Influence of input material and operational performance on the physical and chemical properties of MSW compost

Montejo, C.; Costa, Carlos; Márquez, M. Carmen

doi:10.1016/j.jenvman.2015.07.059

Cited by 34 publications

(19 citation statements)

References 26 publications

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“…The high nutrient concentration, in line with values reported by Montejo and collaborators (2015) [67] for municipal sludge compost, also confirmed the fertilizing potential of digestate-based mixture for the agricultural sector (Table 5). This result was expected, given that the anaerobic digestion technology is considered one of the most effective technologies to recover nutrients from the input material, namely sewage sludges, that can be utilized as fertilizer [68].…”

Section: Digestate-based Mixtures Quality Evaluation For Land Applicasupporting

confidence: 88%

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: Digestate-based Mixtures Quality Evaluation For Land Applicasupporting

confidence: 88%

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

et al. 2020

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“…In several other papers, it is agreed that source-separated biodegradable waste can mitigate several environmental challenges and also reduce variation in waste segregation; however, this may not be reported for mechanically separated compost. These authors [41] worked on 30 different compost biodegradable samples from ten mechanical (biological) treatment plants enhanced with capacities of 25,400-210,000 tons/year. It was found out that the level of concentration of nickel (Ni), chromium (Cr), Cu, cadmium (Cd), and mercury (Hg) in most compost products were below the agreeable legal restrictions.…”

Section: Life Cycle Assessment (Lca) Of Biodegradable Materials and Tmentioning

confidence: 99%

Bio-based and Biodegradable Plastic Materials: Life Cycle Assessment

Adekomaya

Majozi

Adedoyin

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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The involvement of bio-based and biodegradable materials in material formations is meant to foster cradle-to-grave life cycle assessment (LCA) with minimal or zero impact on the environment. Life cycle assessment of bio-based materials is crucial in the long-term sustainability of materials taking into consideration future reclamation and degradable components of materials. Application of materials in structural and part formation has been expanded to accommodate bio-based and

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“…Thus, AD is commonly employed as a method that provides the environmental benefits of reducing sludge, to generate biogas but also to supply simple carbon compounds for denitrification [26]. The only digestate characterized by lower VS/TS ratio was the OFMSW one (59.9%), as consequence of its composition including plastic or glass fragments (< 2 mm), from bags used to collect wastes or improperly introduced by people [27].…”

Section: Ph Ts and Vs Concentrationsmentioning

confidence: 99%

Exploitation of Solar Energy for Ammonium Sulfate Recovery from Anaerobic Digestate of Different Origin

Battısta

Bolzonella

2019

Waste Biomass Valor

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Digestate represents the semi-liquid byproduct of the anaerobic digestion process. It was estimated that 56 Mtonnes of digestate are annually produced only in Europe. Digestate composition depends on the initial total solids (TS) mixture fed to the digester and by its origin (manure, food wastes, agricultural residues, wastewater sludge). Typical values for the different components include a stabilized organic matter content between 20 and 50 g/L, a good content of nitrogen compounds (2-8 g/kg) and of phosphorous compounds (up to 3 g/kg). In particular, ammonia presence in digestate is interesting for ammonium sulfate production, a fertilizer which favors plants' growth. Traditional ammonium sulfate synthesis is conducted by stripping followed by sulfuric acid absorption, a process which requires high energy and chemicals consumptions. This work investigates the exploitation of solar energy to evaporate the liquid phase of digestate in a lab-scale greenhouse. Digestate vapors, rich in ammonia, are sent in a Drechsler trap, filled with 38% w/w sulfuric acid solution, through three solar air fans. The process has been tested on digestates differing for TS content and origin. It emerged that the process is favored by digestates with high ammonia content, as those originated from manure, and a TS content of about 10% w/w, which allowed to obtain an ammonium sulfate concentration of about 2 M in the final solution. Statement of NoveltyTraditional ammonium sulfate production from digestate requires a previous solid/liquid separation, further polishing of the liquid phase, followed by stripping and absorption in a sulfuric acid solution. This process is characterized by high energy consumption to heat the digestate and by high reagents consumption. This work proposes an innovative and an environmental sustainable way for the ammonium sulfate recovery from digestate, without a previous solid/ liquid separation. In particular, solar energy is exploited to dry the digestate and to recover ammonia vapors, which are sent to a trap containing H 2 SO 4 to allow the ammonium sulfate production.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Influence of input material and operational performance on the physical and chemical properties of MSW compost

Cited by 34 publications

References 26 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

Bio-based and Biodegradable Plastic Materials: Life Cycle Assessment

Exploitation of Solar Energy for Ammonium Sulfate Recovery from Anaerobic Digestate of Different Origin

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