The Reuse of Sediments Dredged from Artificial Reservoirs for Beach Nourishment: Technical and Economic Feasibility

Bagarani, Massimo; Vincenzo, Annamaria De; Ievoli, Corrado; Molino, Bruno

doi:10.3390/su12176820

Cited by 11 publications

(4 citation statements)

References 43 publications

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“…As the bridge which links dredging operations and extracted products management, the beneficial reuse of dredged sediment as construction material represents a concrete application of efficient waste management [63]. It allows for both a sustainable dredging disposal mechanism and the promotion of a waste-to-wealth approach [56,[64][65][66][67][68]. A number of studies have identified paths to valorize dredged material in the construction industry [59,69,70].…”

Section: Introductionmentioning

confidence: 99%

Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

et al. 2023

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An unprecedented rate of construction has profoundly increased the risk of scarcity of natural resources and threatened ecosystem sustainability. To establish an effective sustainable development policy, it is imperative to promote the use of responsible production channels, including waste recycling. Reuse of harbor dredged sediment is commonly investigated as a valuable alternative to non-renewable natural resources needed for construction. Sediment characterization is decisive in the valorization process, aiming to identify potential recycling paths. Existing research efforts, however, have rarely investigated case studies in developing countries. Moreover, they have tended to focus on the technical aspects, ignoring economic feasibility, which carries important implications. This paper fills this gap first by meticulously selecting laboratory tests for characterization within the means available in developing countries and second by conducting a cost-benefit analysis. The port of Safi, Morocco, was chosen for the implementation of the adopted approach. Results showed that dredged sediment is a sand readily reusable as a construction aggregate. Several applications are possible, the most interesting one being concrete works, as a substitute for conventional sand. While treatment by washing and dehydrating proved necessary, cost-benefit analysis confirmed the profitability of recycling. Hence, beneficial reuse of dredged sediment as construction material is technically and economically feasible.

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Section: Introductionmentioning

confidence: 99%

Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

et al. 2023

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“…The same method can be applied in the future to evaluate whether the solution to overcome reservoir siltation is economically viable or not. [17,18] assessed dredging sediment on the reservoir and catchment area based on an economic and technical perspective, namely the case study of Liscione Dam, Italy and the Nam Kong catchment area, Laos. Meanwhile, this study will focus on assessing sediment dredging based on technical and economic aspects in Mrica Dam, Indonesia.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Sediment Dredging Activities of the PB Soedirman Banjarnegara Hydroelectric Reservoir Based on a Technical and Economic Points of View

Waluyo¹,

Zaenurrohman²,

Piranti³

et al. 2022

Preprint

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The PB Sudirman hydroelectric power plant, built in 1988, has fewer than 50 years of operational life. In contrast, the planned operating life for this dam is 50 years. This dam is experiencing intensive sedimentation, which results in siltation. Dredging efforts and catchment area management are conducted to extend the operational life of the dam. Therefore, technical and economic analysis of dredging activities and the potential benefits of dredged sediment is needed to determine the solution's effectiveness. We use the site survey method to conduct an environmental impact analysis and interviews with dam managers. The identification of the extent and distribution of erosion-sedimentation was carried out as part of the technical assessment. In the economic study, we calculate the dredging costs and profits from selling dredged sediments, mainly sand. The analysis results show that the dredging of deposits in the foreset slope area is not profitable. There are 17 areas of bank spoil that have economic benefits. This study concludes that the need for dredging costs on foreset slopes is higher than the profit from selling dredging sediments.

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“…This research aims to determine some chemical-physical parameters of fine clay suspensions taken from an Italian reservoir (Camastra, Potenza). Furthermore, the properties of the sedimentation process are also studied in order to extract useful information for a correct planning and management of the reservoir removal operations [11,12].…”

Section: Introductionmentioning

confidence: 99%

Settling Analyses and Investigations of Clayey Sediments to Storage in Geotubes

Perna

Vincenzo

Nunzio³

et al. 2021

Sustainability

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Understanding the sedimentation behaviour and chemical–physical properties of clay sediments is crucial in planning their storage in geotubes. Analysis of the sedimentation curves of the solids taken from the artificial reservoir of the Camastra reveal that a two-parameter curve identifies all the sedimentation profiles. One parameter depends on the type of settling material, and the other is the lifetime of the process. Using the solid concentration per unit area, the lifetime is converted into a true kinetic constant. These parameters uniquely identify the sedimentation profile to be used in the management of dredging using geotubes. Furthermore, the resulting particles after the decantation of the coarse-grained solids are dispersed according to a log-normal distribution with an average diameter between 250 and 500 nm. The low ζ-potential of the particles dispersed in the supernatant indicates that they can either aggregate or adsorb to the geotube tissue, slowing or blocking the dredging operations.

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The Reuse of Sediments Dredged from Artificial Reservoirs for Beach Nourishment: Technical and Economic Feasibility

Cited by 11 publications

References 43 publications

Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

Analysis of the Sediment Dredging Activities of the PB Soedirman Banjarnegara Hydroelectric Reservoir Based on a Technical and Economic Points of View

Settling Analyses and Investigations of Clayey Sediments to Storage in Geotubes

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