Leachate purification of mechanically sorted organic waste in a simulated bioreactor landfill

Maria, Francesco Di; Micale, Caterina; Sordi, Alessio; Cirulli, Giuseppe

doi:10.1177/0734242x13495103

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…Finally, it is worth mentioning that the cumulative decrease ratio (CDR %) of organic matter, defined as the percentage reduction in the concentration of organic matter (expressed as COD, BOD 5 , TOC, etc.) at the given day with respect to the initial one, appears to be lower with respect to other experiments (Bilgili et al, 2012; Cossu et al, 2003; Di Maria et al, 2013; Yang et al, 2012) in which different combinations of treatment (aerobic aeration and leachate recirculation) were applied to increase the biological stability of the waste. In these works, the CDR % for COD and BOD 5 at the end of the simulated time was measured higher than 50% and 85%, respectively.…”

Section: Resultscontrasting

confidence: 60%

Mitigating long-term emissions of landfill aftercare: Preliminary results from experiments combining microbial electrochemical technologies and in situ aeration

Pivato¹,

Raga²,

Marzorati³

et al. 2021

Waste Manag Res

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Landfills still represent the main option for waste disposal in many parts of the world. Anyway, they often pose a significant pollution risk and contribute to potential environmental and human health impacts via gaseous and liquid (leachate) emission pathways if not properly managed. Some innovative technologies can help to reduce these emissions, such as in situ aeration and the application of microbial electrochemical technologies (METs). METs are an emerging field that open the possibility to control microbial reactions, enhancing electron flows from electron donors towards electron acceptors. To this end, several materials with different electrochemically-active properties are used, such as electrical conductivity, capacitance, surface electroactivity and charge. The present project named LA-LA-LAND (Landfill electron-Lapping for a LANDscape requalification) was aimed to apply METs to treat leachate-saturated zones in old landfills. A MET prototype was constructed using a granular anode (graphite) and a cylindrical air-cathode (electroactive biochar). The METs were integrated to three identical laboratory-scale landfill bioreactors coupled with the in situ aeration technique, while three control reactors run without MET. The maximum values of current and power density obtained were 0.015 A·m−2 and 0.00035 W·m−2. The influence of the MET system on the organic matter removal was evident in two reactors, where this technology was applied, with respect to the control ones: total organic carbon decreased on average 13%, while it reduced less than 5% in the control reactors. This preliminary experiment pointed out some critical aspects of MET configuration, such as the weakness of the cathode architecture, which was prone to be flooded by leachate, blocking the aeration flux.

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Section: Resultscontrasting

confidence: 60%

Mitigating long-term emissions of landfill aftercare: Preliminary results from experiments combining microbial electrochemical technologies and in situ aeration

Pivato¹,

Raga²,

Marzorati³

et al. 2021

Waste Manag Res

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“…The amount of LFG generated by the MSOF disposed of in the bioreactor landfill was evaluated using an experimental apparatus (Fig. 4) (Di Maria et al, 2013c).…”

Section: Waste Treatment and Bioreactor Landfillmentioning

confidence: 99%

Improvement of the management of residual waste in areas without thermal treatment facilities: A life cycle analysis of an Italian management district

Maria¹,

Micale²,

Morettini³

et al. 2015

Waste Management

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Life cycle analysis of management options for organic waste collected in an urban area

Maria

Micale

2014

Environ Sci Pollut Res

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Different options for managing the organic fraction (OF) of municipal solid waste generated in a given urban area were analyzed by life cycle assessment (LCA) for different source segregation (SS) intensities ranging from 0 to 52%. The best management option for processing the OF remaining in the residual organic fraction (ROF) for the different SS intensities was by incineration. Landfilling and mechanical biological treatment (MBT) of ROF gave higher impacts. Aerobic treatment alone or combined with anaerobic digestion (AD) for processing the source-segregated organic fraction (SSOF) led to relevant environmental impact reduction even if the difference between the two options was quite negligible. The weighted impact showed that scenarios using incineration always gave environmental gains, whereas there was a higher environmental burden with the scenarios using MBT.

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Leachate purification of mechanically sorted organic waste in a simulated bioreactor landfill

Cited by 13 publications

References 16 publications

Mitigating long-term emissions of landfill aftercare: Preliminary results from experiments combining microbial electrochemical technologies and in situ aeration

Mitigating long-term emissions of landfill aftercare: Preliminary results from experiments combining microbial electrochemical technologies and in situ aeration

Improvement of the management of residual waste in areas without thermal treatment facilities: A life cycle analysis of an Italian management district

Life cycle analysis of management options for organic waste collected in an urban area

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