산업동향
Bioplastics may not be as 'sustainable' as claimed
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2008-04-29
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World News
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#Bioplastics
Bioplastics may not be as 'sustainable' as claimed
The worldwide effort by supermarkets and industry to replace conventional oil-based plastic with eco-friendly "bioplastics" made from plants is causing environmental problems and consumer confusion, according to a Guardian study.
The substitutes can increase emissions of greenhouse gases on landfill sites, while some need high temperatures to decompose and others cannot be recycled in Britain.
Many of the bioplastics are also contributing to the global food crisis by taking over large areas of land previously used to grow crops for human consumption.
The market for bioplastics, which are made from maize, sugarcane, wheat and other crops, is growing by 20 to 30 percent a year.
The industry, which uses words such as "sustainable", "biodegradable", "compostable" and "recyclable" to describe its products, says bioplastics make carbon savings of 30 to 80 percent compared with conventional oil-based plastics and can extend the shelf life of food.
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