Reduction of gaseous and particulate emissions from small-scale wood combustion with a catalytic combustor

Hukkanen, Annika; Kaivosoja, T.; Sippula, Olli; Nuutinen, Kati; Jokiniemi, Jorma; Tissari, Jarkko

doi:10.1016/j.atmosenv.2012.01.016

Cited by 47 publications

(40 citation statements)

References 22 publications

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“…Nuutinen et al, 2014), as well as high and low particle concentrations (e.g. Tissari et al, 2015;Lamberg et al, 2011b;Hukkanen et al, 2012) and it is also suitable for different emission sources (e.g. Jalava et al, 2010;Kaivosoja et al, 2013;Kortelainen et al, 2015).…”

Section: Emission Factorsmentioning

confidence: 99%

Black carbon and fine particle emissions in Finnish residential wood combustion: Emission projections, reduction measures and the impact of combustion practices

Savolahti

Karvosenoja

Tissari

et al. 2016

Atmospheric Environment

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Section: Emission Factorsmentioning

confidence: 99%

Black carbon and fine particle emissions in Finnish residential wood combustion: Emission projections, reduction measures and the impact of combustion practices

Savolahti

Karvosenoja

Tissari

et al. 2016

Atmospheric Environment

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“…Wood combustion catalysts have been reported to reduce emissions of PM and PAH by up to 30% via thermal oxidation [10,11]. Simple installation of a catalytic device into the combustion chamber of a wood heater, without altering wood heater operation, may be more acceptable and achievable by most members of a community.…”

Section: Introductionmentioning

confidence: 99%

Community-Wide Distribution of a Catalytic Device to Reduce Winter Ambient Fine Particulate Matter from Residential Wood Combustion: A Field Study

Johnston

Todd

et al. 2016

PLoS ONE

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Residential wood combustion is the main source of elevated concentrations of fine particulate matter (PM2.5) during winter in many towns of Tasmania, Australia. A commercially available firebox catalyst in Australia has previously been shown to reduce visible smoke emissions and the manufacturer reports reductions in particle emissions generated from individual wood heaters in laboratory settings. This study aimed to evaluate the potential for community-wide distribution of the catalyst to improve the ambient winter air quality in the field. The study was set in four rural towns in northern Tasmania with similar topography, population size, and proportion of houses using wood heaters for space heating. Hourly PM2.5 concentrations and meteorological conditions were monitored in all locations by fixed stations from May-September, 2013 and 2014. In June 2014, residents of one town, Perth, were offered a free catalyst for placement in their fireboxes. A general linear model evaluated the impact of the intervention using an indicator variable adjusted for hourly conditions of weather. Almost 80% of wood heater owners in Perth accepted a catalytic device. However, no significant changes in ambient PM2.5 concentrations were associated with the catalyst trial. Future community-level research should address maintenance of the catalyst in the firebox, and the adequacy of conditions that facilitate catalysed combustion in individual heaters.

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“…This is especially critical when alternative non-wood fuels with a higher particle formation are combusted [23]. Nevertheless, several described research results with single-room heaters have shown that a reduction of 30 -50 % PM is possible [13,19,20]. An important issue for the use of catalysts in practical operation is their long-term stability.…”

Section: Challenges and Chances For Emission Reduction With State Of mentioning

confidence: 99%

“…However, there is only rare documentation of the long-term stability and no comprehensive analysation of the behaviour from the used catalysts during the manifold conditions occurring in stoves and boilers. The major part of described research in literature deals with the effect of catalysts at single-room heaters [9,[13][14][15][16][17][18][19][20]. Only some results have been presented from boilers with catalysts [21][22][23].…”

Section: State Of the Art In Small-scale Systemsmentioning

confidence: 99%

“…With a good dimensioned and active catalyst reduction rates over 90 % can be realized [19,20,21]. Nevertheless, very high pollutant concentrations [13,18], catalyst bypassing due to leakages [15] or insufficient process temperatures [23] can restrict the performance of the applied catalysts. The reduction rates for VOC are often lower than the rates for CO or at most equal.…”

Section: Challenges and Chances For Emission Reduction With State Of mentioning

confidence: 99%

See 1 more Smart Citation

Characterization and integration of oxidation catalysts at small-scale biomass combustion furnaces

et al. 2017

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Abstract. Small-scale biomass combustion is a major part in heat supply from renewable resources. Drawbacks to the environmental background are the pollutant emissions, which are formed as a result of maloperation, suboptimal furnace construction or the biomass fuel composition. The named primary factors can be influenced by several measures, but the achievable emission results are limited. To provide real clean combustion technology with nearly zero pollutant emissions, secondary emission reduction measures are necessary. One of these measures is the application of catalytic flue gas cleaning as integrated or downstream solution. Catalysis is already a state of the art element in many processes and following this, some studies reveal already its potential to reduce CO, VOC as well as particle emissions in small-scale biomass combustion systems. However, a wide application of catalysts in wood combustion units didn't take place so far, because the challenging process conditions demand a proper integration and highly stable and active catalytic materials. For the achievement of well-functioning combustion systems with catalyst solutions a procedure for application-oriented characterization is presented. Initial investigations with commercially available catalysts have shown that the gas hourly space velocity and the oxygen content have the most significant influence on the conversion rate of carbon monoxide and nitrogen oxide. Two samples with different active phases have been compared, one with solely metal oxides and one with metal oxides and noble metals. The one with noble metals showed as expected a higher activity, but also a higher stability.

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Reduction of gaseous and particulate emissions from small-scale wood combustion with a catalytic combustor

Cited by 47 publications

References 22 publications

Black carbon and fine particle emissions in Finnish residential wood combustion: Emission projections, reduction measures and the impact of combustion practices

Black carbon and fine particle emissions in Finnish residential wood combustion: Emission projections, reduction measures and the impact of combustion practices

Community-Wide Distribution of a Catalytic Device to Reduce Winter Ambient Fine Particulate Matter from Residential Wood Combustion: A Field Study

Characterization and integration of oxidation catalysts at small-scale biomass combustion furnaces

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