Archive for the ‘Membrane Theses’ Category
Thursday, August 9th, 2007
I am now reading "Removal of color substances using photocatalytic oxidation for membrane filtration processes" for deeper understanding of what membrane is capable of. The study was aimed to determine the effectivity of UV/TiO2/H2O2 to remove color. So the technique can remove TOC at 38% and color 400 at 89%. ...
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Wednesday, August 8th, 2007
Wow, it has been more than 1 month of my absence updating this blog. I am now busy to submit my paper. The paper is concentration to discuss the advantage and the plus of my ceramic membrane. So first step I want to compose for my paper is to define ...
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Saturday, June 23rd, 2007
Right, this post is actually being made because of my other post about Between TiO2 and UV254 to contribute fouling and performance. If you look at the paragraph 2, it tells everything about the problem of the permeability. Im gonna try again to define the problem.
Well, permeability as I already ...
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Friday, June 22nd, 2007
Between TiO2 and UV254 which one contributes more towards fouling? This question that I would like to discuss in this post. The answer at this time will solely based on my own experience. From what I have before about permeability, it is important factor to be considered. Because as I ...
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Wednesday, June 20th, 2007
So I read this paper, and found something valuable there. Photocatalysis is often used for treating water organic pollutants. Titanium dioxide is usually used because it is stable and inexpensive. This paper stated that one author observed that increasing the initial pH of phenol, increases the decomposition rate, reaching max ...
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Saturday, June 16th, 2007
In this post I want to know about the flux recovery rate. From the book Basic Principles of Membrane Technology I found out the explanation about recovery rate. It define the ratio between qp and qr. Qp is permeate flow rate while Qr is feed stream flow rate. Before I ...
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Friday, June 15th, 2007
This post is dedicated to answer several questions raised why TiO2 being a popular photocatalyst and thus often being used for photocatalysis and photodegradation any unwanted compounds or chemicals including microorganism, organic particles.
I just found in a paper of Weimin Xi (2001), he stated that TiO2 is having considerable photocatalytic ...
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Friday, June 15th, 2007
I do not care if this post will contain only a couple hundred words. I just found an interesting definition of cake formation on the membrane surface. As you probably aware, this cake formation along with pore blockage, concentration polarization have caused fouling, sort of clogging in conventional filter, which ...
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Sunday, June 10th, 2007
Interesting question is raised because that result that what I have got. Interesting, in one side it is known that the coating of TiO2 has caused higher affinity of membrane surface. In my opinion higher affinity, more or less, means higher permeability, higher chance that more water passes the pore ...
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Thursday, June 7th, 2007
Combine with microfiltration, ultrafiltration (UF) is a low pressure membrane. UF is usually used for potable water treatment, biological wastewater treatment and also for ultrapure water production. The latter is common method for metal or electronic industries. UF typically operates within 40-1000 kPa (5.8-145 psi) (0.4-10 bar) having molecular weight ...
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