STANDARDISATION ACTIVITIES RELATED TO MEASURING BIODEGRADABILITY OF PLASTICS IN SOIL AND MARINE COND - PowerPoint PPT Presentation

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STANDARDISATION ACTIVITIES RELATED TO MEASURING BIODEGRADABILITY OF PLASTICS IN SOIL AND MARINE COND

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COMPOST SOIL SWEET WATER MARINE WATER. ANAEROBIC DIGESTION. SOIL ... RESIDUE AFTER COMPOSTING. SOIL : BIODEGRADATION TESTS. TRANSFERABILITY OF RESULTS : ... – PowerPoint PPT presentation

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Title: STANDARDISATION ACTIVITIES RELATED TO MEASURING BIODEGRADABILITY OF PLASTICS IN SOIL AND MARINE COND


1
STANDARDISATION ACTIVITIES RELATED TO MEASURING
BIODEGRADABILITY OF PLASTICS IN SOIL AND MARINE
CONDITIONS
BIOPLASTICS York - 2002
Bruno De Wilde Organic Waste Systems (OWS)
nv Gent-Belgium
2
ORGANIC WASTE SYSTEMS (OWS) nv
  • ACTIVITIES/ DRANCO - SORDISEP TECHNOLOGY
  • SERVICES OPERATION OF BIOGASIFICATION
    PLANTS BIODEGRADABILITY - COMPOSTABILITY TESTIN
    G CONSULTING
  • HEAD OFFICE GENT - BELGIUM
  • AFFILIATE OWS Inc - DAYTON - OHIO - USA
  • PARTNER DJK International Inc. - TOKYO -
    JAPAN

3
SPECIFICATIONS FOR BIOPLASTIC PRODUCTS
HOUSEHOLD WASTE
SOIL
MARINE
WATER
AEROBIC COMPOSTING
ANAEROBIC BIOGASIFICATION
EN 13432 ASTM D.6400-99 DIN V 54900
?
?
?
?
4
NEED FOR NORMS COMMUNICATION
5
PROPERTIES OF GOOD STANDARDS
  • SCIENTIFIC BASIS E.G. ROUND ROBIN, VALIDITY
    CRITERIA
  • GENERAL APPLICABILITY
  • EVOLUTION IN TIME
  • QUALITY CONTROL AND ASSURANCE
  • IMPARTIALITY - BELIEVABILITY

6
STANDARDISATION COMMITTEE
GLOBAL ISO TEST METHOD
N. AMERICA ASTM TEST METHODS (US
Navy ---gt Marine)
EUROPE (CEN TC261 SC4 WG2 Packaging)
CEN TC 249 WG9 Plastics METHODS
CRITERIA
7
AGGRESSIVENESS OF ENVIRONMENT
COMPOST gt SOIL gt SWEET WATER gt MARINE WATER
ANAEROBIC DIGESTION
8
SOIL
  • TEMPERATURE AMBIENT, lt 40 C (no
    thermal hydrolysis)
  • MICRO-ORGANISMS BACTERIA FUNGI
    ACTINOMYCETES (different from aqueous
    conditions)

9
ACCEPTANCE CRITERIA
1. RATIONALE 2. TESTS 3. PASS LEVELS
10
ACCEPTANCE OF BIOPLASTICS IN SOIL RATIONALE
  • COMPLETE BIODEGRADATION
  • NO HARMFUL EFFECT (heavy metals - ecotoxicity)

(No disintegration , included in product
characteristics)
11
SOIL BIODEGRADATION TESTS
1) ISO 11266 Soil quality - Guidance on
laboratory testing for biodegradation of
organic chemicals in soil under aerobic
conditions
  • ORGANIC CHEMICALS
  • SOIL HISTORY - CHARACTERISTICS - lt 2 mm
  • POSSIBILITY FOR C14
  • CARE FOR ALKALINE SOILS
  • AMBIENT TEMPERATURE
  • 4 MONTHS
  • FLEXIBILITY OF TEST CONDITIONS

12
SOIL BIODEGRADATION TESTS
  • PLASTICS
  • BOD / CO2
  • 20 - 25 C
  • C / N 40 / 1
  • WHC 40 - 60 C
  • Ph 6 -8

13
SOIL BIODEGRADATION TESTS
3) OECD 304 A C14 4) ASTM D.5988-96 ANALOGOUS
RESIDUE AFTER COMPOSTING
14
SOIL BIODEGRADATION TESTS
  • TRANSFERABILITY OF RESULTS SAME
    RESULT IN DIFFERENT SOIL ?
  • VALIDATION OF TEST (POSITIVE REFERENCE)
  • PREREQUISITES SOIL

15
ACCEPTANCE OF BIOPLASTICS IN SOIL
1) BIODEGRADATION ? 90 ? DURATION
DEPENDING OF APPLICATION 2) SOIL QUALITY ?
CHEMICAL HEAVY METALS ? ECOTOXICITY
16
MARINE ENVIRONMENT
  • TEMPERATURE AMBIENT - COLD
  • MICRO-ORGANISMS BACTERIA (DILUTE)
  • DISTINCTION COASTAL vs OPEN SEA SOLUBLE
    vs PARTICULATE
  • Example oil used for drilling rig

17
MARINE BIODEGRADATION
  • CEN NO PRIORITY
  • ASTM (US NAVY) NEW METHODS D.6691 -
    DEFINED MICROBIAL CONSORTIUM D.6692 -
    RADIOLABELLED OPTION TO STURM TEST

18
ANAEROBIC BIOGASIFICATION some facts
1) GAINING IMPORTANCE AS BIOLOGICAL
WASTE TREATMENT OPTION ( 5 ? 25 ) 2)
AEROBIC ? ANAEROBIC BIODEGRADABILITY . ( Euro
project 11 bioplastics Aerobic10 - Anaerobic
6) 3) COMMERCIAL ANAEROBIC BIOGASIFICATION
ANAEROBIC AEROBIC PHASE
19
INSTALLED BIOGASIFICATION CAPACITY
20
ACCEPTANCE OF BIOPLASTICSIN ANAEROBIC
BIOGASIFICATION RATIONALE
? PREREQUISITE AEROBIC COMPOSTABILITY ?
BIODEGRADATION NEEDED ? ? DISINTEGRATION
SPECIFIC REQUIREMENT ? COMPOST QUALITY
COVERED
21
ANAEROBIC BIOGASIFICATION TEST METHODS
? ISO DIS 15985 Plastics - Evaluation of the
ultimate anaerobic biodegrada- bility and
disintegration under high-solids anaerobic
digestion conditions. Method by analysis of
released biogas ? ISO DIS 14853 Plastics -
Determination of the ultimate anaerobic
biodegrada- bility in an aqueous system - Method
by measurement of biogas production ?
DISINTEGRATION ? Combination of Iso Dis15985
Iso 14855 ? Sieving lt 2 mm 90
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