Effect of the mixing ratio on the composting of OFMSW digestate: assessment of compost quality

Núñez, Fabián; Pérez, Montserrat; Leon-Fernández, Luis Fernando; García‐Morales, J.L.; Fernández-Morales, Francisco Jesús

doi:10.1007/s10163-022-01438-1

Cited by 14 publications

(6 citation statements)

References 53 publications

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“…The compliance of all the parameters, including heavy metals contents with Italian Law and EU Regulations has been verified [ 8 , 24 ]. The analysis of biological stability during aerobic treatment of the OFMSW digestate confirms the results of previous works [ 25 , 26 ].…”

Section: Discussionsupporting

confidence: 90%

“…The digestate obtained from OFMSW anaerobic digestion contains mineral nitrogen, and microelements could have a role as fertilizers for plant growth. Its composting allows for overcoming the issues regards the health risks for animals and humans, removing the presence of phytotoxic biological compounds and improving its handling [ 25 ]. The treatment of OFMSW through anaerobic digestion, prior to composting, has a more beneficial effect on the environment than direct composting of the OFMSW [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

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Matured Manure and Compost from the Organic Fraction of Solid Waste Digestate Application in Intensive Apple Orchards

Bona¹,

Cristoforetti²,

Zanzotti³

et al. 2022

IJERPH

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In intensive fruit growing systems, the recovery and maintenance of soil fertility play a crucial role in both environmental protection and sustainable support to plant productivity. The circular economy approach adopted at the EU level strongly promotes the use of organic products instead of mineral fertilizers. This work focuses on two different soil improvers, compost from the organic fraction of municipal solid waste digestate (CO) and “matured” manure, produced after a fast and controlled aerobic treatment in an aerated pile (MM), which were applied in three apple orchards with different soil tillage. The soil improvers have been characterized for amendment and fertilizing properties. After the amendment, the soils were sampled twice a year (Spring and Autumn) for three years. Each sample has been characterized for texture, pH, cation exchange capacity, nutrients, soil organic matter, and micronutrients. The amendments obtained differed on C, N, P, and K contents, but had similar biological stability. The main effects on soils were the increasing of N and soil organic matter after compost application, while the use of matured manure mainly act on available P and exchangeable K. The treatments showed significant effects among fields with a linear increasing trend only for compost. Matured manure showed more effects in earlier times. The data collected aim to improve the knowledge about sustainable management of soil organic matter and organic nutrients in intensive fruit-growing agriculture by using local products.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Matured Manure and Compost from the Organic Fraction of Solid Waste Digestate Application in Intensive Apple Orchards

Bona¹,

Cristoforetti²,

Zanzotti³

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…Measurements of four-day respirometric activity (AT4) are commonly used to assess the biological stability of waste [59][60][61]. This measurement is an indicator of both microbial activity and the bioavailability of organic compounds.…”

Section: Behaviour Of the Composting Processmentioning

confidence: 99%

Risk of Mycotoxin Contamination in Thermophilic Composting of Kitchen and Garden Waste at Large-Scale

Woźny,

Kasiński,

Obremski

et al. 2024

Applied Sciences

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Although toxicogenic moulds have been identified in municipal waste and composting facilities, only a few reports exist on the occurrence of mycotoxins in compost. Those reports mostly concern sewage sludge as a substrate, tested only a limited range of mycotoxins, and did not monitor the production of mycotoxins during the composting process. Therefore, this study aimed to investigate whether mycotoxins are produced during composting of selectively collected kitchen and garden waste. The study was carried out at pilot scale (550 L reactor with passive aeration). Kitchen waste (59.0% w/w), garden leaves (28.2%), and wood chips (12.8%) were used as a substrate, which was sampled every five days to determine its basic physicochemical characteristics (temperature, moisture, size-fraction content, loss on ignition) and respirometric activity (AT4). The substrate and leachate samples were also tested for the content of eight mycotoxins by HPLC-MS/MS. To screen the local compost market, commercial organic-compost samples were analysed for mycotoxin contamination. The substrate was successfully stabilized after 45 days (thermophilic peak of 62.6 °C, 40.4% mass reduction, 26.9% loss of organic matter, increase in the share of particles in the smallest size fraction, AT4 of 9.82 g O2/kg). Although the substrate was colonised by moulds at an early stage, only trace amounts of mycotoxins were detected in a few samples. Similarly, little or no mycotoxins were found in the commercial compost. Our results suggest a low risk of mycotoxin contamination in biowaste compost produced under appropriate technological conditions. Future research should focus on screening compost produced at smaller scales (e.g., in agricultural/residential compost piles) and on identifying factors associated with the risk of mycotoxin contamination in compost.

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“…Composting has been evaluated as a suitable way for valorizing digestate and increasing the quality of the organic material [81,82]. Mineralization attained during aerobic conversion reduces the volatile solid content and modifies the chemical characteristics of the organic matter [83,84]. However, the land requirements for a composting treatment plant are high, and the search for a market is necessary to attain the commercialization of the end product.…”

Section: A Practical Solution Is Necessary To Finally Dispose Of the ...mentioning

confidence: 99%

Decentralized Biogas Production in Urban Areas: Studying the Feasibility of Using High-Efficiency Engines

González,

García-Cascallana,

Gutiérrez-Bravo

et al. 2023

Eng

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The study examines decentralized waste treatment in an urban setting with a high-density population of 2500 inhab./km2. The co-digestion of food and garden waste was assumed by using several mid-size digesters, while centralized biogas and digestate valorization was considered. The studied configuration generates electricity and thermal energy, covering 1.3% of the residential electricity demand and 3.2% of thermal demand. The use of double-turbocharged engines under the most favorable scenario aids cities in reaching sustainability goals. However, the location of treatment plants is a factor that may raise social discomfort and cause a nuisance to citizens. Locating waste plants near residential areas causes discomfort due to possible odors, gaseous emissions, and housing market distortions. Such problematic aspects must be addressed for the decentralized alternative to work. These factors are of great relevance and must be given a practical solution if the circular economic model is to be implemented by considering the insertion of waste streams into the production system and generating local energy sources and raw materials.

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Effect of the mixing ratio on the composting of OFMSW digestate: assessment of compost quality

Cited by 14 publications

References 53 publications

Matured Manure and Compost from the Organic Fraction of Solid Waste Digestate Application in Intensive Apple Orchards

Matured Manure and Compost from the Organic Fraction of Solid Waste Digestate Application in Intensive Apple Orchards

Risk of Mycotoxin Contamination in Thermophilic Composting of Kitchen and Garden Waste at Large-Scale

Decentralized Biogas Production in Urban Areas: Studying the Feasibility of Using High-Efficiency Engines

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