some compost bags certified by BPI cannot be compost (news report download)

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some drawbacks of using compostable plastics

Compostabe biodegradable (starch-based) plastics will degrade and emit CO2 in a landfill if there is enough microbial activity. However, in the depths of a landfill, in the absence of air, it generates copious quantities of methane, which is a powerful greenhouse gas.

compostable plastics: an alternative to polyethylene/polypropylene based plastic bags - a substitute of future plastic material

Compostable plastic is biodegradable but the degradation of the plastic has met certain specified standards (American standard ASTM #D6400-99, the European Standards EN-13432 and DIN V-54900 – all of these standards are in harmony but there are minor differences in the specifics of the measurement standards) relating to the rate of biodegradation, maximum residue of material left at a specific point in time and a requirement for the material to have no harmful impact on the final compost or composting process. For composting to occur in an optimal manner appropriate industrial waste management facilities need to be available. Biodegradable and compostable plastics are usually made from polylactic acid (PLA), often produced from corn starch, and polyhydoxylalkanes (PHA), often produced from bacteria, yeast or plants.

  • Composting: yes to bioplastics
    Composting is currently applied to selected waste that contains only biodegradable organic material. Traditional plastics are banned from composting because they resist degradation and cause contamination. In contrast, biodegradable plastics are allowed, but only if they satisfy criteria established by norms that define compostable materials. Non-compatible materials were composted in the past in the absence of rules and in the anarchy of the definitions and test methods. This caused a lot of harm, especially to the trust of users, and of the technicians responsible for the composting plants. (send a technical inquiry about how to make a decision)

  • Composting
    Composting is the transformation of organic waste into compost, which is obtained in special installations that guarantee correct management of the process. However, composting is based on a spontaneous phenomenon. In the countryside, you may have seen piles of organic material (waste, animal droppings, sawdust, wood shavings, etc.) produce heat and give off steam, as though it were burning without a flame. In fact, the material is not burning, even though the phenomenon that lies behind the production of heat is not so different from combustion. A pile of organic waste is attractive to micro-organisms that are normally present in the environment. If the water content is sufficiently high, the micro-organisms start to consume the nutritional substances, that is, to degrade the organic molecules, producing carbon dioxide, water and heat (biodegradation). At the end of the process, the initial waste is transformed into a substance called compost, which looks and smells like fertile soil, and is sanitized and stable, insofar as it contains no pathogenic microbes or material that decomposes. In the composting plants, this phenomenon is controlled and optimized in order to achieve a high conversion speed, control of the effluent, control of the quality of the final compost, etc.

  • The solution for the compostable fraction of M.S.W. (Municipal Solid Waste)
    Materials, such as kitchen scraps, grass cuttings, waste from canteens, restaurants, etc., contain a lot of water, and decompose quickly. Consequently, they are not suitable for recovering energy by incineration, because the heat is lost in evaporating the water instead of producing electricity. Furthermore, in a landfill, the wet organic materials are the source of considerable environmental problems, such as the production of methane, and possible contamination of the water tables with contaminated percolates. In contrast, treatment of the organic part of solid urban waste (also known as the "wet part") by composting has extremely positive aspects. The production of compost and its use in agriculture completes the environmental cycle broken by urbanization, by the depopulation of the countryside, and by the adoption of intensive farming practices based on the use of inorganic fertilizers in place of the manure used in the past. After being taken from the fields to our supermarkets, the organic material returns to its place of origin in the form of compost, that is, a substance that maintains fertility, prevents erosion of the soil, reduces the washing away of inorganic fertilizers, and blocks the onset of micro-organisms that are pathogenic to plants, just to mention some of the positive aspects found with the use of compost.

Welcome to the degradableplasticbag.com
Our reason for creating jtrend-systems® and promote degradable plastic bags is simple: We insist to provide products, information and inspiration that help people reduce, re-use and recycle. Starting with the controlled-life plastic technology, a simple step of have an insurance coverage of the everyday plastic you use. This creates a "mindset" to make sure when we utilize the advantage of plastic material, we also act responsibly to prevent any pollution it may possible bring to our environment. 

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