Characterization of landfilled materials: screening of the enhanced landfill mining potential

Quaghebeur, Mieke; Laenen, Ben; Geysen, Daneel; Nielsen, Peter; Pontikes, Yiannis; Gerven, Tom Van; Spooren, Jeroen

doi:10.1016/j.jclepro.2012.06.012

Cited by 229 publications

(209 citation statements)

References 15 publications

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“…Different categories of benefits of landfill mining (B1: benefit of regained lands; B2: benefit of recovered air-spaces; B3: recycling soil-like materials; B4: recycling stones and construction waste; B5: recycling metals and glasses; B6: producing RDFs; B7: generating electricity by incineration; B8: avoidance of leachate collection and treatment; B9: avoidance of landfill gas emission.). Kaartinen et al, 2013;Quaghebeur et al, 2013), but in our case, the metal content was only 0.41%. Moreover, large pieces of metals (copper, iron, aluminum, etc.…”

Section: Benefit Analysiscontrasting

confidence: 60%

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A cost-benefit analysis of landfill mining and material recycling in China

et al. 2015

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a b s t r a c tLandfill mining is an environmentally-friendly technology that combines the concepts of material recycling and sustainable waste management, and it has received a great deal of worldwide attention because of its significant environmental and economic potential in material recycling, energy recovery, land reclamation and pollution prevention. This work applied a cost-benefit analysis model for assessing the economic feasibility, which is important for promoting landfill mining. The model includes eight indicators of costs and nine indicators of benefits. Four landfill mining scenarios were designed and analyzed based on field data. The economic feasibility of landfill mining was then evaluated by the indicator of net present value (NPV). According to our case study of a typical old landfill mining project in China (Yingchun landfill), rental of excavation and hauling equipment, waste processing and material transportation were the top three costs of landfill mining, accounting for 88.2% of the total cost, and the average cost per unit of stored waste was 12.7 USD ton À1 . The top three benefits of landfill mining were electricity generation by incineration, land reclamation and recycling soil-like materials. The NPV analysis of the four different scenarios indicated that the Yingchun landfill mining project could obtain a net positive benefit varying from 1.92 million USD to 16.63 million USD. However, the NPV was sensitive to the mode of land reuse, the availability of energy recovery facilities and the possibility of obtaining financial support by avoiding post-closure care.

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Section: Benefit Analysiscontrasting

confidence: 60%

“…waste-to-energy/material (WtE/M) technologies (Hull et al, 2005;Joseph et al, 2007;Quaghebeur et al, 2013;Bosmans et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

A cost-benefit analysis of landfill mining and material recycling in China

et al. 2015

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“…The plastic wastes on the fourth layer have experienced biochemical reaction processes for the longest time, and in the mean time, bares the biggest pressure from the upper layer, which probably is the reason that it carries more impurities than those in other layers. Quaghebeur et al (2013) found that the ash content of plastic fraction in landfills were 20e35%, much higher than normal plastics (1%), and the sticking dust or sand influenced the measurements. However, in our research, the result of impurities content cleaned by washing process could well support the obvious researches.…”

Section: Moisture and Impuritiesmentioning

confidence: 91%

“…The impurities content on the plastic waste was relatively high with an average value of 71.02 ± 6.31%, ranging from 61.78% to 84.38%, with a significant higher value falling on the fourth layer (dumped from 1989 to 1992) than on the first and third layers. The impurities on plastic wastes may primarily consist of soil-type fractions, sands, waste papers, while plastic wastes primarily consist of various film-type plastic bags, which are light in weight with big surface and therefore good carriers for the impurities (Chiemchaisri et al, 2010;Quaghebeur et al, 2013). The plastic wastes on the fourth layer have experienced biochemical reaction processes for the longest time, and in the mean time, bares the biggest pressure from the upper layer, which probably is the reason that it carries more impurities than those in other layers.…”

Section: Moisture and Impuritiesmentioning

confidence: 99%

“…According to recent researches, the municipal solid waste stored in landfills normally consists of 20e30% combustible materials (the primary component is plastic wastes), 50e60% soil-type materials, 10% inorganic substances (mainly including concrete, stones and glass) and a small percentage of metals (Cossu et al, 1995;Zhao et al, 2007;Prechthai et al, 2008;Kaartinen et al, 2013;Quaghebeur et al, 2013). After the stored waste being excavated and screened from the old landfill, metals and construction wastes can be easily recycled, soil-type materials can be applied to green spaces and gardens as fertilizers , but how to recover more energy from the plastic wastes in landfill mining were still in discussing (Bosmans et al, 2013), and the potential of recovering plastic wastes is the major factor to assess the economic feasibility of a landfill mining project (van der Zee et al, 2004;van Passel et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Characteristics and the recovery potential of plastic wastes obtained from landfill mining

Zhou

Fang

et al. 2014

Journal of Cleaner Production

196

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a b s t r a c tPlastics have been the most consumed materials of human societies in recent decades and, in the mean time, one of the major products obtained from landfill mining. Characteristics of the landfill mined plastic wastes and their recovery potential were the key points to determine the feasibility of landfill mining projects. We collected municipal solid waste samples of different storage years from the landfill and did mechanical screening and manual separating to sort out plastic wastes, and a typical old landfill, which is of 24 storage years and located in central China, was taken as our studied case. According to our research, plastic wastes accounted for 10.62 ± 5.12% of the total stored wastes in the old landfill, among which, 69.13% was plastic bags (white PE plastic bags accounted for 11.34%; colored PE plastic bags 29.77%; other plastic bags 28.02%), and 30.87% was other plastics (incl. PP, PVC, PS, etc.). The average moisture content in the plastic waste was 19.96 ± 4.65% and the average impurities content was 71.02 ± 6.31% before manual washing and cleaning. The VS, ash, fixed carbon and calorific value of manually cleaned plastic wastes were 87.09 ± 0.55%, 10.84 ± 1.19%, 2.07 ± 0.85% and 43.18 ± 1.49 MJ kg À1 , respectively. Elements testing (C, N, O, S, Cl, Si, Al) and surface images analysis under scanning electron microscope showed that normal cleaning techniques had a difficulty in thoroughly getting rid of all the impurities on the surface of plastic bags excavated from old landfill, which will impede plastic wastes from being mechanical recycled as renewable materials or being chemically recycled by either pyrolysis, gasification, hydrogenation. Incineration or treating as residue derived fuels (RDFs) for recovering energy was the most practical way to process landfill mining plastic wastes under the normal cleaning techniques.

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Effects of atmosphere and blending ratios on emission characteristics of pollutants from co‐combustion of municipal solid waste and aged refuse

Feng

Chen

et al. 2022

Asia-Pacific J Chem Eng

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The emission of pollutants caused by incineration has imposed a severe burden on the atmospheric environment. In this study, the thermogravimetric thermal analyzer (TGA) was used to study the characteristic behavior of co-combustion of municipal solid waste (MSW) and aged refuse (AR). And combined with Fourier transform infrared measurement, the emissions of several typical gaseous pollutants (NO, CO x , CH 4 , HCl, HCN, SO 2 ) have been investigated. Also, the release characteristics of heavy metals (As, Cd, Co, Cr, Cu, Ni, Pb, Zn, Ti) during the co-combustion process were explored using inductively coupled plasma-optical emission spectrometry (ICP-OES). This research found that both the combustion atmosphere and the mixing ratios impacted the experimental results. As the proportion of AR in the blends increased, the ignition index decreased, the burnout temperature rose, but the burnout efficiency increased. The addition of AR inhibited the generation of CO 2 , CH 4 , and HCl and promoted the production of NO and CO. Aerobic environment mainly inhibited the release of Cr and Mn. The research results provided important information for the study of pollutant emission characteristics during the cocombustion of MSW with AR.

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Characterization of landfilled materials: screening of the enhanced landfill mining potential

Cited by 229 publications

References 15 publications

A cost-benefit analysis of landfill mining and material recycling in China

A cost-benefit analysis of landfill mining and material recycling in China

Characteristics and the recovery potential of plastic wastes obtained from landfill mining

Effects of atmosphere and blending ratios on emission characteristics of pollutants from co‐combustion of municipal solid waste and aged refuse

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