Heather Mercado 10-7-09
Science Daily, http://www.sciencedaily.com/releases/2009/10/091005161332.htm , October 6,2009
In this article it tells how scientists have found a way to renew hydrogen. This was found by an electrolysis system. There is a refrigerator-sized hydrogen generator will take winery wastewater, and using bacteria and a small amount of electrical energy, this will convert the organic material into hydrogen. This was a demonstration to prove how we can continuously generate renewable hydrogen. An environmental professor said “The hydrogen produced will be vented except for a small amount that will be used in a hydrogen fuel cell.” The demonstration microbial electrolysis plant is a continuous flow system that will process about 1,000 liters of wastewater a day. The professor used electrode pairs consisting of one carbon anode and one stainless steel cathode in his system rather than an electrode coated with a precious metal like platinum or gold. If the voltage produced by the bacteria is slightly increased, hydrogen gas is produced electrochemically on the stainless steel cathode. The demonstration plant is made up of 24 modules. Each module has six pairs of electrodes. The bacteria that work in the electrolysis cells will consume either of these organic materials.
This article was important to me because I thought it was interesting how scientists came up with a way
to renew hydrogen from wastewater. I chose this article because I am very involved with recycling materials, and I thought it was interesting that now we will be like recycling hydrogen, from something so simple as wastewater.
This article was good however, I think it had to tell more about how the process of renewing hydrogen is done, like what do they do to the wastewater that makes it turn into hydrogen. Also it needed to be more specific and more detailed. I would have really liked to learn more about how hydrogen is renewed, and less about what is in the electrodes, which was mainly what the article focused on.
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This was a very well presented article, for many reasons. The first reason is that Heather was able to show all of the facts needed while keeping the article brief. Another reason was that the overall article flowed well together, not usually in halting sentences. Finally, it seems from the review that Heather really read the article and went into the details. However, I wasn't familiar with some of the terms used in the review. Heather could have explained them to use before using them. Also, she did not elaborate about whether it will be used in the near future or whether it is a work in progress. I was impressed by this review because Heather used a very difficult article to do her review.
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