Bioreactor Landfills: Comparison and Kinetics of the Different Systems

Grossule, Valentina; Morello, Luca; Cossu, Raffaello; Lavagnolo, Maria Cristina

doi:10.31025/2611-4135/2018.13703

Cited by 14 publications

(7 citation statements)

References 75 publications

(155 reference statements)

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“…Furthermore, bioreactor landfills and their variations represent a sustainable alternative approach to conventional sanitary (dry tomb) landfills [52]. However, bioreactors can have drawbacks, e.g., odours and physical instability of the waste material due to increased moisture [53].…”

Section: Bioreactor Landfillsmentioning

confidence: 99%

“…Moreover, establishment of infrastructure for leachate recirculation and/or aeration may cause increased capital and operational costs [53]. Studies have suggested that the high upfront costs involved in operation and construction of bioreactor landfills can be balanced by future economic benefits, including an increase in the active life of the landfill (waste disposal period), more efficient use of airspace [54], lower minimum leachate treatment/disposal costs, delay in the need to construct a new cell and cap, savings in the post-closure care period thanks to less need for monitoring and lower financial guarantee obligations, and higher efficiency in landfill gas collection, resulting in larger revenues generated from production [55].…”

Section: Bioreactor Landfillsmentioning

confidence: 99%

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Conceptualization of Bioreactor Landfill Approach for Sustainable Waste Management in Karachi, Pakistan

et al. 2022

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Finding a sustainable approach for municipal solid waste (MSW) management is becoming paramount. However, as with many urban areas in developing countries, the approach applied to MSW management in Karachi is neither environmentally sustainable nor suitable for public health. Due to adoption of an inefficient waste management system, society is paying intangible costs such as damage to public health and environment quality. In order to minimize the environmental impacts and health issues associated with waste management practices, a sustainable waste management and disposal strategy is required. The aim of this paper is to present a concept for the development of new bioreactor landfills for sustainable waste management in Karachi. Furthermore, this paper contributes to estimation of methane (CH4) emissions from waste disposal sites by employing the First Order Decay (FOD) Tier 2 model of the Intergovernmental Panel on Climate Change (IPCC) and determining of the biodegradation rate constant (k) value. The design and operational concept of bioreactor landfills is formulated for the study area, including estimation of land requirement, methane production, power generation, and liquid required for recirculation, along with a preliminary sketch of the proposed bioreactor landfill. This study will be helpful for stockholders, policy makers, and researchers in planning, development, and further research for establishment of bioreactor landfill facilities, particularly in the study area as well as more generally in regions with a similar climate and MSW composition.

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Section: Bioreactor Landfillsmentioning

confidence: 99%

Section: Bioreactor Landfillsmentioning

confidence: 99%

Conceptualization of Bioreactor Landfill Approach for Sustainable Waste Management in Karachi, Pakistan

et al. 2022

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“…This quality is typically defined as final storage quali- Grossule et al, 2018;Grossule and Lavagnolo, 2019;Stegmann, 2003, 2007). the unrealistic opinion was held that 30 years after closure landfills no longer require special care and -if operated by the private sector -may be returned to the communities.…”

Section: Final Storage Quality and Closure Of The Aftercarementioning

confidence: 99%

Problems in Traditional Landfilling and Proposals for Solutions Based on Sustainability

Grossule

Stegmann

2020

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In recent years, the Circular Economy has become the key lynchpin underlying the waste management system. However, the emphasis placed on recycling has led, on one hand, to an underestimation of the critical issues that are currently emerging so dramatically (i.e. limited recyclability of materials, instability of markets for secondary raw materials, and accumulation of contaminants present in the recycled materials), whilst on the other to neglect the inescapable role of landfill in waste management. In many cases, landfills are seen as a simple and economical means of disposing of waste, and from a political, legislative and technical viewpoint they are frequently denied the attention devoted to other engineering works, lacking adequate financial investment to cover the costs required to ensure a sustainable landfill system. Landfill should be designed and constructed in line with the principle of environmental sustainability, by adopting technical measures aimed at guaranteeing waste stability and immobilisation of contaminants over a period of less than one generation and ensuring a Final Storage Quality in equilibrium with the environment. This article summarises the concept of sustainable landfilling, identifies the technical strategies that characterise this system, describes the critical issues frequently encountered after decades of operation and proposes a series of solutions aimed to control long-term behavior.

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“…The choice of a specific type depends on many factors (i.e., cost, regulations, climate, waste characteristics). Also, the goals of waste treatment (i.e., energy recovery, increasing the waste stabilization) play a role in landfill type selection (Grossule et al, 2018). One of the biggest challenges of landfilling technology is to maintain the performance of a landfill as its initial design purposes to minimize the risks to the surrounding environment.…”

Section: Introductionmentioning

confidence: 99%

The Elevated Temperature and Gas Component Within an Operating Semi-Aerobic Landfill

2020

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The semi-aerobic landfill concept, which is based on passive aeration, is the compulsory standard for planning new landfill projects in Japan. The semi-aerobic landfill concept is also applied in several other countries because of its low construction and operating costs. The landfill gas (LFG) component and the LFG temperature are the main indicators of the aerobization of semi-aerobic landfills. Analysis of LFG, its concentration, and its temperature can be easily carried out on-site to evaluate the passive aeration of an operating semi-aerobic landfill. Therefore, this study observed LFG temperatures and LFG components to assess the partial aerobization within an operating semi-aerobic landfill. The observational data revealed that the methane (CH4) gas concentration of most of the main LFG venting pipes (VPs) was below 15%. The aerobic condition happened effectively surrounding the main LFGVP M2 because over the observation period, the ratio of CH4 to CO2 was less than 1.0. The highest gas temperature was above 60°C within the main LFGVP M2, and there was a trend of high temperatures above 40°C for more than 5 years before the temperature declined to 20°C in the most recent observation. The high LFG temperatures were recorded in the winter months due to the buoyancy effect. High temperature and the CH4/CO2 ratio less than 1.0 potentially representing good indicators showed that aerobic decomposition is becoming dominant. The study showed clearly that the aerobic biodegradation performance in this semi-aerobic landfill is extremely good.

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Bioreactor Landfills: Comparison and Kinetics of the Different Systems

Cited by 14 publications

References 75 publications

Conceptualization of Bioreactor Landfill Approach for Sustainable Waste Management in Karachi, Pakistan

Conceptualization of Bioreactor Landfill Approach for Sustainable Waste Management in Karachi, Pakistan

Problems in Traditional Landfilling and Proposals for Solutions Based on Sustainability

The Elevated Temperature and Gas Component Within an Operating Semi-Aerobic Landfill

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