Technology Faq Video Equipment
  • (1) Degradation
    An irrevesible process leading to a significant change of the structure of a material, typically characcterized by a loss of properties ( e.g. integrity, molecular weight or structure, mechanical strength) and/or fragmentation. Degradation is affected by environment conditions and proceed over a period of time comprising one more steps.
    Potential of a mterial to be degraded. Degradability of a mterial shall be specified and measured by standard test methods in order to determine its classification with respect to waste management.
    (3) Biodegradation
    Degradation caused by biological activity especially by enzymatic action leading to a significant change in the chemical structure of a material.
    (4) Ultimate Biodegradability
    The Breakdown of anorganic chemcial compound by microogranism in the presenceof oxygen to carbon dioxide,water and mineral salts of any other elements present ( minieraliztion) and new biomass or in the absence of oxygen to carbon dioxide, methane,mineral salts and new biomass.
    (5)Degradable Plastic
    A plastic designed to undergo a significant change in its chemcial structure under specific environmental conditions, resulting in a loss of some properties that may be measured by standard test methods appropriate to the plastic and the application in a period of tiem that determines its classification
    (6) Biodegradable Plastics
    A degradable plastic in which the degradable results from the action of naturally occuring microorganisms such as bacteria, fungi, and alage; finally as carbon dioxide, water, and mineral salts and new biomass.
    (7) Compost
    Organic soil conditioner obtained by biodegradation of a mixture consisiting principally of vegetable residues, occasionall with other organic and have a limited mineral content.
    (8) Composting
    Aerobic process designed to produce compost
    (9) Compostability
    Ability of a material to be biodegradable in a composting process.Notes: To claim compostability it must have been demonstrated that a materialcan be biodegradable and disintegrated in a composting system ( as can be shown by standard test methods) and completes its biodegradation during the end-use of the compost. The compost must meet the relevant quality criteria are e.g. low heavy-metal content, no ecotoxicity, no obviously distinguishable residues.
    (10) What is Biomass?
    Biomass refers to living and recently living biological material used as fuel or industrial production -- fibers, chemicals or heat. Biomass may also include biodegradable wastes that can be burnt as fuel. It excludes organic material which has been transformed by geological processes into substances such as coal or petroleum. Biomass is part of the carbon cycle. Carbon from the atmosphere is converted into biological matter by photosynthesis.Upon decay or combustion the carbon is returned into the atmosphere. Although fossil fuels have their origin in ancient biomass, they are not considered biomass because they contain carbon that has been 'out' of the carbon cycle for a very long time. Their combustion therefore disturbs the carbon dioxide content in the atmosphere, and this is the primary cause of global warming.


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