in every aspect of the ecosystem and their potentially harmful effects. The current approaches to eradicate these wastes by burning up and dumping adversely impact the environment, while recycling has its own challenges. As a result, applying degradation techniques to eliminate these recalcitrant polymers has been a focus of scientific investigation in the recent past. Biological, photocatalytic, electrocatalytic, and, recently, nanotechnologies have been studied to degrade these polymers. Nevertheless, it is hard to degrade MPs and NPs in the environment, and these degradation techniques are comparatively inefficient and require further development. The recent research focuses on the potential use of microbes to degrade MPs and NPs as a sustainable solution. Therefore, considering the recent advancements in this important research field, this review highlights the utilization of organisms and enzymes for the biodegradation of the MPs and NPs with their probable degradation mechanisms. This review provides insight into various microbial entities and their enzymes for the biodegradation of MPs. In addition, owing to the lack of research on the biodegradation of NPs, the perspective of applying these processes to NPs degradation has also been looked at. Finally, a critical evaluation of the recent development and perspective for future research to improve the effective removal of MPs and NPs in the environment through biodegradation is also discussed.
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Affiliation(s)
- Sheetal S Kothawale
- Centre for Research in Nanotechnology & Science (CRNTS), Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Lalit Kumar
- Department of Energy Science and Engineering Department (DESE), Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Swatantra P Singh
- Centre for Research in Nanotechnology & Science (CRNTS), Indian Institute of Technology Bombay, Mumbai, 400076, India; Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Mumbai, 400076, India; Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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43
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Monira S, Roychand R, Hai FI, Bhuiyan M, Dhar BR, Pramanik BK. Nano and microplastics occurrence in wastewater treatment plants: A comprehensive understanding of microplastics fragmentation and their removal. CHEMOSPHERE 2023; 334:139011. [PMID: 37230299 DOI: 10.1016/j.chemosphere.2023.139011] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/12/2023] [Accepted: 05/21/2023] [Indexed: 05/27/2023]
Abstract
Nano/microplastic (NP/MP) pollution is a growing concern for the water environment. Wastewater treatment plants (WWTPs) are considered the major recipients of MP before discharging into local waterbodies. MPs enter WWTPs mainly from synthetic fibers through washing activities and personal care products. To control and prevent NP/MP pollution, it is essential to have a comprehensive understanding of their characteristics, fragmentation mechanisms, and the effectiveness of the current treatment processes used in WWTPs for NP/MP removal. Therefore, the objectives of this study are to (i) understand the detailed mapping of NP/MP in the WWTP, (ii) understand the fragmentation mechanisms of MP into NP, and (iii) investigate the removal efficiency of NP/MP by existing processes in the WWTP. This study found that fiber is the dominant shape of MP, and polyethylene, polypropylene, polyethylene terephthalate, and polystyrene are the major polymer type of MP in wastewater samples. Crack propagation and mechanical breakdown of MP due to water shear forces induced by treatment facilities (e.g., pumping, mixing, and bubbling) could be the major causes for NP generation in the WWTP. Conventional wastewater treatment processes are ineffective for the complete removal of MPs. Although these processes are capable of removing ∼95% of MPs, they tend to accumulate in sludge. Thus, a significant number of MPs may still be released into the environment from WWTPs on a daily basis. Therefore, this study suggested that using DAF process in the primary treatment unit can be an effective strategy to control MP in the initial stage before it goes to the secondary and tertiary stage.
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Affiliation(s)
- Sirajum Monira
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Rajeev Roychand
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Faisal Ibney Hai
- School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Muhammed Bhuiyan
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Bipro Ranjan Dhar
- Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada
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44
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Jiang S, Yin M, Ren H, Qin Y, Wang W, Wang Q, Li X. Novel CuMgAlTi-LDH Photocatalyst for Efficient Degradation of Microplastics under Visible Light Irradiation. Polymers (Basel) 2023; 15:polym15102347. [PMID: 37242921 DOI: 10.3390/polym15102347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/08/2023] [Accepted: 05/14/2023] [Indexed: 05/28/2023] Open
Abstract
Microplastics (MPs) in the water system could easily enter the human body and pose a potential threat, so finding a green and effective solution remains a great challenge. At present, the advanced oxidation technology represented by photocatalysis has been proven to be effective in the removal of organic pollutants, making it a feasible method to solve the problem of MP pollution. In this study, the photocatalytic degradation of typical MP polystyrene (PS) and polyethylene (PE) by a new quaternary layered double hydroxide composite photomaterial CuMgAlTi-R400 was tested under visible light irradiation. After 300 h of visible light irradiation, the average particle size of PS decreased by 54.2% compared with the initial average particle size. The smaller the particle size, the higher the degradation efficiency. The degradation pathway and mechanism of MPs were also studied by GC-MS, which showed that PS and PE produced hydroxyl and carbonyl intermediates in the process of photodegradation. This study demonstrated a green, economical, and effective strategy for the control of MPs in water.
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Affiliation(s)
- Shengyun Jiang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Mingshan Yin
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Huixue Ren
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Yaping Qin
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Weiliang Wang
- Beicheng Environmental Engineering Co., Ltd., Jinan 250101, China
| | - Quanyong Wang
- Shandong Huacheng Urban Construction Design Engineering Co., Ltd., Jinan 250101, China
| | - Xuemei Li
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
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45
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Sun A, Wang WX. Photodegradation of Microplastics by ZnO Nanoparticles with Resulting Cellular and Subcellular Responses. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:8118-8129. [PMID: 37192337 DOI: 10.1021/acs.est.3c01307] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Both zinc oxide nanoparticles (ZnO NPs) and microplastics (MPs) were extracted from one commercial sunscreen, while other ingredients were removed based on the "like dissolves like" principle. MPs were further extracted by acidic digestion of ZnO NPs using HCl and characterized as spherical particles of approximately 5 μm with layered sheets in an irregular shape on the surface. Although MPs were stable in the presence of simulated sunlight and water after 12 h of exposure, ZnO NPs promoted the photooxidation by producing hydroxyl radicals, with a 2.5-fold increase in the carbonyl index of the degree of surface oxidation. As a result of surface oxidation, spherical MPs were more soluble in water and fragmented to irregular shapes with sharp edges. We then compared the cytotoxicity of primary MPs and secondary MPs (25-200 mg/L) to the HaCaT cell line based on viability loss and subcellular damages. The cellular uptake of MPs transformed by ZnO NPs was enhanced by over 20%, and MPs caused higher cytotoxicity compared with the pristine ones, as evidenced by a 46% lower cell viability, 220% higher lysosomal accumulation, 69% higher cellular reactive oxygen species, 27% more mitochondrial loss, and 72% higher mitochondrial superoxide at 200 mg/L. Our study for the first time explored the activation of MPs by ZnO NPs derived from commercial products and revealed the high cytotoxicity caused by secondary MPs, providing new evidence on the effects of secondary MPs on human health.
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Affiliation(s)
- Anqi Sun
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
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46
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Zhao S, Zhang J. Microplastics in soils during the COVID-19 pandemic: Sources, migration and transformations, and remediation technologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 883:163700. [PMID: 37105487 PMCID: PMC10125914 DOI: 10.1016/j.scitotenv.2023.163700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/26/2023] [Accepted: 04/19/2023] [Indexed: 05/03/2023]
Abstract
The COVID-19 pandemic has led to a notable upsurge of 5-10 % in global plastic production, which could have potential implications on the soil quality through increased microplastics (MPs) content. The elevated levels of MPs in the soil poses a significant threat to both the environment and human health, hence necessitating the remediation of MPs in the environment. Despite the significant attention given to MPs remediation in aqueous environments, less consideration has been given to MPs remediation in the soil. Consequently, this review highlights the major sources of MPs in the soil, their migration and transformation behaviors during the COVID-19 pandemic, and emphasizes the importance of utilizing remediation technologies such as phytoremediation, thermal treatment, microbial degradation, and photodegradation for MPs in the soil. Furthermore, this review provides a prospective outlook on potential future remediation methods for MPs in the soil. Although the COVID-19 pandemic is nearing its end, the long-term impact of MPs on the soil remains, making this review a valuable reference for the remediation of MPs in the post-pandemic soil.
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Affiliation(s)
- Shan Zhao
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; College of Civil Engineering, Tongji University, Shanghai 200092, China.
| | - Jian Zhang
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
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47
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Zheng Y, Fan P, Guo R, Liu X, Zhou X, Xue C, Ji H. Visible light driven reform of wasted plastics to generate green hydrogen over mesoporous ZnIn 2S 4. RSC Adv 2023; 13:12663-12669. [PMID: 37101527 PMCID: PMC10123493 DOI: 10.1039/d3ra02279j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023] Open
Abstract
As the global consumption of plastics keeps increasing, the accumulated plastics in the natural environment have threatened the survival of human beings. Photoreforming, as a simple and low-energy way, could transform wasted plastic into fuel and small organic chemicals at ambient temperature. However, the previously reported photocatalysts have some drawbacks, such as low efficiency, containing precious or toxic metal. Herein, a noble-free, non-toxic, and easy prepared mesoporous ZnIn2S4 photocatalyst has been applied in photoreforming of polylactic acid (PLA), polyethylene terephthalate (PET) and polyurethane (PU), generating small organic chemicals and H2 fuel under simulated sunlight. Plastic was degraded into small organic molecules after the pretreatment, which futher acted as the substrate for photoreforming. Mesoporous ZnIn2S4 exhibits high H2 production efficiency, strong redox ability, and long-term photostability. Furthermore, mesoporous ZnIn2S4 could overcome the hindrances of dyes and additives of realistic wasted plastic bags and bottles with high decomposition efficiency, providing an efficient and sustainable strategy for the upcycling of wasted plastics.
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Affiliation(s)
- Yeqin Zheng
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Ping Fan
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
| | - Rongjie Guo
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
| | - Xiaohui Liu
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Xiantai Zhou
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Can Xue
- School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
| | - Hongbing Ji
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
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Meegoda JN, Hettiarachchi MC. A Path to a Reduction in Micro and Nanoplastics Pollution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20085555. [PMID: 37107837 PMCID: PMC10139116 DOI: 10.3390/ijerph20085555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 04/13/2023] [Indexed: 05/11/2023]
Abstract
Microplastics (MP) are plastic particles less than 5 mm in size. There are two categories of MP: primary and secondary. Primary or microscopic-sized MP are intentionally produced material. Fragmentation of large plastic debris through physical, chemical, and oxidative processes creates secondary MP, the most abundant type in the environment. Microplastic pollution has become a global environmental problem due to their abundance, poor biodegradability, toxicological properties, and negative impact on aquatic and terrestrial organisms including humans. Plastic debris enters the aquatic environment via direct dumping or uncontrolled land-based sources. While plastic debris slowly degrades into MP, wastewater and stormwater outlets discharge a large amount of MP directly into water bodies. Additionally, stormwater carries MP from sources such as tire wear, artificial turf, fertilizers, and land-applied biosolids. To protect the environment and human health, the entry of MP into the environment must be reduced or eliminated. Source control is one of the best methods available. The existing and growing abundance of MP in the environment requires the use of multiple strategies to combat pollution. These strategies include reducing the usage, public outreach to eliminate littering, reevaluation and use of new wastewater treatment and sludge disposal methods, regulations on macro and MP sources, and a wide implementation of appropriate stormwater management practices such as filtration, bioretention, and wetlands.
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Affiliation(s)
- Jay N. Meegoda
- Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA
- Correspondence: ; Tel.: +1-973-596-2464
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49
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Lu Q, Zhou Y, Sui Q, Zhou Y. Mechanism and characterization of microplastic aging process: A review. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 2023; 17:100. [PMID: 36935734 PMCID: PMC10010843 DOI: 10.1007/s11783-023-1700-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 02/10/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
With the increasing production of petroleum-based plastics, the problem of environmental pollution caused by plastics has aroused widespread concern. Microplastics, which are formed by the fragmentation of macro plastics, are bio-accumulate easily due to their small size and slow degradation under natural conditions. The aging of plastics is an inevitable process for their degradation and enhancement of adsorption performance toward pollutants due to a series of changes in their physiochemical properties, which significantly increase the toxicity and harm of plastics. Therefore, studies should focus on the aging process of microplastics through reasonable characterization methods to promote the aging process and prevent white pollution. This review summarizes the latest progress in natural aging process and characterization methods to determine the natural aging mechanism of microplastics. In addition, recent advances in the artificial aging of microplastic pollutants are reviewed. The degradation status and by-products of biodegradable plastics in the natural environment and whether they can truly solve the plastic pollution problem have been discussed. Findings from the literature pointed out that the aging process of microplastics lacks professional and exclusive characterization methods, which include qualitative and quantitative analyses. To lessen the toxicity of microplastics in the environment, future research directions have been suggested based on existing problems in the current research. This review could provide a systematic reference for in-depth exploration of the aging mechanism and behavior of microplastics in natural and artificial systems.
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Affiliation(s)
- Qinwei Lu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237 China
| | - Yi Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237 China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092 China
| | - Qian Sui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237 China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092 China
| | - Yanbo Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237 China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092 China
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50
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Pandey P, Dhiman M, Kansal A, Subudhi SP. Plastic waste management for sustainable environment: techniques and approaches. WASTE DISPOSAL & SUSTAINABLE ENERGY 2023; 5:1-18. [PMID: 37359812 PMCID: PMC9987405 DOI: 10.1007/s42768-023-00134-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/28/2022] [Accepted: 01/05/2023] [Indexed: 03/08/2023]
Abstract
Excessive exploitation, negligence, non-degradable nature, and physical and chemical properties of plastic waste have resulted in a massive pollution load into the environment. Consequently, plastic entres the food chain and can cause serious health issues in aquatic animals and humans. The present review summarizes currently reported techniques and approaches for the removal of plastic waste. Many techniques, such as adsorption, coagulation, photocatalysis, and microbial degradation, and approaches like reduction, reuse and recycling are potentially in trend and differ from each other in their efficiency and interaction mechanism. Moreover, substantial advantages and challenges associated with these techniques and approaches are highlighted to develop an understanding of the selection of possible ways for a sustainable future. Nevertheless, in addition to the reduction of plastic waste from the ecosystem, many alternative opportunities have also been explored to cash plastic waste. These fields include the synthesis of adsorbents for the removal of pollutants from aqueous and gaseous stream, their utility in clothing, waste to energy and fuel and in construction (road making). Substantial evidence can be observed in the reduction of plastic pollution from various ecosystems. In addition, it is important to develop an understanding of factors that need to be emphasized while considering alternative approaches and opportunities to cash plastic waste (like adsorbent, clothing, waste to energy and fuel). The thrust of this review is to provide readers with a comprehensive overview of the development status of techniques and approaches to overcome the global issue of plastic pollution and the outlook on the exploitation of this waste as resources.
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Affiliation(s)
- Prashant Pandey
- Uttarakhand Pollution Control Board, Gaura Devi Paryavaran Bhawan, IT Park, Sahastradhara Road, Dehradun, Uttarakhand 248001 India
| | - Manisha Dhiman
- School of Management, IMS Unison University, Makkawala Greens, Mussoorie Road, Dehradun, Uttarakhand 248001 India
| | - Ankur Kansal
- Uttarakhand Pollution Control Board, Gaura Devi Paryavaran Bhawan, IT Park, Sahastradhara Road, Dehradun, Uttarakhand 248001 India
| | - Sarada Prasannan Subudhi
- Uttarakhand Pollution Control Board, Gaura Devi Paryavaran Bhawan, IT Park, Sahastradhara Road, Dehradun, Uttarakhand 248001 India
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