Biodegradable bags are not always environmentally friendly
The problem of plastic waste pollution of ecosystems seemed to be resolved through new biodegradable materials that are beginning to be used for this purpose. However, experts warn of this, warning us that they are not always a solution.
The crux of the matter lies in the very concept of biodegradability, i.e. the ability of some materials decompose without polluting the environment with chemicals.
A non-conducive environment
That may take time to decompose and conditions required for it, often becomes the alternative of bioplastic in a halfway solution.
Or, more precisely, in a bad solution, because although they are biodegradable materials, which can be broken down into natural chemicals through the action of natural agents , they are often not suitable to be carried out the process.
Among others, the sun, that is, the temperature it provides, microorganisms, water, plants or, without going any further, the same animals. In one way or another, one occurs biological process natural. Or maybe not, and this is the problem.
Although you can create the optimum conditions to accelerate, nature can do it alone, but in any case be biodegradable is not synonymous, by itself, not pollution. In short, it will not always be enough to allow a certain amount of time to pass if there is no set of circumstances in order to determine a specific time. The time required for the process begins and ends, -which can mean so long that really can not be said to do a favor to environment-, or simply a series of non – compliance with requirements and disintegration does not take place. In case of propitiation, it may happen that treatments are required that are not always ecological.
While the skin of the fruit usually takes only a few months to decompose and five years the wood, the glass needs thousands of years, while metals like iron does not do it until millions of years pass. In the case of biodegradable plastic, we found a great little drawback : the sea temperature is not sufficiently high to initiate such decomposition, says a recent UN study.
According to the report most of the plastic is too durable, so that degradation in the environment does not occur as we believe when we choose biodegradable plastics. It is not, therefore, a by sustainable alternative.
A lot of these plastics we use as biodegradable bags purchase only decompose at temperatures of about 50 degrees Celsius, and the ocean are not reached.
According to the expert, the best way to solve the problem is reducing its use and collecting more amount of plastic waste then recycle them , especially in the more developed regions of the world where mass consumption of this material has become one Of the most serious environmental problems today, along with climate change or deforestation.
Finally, the UN report lamented that there has been an earlier reaction to tackle this serious problem. “The warnings of what was going to happen were reported in the scientific literature in the early 1970s, with little reaction from the scientific community.”