Characterization of fine fraction mined from two Finnish landfills

A fine fraction (FF) was mined from two Finnish municipal solid waste (MSW) landfills in Kuopio (1- to 10-year-old, referred as new landfill) and Lohja (24- to 40-year-old, referred as old landfill) in order to characterize FF. In Kuopio the FF (<20mm) was on average 45±7% of the content of landfill and in Lohja 58±11%. Sieving showed that 86.5±5.7% of the FF was smaller than 11.2mm and the fraction resembled soil. The total solids (TS) content was 46-82%, being lower in the bottom layers compared to the middle layers. The organic matter content (measured as volatile solids, VS) and the biochemical methane potential (BMP) of FF were lower in the old landfill (VS/TS 12.8±7.1% and BMP 5.8±3.4m3 CH4/t TS) than in the new landfill (VS/TS 21.3±4.3% and BMP 14.4±9.9m3 CH4/t TS), and both were lower compared with fresh MSW. In the Kuopio landfill materials were also mechanically sieved in the full scale plant in two size fraction <30mm (VS/TS 31.1% and 32.9m3 CH4/t TS) and 30-70mm (VS/TS 50.8% and BMP 78.5m3 CH4/t TS). The nitrogen (3.5±2.0g/kg TS), phosphorus (<1.0-1.5g/kg TS) and soluble chemical oxygen demand (COD) (2.77±1.77kg/t TS) contents were low in all samples. Since FF is major fraction of the content of landfill, the characterization of FF is important to find possible methods for using or disposing FF mined from landfills.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Department of Chemistry and Bioengineering, Research group: Industrial Bioengineering and Applied Organic Chemistry
Contributors: Mönkäre, T. J., Palmroth, M. R. T., Rintala, J. A.
Number of pages: 6
Pages: 34-39
Publication date: 2016
Peer-reviewed: Yes

Publication information

Journal: Waste Management
Volume: 47A
ISSN (Print): 0956-053X
Ratings: 
  • Scopus rating (2016): CiteScore 4 SJR 1.407 SNIP 2.177
Original language: English
ASJC Scopus subject areas: Waste Management and Disposal
Keywords: Biochemical methane potential, Characterization, Fine fraction, Landfill mining, Municipal solid waste
Electronic versions: 
URLs: 
Source: Scopus
Source ID: 84958845557

Research output: Contribution to journalArticleScientificpeer-review

Temporal variation in indoor transfer of dirt-associated environmental bacteria in agricultural and urban areas

An agricultural environment and exposure to diverse environmental microbiota has been suggested to confer protection against immune-mediated disorders. As an agricultural environment may have a protective role, it is crucial to determine whether the limiting factors in the transfer of environmental microbiota indoors are the same in the agricultural and urban environments. We explored how sampling month, garden diversity and animal ownership affected the indoor-transfer of environmental microbial community. We collected litter from standardized doormats used for 2 weeks in June and August 2015 and February 2016 and identified bacterial phylotypes using 16S rRNA Illumina MiSeq sequencing. In February, the diversity and richness of the whole bacterial community and the relative abundance of environment-associated taxa were reduced, whereas human-associated taxa and genera containing opportunistic pathogens were enriched in the doormats. In summer, the relative abundances of several taxa associated previously with beneficial health effects were higher, particularly in agricultural areas. Surprisingly, the importance of vegetation on doormat microbiota was more observable in February, which may have resulted from snow cover that prevented contact with microbes in soil. Animal ownership increased the prevalence of genera Bacteroides and Acinetobacter in rural doormats. These findings underline the roles of season, living environment and lifestyle in the temporal variations in the environmental microbial community carried indoors. As reduced contact with diverse microbiota is a potential reason for immune system dysfunction, the results may have important implications in the etiology of immune-mediated, non-communicable diseases.

General information

Publication status: Published
MoE publication type: A1 Journal article-refereed
Organisations: Architecture, University of Helsinki, Tampere University, University of Tampere
Contributors: Hui, N., Parajuli, A., Puhakka, R., Grönroos, M., Roslund, M. I., Vari, H. K., Selonen, V. A., Yan, G., Siter, N., Nurminen, N., Oikarinen, S., Laitinen, O., Rajaniemi, J., Hyöty, H., Sinkkonen, A.
Number of pages: 9
Publication date: 7 Aug 2019
Peer-reviewed: Yes

Publication information

Journal: Environment International
Volume: 132
Issue number: November 2019
Article number: 105069
ISSN (Print): 0160-4120
Original language: English
ASJC Scopus subject areas: Environmental Science (miscellaneous), Immunology and Microbiology (miscellaneous)
Electronic versions: 

Bibliographical note

dupl=49848283

Research output: Contribution to journalArticleScientificpeer-review

Chasing measurements for real-world emissions of city buses

General information

Publication status: Published
Organisations: Physics, Research area: Aerosol Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group, Atmospheric Composition Research, Finnish Meteorological Institute, Helsinki Region Environmental Services Authority (HSY), Department of Environmental Sciences, Helsinki University
Contributors: Järvinen, A., Karjalainen, P., Bloss, M., Potila, O., Simonen, P., Kuuluvainen, H., Timonen, H., Saarikoski, S., Niemi, J. V., Keskinen, J., Rönkkö, T.
Publication date: 2017
Peer-reviewed: Unknown
Event: Paper presented at European Aerosol Conference 2017, Zürich, Switzerland.
ASJC Scopus subject areas: Automotive Engineering, Pollution, Energy (miscellaneous)
Keywords: Exhaust emissions, bus emissions, Air quality

Research output: Other conference contributionPaper, poster or abstractScientific

Identifying criteria for environmental risk assessment models at different stage-gates of nano-material/product innovation considering requirements of various stakeholders (TH083)

General information

Publication status: Published
Organisations: Physics, Research area: Aerosol Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group
Contributors: Sørensen, S. N., Hansen, S. F., Baun, A., Spurgeon, D., Matzke, M., Schirmer, K., Burkard, M., Dal Maso, M., Poikkimäki, M., Verschoor, A., Quik, J., Peijnenburg, W., Wigger, H., Nowack, B.
Publication date: 17 May 2018
Peer-reviewed: Unknown
Event: Paper presented at SETAC EUROPE 28th Annual Meeting, Rome, Italy.

Bibliographical note

Conference abstract

Research output: Other conference contributionPaper, poster or abstractScientific

Vertical profiles of lung deposited surface area concentration of particulate matter measured with a drone in an urban street canyon

General information

Publication status: Published
Organisations: Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group, Research area: Aerosol Physics, Faculty of Natural Sciences, Helsinki Region Environmental Services Authority (HSY), Aeromon Ltd., Aeromon Ltd, Atmospheric Composition Research, Finnish Meteorological Institute
Contributors: Kuuluvainen, H., Poikkimäki, M., Järvinen, A., Irjala, M., Dal Maso, M., Niemi, J., Timonen, H., Keskinen, J., Rönkkö, T.
Publication date: 13 Mar 2018
Peer-reviewed: Unknown
Event: Paper presented at 11th International Conference on Air Quality - Science and Application, Barcelona, Spain.

Bibliographical note

Conference abstract and presentation

Research output: Other conference contributionPaper, poster or abstractScientific

Vertical profiles of lung deposited surface area (LDSA) concentration measured with a drone in an urban street canyon (MP-17)

General information

Publication status: Published
Organisations: Physics, Research group: The Instrumentation, Emissions, and Atmospheric Aerosols Group, Research area: Aerosol Physics, Helsinki Region Environmental Services Authority (HSY), Aeromon Ltd., Atmospheric Composition Research, Finnish Meteorological Institute, Finnish Meteorological Institute, Helsinki
Contributors: Kuuluvainen, H., Poikkimäki, M., Järvinen, A., Kuula, J., Irjala, M., Dal Maso, M., Keskinen, J., Timonen, H., Niemi, J., Rönkkö, T.
Pages: 73
Publication date: 18 Jun 2018
Peer-reviewed: Unknown
Event: Paper presented at Aerosol Technology 2018, Bilbao, Spain.

Bibliographical note

Conference abstract and poster

Research output: Other conference contributionPaper, poster or abstractScientific