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  • 1.
    Bhatnagar, Amit
    et al.
    Univ Eastern Finland, Finland.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Latvia, Latvia.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hunting for valuables from landfills and assessing their market opportunities: A case study with Kudjape landfill in Estonia2017In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 35, no 6, p. 627-635Article in journal (Refereed)
    Abstract [en]

    Landfill mining is an alternative technology that merges the ideas of material recycling and sustainable waste management. This paper reports a case study to estimate the value of landfilled materials and their respective market opportunities, based on a full-scale landfill mining project in Estonia. During the project, a dump site (Kudjape, Estonia) was excavated with the main objectives of extracting soil-like final cover material with the function of methane degradation. In total, about 57,777 m(3) of waste was processed, particularly the uppermost 10-year layer of waste. Manual sorting was performed in four test pits to determine the detailed composition of wastes. 11,610 kg of waste was screened on site, resulting in fine (<40 mm) and coarse (>40 mm) fractions with the share of 54% and 46%, respectively. Some portion of the fine fraction was sieved further to obtain a very fine grained fraction of <10 mm and analyzed for its potential for metals recovery. The average chemical composition of the <10 mm soil-like fraction suggests that it offers opportunities for metal (Cr, Cu, Ni, Pb, and Zn) extraction and recovery. The findings from this study highlight the importance of implementing best available site-specific technologies for on-site separation up to 10 mm grain size, and the importance of developing and implementing innovative extraction methods for materials recovery from soil-like fractions.

  • 2.
    Hogland, William
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Bramryd, T
    Persson, I
    Physical, biological and chemical effects on unsorted fractions of industrial solid waste in waste fuel storage1996In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 14, no 2, p. 197-210Article in journal (Refereed)
    Abstract [en]

    Technical, biological and environmental problems encountered in the storage of industrial waste fuel are analysed and discussed. Measurements of temperature, moisture content, oxygen, methane and carbon dioxide during the storage period are presented. It is shown that the temperature increases rapidly to 70-90 degrees C and the oxygen content decreases to almost zero in the lower parts of the storage pile. After several months of high but stable temperature conditions, self-ignition occurred in the storage piles. The test results are related to the proper design of storage piles. (C) 1996 ISWA. 

  • 3.
    Ibrahim, Muhammad Asim
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Alriksson, Stina
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Fires at storage sites of organic materials, waste fuels and recyclables2013In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 31, no 9, p. 937-945Article in journal (Refereed)
    Abstract [en]

    During the last decade, the European Union has enforced the diversion of organic wastes and recyclables to waste management companies operating incineration plants, composting plants and recycling units instead of landfills. The temporary storage sites have been established as a buffer against fluctuations in energy demand throughout the year. Materials also need to be stored at temporary storage sites before recovery and recycling. However, regulations governing waste fuel storage and handling have not yet been developed, and, as a result, companies have engaged in risky practices that have resulted in a high number of fire incidents. In this study, a questionnaire survey was distributed to 249 of the 400 members of Avfall Sverige (Swedish Waste Management Association), which represents the waste management of 95% of the Swedish population. Information regarding 122 storage facilities owned by 69 companies was obtained; these facilities were responsible for the storage of 47% of the total treated waste (incineration + digestion + composting) in 2010 in Sweden. To identify factors related to fire frequency, the questionnaire covered the amounts of material handled and burnt per year, financial losses due to fires, storage duration, storage method and types of waste. The results show that 217 fire incidents corresponded to 170 kilotonnes of material burnt and cumulative losses of 49 million SEK (€4.3 million). Fire frequency and amount of material burnt per fire was found to be dependent upon type of management group (waste operator). Moreover, a correlation was found between fire frequency and material recycled during past years. Further investigations of financial aspects and externalities of fire incidents are recommended.

  • 4.
    Jani, Yahya
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Kaczala, Fabio
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Charlotte, Marchand
    University of Montréal, Canada.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Mait, Kriipsalu
    Estonian University of Life Sciences, Estonia.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Anders, Kihl
    Ragn-Sells AB, Sollentuna.
    Characterisation of excavated fine fraction and waste composition from a Swedish landfill2016In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 34, no 12, p. 1292-1299Article in journal (Refereed)
    Abstract [en]

    The present research studies the characterisation and the physico-chemical properties of an excavated fine fraction (<10 mm) from a Swedish landfill, the Högbytorp. The results showed that the fine fraction represents 38% by mass of the total excavated wastes and it contains mainly soil-type materials and minerals. Higher concentrations of zinc, copper, barium and chromium were found with concentrations higher than the Swedish Environmental Protection Agency (EPA) for contaminated soil. The found moisture and organic contents of the fine fraction were 23.5% and 16.6%, respectively. The analysed calorific value (1.7 MJ kg-1), the potential of CH4 (4.74 m3 t-1 dry matter) and Total Organic Carbon (TOC) (5.6%) were low and offer low potential of energy. Sieving the fine fraction further showed that 80% was smaller than 2 mm. The fine represents a major fraction at any landfill (40%–70%), therefore, characterising the properties of this fraction is essential to find the potential of reusing/recycling or safely redisposing.

  • 5.
    Kaczala, Fabio
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Orupold, Kaja
    Estonian Univ Life Sci, Estonia.
    Augustsson, Anna
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Burlakovs, Juris
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, Marika
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Bhatnagar, Amit
    Univ Eastern Finland, Finland.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Fractionation of Pb and Cu in the fine fraction (< 10 mm) of waste excavated from a municipal landfill2017In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 35, no 11, p. 1175-1182Article in journal (Refereed)
    Abstract [en]

    The fractionation of metals in the fine fraction (<10 mm) of excavated waste from an Estonian landfill was carried out to evaluate the metal (Pb and Cu) contents and their potential towards not only mobility but also possibilities of recovery/extraction. The fractionation followed the BCR (Community Bureau of Reference) sequential extraction, and the exchangeable (F1), reducible (F2), oxidizable (F3) and residual fractions were determined. The results showed that Pb was highly associated with the reducible (F2) and oxidizable (F3) fractions, suggesting the potential mobility of this metal mainly when in contact with oxygen, despite the low association with the exchangeable fraction (F1). Cu has also shown the potential for mobility when in contact with oxygen, since high associations with the oxidizable fraction (F3) were observed. On the other hand, the mobility of metals in excavated waste can be seen as beneficial considering the circular economy and recovery of such valuables back into the economy. To conclude, not only the total concentration of metals but also a better understanding of fractionation and in which form metals are bound is very important to bring information on how to manage the fine fraction from excavated waste both in terms of environmental impacts and also recovery of such valuables in the economy.

  • 6.
    Nammari, Diauddin R.
    et al.
    University of Kalmar, Department of Technology.
    Hogland, William
    University of Kalmar, Department of Technology.
    Mutavchi, Viacheslav (published under the name Moutavtchi, Viatcheslav)
    University of Kalmar, Department of Technology.
    Marques, Marcia
    Rio de Janeiro State Univ UERJ, Dept Environm Engn, BR-20559900 Rio De Janeiro, Brazil .
    Nimmermark, Sven
    Univ Agr Sci, Dept Agr Biosyst & Technol, SE-23053 Alnarp, Sweden.
    Physical and chemical processes in baled waste fuel, with emphasis on gaseous emissions2003In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 21, no 4, p. 309-317Article in journal (Refereed)
    Abstract [en]

    Over a period of seven months, the temperature and the emissions from six cylindrical and two rectangular stored bales containing waste for later use as fuel were measured. The bales were kept at two different ranges of temperatures: 30-35˚C and 20-25˚C respectively. It was foundthat only the rectangular bales showed significant productionof CO2. The increase of emission for one of the rectangular bales kept at 30-35˚C, was 0.246% vol. CO2 per day for a 2-week period, after which there was a decrease of CO2 concentrations at a rate of 0.0224% vol. during a 32-week period. The other rectangular bale kept at 20-25˚C, exhibited a similar trend. However, the increase of CO2 concentrations was less at a rate of 0.0259% vol. per day during a 8-week period, after which the CO2 emission decreased at a rate of 0.0224% vol. per day during a 25-week period. All the bales exhibited aerobic decomposition in the sampling point. However, on measuring the leachate concentrations, it was evident that the bales were actually in the equivalent acid-generating phase of a young landfill. The temperature inside the bales did not increase higher than the ambient air temperature.

  • 7.
    Nammari, Diauddin R
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    MARQUES, MARCIA
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Thörneby, Lars
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Mathiasson, Lennart
    Mårtensson, Lennart
    Emissions from baled municipal solid waste: I. Methodological approach for investigation of gaseous emissions2007In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 25, p. 39-48Article in journal (Refereed)
  • 8.
    Nammari, Diauddin R
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Thörneby, Lars
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Hogland, William
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Mathiasson, Lennart
    Mårtensson, Lennart
    Emissions from baled municipal solid waste: II. Effects of different treatments and baling techniques on the emission of volatile organic compounds2007In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 25, p. 109-118Article in journal (Refereed)
  • 9. Tamaddon, F
    et al.
    Hogland, William
    LUND UNIV, LUND INST TECHNOL, DEPT WATER RESOURCES ENGN, BOX 118, S-22100 LUND, SWEDEN .
    Review of cadmium in plastic waste in Sweden1993In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 11, no 4, p. 287-295Article in journal (Refereed)
1 - 9 of 9
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