Sanni Väisänen

Biogenic carbon emissions of integrated ethanol production.

Purpose – The purpose of this paper is to present greenhouse gas study results for biofuels produced with partial qualified utilisation of pulp wood or forest residues when integrated into kraft pulp mill systems. The impact of considering biogenic carbon on the results is also presented.Design/methodology/approach – The material and energy balances of the integrated ethanol production were simulated for the study with a mill‐wide simulation model. Data for the simulation were obtained from prehydrolysis and cooking experiments. The life cycle model for greenhouse gas calculation was created based on the simulation results. In this paper, the change of forest carbon stock caused by residue removal from forest soil and carbon delay of forest growth after stand felling were also taken into consideration, to discuss the true greenhouse gas emissions of forest biomass utilisation.Findings – The emission reduction levels achieved with these ethanol fuels derived from forest biomass ranged from 80 to 90 per cen...

Peat Production in High-Emission Level Peatlands - A Key to Reducing Climatic Impacts?

Both peat utilization and peatlands themselves contribute to increases in greenhouse gas (GHG) emissions. This article examines how peatlands with naturally high GHG emission levels affect net GHG emissions during the life cycle of peat. GHG emissions were measured from three drained peatland sites with high GHG emission levels. The impact of peatland type on the GHG emissions was considered when peat was assumed to replace coal in an energy production facility. The emission reduction levels achieved with the use of peat fuel originating from high-emission level peatlands stood at 35% compared to coal use and 30% compared to the average peat emission value. The findings indicate that GHG emissions can be reduced overall when peat from high-emission peatlands is utilized instead of coal. Lower emissions are primarily achieved because the harvesting of peat from high-emission level peatlands reduces the GHG emission levels of those lands.

Business strategies for managing legislative requirements: a case study of legislative sustainability requirements for biofuels in the EU

Businesses employ different strategies to manage legislative requirements; however, there is little science-based understanding of the strategies that are in use. This study introduces a general legislation maturity model for businesses that includes company profiles, strategies and activity levels in relation to legislative requirements. Four strategies, namely defensive, adaptive, proactive and lead, are described through a case study of legislative sustainability requirements for biofuels in the EU that are organised according to their urgency and validity to biofuel producers, and the associated activity levels. This model will help managers to identify the strategies they employ, more systematically select strategies, understand the spatial and temporal scales and more efficiently allocate legislation management resources. The legislation maturity profiles, strategies, activities and urgency-validity framework are applicable in other industries.