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The development of the circular economy of mineral solid wastes implies searching for new treatment methods to guaranty their chemical quality and technical properties. The aim of this study is to use mineral solid wastes including dredged sediments (SED), construction and demolition waste (CDW), and municipal solid waste from incinerator (MSWI) to obtain backfill road materials. Granular mixtures were prepared using Talbot-Fuller-Thompson curves to optimize their packing density. Then, these road materials were submitted to geotechnical, mechanical, and environmental analyses to validate their conformity. The results highlighted that the partial substitution of sand by CDW and MSWI seems to be the best option to enhance the mechanical properties of road materials. The replacement of sand by ternary mixtures of SED, CDW, and MSWI allowed obtaining acceptable road materials without resorting to any treatments. Equilibrium batch leaching tests performed on road materials revealed that the behavior of Ba, Cr, Cu, Sb, and Zn is mainly related to raw material properties i.e. pH, mineralogy, and pollutant contents. This study highlights the opportunity to replace natural aggregates with a wide variety of mineral solid wastes. However, it is recommended to pay attention to the modification of leaching behaviors of wastes after treatment and formulation.
Zeinab Mkahal; Yannick Mamindy-Pajany; Walid Maherzii; Nor-Edine Abriak. Recycling of Mineral Solid Wastes in Backfill Road Materials: Technical and Environmental Investigations. Waste and Biomass Valorization 2021, 1 -21.
AMA StyleZeinab Mkahal, Yannick Mamindy-Pajany, Walid Maherzii, Nor-Edine Abriak. Recycling of Mineral Solid Wastes in Backfill Road Materials: Technical and Environmental Investigations. Waste and Biomass Valorization. 2021; ():1-21.
Chicago/Turabian StyleZeinab Mkahal; Yannick Mamindy-Pajany; Walid Maherzii; Nor-Edine Abriak. 2021. "Recycling of Mineral Solid Wastes in Backfill Road Materials: Technical and Environmental Investigations." Waste and Biomass Valorization , no. : 1-21.
In this study, the biosurfactant–enhanced electrokinetic method was investigated for the removal of potentially toxic trace elements (As, Ba, Cd, Cr, Cu, Mo, Ni, Pb, Sb, Se and Zn) in waterways sediments. The effect of this method was compared to the removal capacities of deionised water in the same conditions in order to assess its efficiency. After treatment, batch leaching tests have shown that almost toxic elements (As: 81.3%; Ba: 80%; Cr: 97.3%; Cu: 82%; Zn: 94.5%; Mo: 13.8%; Ni: 62.7%; Se: 66.8% and Sb: 9.3%) were less released in waters. On the whole sediment samples, Ba and Cd displayed the highest removal rates (Ba: 71.2% and Cd: 77.5%). The use of biosurfactant enhanced the electrokinetic method by improving the trace elements migration and altering pH and Eh locally generated by the system. Overall, the application of this new approach dredged sediments seems to be promising but needed further investigations for industrial applications. GRAPHICAL ABSTRACT
Mathilde Betremieux; Yannick Mamindy-Pajany. Investigation of a biosurfactant-enhanced electrokinetic method and its effect on the potentially toxic trace elements in waterways sediments. Environmental Technology 2021, 1 -18.
AMA StyleMathilde Betremieux, Yannick Mamindy-Pajany. Investigation of a biosurfactant-enhanced electrokinetic method and its effect on the potentially toxic trace elements in waterways sediments. Environmental Technology. 2021; ():1-18.
Chicago/Turabian StyleMathilde Betremieux; Yannick Mamindy-Pajany. 2021. "Investigation of a biosurfactant-enhanced electrokinetic method and its effect on the potentially toxic trace elements in waterways sediments." Environmental Technology , no. : 1-18.
Few studies focus on the co-valorization of river dredging sediments (DS) and residual waste glass (RWG) in alkali-activated binders. This study investigates the use of DS as an aluminosilicate source by substituting a natural resource (metakaolin (MK)), while using RWG as an activator (sodium silicate source). Suitable treatments are selected to increase the potential reactivity of each residue. The DS is thermally treated at 750 °C to promote limestone and aluminosilicate clays’ activation. The RWG (amorphous, rich in silicon, and containing sodium) is used as an alkaline activator after treatment in 10 M NaOH. Structural monitoring using nuclear magnetic resonance (29NMR and 27NMR), X-ray diffraction, and leaching is conducted to achieve processing optimization. In the second stage, mortars were prepared and characterized by determining compressive strength, water absorption, mercury porosimetry and Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS). Results obtained show the great advantage of combining RWG and DS in an alkali-activation binder. The treated RWG offers advantages when used as sodium silicate activating solution, while the substitution of MK by calcined sediments (DS-750 °C) at 10%, 20%, and 30% leads to improvements in the properties of the matrix such as an increase in compressive strength and a refinement and reduction of the pore size within the matrix.
Abdelhadi Bouchikhi; Walid Maherzi; Mahfoud Benzerzour; Yannick Mamindy-Pajany; Arne Peys; Nor-Edine Abriak. Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale. Sustainability 2021, 13, 4960 .
AMA StyleAbdelhadi Bouchikhi, Walid Maherzi, Mahfoud Benzerzour, Yannick Mamindy-Pajany, Arne Peys, Nor-Edine Abriak. Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale. Sustainability. 2021; 13 (9):4960.
Chicago/Turabian StyleAbdelhadi Bouchikhi; Walid Maherzi; Mahfoud Benzerzour; Yannick Mamindy-Pajany; Arne Peys; Nor-Edine Abriak. 2021. "Manufacturing of Low-Carbon Binders Using Waste Glass and Dredged Sediments: Formulation and Performance Assessment at Laboratory Scale." Sustainability 13, no. 9: 4960.
To maintain their economic activities, inland ports, rivers, and canals have to be dredged. In the French legislation, dredged sediments have to be managed onshore when their environmental characteristics, i.e., trace elements and organic concentrations, are of major concern. In this case, dredged sediments are considered as waste and their reuse as secondary aggregates is allowed under some conditions. These conditions include checking the sediment is not hazardous and the new product will not cause environmental and sanitary risks. In this context, the European Union Ecolabel framework established environmental, technical, and economic criteria for waste reuse as growing media for plants. In this research, dredged sediments from French waterways were reused as aggregates in the preparation of plant growing media according to the rules of E.U ECOLABEL. Given their organic matter and nutrient contents, dredged sediments are relevant for manufacturing this kind of products. The addition of composted green waste residues followed by sufficient tillage time allowed obtaining growing media in compliance with ecolabel for storage facilities reclamation. Also, besides the agronomic parameters, environmental characteristics of final products were studied through leaching tests in order to check their conformity.
Marie Lemay; Yannick Mamindy-Pajany; Nor-Edine Abriak; Afef Zouch; Mohamed Ksibi. Storage Facilities Reclamation Using Dredged Sediments from Waterways: Growing Media Formulation for Plants According to E.U ECOLABEL Framework. Environmental Science and Engineering 2021, 643 -648.
AMA StyleMarie Lemay, Yannick Mamindy-Pajany, Nor-Edine Abriak, Afef Zouch, Mohamed Ksibi. Storage Facilities Reclamation Using Dredged Sediments from Waterways: Growing Media Formulation for Plants According to E.U ECOLABEL Framework. Environmental Science and Engineering. 2021; ():643-648.
Chicago/Turabian StyleMarie Lemay; Yannick Mamindy-Pajany; Nor-Edine Abriak; Afef Zouch; Mohamed Ksibi. 2021. "Storage Facilities Reclamation Using Dredged Sediments from Waterways: Growing Media Formulation for Plants According to E.U ECOLABEL Framework." Environmental Science and Engineering , no. : 643-648.
The management of dredging sediments and plastic waste is of increasing environmental, societal, and economic importance. To address this, we produced lightweight aggregates composed of 70% sediment based mineral filler and 30% thermoplastic waste containing polypropylene, polyethylene, and polystyrene. When tested, the aggregates satisfied the requirements of the European Standard EN 13055-1 for lightweight aggregates and exhibited good mechanical properties and low water absorption compared to natural aggregates. Based on these results, the formulated lightweight aggregates were found to be suitable for use as a partial replacement for up to 30% of the natural sand in mortar formulations.
İlyas Ennahal; Walid Maherzi; Mahfoud Benzerzour; Yannick Mamindy; Nor-Edine Abriak. Performance of Lightweight Aggregates Comprised of Sediments and Thermoplastic Waste. Waste and Biomass Valorization 2020, 12, 515 -530.
AMA Styleİlyas Ennahal, Walid Maherzi, Mahfoud Benzerzour, Yannick Mamindy, Nor-Edine Abriak. Performance of Lightweight Aggregates Comprised of Sediments and Thermoplastic Waste. Waste and Biomass Valorization. 2020; 12 (1):515-530.
Chicago/Turabian Styleİlyas Ennahal; Walid Maherzi; Mahfoud Benzerzour; Yannick Mamindy; Nor-Edine Abriak. 2020. "Performance of Lightweight Aggregates Comprised of Sediments and Thermoplastic Waste." Waste and Biomass Valorization 12, no. 1: 515-530.