Storage potential and residual emissions from fresh and stabilized waste samples from a landfill simulation experiment

Morello, Luca; Raga, Roberto; Sgarbossa, Paolo; Rosson, Egle; Cossu, Raffaello

doi:10.1016/j.wasman.2018.01.026

Cited by 8 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The waste material was characterized by high percentages of undersieve 20 mm, inert, plastic, paper and small percentages of aggregates, textiles, wood and metals, as shown in Table 1. From previous experiences this composition can be considered typical of waste coming from old landfills (Morello et al, 2018; Raga and Cossu, 2014).…”

Section: Methodsmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Methodsmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…The former was analyzed immediately after collection, the latter was aerated for a long time in a lysimeter reactor. The lysimeter was a 300 mm diameter column with a total volume of 2 m 3 , built for simulation enabling natural air circulation [40].…”

Section: Application Of Lysimeter To Simulate Different Landfill Conditions and Gas Productionmentioning

confidence: 99%

A Review of Lysimeter Experiments Carried Out on Municipal Landfill Waste

Dąbrowska

Rykała

2021

Toxics

View full text Add to dashboard Cite

The groundwater risk assessment in the vicinity of landfill sites requires, among others, representative monitoring and testing for pollutants leaching from the waste. Lysimeter studies can serve as an example of dynamic leaching tests. However, due to the bacteriological composition of the municipal waste, they are rarely carried out. These tests allow for the proper design of the landfill protection system against migration of pollutants into the ground, assessment of bacteriological, biochemical and chemical risk for the groundwater, determination of the water balance of leachate as well as examination of the course of processes taking place in the waste landfill with a diversified access to oxygen. This paper addresses the issue of performing lysimeter studies on a sample of municipal waste in various scientific centers. It analyzes the size of lysimeters, their construction, the method of water supply, the duration of the experiment, the scope of research, and the purpose of lysimeter studies.

show abstract

“…digestate, fibre fractions or contaminants) and the environmental implications of their management and final disposal. An important aspect is the potential effects associated with carbon or metals sink options (Morello et al, 2018), and the risk of spreading micro-pollutants or microplastics (Butkovskyi et al, 2016).…”

Section: Environmental Sustainabilitymentioning

confidence: 99%