Wednesday, September 25, 2013

Why Anodizing Is Considered Environment-Friendly Process

By Roy van Rivero


One of the reasons why anodizing is considered a promising process is that it is more environment-friendly than any other processes available in the metal finishing industry. It is but this feature makes it relevant most especially these days where climate change issues are a hot topic.

I have enumerated below some of specific reasons why anodizing provides environment-friendly benefits as claimed by a number of companies in the industry. Check out the following:

* The use of simple water-based chemicals - this is one of the reasons why anodizing is considered environment-friendly; the use of simple water-based chemicals produces no harm to both people and the surroundings; toxic organics like halogenated hydrocarbons is not used in the process.

* An acceleration of a natural oxidation process - this is, in other words, means it does not produce harmful or hazardous by-products and thus ensure no damage to human health or the environment.

* Produces finish that is chemically stable - the resulting finish does not decompose (or at least not easily ruined in time); it is non-toxic and heat-resistant to the melting point of aluminum (1,221 degrees Fahrenheit)

* Produces recyclable liquid by-products - since the liquid by-products are recyclable, they can be reused for another set of anodizing process (note: by-products are the secondary products produced during the process)

* Produces harmless primary by-products - aluminum hydroxide and aluminum sulfate are primary products that are produced by the process; they are not harmful and can be used as filters in the sewage treatment process.

* Solid by-products has other uses - some example of solid by-products produced in anodizing process can be used in aluminum manufacturing, for cosmetics reasons, for news print.

* Emits no ozone-producing solvents - with anodizing process, rest assured that it does not contribute to the worsening of our ozone layer, which is, again, relevant to the issue of climate change nowadays.

* Anodizing as energy-saving catalyst - generally, anodizing is applied to aluminum alloys and this provides energy-saving advantage as well as environment safety. The reason is that Aluminum metal is a good electricity conductor while the anodic coating functions as good insulator. These properties substantially contribute to a product longer lifespan and energy demand reduction.

So, these are just few reasons why anodizing has an advantage over other metal finishing processes. It, indeed, plays a crucial role in the industry, environment-wise -- not to mention the benefits it gives in producing quality finish.




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