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Mghili B, Hasni S, Ben-Haddad M, Rangel-Buitrago N, Keznine M, Lamine I, Hamiche FZ, Haddaoui H, Abelouah MR, Demiathi M, Oubahaouali B, Jellal N, Touaf M, Ahannach Y, Hassou N, Cherradi S, Aksissou M. Plastic pollution on Moroccan beaches: Toward baselines for large-scale assessment. MARINE POLLUTION BULLETIN 2024; 201:116288. [PMID: 38531205 DOI: 10.1016/j.marpolbul.2024.116288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/20/2024] [Accepted: 03/20/2024] [Indexed: 03/28/2024]
Abstract
In Africa, Morocco is the 10th largest producer of plastic. The severity of this plastic has attracted increasing amounts of attention in the Moroccan Atlantic and Mediterranean in recent years. However, at the national level, there is limited knowledge of plastic pollution. To obtain an exhaustive and comprehensive evaluation of plastic pollution levels in Morocco, large-scale monitoring is needed on all the coasts of the country. In this context, this paper examined the composition, abundance, distribution, source and quality of beaches on two Moroccan coasts using four beach quality indices along 29 beaches. During two seasons, a total of 72,105 items were counted. The mean litter abundance was 0.31 items/m2, and the Mediterranean beaches were more dense than the Atlantic beaches. In particular, litter density was greater in spring (0.35 items/m2) than in summer (0.29 items/m2). The data indicate considerable differences in the density of marine debris according to the seasonality, beach typology and presence of rivers. Hazardous litter items were collected along both Moroccan coasts, constituting 8.41 % of the total collected items, with a mean of 0.026 items/m2. The use of environmental indices allowed us to classify Moroccan beaches as "moderate cleanliness", "moderate abundance" of plastics, "moderately safe" presence of hazardous litter and "mediocre" environmental status. The findings of the present study indicate that the sources of litter on both Moroccan coasts come mainly from recreational activities and dumping. The waste management practices recommended for Moroccan beaches include reducing sources, mitigating mitigation measures and changing littering behavior.
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Affiliation(s)
- Bilal Mghili
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco.
| | - Soufiane Hasni
- Biology Department, Faculty of Sciences and Technology of Tangier, Abdelmalek Essaadi University, Morocco
| | - Mohamed Ben-Haddad
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Nelson Rangel-Buitrago
- Programa de Física, Facultad de Ciencias Básicas, Universidad del Atlántico, Barranquilla, Atlántico, Colombia
| | - Mohamed Keznine
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Imane Lamine
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco; Higher Institute of Nursing Professions and Technical Health, Errachidia, Morocco
| | - Fatima Zahra Hamiche
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Hatim Haddaoui
- Scientific Institute, University Mohammed V, Rabat, Morocco
| | - Mohamed Rida Abelouah
- Laboratory of Aquatic Systems, Marine and Continental Environments (AQUAMAR), Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Manal Demiathi
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Brahim Oubahaouali
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Nadia Jellal
- Research Laboratory in Applied and Marine Geosciences, Geotechnics and Geohazards (LR3G), Faculty of Sciences, Abdelmalek Essaâdi University, 93000 Tetouan, Morocco
| | - Mounia Touaf
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Youssef Ahannach
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
| | - Najwa Hassou
- Higher Institute of Nursing Professions and Technical Health, Rabat, Morocco
| | - Sohayb Cherradi
- Polydisciplinary Faculty in Larache, University Abdelmalek Essadi, Morocco
| | - Mustapha Aksissou
- LESCB, URL-CNRST N° 18, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
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Ma S, Ji J, Mou Y, Shen X, Xu S. Enhanced adsorption for trivalent antimony by nano-zero-valent iron-loaded biochar: performance, mechanism, and sustainability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:112536-112547. [PMID: 37831269 DOI: 10.1007/s11356-023-30299-w] [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: 06/23/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023]
Abstract
The discharge of tailing leachate and metallurgical wastewater has led to an increasing trend of water pollution. In this study, nZVI-modified low-temperature biochar was used to adsorb Sb(III) from water. The adsorption capacity and speed of nZVI-BC were better than those of BC, and the best adsorption effect was observed for 4nZVI-BC, with 93.60 mg·g-1 maximum adsorptive capacity, which was 208.61% higher than the original BC. The Langmuir and Temkin models were well fitted (R2 ≥ 0.99), and PSO was more in line with the 4nZVI-BC adsorption process, indicating that the adsorption was a monolayer physico-chemical adsorption. The combination of XRD, FTIR, and XPS characterization demonstrated that the adsorption mechanism predominantly included redox reactions, complexation, and electrostatic interactions. The thermodynamic results demonstrated that 4nZVI-BC adsorption on Sb(III) was a spontaneous endothermic process. Additionally, the order of the influence of interfering ions on 4nZVI-BC was CO32- > H2PO4- > SO42- > Cl-. After three repeated uses and adsorption-desorption, the adsorption ratio of Sb(III) by 4nZVI-BC was still as high as 90% and 65%, respectively. This study provides a theoretical reference for the exploration and development of Sb(III) removal technologies for aquatic environments.
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Affiliation(s)
- Siyi Ma
- Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, GuizhouGuiyang, 550025, China
- College of Resources and Environmental Engineering, Guizhou University, GuizhouGuiyang, 550025, China
| | - Jianghao Ji
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Yizhen Mou
- Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, GuizhouGuiyang, 550025, China
- College of Resources and Environmental Engineering, Guizhou University, GuizhouGuiyang, 550025, China
| | - Xueyi Shen
- Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, GuizhouGuiyang, 550025, China
- College of Resources and Environmental Engineering, Guizhou University, GuizhouGuiyang, 550025, China
| | - Siqin Xu
- Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, GuizhouGuiyang, 550025, China.
- College of Resources and Environmental Engineering, Guizhou University, GuizhouGuiyang, 550025, China.
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Lu Y, Hintzen KW, Kurkina T, Ji Y, Schwaneberg U. Directed Evolution of Material Binding Peptide for Polylactic Acid-specific Degradation in Mixed Plastic Wastes. ACS Catal 2023; 13:12746-12754. [PMID: 37822861 PMCID: PMC10564037 DOI: 10.1021/acscatal.3c02142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/08/2023] [Indexed: 10/13/2023]
Abstract
In order to preserve our livelihood for future generations, responsible use of plastics in a climate-neutral and circular economy has to be developed so that plastics can be used in an environmentally friendly way by future generations. The prerequisite is that bioplastic polymers such as polylactic acid (PLA) can be efficiently recycled from petrochemical based plastic. Here, a concept in which accelerated PLA degradation in the mixed suspension of PLA and polystyrene (PS) nanoparticles has been achieved through an engineered material binding peptide. After comparison of twenty material binding peptides, Cg-Def is selected due to its PLA binding specificity. Finally, a suitable high-throughput screening system is developed for enhancing material-specific binding toward PLA in presence of PS. Through KnowVolution campaign, a variant Cg-Def YH (L9Y/S19H) with 2.0-fold improved PLA binding specificity compared to PS is generated. Contact angle and surface plasmon resonance measurements validated higher surface coverage of Cg-Def YH on PLA surface and the fusion of Cg-Def YH with PLA degrading enzyme confirmed the accelerated PLA depolymerization (two times higher than only enzyme) in mixed PLA/PS plastics.
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Affiliation(s)
- Yi Lu
- Institute
of Biotechnology, RWTH Aachen University, Aachen 52074, Germany
| | - Kai-Wolfgang Hintzen
- Institute
of Biotechnology, RWTH Aachen University, Aachen 52074, Germany
- DWI-Leibniz
Institute for Interactive Materials, Aachen 52074, Germany
| | - Tetiana Kurkina
- Institute
of Biotechnology, RWTH Aachen University, Aachen 52074, Germany
| | - Yu Ji
- Institute
of Biotechnology, RWTH Aachen University, Aachen 52074, Germany
| | - Ulrich Schwaneberg
- Institute
of Biotechnology, RWTH Aachen University, Aachen 52074, Germany
- DWI-Leibniz
Institute for Interactive Materials, Aachen 52074, Germany
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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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Zhang C, Mu Y, Li T, Jin FJ, Jin CZ, Oh HM, Lee HG, Jin L. Assembly strategies for polyethylene-degrading microbial consortia based on the combination of omics tools and the "Plastisphere". Front Microbiol 2023; 14:1181967. [PMID: 37138608 PMCID: PMC10150012 DOI: 10.3389/fmicb.2023.1181967] [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: 03/08/2023] [Accepted: 03/31/2023] [Indexed: 05/05/2023] Open
Abstract
Numerous microorganisms and other invertebrates that are able to degrade polyethylene (PE) have been reported. However, studies on PE biodegradation are still limited due to its extreme stability and the lack of explicit insights into the mechanisms and efficient enzymes involved in its metabolism by microorganisms. In this review, current studies of PE biodegradation, including the fundamental stages, important microorganisms and enzymes, and functional microbial consortia, were examined. Considering the bottlenecks in the construction of PE-degrading consortia, a combination of top-down and bottom-up approaches is proposed to identify the mechanisms and metabolites of PE degradation, related enzymes, and efficient synthetic microbial consortia. In addition, the exploration of the plastisphere based on omics tools is proposed as a future principal research direction for the construction of synthetic microbial consortia for PE degradation. Combining chemical and biological upcycling processes for PE waste could be widely applied in various fields to promote a sustainable environment.
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Affiliation(s)
- Chengxiao Zhang
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Yulin Mu
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Taihua Li
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Feng-Jie Jin
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Chun-Zhi Jin
- Cell Factory Research Centre, Korea Research Institute of Bioscience & Biotechnology, Daejeon, Republic of Korea
| | - Hee-Mock Oh
- Cell Factory Research Centre, Korea Research Institute of Bioscience & Biotechnology, Daejeon, Republic of Korea
| | - Hyung-Gwan Lee
- Cell Factory Research Centre, Korea Research Institute of Bioscience & Biotechnology, Daejeon, Republic of Korea
- Hyung-Gwan Lee,
| | - Long Jin
- College of Biology and the Environment, Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- *Correspondence: Long Jin,
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