Optimization of landfill Gas Use in Municipal Solid Waste Landfills in Latvia

Dāce, Elīna; Blumberga, Dagnija; Kuplais, Ģirts; Bozko, Larissa; Khabdullina, Zauresh; Khabdullin, Aset

doi:10.1016/j.egypro.2015.06.042

Cited by 22 publications

(6 citation statements)

References 8 publications

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“…The problem of waste sorting in Latvia has been actively studied in the published works of other researchers. Much attention has been paid to the problem of construction waste [40], waste processing into energy [41][42][43], waste composition [44], and waste management technologies [45]. The issues of behavior of the population towards waste sorting was studied in such research as [46][47][48][49].…”

Section: Literature Reviewmentioning

confidence: 99%

Decision-Making within Smart City: Waste Sorting

Popova

Sproģe

2021

Sustainability

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The concept of the Smart City is the answer for the majority of the challenges of an increased rate of urbanization. However, the implementation of the ideas of the Smart City faces some difficulties. It is a necessity to correspond to the sustainability pillars and the decisive role of the population in all processes, and correspondently the necessity to comprehend what factors influence the decision-making process. The research goal of this paper is to analyze the factors determining the decision of the population of multi- and one-family houses to sort waste. The data were collected via population survey of the Vidusdaugavas region of Latvia and semi-structured interviews of municipal councils’ representatives. Both parties—population and authorities—have mentioned the existence of more negative factors of waste sorting in their life than positive ones. For authorities, the most important externalities of waste sorting have an economic nature, while, for citizens, the factors of convenience are not less important than costs. The problem was considered from the position of municipal authorities and the local population, and the identification of problems and misunderstanding is a possibility to start effective communication between the two parties. Moreover, the analysis of the literature has shown that Scandinavian countries and west European countries, which started their way towards implementing smart sustainable cities significantly earlier than Latvia, had the same stages. The most important factor for constructing a smart sustainable city is the changing the way of thinking of population.

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Section: Literature Reviewmentioning

confidence: 99%

Decision-Making within Smart City: Waste Sorting

Popova

Sproģe

2021

Sustainability

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“…The hydrolysis or aerobic degradation stage initiates as the waste is placed, and the aerobic micro-organisms degradation capabilities depend on the waste oxygen content. The carbon dioxide (CO2) produced from this stage is either released as a gas, or absorbed in the water that is produced, and the amount of carbon dioxide that is absorbed causes the leachate to be acidic [5,23]. The hydrolysis and fermentation stage initiates as the oxygen is consumed-from the previous stage, which in turn conditions to anaerobic conditions.…”

Section: Introductionmentioning

confidence: 99%

Biogas Production From Waste in a Sanitary Landfill Reactor

Aldrawsha

Ismail

Rajamohan

et al. 2020

Journal of Thermal Engineering

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In this research study, the feasibility of waste to biogas conversion in a sanitary landfill unit was investigated. The academic work was about quantifying the methane emission values during the wet season, by applying the FOD method on a static flux chamber and a pilot-scale sanitary landfill, and the methane emission potential table was established. The study was conducted for a period of 16 weeks from November 2018 to February 2019. The waste used in the pilot-scale sanitary landfill included food and cattle waste. It was observed that the methane emission rate peaked at 0.25 g/m 2 .d during week 10 and decreased to 0.12 g/m 2 .d during week 16. In addition, the carbon dioxide concentration obtained was 45% during the anaerobic phases and around 50% during the aerobic phases. The academic work studied the contribution of leachate pH, waste moisture content, and gas temperature to change methane emission values. The waste moisture content proved to have a direct relationship with the methane emission values, unlike the gas temperature. The leachate pH value during week 10/5 th test day was found to be 7.92, and increased steadily throughout the remaining study period, even though the methane emission values decreased during that period (after week 10/5 th test day).It was observed that the leachate recirculation process decreased the leachate content even though it affected the methane emission values.

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“…The current population explosion has not only increased the demand for energy (1), but it has also increased the demand for clean environment and waste management, therefore, making policy on energy and waste management can be considered as a conjoined twins (2,3). Energy experts and researchers believe that wastes should not only be seen as a raw material for petrochemical industry, but it must also be considered as raw materials for energy plants -biomass and landfill gas (LFG) plants (4). Discussions on the latter are still on-going and a lot of people believe that with adequate information, the nightmare of waste management will become history, and that compensation of energy shortage will be experienced as another benefit of co-analysis of waste and energy problems.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of landfill gas plant siting problem: a multi-criteria approach

Ighravwe

Babatunde

2019

Environ Health Eng Manag

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Background: Landfill activities have environmental and economic values to a community. While the former deals with the control of landfill gas (LFG) emission into the atmosphere, the latter deals with the conversion of LFG to clean energy and subsequently, wealth creation. To fully harness these benefits, LFG plants must be well sited in a community, and this can be achieved when proper techno-economic analysis has been carried out. This will not only justify the LFG plants investment cost, but it will also guarantee their sustainability. Methods: This study presented a framework that ranks and selects LFG project for a community. First, numerical expressions were used to evaluate the techno-economic and environmental requirements of the project sites, then, the importance of these requirements was determined using Criteria Importance Through Inter-criteria Correlation (CRITIC) method. The sites were ranked using grey relational analysis (GRA) and Weighted Aggregated Sum-Product Assessment (WASPAS) method. An illustrative example of the proposed framework was presented using real-world dataset from different communities in Nigeria. Finally, four LFG project sites were ranked using four environmental criteria, five technical criteria, and eight economic criteria. Results: The results of WASPAS were verified by comparing them with the results of Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and axiomatic design (AD) methods. It was observed that the results of both methods were the same for the different LFG sites. Conclusion: According to the results, it is obvious that this study will be useful to policy-makers and investors in LFG business, while the former could seek for plants’ sustainability, the latter interest will be on the payback period of their investment.

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Optimization of landfill Gas Use in Municipal Solid Waste Landfills in Latvia

Cited by 22 publications

References 8 publications

Decision-Making within Smart City: Waste Sorting

Decision-Making within Smart City: Waste Sorting

Biogas Production From Waste in a Sanitary Landfill Reactor

Evaluation of landfill gas plant siting problem: a multi-criteria approach

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