Co-composting as a Management Strategy for Posidonia oceanica Residues and Dredged Sediments

Peruzzi, Eleonora; Macci, Cristina; Doni, Serena; Zelari, Luca; Masciandaro, Grazia

doi:10.1007/s12649-019-00822-7

Cited by 15 publications

(6 citation statements)

References 52 publications

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“…Moreover, enzyme activities (Table 2) give a clear picture of the current state of microbial community metabolism, and about abundance and limitation of substrates/nutrients [41]. The values found for the starting materials and for the mixtures were in line with the values found by Masciandaro et al (2017) [42] and Peruzzi et al (2019) [43] for stabilized sludges and stable composts. Moreover, the values of β-glucosidase and butyrate esterase found in MIX1 and MIX3, reflected their stable status, being comparable to values reported for humus soils in a forest [44,45].…”

Section: Biological Stabilitysupporting

confidence: 80%

Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application

et al. 2020

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In order to obtain a product with agronomic characteristics and biological stability consistent with the EU fertilizer decree for the market of EU fertilising products three different mixtures obtained from sludge digestate from municipal wastewater treatment plant, fresh compost and mature compost have been studied and characterized. For the experimental activity, the raw samples and three mixing ones were collected for the analytical characterization. The biological stability was then assessed for all samples using different stability criteria such as Specific Oxygen Uptake Rate, Rottegrad self-heating factor, Residual biogas potential. Specific enzymatic tests provided information about the status of nutrient cycles (C, P and S) and to overall microbial activity. Physical (bulk density, particle density, air capacity and water content), nutritional (C, N, P, K, Mg, and Ca) and toxicological properties (seedling growth tests on Lepidum sativum L., Cucumis sativus L., Lolium perenne L.) were also evaluated in order to assess the feasibility of agronomic use of the digestate-based mixtures. All the digestate-based mixtures responded to the main characteristics of compost quality requirements proposed in national and international regulations. The evidence found in this study highlighted that the strategy of mixing of sludge digestates with the composts allowed to mitigate the environmental risk posed by each starting material and to valorize their nutrient content.

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Section: Biological Stabilitysupporting

confidence: 80%

Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application

et al. 2020

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“…The final results proved that the obtained compost has a good concentration of plant nutrients, no phytotoxicity and low heavy metal content, suggesting a safe use as an amendment in agriculture. 55,56 Aerobic-thermophilic composting was evaluated by Saidi et al 57 as the most reasonable way to take advantage of the organic matter in the lignocellulosic biomass of POW, collected from the beaches of Tunisia, for agricultural purposes. Mininni et al 58 prepared two composts named Cp20 and Cp60 from POW mixed with vine shoots and plant waste at rates between 20 and 60% on a fresh weight basis (Table 1).…”

Section: Valorization Of Pow For the Production Of Compostmentioning

confidence: 99%

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2024

BBIJ

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In the Mediterranean region, every summer the beaches have to be cleaned and millions of tons of Posidonia oceanica waste (POW) is often removed and not exploited. POW is mainly composed of fibrous materials consisting of cellulose and hemicellulose and lignin, as well as a significant percentage of ash and phenolic compounds. A solution to this ecological problem could be the valorization of this available and renewable biomass for the production of environmentally friendly industrial products. This mini-review focuses on the utilization of POW as a valuable biomass resource. In particular, seven POW valorization treatment approaches are discussed in this paper with a focus on bioenergy and biomaterials. The use of cleaner technologies can offer improved performance and an asset for contribution on sustainable POW management.

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“…Research has proven the potential of recycling dredged sediment in many applications related to the construction industry [36,56,94]. However, market demand appears to be lagging behind encouraging study results; the real beneficial reuse of dredged sediment is still very limited [95,96]. From a technical point of view, the identification of the appropriate path to valorize dredged sediment as construction material should be based on the study of its properties [56].…”

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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Co-composting as a Management Strategy for Posidonia oceanica Residues and Dredged Sediments

Cited by 15 publications

References 52 publications

Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application

Evaluation of MSW Compost and Digestate Mixtures for a Circular Economy Application

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Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material

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