Archive for March, 2007
Thursday, March 29th, 2007
In this post, I would like to focus the effect of photocatalysis, in this case represented by Titanium dioxide and UV irradiation for organic particle distribution, which is natural organic matter, represented by Dissolved Organic Carbon, humical acid. I would like to know which organic particle size in responsible for ...
Posted in Membrane Theses | No Comments »
Tuesday, March 27th, 2007
As you probably already aware, waste disposal methods had been found from ancient time. Sewers were found in the prehistoric cities of Crete and ancient Assyrian areas. Sewers built by the Romans, although at the first were mainly for carrying storm water, but in practice sewers were used to carry ...
Posted in Environmental Engineering I, Introduction to Environmental Engineering | No Comments »
Sunday, March 25th, 2007
In case you have forgotten, I'd like to remind you that we passed World Water Day in 22 March. This year's theme is "Water Scarcity". In my previous post, indeed I put several rows talking about water scarcity and few pictures of it as an example, when it displayed several ...
Posted in Environmental Diary, News and Issues | No Comments »
Monday, March 19th, 2007
I found this magazine recently, it was on magazines.com website. This is quite interesting since it is not easy to find magazines dedicated fully to environmental condition. Here what they say: About E: The Environmental Magazine: E covers everything environmental "from recycling to rainforests," including climate change, the state ...
Posted in Environmental Products | No Comments »
Friday, March 16th, 2007
On the early application of human waste disposal, nuisance and health problem always be primary effect caused by such activity. Just imagine, often the method of disposal consisted of nothing more than flinging out the content of the pots out the window!
Posted in Environmental Engineering I, Introduction to Environmental Engineering | No Comments »
Thursday, March 15th, 2007
I found this very interesting to find out, how to quantify potential loss, societal cost due to gas emission from our transportation. Let's do the math now!
Posted in Environmental Diary, News and Issues | No Comments »
Wednesday, March 14th, 2007
Right, I am trying to list here what I am planning to do within short time:
At the moment, I am cleaning my all membranes after TiO2-UV batch: 1 kD, 15 and 50 kD, two pieces for each.
Posted in Membrane Theses | No Comments »
Tuesday, March 13th, 2007
There are various methods available to coat TiO2 onto the surface of the membrane. I will explain briefly some of them, and the method I used.
Ion assisted deposition
This method was used for coating on super-hydrophobic porous teflon membrane. The author stated that the coating of TiO2 by the chemical wet ...
Posted in Membrane Theses, Paper Review | No Comments »
Sunday, March 11th, 2007
Impure water is a water that contaminated by unwanted elements. It can be particles, colloids, debris. Of course, for both drinking water or clean water for household activities, these impurities are not wanted. Thus, it is important for us to treat source water to remove these elements. That is why ...
Posted in Environmental Engineering I | No Comments »
Saturday, March 10th, 2007
The result of my experiment employing TiO2-UV was not satisfying. In terms of flux, TiO2-UV membrane showed severe decline after 30, 60, and around 90 minutes. Not only that, the rejection of membrane coated by TiO2 under UV exposure was lower than naked membrane. This probably due to smaller ...
Posted in Membrane Theses | No Comments »
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