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Greenhouse gas balances, impacts and sustainability criteria Lecture part IV for Bioenergy Theory an


Lecture part IV for 'Bioenergy Theory and Applications' ... Harrowing. Level 0. Level 1. Level 2. Level 3. Supply. GHG & costs. Successive disaggregating of data: ... – PowerPoint PPT presentation

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Title: Greenhouse gas balances, impacts and sustainability criteria Lecture part IV for Bioenergy Theory an

Greenhouse gas balances, impacts and
sustainability criteriaLecture part IV for
Bioenergy Theory and Applications"  at Helsinki
University of Technology, Laboratory of Applied
Thermodynamics, October 6, 2005,
  • André Faaij
  • Copernicus Institute - Utrecht University

Contents part I - IV.
  • Biomass potentials, from global to regional
  • Conversion technologies
  • Logistics, scaling issues, chain performance and
  • Greenhouse gas balances, impacts and
    sustainability criteria

GHG-impacts of Bio-energy systems
  • Carbon stock dynamics
  • Reference systems
  • Permanence
  • Emission factors
  • Efficiency
  • Up stream energy inputs
  • By-products
  • Leakage
  • Other GHGs

Successive disaggregating of data Different
tiersare used for calculation and data
input Also carbon dynamics and cost data based
on this approach
Pellet import keten
GHG emissies
Recycling possibilities of SR poplar applications
considered in this study with a maximum of three
successive material applications
Current key markets for biomaterials in Western
  • Pulp and paper (34 Mton)
  • Chemicals Ethylene (20 Mton), Bio-based polymers
    (34 Mton), Fibre reinforced composites (2 Mton),
    Acids, Solvents (4 Mton), Lubricants (5 Mton),
  • Contruction materials Sawn timber (80 Mton),
    Engineered wood products (1 Mton), Insulation (52
    Mton), Fibre/boards (40 Mton)

Potential future demand for biomaterials
Source Faaij et al., 2000 (GRAIN study)
  • Biomass
  • wheat or SR wood
  • Bioenergy
  • heat and electricity
  • By-products
  • fodder, gypsum
  • Products
  • PLA packaging or fibers
  • Substitution
  • reference applications
  • BTM recycling
  • Waste treatment
  • incineration or digestion
  • Case1
  • Multi-functional
  • PLA bio-refinery
  • system in Poland

Chain analysis
  • Performance of every part of biomass system
  • Products, by-products and electricity substitute
    reference products
  • Different system configurations compared, e.g.
    intense agriculture, no recycling
  • Parameters
  • Costs,
  • Savings of non-renewable energy consumption
  • GHG emission reduction
  • gt per kg PLA and per ha biomass production

demand for land demand for
Market analysis
  • Price of products and land depend on demand
  • literature estimates of elasticity based on
    empirical data and economic models

Results of chain analysis
Results of market analysis
Source Dornburg, Faaij 2004
Selected Technologies
  • Criteria
  • potentially large market volume in the year 2015
  • reduces a large amount of GHG emissions per unit
  • of biomass used
  • rather low initial GHG emission mitigation costs.
  • Two Material and two energy uses
  • (incl. use of residues and waste-to-energy
  • PLA
  • MDF Board
  • Methanol as transportation fuel
  • Electricity

Biomass potential on country level (in EJ).
Residues energy crops (Willow) 5 scenarios
from open trade to ecological agriculture
Biomass and GHG emission mitigation supply curves
for Poland
Source Dornburg, Faaij 2004
Example V1 Scenario (A1)
'Integral' GHG emission mitigation cost supply
curves for the different scenarios
Source Dornburg, Faaij 2004
Key concepts for large scale bio-refining
  • Improved systems connected to Forestry and paper
    pulp industry (paper, construction, power,
    transport fuels).
  • Biochemical systems with ethanol as key output
    (chemicals, plastics, power, transport fuels).
  • C1-chemistry based on gasification (co-use with
    fossil fuels). (chemicals, transport fuels,

remarks (I)
  • Large, economic biomass potentials (but needs
    complex, sustainable, development and a working
    international market).
  • Competitive biomass-technology combinations
    within reach for the world market (but needs
    serious, consistent development and market
  • Biorefining offers advantages (but those should
    not be over-estimated (limited market volumes and
    price elasticity effects).

remarks (II)
  • Large scale and flexible concepts (with respect
    to feedstock and outputs)
  • Costs on shorter term perhaps less important
  • Different concepts serve different markets.
  • Combination of biomass and fossil fuel fed
    conversion platforms offer strong flexibility and
    can respond to CO2 price up to negative emissions
    with CCS.

Sustainability of bio-energy elements
  • Pre-conditions and concepts for a framework
  • Identifying, formulating and using.
    sustainability criteria for bio-energy.
  • Impact of criteria on potentials and costs
  • Country examples (Brazil, Ukraine).
  • Some suggestions

This group of pictures is only to recall the
variety of bioenergy sources,technologies and
social and scientific implications. Bioenergy
has to do with
it is about people, resources and knowledge
crop development and selection, land tenure
issues, biodiversity impacts, rural
Areas of concern relevant for sustainability of
the biomass production and trading chains
  • General criteria
  • e.g. Traceability
  • Avoidance of leakage effects

Economic criteria e.g. Viability of the
business Yields
Social criteria e.g. Labor conditions Human
safety and health .
Ecological criteria e.g. Preservation of existing
sensitive ecosystems Conservation of ground and
surface water ..
?Many criteria, but quantitative and measureable
indicators are often missing
Lewandowski Faaij, 2004
Dealing with criteria
  • Common understanding criteria, framework and
    procedures (international level).
  • Determine criteria (levels) for regional
    conditions and their respective weight.
  • Participatory approaches with (regional/national)
    stakeholders seems best (but not perfect) model
    to date.
  • Implement sound monitoring and verification not
    prohibitive for market parties (weak spot in
    certification in general!)

Qualitative Assessment
Sustainability criteria
Economic criteria Economic viability of
bioenergy production Long term perspective
Strength and diversification of local
economy Reliability of resources Yields No
blocking of other desirable developments
Ecological criteria Protection of the
atmosphere Preservation of existing sensitive
ecosystems Conservation of biodiversity Conserva
tion of soil erosion and fertility Conservation
of ground and surface water Combating of
deforestation Combating desertification and
drought Landscape view Conservation of
non-renewable resources Waste management
Environmental additionally
127 criteria!
Social criteria Labor conditions Protection of
human safety and health Rights of children,
women, indigenous people Access to resources
ensuring adequate quality of life Food and
energy supply and safety Capacity building
Combating Poverty Democratic participation
Land ownership Community (institutional)
well-being Fair trade conditions
50 criteria included
12 criteria analysed
General criteria Compliance with laws and
international agreements Traceability
Avoidance of leakage effects Strengthening the
role of non-governmental organisations Improvement
of conditions at local level
Sustainability criteria
  • 12 criteria included ? 3 key areas of concern 
  • land use
  • social issues
  • natural resources environment
  • first effort (no existing certification systems)
  • no definition on what is sustainable or not!
  • strict and loose set of criteria are included

Operationalisation of sustainability criteria
land availability
deforestation competition with food
production biodiversity soil erosion fresh
water nutrient leaching pollution from
chemicals employment child labour wages
cost supply curve
crop management system
Smeets et al., 2005
Key elements for assessing future bioenergy
potentials (bottom-up approach)
Source Smeets, Faaij 2004
Regional selection
  • potentials on short term (2015), modest
  • Ukraine central region poplar
  • Brazil southern region eucalyptus

Smeets et al., 2005
  • Loose Strict
  • improvement reduction of erosion rate to
    natural soil formation rate
  • calculation present soil erosion rates
  • calculation of natural soil formation rates
  • calculation of soil erosion under bioenergy crop
  • average costs to prevent soil erosion

Soil erosion map
Universal Soil Loss Equation (USLE) A R K
LS C P   A soil loss   R rainfall
(intensity, duration, size) K soil
erodibility factor (the cohesive character of a
soil type) LS slope length and slope
gradient factor C cropping cover management
factor P agricultural practice factor
Water use
  • Loose Strict
  • improvement no overuse
  • calculation of evaporation rates current land use
  • calculation of evaporation rates bioenergy crop
  • no costs to prevent overuse were included

Evapotranspiration poplar, Ukraine
Nutrient leaching
  • Loose Strict
  • improvement minimal use
  • nutrient balance for conventional land use is
  • nutrient balance for bioenergy crop production is
  • nutrient losses are reduced by increasing
    fertilizer application

Nutrient leaching (kg/ha/y)
Pollution from chemicals
  • Loose Strict
  • improvement minimal use
  • assessment of pollution for conventional land use
  • assessment of pollution for SRC
  • pollution is reduced by increasing manual and
    mechanical weeding (higher machinery and labour

Table 1. Sustainability scores for agricultural
chemicals use
  • Loose Strict
  • minimum wage average wage
  • labour costs are included in the costs of
    bioenergy crop production

Child labour
  • Loose Strict
  • not allowed not allowed
  • (no costs included) (costs included)
  • estimate childrens wages included in the wage
    of parents
  • estimate costs for schooling included in labour

  • Loose Strict
  • not included national average
  • national average costs per average family are
    added up to the labour costs

Health care
  • Loose Strict
  • not included national average
  • national average costs per average family are
    added up to the labour costs

Cost supply curve Brazil with sustainability

Smeets et al., 2005
Cost supply curve Ukraine with sustainability

Smeets et al., 2005
Indicative cost impacts of applying
sustainability criteria
Smeets et al., 2005
Closing remarks
  • Sustainable biomass production achieving multiple
    benefits is possible (but needs strong frameworks
    and control of market forces).
  • Diversity in ecological and socio-economic
    conditions to be recognized (asking for regional
    approaches in a global setting stakeholder
    approaches (PIA) seem best model).
  • Sense of urgency is needed market forces are
    already steering development of international
    bio-energy markets.

Further actions
  • Considerable knowledge base to build on (see
    given examples learn from experience!)
  • International consensus and collaboration, for
    example on sustainability frameworks.
  • Flagship projects (needed to demonstrate multiple
    benefits under different conditions gradual
    proces optimize over time).