Environmental and economic assessment of ‘open waste dump’ mining in Sri Lanka

Danthurebandara, Maheshi; Passel, Steven Van; Acker, Karel Van

doi:10.1016/j.resconrec.2015.07.004

Cited by 60 publications

(43 citation statements)

References 27 publications

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“…This again shows the importance of changing market conditions, which all stakeholders perceived as one of the biggest challenges for ELFM implementation. Danthurebandara et al (2015a) also support the stakeholders' beliefs that high investment costs are a main barrier for implementation and identify investments in WtE technology as a major cost component. While technological development would push ELFM it could also hinder investments by raising uncertainty.…”

Section: Perceptions About the Remo Landfillsupporting

confidence: 61%

“…Van Passel et al (2013) conclude that benefits from a reduction in greenhouse gases through material recovery have the biggest impact. This contrasts with Danthurebandara et al (2015a), who identify an environmental burden in the impact category Climate Change, and most benefits in the impact categories Fossil Depletion, Ionizing Radiation and Urban Land Occupation. The differences in GHG emissions is explained by distinct approaches: Van Passel et al (2013) consider a longer methane recovery and purchasing materials and energy on the market for the do-nothing scenario (Danthurebandara et al 2015a).…”

Section: Perceptions About the Remo Landfillmentioning

confidence: 90%

“…). Danthurebandara et al (2015a) even show that impacts from ELFM operations on human toxicity can be beneficial. However, in contrast to environmental burdens the impact category was insignificant (Danthurebandara et al, 2015b).…”

Section: Perceptions About the Remo Landfillmentioning

confidence: 99%

“…Some environmental benefits of ELFM have been assessed by Van Passel et al (2013) and Danthurebandara et al (2015a). Van Passel et al (2013) conclude that benefits from a reduction in greenhouse gases through material recovery have the biggest impact.…”

Section: Perceptions About the Remo Landfillmentioning

confidence: 99%

“…hydrogen) . Potentially, ELFM could lead to the mitigation of primary resource production and therefore generate positive environmental effects (Danthurebandara et al, 2015a;Jain et al, 2014). Its economic performance, on the other hand, is still unclear.…”

Section: Introductionmentioning

confidence: 99%

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Developing Stakeholder Archetypes for Enhanced Landfill Mining

et al. 2019

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Understanding the perspectives of different stakeholders on emerging technological concepts is an important step towards their implementation. Enhanced Landfill Mining (ELFM) is one of these emerging concepts. It aims at valorizing past waste streams to higher added values in a sustainable manner. Yet, assessment of ELFM mainly focusses on environmental and private economic issues, and societal impacts are rarely analyzed. This study uses semi-structured interviews to build understanding for different ELFM practitioners and researchers and develops five stakeholder archetypes for ELFM implementation: the Engaged Citizen, the Entrepreneur, the Technology Enthusiast, the Visionary and the Skeptic. The archetypes outline major differences in approaching ELFM implementation. The stakeholder perceptions are put into context with existing literature, and implications for ELFM implementation and future research are discussed. Results show that differences in regulatory changes and technology choices are affected by different stakeholder perspectives and more research is needed to balance inner-and inter-dimensional conflicts of ELFM's sustainability. The developed archetypes can especially be helpful when evaluating social impacts, whose perception often depends on opinion and is difficult to quantify.

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Section: Perceptions About the Remo Landfillsupporting

confidence: 61%

Section: Perceptions About the Remo Landfillmentioning

confidence: 90%

Section: Perceptions About the Remo Landfillmentioning

confidence: 99%

Section: Perceptions About the Remo Landfillmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Developing Stakeholder Archetypes for Enhanced Landfill Mining

et al. 2019

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Effects of “soil‐like” particle size on gas transport and water retention properties in aged municipal solid waste from a Sri Lankan open dumpsite

Shanujah

Deepagoda

Karunarathna

et al. 2020

Soil Science Soc of Amer J

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Open dumps constitute a major source of greenhouse gases (GHGs), predominantly methane and carbon dioxide, in developing countries. In an aged dump, typical waste composition is dominated by the “soil‐like” fraction of which physical, hydraulic and gas transport characteristics markedly affect GHG emissions. This study characterized soil‐gas diffusivity (Dp/D0), soil‐water characteristics (SWC), and particle size distribution in “soil‐like” fractions of aged solid waste retrieved at 2.5–5 m depth from an old open dumpsite situated at Kurunegala, Sri Lanka. The “soil‐like” fraction was proportioned into three groups based on particle size (0–4.75, 4.75–9.5, and 9.5–25 mm) to investigate the particle size effect on Dp/D0 and SWC. The simulated methane concentration profiles in different size groups were also examined using the transport simulator TOUGH2‐EOS7CA based on the multiphase flow of multicomponent gas mixture (methane, water vapour and air) under dry and half‐saturation conditions across a predefined temperature gradient. The results highlighted distinct two‐region characteristics (i.e., inter‐aggregate and intra‐aggregate pore regions) in all three size fractions which could be adequately parameterized with existing and modified bimodal functions. We proposed a useful practical tool for estimating Dp/D0 for known mean particle size and volumetric water content in the absence of direct measurements. The results further revealed that Dp/D0 is particle‐size dependent; however, Dp/D0 remained invariant across all size fractions at the volumetric water content of ∼0.22–0.25 cm3 cm−3. Numerical results further showed a pronounced effect of particle size and soil moisture on gas transport properties.

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The usage of household polythene and its management approaches

Bandara,

Marasinghe,

Mahagamage

2023

Environmental Quality Mgmt

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Plastic and polythene are useful innovations and are used for many products ranging from paper clips to spaceships due to their cost effectiveness, versatility, ease of production, and water resistant. However, the misuse and improper disposal of plastic and polythene create serious environmental, health, social, and financial issues. Thus, it is important to adhere to responsible disposal methods. The present study focused on the magnitude of usage, disposal methods, public awareness, and perception toward household polythene and plastic usage and disposal methods. A total of 150 respondents were selected using the cluster sampling technique in the Kuruwita Pradeshiya Sabha, Ratnapura, Sri Lanka. The data were collected through face‐to‐face and online interviews. The weights of the collected wastes were measured through a handheld digital scale. The findings of the study revealed that the majority of the respondents use polythene and plastic products and 83.33% of the respondents use these for their daily life due to the lack of alternatives and easy availability. The majority of the respondents mentioned the use of separate bags for shopping made out of eco‐friendly materials. Shopping in supermarkets has been a reason to increase the usage of polythene and plastic. HDPE, PET, and LDPE were the most commonly‐used plastics types and among which HDPE was the highest (24%) in the study area. Findings further revealed that the people with post‐graduate education used more polythene and plastic (19.8%) and the usage was higher (40.39%) in families in the non‐governmental sector. The participants with monthly income higher than 100,000 LKR used more polythene and plastic (28.84%) compare to others. The common way of disposing of was burning and participants had only a fair knowledge of banning, recycling, reusing, and controlling plastic waste. The study revealed the need for strict regulations and necessary actions to control the usage of polythene‐based products.

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Environmental and economic assessment of ‘open waste dump’ mining in Sri Lanka

Cited by 60 publications

References 27 publications

Developing Stakeholder Archetypes for Enhanced Landfill Mining

Developing Stakeholder Archetypes for Enhanced Landfill Mining

Effects of “soil‐like” particle size on gas transport and water retention properties in aged municipal solid waste from a Sri Lankan open dumpsite

The usage of household polythene and its management approaches

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