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Wang H, Wang Z, Yang W, Jia H, You Z. Characterization, pollution, and beneficial utilization assessment of dredged sediments from coastal ports in China. MARINE POLLUTION BULLETIN 2025; 211:117389. [PMID: 39647276 DOI: 10.1016/j.marpolbul.2024.117389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2024] [Revised: 11/19/2024] [Accepted: 11/30/2024] [Indexed: 12/10/2024]
Abstract
China, the world's largest dredging nation with over 2 billion cubic meters dredged annually, urgently needs tailored strategies for reusing those dredged sediments based on their physicochemical traits and pollution levels. The properties (grain size, pH, density, and conductivity), nutrient contents (organic matter, N, P, K), and heavy metal risks (Cu, Pb, Zn, Cr, Cd, Ni, Hg, As) of dredged sediments were investigated across 14 ports in China. Notably, 80 % of dredged sediments in China coastal ports are composed of silt. Significant variations in organic matter, nutrients, and heavy metals concentrations were observed. Environmental indices (m-ERM-Q < 0.5, Igeo < 1 and PERI <150) indicate sediment-associated nutrients & heavy metals pose low environmental risks, except for Cd and Hg, which are potential pollution concerns. This research offers insights into tailored strategies for managing dredged sediments and proposes resource utilization approaches, including wetland restoration, for practical application in China.
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Affiliation(s)
- Huan Wang
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, PR China
| | - Zhaowei Wang
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, PR China.
| | - Wenchao Yang
- Key Laboratory of Coastal Ecology and Environment of State Oceanic Administration, National Marine Environmental Monitoring Center, Dalian 116023, PR China
| | - Hongliang Jia
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, PR China
| | - Zaijin You
- Centre for Ports and Maritime Safety, Dalian Maritime University, Dalian 116000, PR China
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2
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Fořt J, Afolayan A, Kočí V, Scheinherrová L, Jan J, Borovec J, Černý R. Potential of water sediments in construction materials: Current approaches and critical consideration of future challenges. Heliyon 2025; 11:e41121. [PMID: 39758408 PMCID: PMC11699368 DOI: 10.1016/j.heliyon.2024.e41121] [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: 07/15/2024] [Revised: 12/09/2024] [Accepted: 12/09/2024] [Indexed: 01/07/2025] Open
Abstract
Human activities result in sediment accumulation, so the reservoirs gradually lose their functionality, impacting their ability to manage large flood inflows, supply water, and generate hydroelectric power. Therefore, periodic removal of sediments from water reservoirs is essential to maintain functionality. Notwithstanding, the management of dredged sediments is a multifaceted process that involves careful consideration of environmental, regulatory, and economic factors to ensure their responsibility and sustainable handling. In this regard, the search for synergies represents an important development factor in the current industrial world, which can bring several benefits, especially in the construction industry. By reusing sediments, the environmental externalities typically associated with building materials production can be reduced by transforming sediments from waste material into valuable resources. The consolidated knowledge in this review emphasizes the advances in the upcycling of dredged sediments into building materials in various ways, including aggregate production, brick manufacturing, traditional binder replacement, and alkaline activation. The provided summary of benefits, disadvantages, challenges, and future potential of freshwater dredged sediments (FDS) use can stimulate the rationalization of material flows, reduce the dependence on primary raw materials in the construction industry, and at the same time contribute to maintaining the functionality of water reservoirs.
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Affiliation(s)
- Jan Fořt
- Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29, Prague 6, Czech Republic
| | - Ayodele Afolayan
- Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29, Prague 6, Czech Republic
| | - Václav Kočí
- Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29, Prague 6, Czech Republic
| | - Lenka Scheinherrová
- Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29, Prague 6, Czech Republic
| | - Jiří Jan
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology and Biogeochemistry, Branišovská 1160/31, 370 05, České Budějovice, Czech Republic
| | - Jakub Borovec
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology and Biogeochemistry, Branišovská 1160/31, 370 05, České Budějovice, Czech Republic
| | - Robert Černý
- Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29, Prague 6, Czech Republic
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3
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Liu Q, Sheng Y, Liu X, Wang Z. Reclamation of co-pyrolyzed dredging sediment as soil cadmium and arsenic immobilization material: Immobilization efficiency, application safety, and underlying mechanisms. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122753. [PMID: 39368382 DOI: 10.1016/j.jenvman.2024.122753] [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: 07/04/2024] [Revised: 09/04/2024] [Accepted: 09/29/2024] [Indexed: 10/07/2024]
Abstract
The safe management of toxic metal-polluted dredging sediment (DS) is imperative owing to its potential secondary hazards. Herein, the co-pyrolysis product (DS@BC) of polluted DS was creatively applied to immobilize soil Cd and As to achieve DS resource utilization, and the efficiency, safety, and mechanism were investigated. The results revealed that the DS@BC was more effective at reducing soil Cd bioavailability than the DS was (58.9-73.2% vs. 21.8-27.4%), except for the dilution effect, whereas the opposite phenomenon occurred for soil As (25.5-35.7% vs. 35.7-42.8%). The DS@BC immobilization efficiency was dose-dependent for both Cd and As. Soil labile Cd and As were transformed to more stable fractions after DS@BC immobilization. DS@BC immobilization inhibited the transfer of soil Cd and As to Brassica chinensis L. and did not cause excessive accumulation of other toxic metals in the plants. The appropriate addition of the DS@BC (8%) sufficiently alleviated the oxidative stress response of the plants and enhanced their growth. These findings indicate that the DS@BC was safe and effective for soil Cd and As immobilization. DS@BC immobilization decreased the diversity and richness of the rhizosphere soil bacterial community because of the dilution effect. The DS@BC immobilized soil Cd and As via direct adsorption, and indirect increasing soil pH, and regulating the abundance of specific beneficial bacteria (e.g., Bacillus). Therefore, the use of co-pyrolyzed DS as a soil Cd and As immobilization material is a promising resource utilization method for DS. Notably, to verify the long-term effects and safety of DS@BC immobilization, field trials should be conducted to explore the effectiveness and risk of harmful metal release from DS@BC immobilization under real-world conditions.
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Affiliation(s)
- Qunqun Liu
- Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China.
| | - Yanqing Sheng
- Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China; State Environmental Protection Key Laboratory of Land and Sea Ecological Governance and Systematic Regulation, Shandong Academy for Environmental Planning, Jinan, 250101, China
| | - Xiaozhu Liu
- Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China; University of Chinese Academy of Sciences, Beijing, China
| | - Zheng Wang
- Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, Shandong, China; University of Chinese Academy of Sciences, Beijing, China
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Huang H, Luo J, Ma R, Zhang D, Sun S, Du C. Review on microwave immobilization of soil heavy metals: Processes and mechanisms. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122824. [PMID: 39378819 DOI: 10.1016/j.jenvman.2024.122824] [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: 06/05/2024] [Revised: 09/27/2024] [Accepted: 10/02/2024] [Indexed: 10/10/2024]
Abstract
Soil contamination with heavy metals (HMs) is still a global issue. The maintenance of long-term stability of HMs in soil during immobilization remediation is a challenge. Microwave (MW) technology can promote the immobilization of HMs in the form of crystals and minerals, thus enhancing their resistance of corrosion. This review provides a comprehensive introduction to the basics of MW irradiation through 177 papers, and reviews the research progress of MW involvement in the immobilization of soil HMs in 10 years. The effects of MW parameter settings, absorber/fixative types and soil physicochemical properties on immobilized HMs are investigated. The immobilization mechanisms of HMs are discussed, high-temperature physical encapsulation and chemical stabilization are the two basic mechanisms in the immobilization process. MW has a unique heating method to achieve efficient remediation by shortening remediation time, reducing the activation energy of reactions and promoting the transformation of stabilization products. Finally, the current limitations of MW in the remediation of HMs contaminated soils are systematically discussed and the corresponding proposed solutions are presented which may provide directions for further laboratory studies. There are still serious problems in taking the results obtained in the laboratory to the full scale. Thus, process optimization, scale-up, design and demonstration are strongly desired. In summary, this review may help new researchers to seize the research frontier in MW and can serve as a reference for future development of MW technology in soil remediation.
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Affiliation(s)
- Huiyin Huang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Juan Luo
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Rui Ma
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Dengcai Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Shichang Sun
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Chaoyong Du
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
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Rodil IF, Rodriguez VP, Bernal-Ibáñez A, Pardiello M, Soccio F, Gestoso I. High contribution of an invasive macroalgae species to beach wrack CO 2 emissions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122021. [PMID: 39079488 DOI: 10.1016/j.jenvman.2024.122021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/16/2024] [Accepted: 07/26/2024] [Indexed: 08/15/2024]
Abstract
Accumulations of macroalgal wrack are important for adequate functioning of the beach ecosystem. However, the sudden beaching of seaweed masses smothers the coastline and forms decomposing piles on the shore, harming tourism-based economies, but also affecting the beach ecosystem metabolism. The decomposition of sudden pulses of wrack can modify the biogeochemistry of beach sands and increase greenhouse gas (GHG) emissions. The presence of invasive species in the wrack deposits can superimpose harmful effects on the beach functioning. We quantified the wrack biomass of Rugulopteryx okamurae, an invasive species of extreme impact, on five sandy beaches from the Atlantic coast of the Strait of Gibraltar (Spain), and we tested the effects on in situ respiratory CO2 fluxes using an infrared gas analyser. All the beaches showed massive accumulations of Rugulopteryx wrack deposits. However, the biomass changed significantly between beaches, ranging (mean ± SE) from 968.3 ± 287.7 kg m-1 to 9210 ± 1279.4 kg m-1 of wet weight. Wrack supported high respiration rates, with CO2 fluxes averaging (±SE) 19.15 ± 5.5 μmol CO2 m-2 s-1 across beaches, reaching astounding maximum peaks of 291 μmol CO2 m-2 s-1. The within-beach variability was related to the distance of the wrack deposits from the shoreline, as the average metabolic rates tended to increase significantly from the swash to the drift line. Thicker wrack and a more degraded algae stage showed significantly higher CO2 fluxes. We estimated that the annual CO2 flux of R. okamurae in our study area ranged between 0.39 (±0.01) and 23.30 (±11.33) kg C m-2 y-1. We suggest that massive amounts of beach wrack can become a globally significant contributor to GHG emissions that can offset any potential carbon-sink capacity of macroalgal forests. However, the piles of wrack located several meters above the drift line showed non-measurable CO2 efflux. Transferring beach wrack from swash to drier upper-beach areas, a common practice in many coastal regions suffering from massive wrack accumulations, might help reduce GHG emissions while removing the wrack stockpiles from the intertidal. However, this practice is not necessarily suitable for all beaches and can create ecological and conservation problems in the dune system. There is an urgent need to implement practical and sustainable management practices for massive wrack deposits capable of presenting various solutions to achieve a balance between conservation and recreation actions, answering the consequences of a problem that links both, environmental and economic issues.
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Affiliation(s)
- Iván Franco Rodil
- Marine Research Institute (INMAR)-Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain.
| | - Valle Perez Rodriguez
- Marine Research Institute (INMAR)-Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain
| | - Alejandro Bernal-Ibáñez
- MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI). Funchal, Madeira, Portugal; Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal; Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro El Toruño, Junta de Andalucía, El Puerto de Santa María, Cádiz, Spain
| | - Mauro Pardiello
- Department of Earth and Environmental Sciences, University of Pavia, Italy
| | - Federica Soccio
- Department of Earth and Environmental Sciences, University of Pavia, Italy
| | - Ignacio Gestoso
- Marine Research Institute (INMAR)-Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain; MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI). Funchal, Madeira, Portugal; Smithsonian Environmental Research Center (SERC), Edgewater, MD, United States
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Chen D, Li G, Tang J, Zhao L, Wang YP, Gao C. Evaluating the effects of laver cultivation on tidal flat erosion: Toward sustainable environmental practices. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121830. [PMID: 39013316 DOI: 10.1016/j.jenvman.2024.121830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Revised: 07/05/2024] [Accepted: 07/09/2024] [Indexed: 07/18/2024]
Abstract
The rapid expansion of laver (Porphyra yezoensis) cultivation on lower tidal flats has become integral to the local economy, yet it also raises concerns regarding its potential impact on the morphological evolution due to increasing human activities. This study utilizes integrated near-bed field measurements to assess morphological dynamics and quantify sediment erosion processes, highlighting the significant impact of laver harvest on tidal flat stability. Our results show that erosion and bed coarsening in the cultivated areas experienced a notable intensification immediately after harvest, with net erosion in cultivated areas reaching approximately -38.2 mm during the first tide post-harvest, markedly higher-more than an order of magnitude-compared to adjacent uncultivated areas. The erosion rate notably spiked with the average bed level change rate increasing to -13.8 × 10-4 mm/s, compared to a rate of +0.3 × 10-4 mm/s during the unharvest period. Subsequently, the cultivated areas entered a recovery phase with a deposition amount of +12.5 mm, while the net cumulative erosion thickness throughout the entire observation period was -25.2 mm. The cultivation method, characterized by consistent harvests every 10 days, means that even minor erosion from continuous harvests can escalate into significant degradation. This study suggests that long-term cultivation cycle practices may result in irreversible changes to the depositional environment, potentially jeopardizing the habitat viability and ecological function. Sustainable agricultural strategies, including site selection, infrastructure planning, monitoring environmental changes, ecological assessments and sustainable practices, are recommended to mitigate the negative impacts of cultivation on regional stability and preserve the coastal ecological balance.
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Affiliation(s)
- Dezhi Chen
- Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai, 536000, China; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai, 536000, China
| | - Gaocong Li
- School of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, 524000, China
| | - Jieping Tang
- School of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, 524000, China
| | - Lintao Zhao
- Key Laboratory of Tropical Marine Ecosystem and Bioresource, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai, 536000, China; Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai, 536000, China
| | - Ya Ping Wang
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210093, China; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China.
| | - Chao Gao
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210093, China.
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Dorleon G, Rigaud S, Techer I. Management of dredged marine sediments in Southern France: main keys to large-scale beneficial re-use. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33129-9. [PMID: 38616226 DOI: 10.1007/s11356-024-33129-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 03/25/2024] [Indexed: 04/16/2024]
Abstract
Fifty million cubic meters of marine sediments are dredged each year in France in order to maintain harbor activities and sustain the economy of littoral territories. Because of anthropogenic activities in and around harbors, sediments can contain significant amounts of chemical and organic pollutants whose behavior during dredging must be addressed in order to avoid releasing risks for humans and the environment. French regulations come to govern the management of dredged sediments, considering them "safe" and possible to be dumped at sea or "contaminated" and needed to be treated on land as waste. In recent years, new constraints have been pushed toward the management of land. This management is, however, challenging as few channels are proposed to reuse marine sediments, and elimination appears to be economically and environmentally unsustainable. This study provides an overview of the technical and regulatory aspects related to dredged marine sediment management in France and aims to identify and discuss the limits of their valorization. Dredged sediments are mainly composed of particles with heterogeneous grain size, some being known for many applications such as building materials and growing media. However, several reasons have been put forward to explain why these particles are not reused when extracted from dredged sediments. Several technical, socio-economic, and regulatory obstacles explain the low demand for dredged sediments. This demand can be stimulated by government incentives and a good regulatory framework. National regulations could help streamline their reuse by removing their "waste" status and creating a regulated market for dredged sediment.
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Affiliation(s)
- Garry Dorleon
- UPR 7352 CHROME, Laboratoire Géosciences de L'Environnement, Site Hoche - Université de Nîmes, 1 Place du Président Doumergue, 30000, Nîmes, France.
| | - Sylvain Rigaud
- UPR 7352 CHROME, Laboratoire Géosciences de L'Environnement, Site Hoche - Université de Nîmes, 1 Place du Président Doumergue, 30000, Nîmes, France
| | - Isabelle Techer
- UPR 7352 CHROME, Laboratoire Géosciences de L'Environnement, Site Hoche - Université de Nîmes, 1 Place du Président Doumergue, 30000, Nîmes, France
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8
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Martins M, Sousa F, Soares C, Sousa B, Pereira R, Rubal M, Fidalgo F. Beach wrack: Discussing ecological roles, risks, and sustainable bioenergy and agricultural applications. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120526. [PMID: 38492423 DOI: 10.1016/j.jenvman.2024.120526] [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: 11/15/2023] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 03/18/2024]
Abstract
The equilibrium of the marine ecosystem is currently threatened by several constraints, among which climate change and anthropogenic activities stand out. Indeed, these factors favour the growth of macroalgae, which sometimes end up stranded on the beaches at the end of their life cycle, forming what is known as beach wrack. Despite its undeniable important ecological role on beaches, as it is an important source of organic matter (OM), and provides food and habitat for several invertebrates, reptiles, small mammals, and shorebirds, the overaccumulation of beach wrack is often associated with the release of greenhouse gases, negatively impacting tourist activities, and generating economic expenses for its removal. Although currently beach wrack is mainly treated as a waste, it can be used for numerous potential applications in distinct areas. This review aimed at providing a solid point of view regarding the process of wrack formation, its spatiotemporal location, as well as its importance and risks. It also contains the current advances of the research regarding sustainable alternatives to valorise this organic biomass, that range from bioenergy production to the incorporation of wrack in agricultural soils, considering a circular economy concept. Although there are some concerns regarding wrack utilisation, from its variable availability to a possible soil contamination with salts and other contaminants, this review comprises the overall beneficial effects of the incorporation of this residue particularly in the organic agricultural model, strengthening the conversion of this wasted biomass into a valuable resource.
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Affiliation(s)
- Maria Martins
- GreenUPorto - Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal.
| | - Filipa Sousa
- GreenUPorto - Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal
| | - Cristiano Soares
- GreenUPorto - Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal
| | - Bruno Sousa
- GreenUPorto - Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal
| | - Ruth Pereira
- GreenUPorto - Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal
| | - Marcos Rubal
- Centre of Molecular and Environmental Biology (CBMA/ARNET), Department of Biology, University of Minho, 4710-057, Braga, Portugal
| | - Fernanda Fidalgo
- GreenUPorto - Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal
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Asnicar D, Fabrello J, Ciscato M, Masiero L, Marin MG, Corami F, Milan M, Bernardini I, Patarnello T, Cecchetto M, Giubilato E, Bettiol C, Semenzin E, Matozzo V. A multibiomarker approach in clams (Ruditapes philippinarum) for a toxicological evaluation of dredged sediments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123095. [PMID: 38070644 DOI: 10.1016/j.envpol.2023.123095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/02/2023] [Accepted: 12/02/2023] [Indexed: 12/17/2023]
Abstract
The Lagoon of Venice is often dredged for channel maintenance. To avoid harmful consequences to the ecosystem, a proper disposal of bottom sediments requires a preliminary evaluation of its potential toxicity before excavation. Here we evaluated the effects of polluted sediments on clams (Ruditapes philippinarum) using a multibiomarker approach. Bivalves were exposed for 3 and 14 days to five sediment samples collected along a navigation canal between Venice historical centre and the industrial area of Porto Marghera. Immunological, antioxidant, detoxification, and neurotoxicity biomarkers were analysed in haemolymph, gill, and digestive gland. As a control, sediment collected far from pollution sources was used. Two experiments were performed to assess potential seasonal/gametogenic influence in clam sensitivity. A different response of clam biomarkers was observed during the two experiments and among sampling sites. Clams' digestive gland resulted to be the most sensitive tissue analysed showing significant differences among sites in all biomarkers analysed. Greater differences were present due to seasonality rather than exposure. The concentrations of metals and organic pollutants increased from the city centre to the industrial area, highlighting the influence that industrial activities had on the lagoon ecosystem. However, bioaccumulation in clams did not follow the same clear pattern, suggesting low bioavailability of compounds due to relatively high organic matter content. Biomarkers modulation was mainly driven by metals, both present in sediments and bioaccumulated. In comparison, effects of organic pollutants on the biomarkers tested were negligible. Other sources of contamination not investigated (e.g. pesticides) were suggested by neurotoxicity biomarkers alteration.
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Affiliation(s)
- Davide Asnicar
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy; Aquatic Bioscience, Huntsman Marine Science Centre, 1 Lower Campus Road, E5B 2L7, St Andrews, New Brunswick, Canada
| | - Jacopo Fabrello
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Maria Ciscato
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Luciano Masiero
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Maria Gabriella Marin
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Fabiana Corami
- Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy; Institute of Polar Sciences, CNR-ISP, Campus Scientifico - Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy
| | - Massimo Milan
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, Agripolis, 35020, Legnaro, PD, Italy
| | - Ilaria Bernardini
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, Agripolis, 35020, Legnaro, PD, Italy
| | - Tomaso Patarnello
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, Agripolis, 35020, Legnaro, PD, Italy
| | - Martina Cecchetto
- Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy
| | - Elisa Giubilato
- Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy
| | - Cinzia Bettiol
- Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy
| | - Elena Semenzin
- Department of Environmental Sciences, Informatics, and Statistics, Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy
| | - Valerio Matozzo
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy.
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10
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Wu S, Peng X, Sun X, Dong Z, Zhou A, Zhang L, Wang R. One-step processing of waste dredged slurry into planting soil by targeted pretreatment and vacuum filtration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119334. [PMID: 37918235 DOI: 10.1016/j.jenvman.2023.119334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/29/2023] [Accepted: 10/12/2023] [Indexed: 11/04/2023]
Abstract
A novel method, targeted pretreatment and vacuum filtration (TP-VF), is introduced and validated in this study. TP-VF offers a one-step solution for efficiently dewatering dredged slurry (DS) characterized by heavy metal contamination, high salinity, and excessive moisture content. This innovative approach combines targeted pretreatment (TP) and vacuum filtration (VF) to transform DS into the viable planting soil. TP encompasses a dual optimization strategy that enhances both slurry dewatering efficiency and the quality of the resultant planting soil (cake). By employing flocculation pretreatment, TP increases the size of flocs and enlarges cake pores, leading to improvements in dewatering efficiency and infiltration rates. Additionally, targeted pretreatment results in the discharge of approximately 90% of heavy metal ions and most salts with the filtrate. Remarkably, the addition of chelating agents and freshwater as part of the pretreatment process positively impacts soil quality without compromising floc size or dewatering efficiency. Comparatively, TP-VF demonstrates a substantial reduction of 35.81% in operational costs when contrasted with the traditional two-step process, concurrently diminishing the potential for secondary environmental pollution. This study highlights TP-VF as a promising advancement in sustainable slurry management, addressing pressing environmental challenges while optimizing resource utilization.
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Affiliation(s)
- Silin Wu
- School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Jiangsu Province Engineering Research Center of Geoenvironmental Disaster Prevention and Remediation, Zhenjiang, 212100, China; Shenzhen Key Laboratory of Green, Efficient and Intelligent Construction of Underground Metro Station, Shenzhen, 518060, China
| | - Xiao Peng
- School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Jiangsu Province Engineering Research Center of Geoenvironmental Disaster Prevention and Remediation, Zhenjiang, 212100, China
| | - Xiaohui Sun
- Shenzhen Key Laboratory of Green, Efficient and Intelligent Construction of Underground Metro Station, Shenzhen, 518060, China; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Zijun Dong
- Shenzhen Key Laboratory of Green, Efficient and Intelligent Construction of Underground Metro Station, Shenzhen, 518060, China; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Aizhao Zhou
- School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Jiangsu Province Engineering Research Center of Geoenvironmental Disaster Prevention and Remediation, Zhenjiang, 212100, China
| | - Lei Zhang
- School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, China; Jiangsu Province Engineering Research Center of Geoenvironmental Disaster Prevention and Remediation, Zhenjiang, 212100, China
| | - Ruochen Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, China
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11
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Sordes F, Pellequer E, Sahli S, Sarzynski T, Denes M, Techer I. Phytoremediation of chloride from marine dredged sediments: A new model based on a natural vegetation recolonization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118508. [PMID: 37392694 DOI: 10.1016/j.jenvman.2023.118508] [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: 03/24/2023] [Revised: 06/23/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
Phytoremediation is a type of bioremediation process that involves the use of plants to remove or degrade contaminants from soil, water, or air. In most of the observed phytoremediation models, plants are introduced and planted on a polluted site to take up, absorb, or transform contaminants. This study aims to explore a new mixed phytoremediation approach that involves natural recolonization of a contaminated substrate, by identifying the species growing naturally, their bioaccumulation capacity, and by modeling annual mowing cycles of their aerial parts. This approach aims to evaluate the phytoremediation potential of such a model. Both natural and human interventions are involved in this approach, which is referred to as a mixed phytoremediation process. The study focuses on chloride phytoremediation from a chloride-rich and regulated substrate that is marine dredged sediments abandoned for 12 years and recolonized for 4 years. The sediments are colonized by a Suaeda vera dominated vegetation and possess heterogeneity in lixiviate chloride and conductivity. The study found that despite Suaeda vera is the well adapted species for this environment, it is not an effective species for phytoremediation as it has low bioaccumulation and translocation rates (9.3 and 2.6 respectively), and disturbs chloride leaching below in the substrate. Other identified species, such as Salicornia sp., Suaeda maritima, and Halimione portulacoides, have better phytoaccumulation (respectively 39.8, 40.1, 34.8) and translocation rates (respectively 7.0, 4.5, 5.6) and can successfully remediate the sediment in 2-9 years. The following species have been found to bioaccumulate chloride in aboveground biomass at the following rates: Salicornia sp. (181 g/kg DW), Suaeda maritima (160 g/kg DW), Sarcocornia perennis (150 g/kg DW), Halimione portulacoides (111 g/kg DW) and Suaeda vera (40 g/kg DW).
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Affiliation(s)
- Flo Sordes
- UPR CHROME, Univ. Nîmes, Rue Du Dr Georges Salan, 30021, Nîmes, France.
| | - Emeline Pellequer
- UPR CHROME, Univ. Nîmes, Rue Du Dr Georges Salan, 30021, Nîmes, France
| | - Slimane Sahli
- UPR CHROME, Univ. Nîmes, Rue Du Dr Georges Salan, 30021, Nîmes, France
| | - Thuan Sarzynski
- CIRAD (Centre de coopération Internationale en Recherche Agronomique pour le Développement), UMR DIADE, F-34398, Montpellier, France; UMR DIADE (Diversity, Adaptation, Development of Plants), University of Montpellier, CIRAD, IRD, F-34398, Montpellier, France
| | - Mathilde Denes
- UPR CHROME, Univ. Nîmes, Rue Du Dr Georges Salan, 30021, Nîmes, France
| | - Isabelle Techer
- UPR CHROME, Univ. Nîmes, Rue Du Dr Georges Salan, 30021, Nîmes, France
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12
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Duan P, Ding S, Jiao L, Wang M, Zhang Y, Qian C. Simultaneous immobilization of ammonia and phosphorous by thermally treated sediment co-modified with hydrophilic organic matter and zeolite. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 339:117800. [PMID: 37030239 DOI: 10.1016/j.jenvman.2023.117800] [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: 12/25/2022] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 05/03/2023]
Abstract
The use of calcined sediments (CS) for thin-layer capping is an environment-friendly technology for controlling nitrogen (N) or phosphorus (P) release. However, the effects of CS derived materials and efficiency in controlling the sedimentary N/P ratio have not been thoroughly investigated. While zeolite-based materials have been proven efficient to remove ammonia, it is limited by the low adsorption capacity of PO43-. Herein, CS co-modified with zeolite and hydrophilic organic matter (HIM) was synthesized to simultaneously immobilize ammonium-N (NH4+-N) and remove P, due to the superior ecological security of natural HIM. Studies on the influences of calcination temperature and composition ratio indicated that 600 °C and 40% zeolite were the optimal parameters leading to the highest adsorption capacity and lowest equilibrium concentration. Compared with doping with polyaluminum chloride, doping with HIM not only enhanced P removal but also achieved higher NH4+-N immobilization efficacy. The efficiency of zeolite/CS/HIM capping and amendment in prohibiting the discharge of N/P from sediments was assessed via simulation experiments, and the relevant control mechanism was studied at the molecular level. The results indicated that zeolite/CS/HIM can reduce 49.98% and 72.27% of the N flux and 32.10% and 76.47% of the P flux in slightly and highly polluted sediments, respectively. Capping and incubation with zeolite/CS/HIM simultaneously resulted in substantial reductions in NH4+-N and dissolved total P in overlying water and pore water. Chemical state analysis indicated that HIM enhanced the NH4+-N adsorption ability of CS owing to its abundant carbonyl groups and indirectly increased P adsorption by protonating mineral surface groups. This research provides a novel strategy to control sedimentary nutrient release by adopting an efficient and ecologically secure remediation method to rehabilitate eutrophic lake systems.
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Affiliation(s)
- Pingzhou Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Shuai Ding
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Environmental Standard Institute, Ministry of Ecology and Environment of the People's Republic of China, Beijing, 100012, People's Republic of China
| | - Lixin Jiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.
| | - Miao Wang
- Leping Branch of Jingdezhen Ecological Environment Bureau, Jiangxi, Leping, 333300, People's Republic of China
| | - Yun Zhang
- Coal Mining Geological Engineering Consulting and Geological Environment Monitoring Center, Guizhou, 550002, People's Republic of China
| | - Chang Qian
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
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13
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Maqbool T, Jiang D. Electrokinetic remediation leads to translocation of dissolved organic matter/nutrients and oxidation of aromatics and polysaccharides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162703. [PMID: 36906032 DOI: 10.1016/j.scitotenv.2023.162703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/03/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Dissolved organic matter (DOM) in the sediment matrix affects contaminant remediation through consumption of oxidants and binding with contaminants. Yet the change in DOM during remediation processes, particularly during electrokinetic remediation (EKR), remains under-investigated. In this work, we elucidated the fate of sediment DOM in EKR using multiple spectroscopic tools under abiotic and biotic conditions. We found that EKR led to significant electromigration of the alkaline-extractable DOM (AEOM) toward the anode, followed by transformation of the aromatics and mineralization of the polysaccharides. The AEOM remaining in the cathode (largely polysaccharides) was resistant to reductive transformation. Limited difference was noted between abiotic and biotic conditions, indicating the dominance of electrochemical processes when relatively high voltages were applied (1-2 V/cm). The water-extractable organic matter (WEOM), in contrast, showed an increase at both electrodes, which was likely attributable to pH-driven dissociations of humic substances and amino acid-type constituents at the cathode and the anode, respectively. Nitrogen migrated with the AEOM toward the anode, but phosphorus remained immobilized. Understanding the redistribution and transformation of DOM could inform studies on contaminant degradation, carbon and nutrient availability, and sediment structural changes in EKR.
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Affiliation(s)
- Tahir Maqbool
- Department of Civil, Construction, and Environmental Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Daqian Jiang
- Department of Civil, Construction, and Environmental Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA.
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14
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Liu Q, Sheng Y, Wang Z. Co-pyrolysis with pine sawdust reduces the environmental risks of copper and zinc in dredged sediment and improves its adsorption capacity for cadmium. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 334:117502. [PMID: 36796196 DOI: 10.1016/j.jenvman.2023.117502] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/05/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Proper treatment of heavy metal-contaminated dredged sediment (DS) is crucial to avoid secondary pollution. Effective and sustainable technologies are desired for the treatment of Zn- and Cu-contaminated DS. Due to the advantages of low energy consumption and time saving, co-pyrolysis technology was innovatively applied to treat Cu- and Zn-polluted DS in this study, and the effects of the co-pyrolysis conditions on Cu and Zn stabilization efficiencies, potential stabilization mechanisms, and the possibility for resource utilization of co-pyrolysis product were also investigated. The results showed that pine sawdust is an appropriate co-pyrolysis biomass for the stabilization of Cu and Zn based on the leaching toxicity analysis. The ecological risks of Cu and Zn in DS were reduced after co-pyrolysis treatment. The total concentrations of Zn and Cu in co-pyrolysis products were decreased by 5.87%-53.45% and 8.61%-57.45% of that in DS before co-pyrolysis. However, the total concentrations of Zn and Cu in DS remained basically unchanged after co-pyrolysis, which indicating the decreases in total concentrations of Zn and Cu in co-pyrolysis products were mainly related to dilution effect. Fraction analysis indicated that co-pyrolysis treatment contributed to transforming weakly bound Cu and Zn into stable fractions. The co-pyrolysis temperature and mass ratio of pine sawdust/DS had a greater influence than co-pyrolysis time on the fraction transformation of Cu and Zn. The leaching toxicity of Zn and Cu from the co-pyrolysis products was eliminated when the co-pyrolysis temperature reached 600 and 800 °C, respectively. Analysis of the X-ray photoelectron spectroscopy and X-ray diffraction results demonstrated that co-pyrolysis treatment could transform mobile Cu and Zn in DS into metal oxides, metal sulfides, phosphate compounds, etc. Batch adsorption procedures suggested that the co-pyrolysis product possessed a high adsorption capacity for Cd (95.70 mg/g at 318 K). The formation of CdCO3 precipitates and the complexation effects of oxygen-containing functional groups were the principal adsorption mechanisms of the co-pyrolysis product. Overall, this study provides new insights into sustainable disposal and resource utilization for heavy metal-contaminated DS.
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Affiliation(s)
- Qunqun Liu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Yanqing Sheng
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
| | - Zheng Wang
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
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15
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Xia R, Duan P, Li R, Jiao L, He J, Ding S, Wu X. Effects of calcination on the environmental behavior of sediments by phosphorus speciation and interface characterization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117103. [PMID: 36603249 DOI: 10.1016/j.jenvman.2022.117103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/27/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Dredged sediments derived from eutrophicated lakes poses hardness of sludge disposal and ecological risks. The proper pretreatment and utilization of dredged sediments presented a challenge. In this study, Dianchi Lake sediments were dredged, thermally treated and utilized as particle capping material in batch experiments. The effects of calcination on phosphorus speciation and sediment-water interface environment as well as P immobility mechanism were predominantly explored. The microstructures and chemical compositions of calcined sediments were investigated, indicating the porosity and mineralization components were greatly enhanced. The fractional analysis of phosphorus revealed that the calcination process reduced the percentage of unsteady phosphorus, transforming into stable inert phosphorus fractions (Al-P, Ca-P and Res-P), respectively, thereby minimized its mobility and eutrophication risk. Interestingly, calcination temperatures of 700 °C and 800 °C resulted in smaller releasing potentials and equilibrium phosphorus concentrations, despite having lower adsorption capacities than 550 °C. Furthermore, the results of redox potential monitoring showed that the thermally treated Dianchi Lake sediments could enhance the redox potential and dissolved oxygen in the surface sediment, indicating the amelioration of interfacial environment. The practical monitoring experiments confirmed the capping depressed the DTP to 0.031 mg L-1. The investigation of this study provided explicit evidence of Ca coupled P and aerobic Fe bound P strengthened the immobilization effects, and the development of sediment calcination demonstrates a promising strategy for alleviating the burden of endogenous pollution and improving aerobic environment, which are of great significance for lake ecological remediation.
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Affiliation(s)
- Rui Xia
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Pingzhou Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Rui Li
- Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, 430010, People's Republic of China
| | - Lixin Jiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.
| | - Jia He
- Kunming Institute of Eco-Environmental Sciences, Yunnan, Kunming, 650032, People's Republic of China
| | - Shuai Ding
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Xue Wu
- Kunming Institute of Eco-Environmental Sciences, Yunnan, Kunming, 650032, People's Republic of China
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16
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Corbau C, Buoninsegni J, Olivo E, Vaccaro C, Nardin W, Simeoni U. Understanding through drone image analysis the interactions between geomorphology, vegetation and marine debris along a sandy spit. MARINE POLLUTION BULLETIN 2023; 187:114515. [PMID: 36580840 DOI: 10.1016/j.marpolbul.2022.114515] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 12/12/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
Marine litter (ML) is recognized as one of the main socio-economic and environmental concerns and monitoring operations have been realized worldwide in order to collect information on the types, quantities and distribution of marine debris. In this study, we used Unmanned Aerial Vehicle (UAV) images to map the presence of ML on a coastal spit in relation to geomorphological aspects and vegetation. Our results show that ML is present everywhere, but concentrates in the beach wrack, dunes, and saltmarshes, highlighting the role of the vegetation in trapping ML. Moreover, ML will most probably remain trapped by the saltmarsh vegetation, since they are not visible and easily accessible to allow cleaning operations. On the contrary, cleaning operations may remove the ML present in the beach wrack. Finally, our results provide useful information to support decision-makers for improving beach cleaning activities in the Po river Delta areas (Italy).
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Affiliation(s)
- Corinne Corbau
- University of Ferrara, Ferrara, Italy; HPL - UMCES, Cambridge, MD, USA; CURSA, Roma, Italy.
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17
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Björk M, Rosenqvist G, Gröndahl F, Bonaglia S. Methane emissions from macrophyte beach wrack on Baltic seashores. AMBIO 2023; 52:171-181. [PMID: 36029461 PMCID: PMC9666566 DOI: 10.1007/s13280-022-01774-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/27/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Beach wrack of marine macrophytes is a natural component of many beaches. To test if such wrack emits the potent greenhouse gas methane, field measurements were made at different seasons on beach wrack depositions of different ages, exposure, and distance from the water. Methane emissions varied greatly, from 0 to 176 mg CH4-C m-2 day-1, with a clear positive correlation between emission and temperature. Dry wrack had lower emissions than wet. Using temperature data from 2016 to 2020, seasonal changes in fluxes were calculated for a natural wrack accumulation area. Such calculated average emissions were close to zero during winter, but peaked in summer, with very high emissions when daily temperatures exceeded 20 °C. We conclude that waterlogged beach wrack significantly contributes to greenhouse gas emissions and that emissions might drastically increase with increasing global temperatures. When beach wrack is collected into heaps away from the water, the emissions are however close to zero.
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Affiliation(s)
- Mats Björk
- Department of Ecology, Environment and Plant Sciences, Stockholm University, 106 91 Stockholm, Sweden
| | - Gunilla Rosenqvist
- Blue Centre Gotland, Uppsala University-Campus Gotland, 621 67 Visby, Sweden
| | - Fredrik Gröndahl
- KTH, Royale Institute of Technology, KTH Teknikringen 10B, Stockholm, Sweden
- Department of Sustainable Development, Environmental Science and Engineering, 100 44 Stockholm, Sweden
| | - Stefano Bonaglia
- Department of Marine Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden
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18
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Zhu Z, Wang Y, Han XY, Wang WH, Li HM, Yue ZQ, Chen W, Xue FR. Strengthen the purification of eutrophic water and improve the characteristics of sediment by functional ecological floating bed suspended calcium peroxide and sponge iron jointly. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116610. [PMID: 36323121 DOI: 10.1016/j.jenvman.2022.116610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 10/15/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
To overcome the shortcomings of conventional ecological floating bed (CEFB) in purifying landscape water, this study constructed a functional ecological floating bed (FEFB) through the suspension of calcium peroxide (CP) and sponge iron (SI) jointly below the CEFB. The purification effect of water quality and influence of sediment were compared in control check, CEFB, and FEFB systems, which were loaded the same sediment and reclaimed water in a field experiment. Results showed that the FEFB suspended with CP and SI had evident purification effect on the quality of landscape water supplied with reclaimed water and can maintain stably the nutrient status of the water body at mesotrophic levels and low turbidity. The FEFB promoted the degradation of humus, thus eliminating the chroma risk in water body caused by the decay of plants from the CEFB. Moreover, the FEFB can control the sediment mass produced, reduce the total nitrogen (TN) mass of sediment, and decrease the transformable TN (TTN) content in the sediment. The FEFB enhanced the stability of phosphorus (P) in the sediment, where the relative content of Ca-P and stable P reached 42.18% and 64.27%, respectively. To sum up, the FEFB suspended with SI and CP can not only effectively control the eutrophication and sensory index of landscape water but also change the TTN content and P forms in sediment, making the sediment more stable. Thus, the FEFB provides an innovative approach to reduce endogenous nutrient release for landscape water along with recharging with reclaimed water.
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Affiliation(s)
- Zheng Zhu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Yi Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Xue-Yi Han
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Wen-Huai Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Hao-Min Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Zi-Qi Yue
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Wei Chen
- Xi'an City Wall Management Committee, China.
| | - Fu-Rong Xue
- Xi'an City Wall Management Committee, China.
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19
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Lele CK, Oluba OM, Adeyemi OS. Impact of COVID-19 lockdown and health risk modeling of polycyclic aromatic hydrocarbons in Onne, Nigeria. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 195:166. [PMID: 36446906 PMCID: PMC9708509 DOI: 10.1007/s10661-022-10670-z] [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: 06/11/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
The people living in Onne are highly vulnerable to PAH exposure due to constant exposure to black soot through oral, dermal, and inhalation routes. This work aims to determine the PAHs profile of selected soils in Onne, to determine the health risks associated with PAHs exposure through the soil, and to determine the impact of reduced industrial and other activities on the PAHs profile and associated public health risks. This study evaluated 16 priority polycyclic aromatic hydrocarbon (PAHs) pollutants in soil samples from the four (4) major clans in Onne using a gas chromatography flame ionization detector (GC-FID) during and after the COVID-19 lockdown. The results showed a differential presence of PAHs during and after the lockdown. Of the 16 priority PAHs, 10 and 8 PAHs were respectively detected during and after the COVID-19 lockdown. High molecular weight PAHs such as benzo(k)fluoranthene and benzo(a)anthracene were major contributors during the lockdown, while low molecular weight PAHs such as naphthalene, acenaphthylene, and fluorene were present at higher levels after the lockdown. An assessment of health risk by incremental lifetime cancer risks revealed that the entire population of Onne might be at risk of cancer development across periods, though a higher risk was presented during the lockdown. In addition, children under the age of 18 may be at greater risk. To the best of our knowledge, there is no previous report on the impact of the COVID-19 lockdown on soil PAH profile and health risks, with particular attention to the Onne industrial host community. Earlier work considered the ecological risks of heavy metals on dumpsites in Onne. Taken together, the PAH-contaminated soil in Onne poses an immediate health concern. Therefore, reduced anthropological activities, as evident during the COVID-19 lockdown, may play a role in exposure and cancer risk reduction. While there may not be another lockdown due to the challenging impacts associated with a physical lockdown, firmly controlled economic activity can be a solution if embraced by stakeholders. The COVID-19-lockdown was encumbered with restricted movements and security checks, which limited the number of samples collected. However, the Local Government Council (Department of the Environment) granted permission for the researchers to work with a minimal threat to their lives.
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Affiliation(s)
- Charity Kelechi Lele
- Landmark University SDG 3 (Good Health & Well-Being Research Group), Landmark University, Omu-Aran, 251101, Kwara State, Nigeria
- Department of Biochemistry, Landmark University, Omu-Aran, 251101, Nigeria
| | - Olarewaju Michael Oluba
- Landmark University SDG 3 (Good Health & Well-Being Research Group), Landmark University, Omu-Aran, 251101, Kwara State, Nigeria.
- Department of Biochemistry, Landmark University, Omu-Aran, 251101, Nigeria.
| | - Oluyomi Stephen Adeyemi
- Landmark University SDG 3 (Good Health & Well-Being Research Group), Landmark University, Omu-Aran, 251101, Kwara State, Nigeria.
- Department of Biochemistry, Landmark University, Omu-Aran, 251101, Nigeria.
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Crocetti P, González-Camejo J, Li K, Foglia A, Eusebi AL, Fatone F. An overview of operations and processes for circular management of dredged sediments. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 146:20-35. [PMID: 35545007 DOI: 10.1016/j.wasman.2022.04.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/15/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
Dredging is an essential technique to maintain proper water depths in ports and bays. Many dredged sediments are considered as toxic waste due to their significant amounts of metals and other pollutants. In consequence, they need to be treated to reduce this toxicity and avoid pollutant resuspensions. Physical operations and chemical, thermal and biological processes have been conventionally used to this aim, but the traditional linear sediment approach is often unsustainable and economically and environmentally demanding. Considering the increasing people's awareness in environmental issues, more efficient dredged sediment management schemes are required. Some authors are making significant efforts to improve circularity in sediment management processes by taking advantage of the mineral composition of sediments to obtain products for the building and road construction sectors, therefore decreasing the need of raw materials while reducing the amounts of sediments wasted to landfills. However, information related to the characteristics of these products, their mechanical behaviour and their functionality is still scarce, being sediment-based by-products developed mainly at low Technological Readiness Level (TRL), showing low global impact in the market. To implement circular economy in the dredged sediment sector, some technical and socio-political barriers must be still overcome. To this aim, further research and technological applications must be developed, with the support of decision makers and stakeholders. This review aims at giving an overview of the circular trends applied to toxic dredged sediment management, pointing at current opportunities, barriers and constraints that hinder its wide development.
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Affiliation(s)
- P Crocetti
- Department of Science and Engineering of Materials, Environment and Urban Planning-SIMAU, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - J González-Camejo
- Department of Science and Engineering of Materials, Environment and Urban Planning-SIMAU, Università Politecnica delle Marche, 60131 Ancona, Italy; CALAGUA - Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient - IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - K Li
- Xi'an Technological University, Xuefuzhonglu Road, Weiyang District, Xi'an 710021, Shaanxi, China
| | - A Foglia
- Department of Science and Engineering of Materials, Environment and Urban Planning-SIMAU, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - A L Eusebi
- Department of Science and Engineering of Materials, Environment and Urban Planning-SIMAU, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - F Fatone
- Department of Science and Engineering of Materials, Environment and Urban Planning-SIMAU, Università Politecnica delle Marche, 60131 Ancona, Italy
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Ansari M, Farzadkia M. Beach debris quantity and composition around the world: A bibliometric and systematic review. MARINE POLLUTION BULLETIN 2022; 178:113637. [PMID: 35397342 DOI: 10.1016/j.marpolbul.2022.113637] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Anthropogenic pollution of marine ecosystems caused by beach debris has become a serious environmental concern in the last few decades. Regarding the raising production of beach debris, the present work aimed to summarize the quantity and quality of beach debris reported from different beach areas of the world. Also, a bibliometric analysis was used to analyze research trends and upgrade knowledge in this research area. Using Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA), the eligible papers reviewed regarding beach debris abundance along with their composition from 2010, which were extracted from the Scopus database. The results of the study showed that plastic items represented the dominant material (61.25%), followed by food (5.88%), wood (5.78%), metals (5.2%), and glass (5%). Further, the beaches studied were classified into three degrees, including highly polluted (31.5 items/m2), moderate polluted (3.47 items/m2), and low polluted (0.37 items/m2), based on the average abundance of debris.
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Affiliation(s)
- Mohsen Ansari
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
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