Ahmed Al-Dallal

4 Questions 9 Answers 0 Followers

Questions related from Ahmed Al-Dallal

How I can get rid of the foam that will generate from using surface active agent in internal loop airlift bioreactors?

I am studying the effect of surface active agent concentration (1-50 ppm) on the hold-up and mixing time in an internal loop airlift bioreactors. the surface active agent used is "Sodium dodecyl...

27 November 2016 3,918 12 View

Why in the batch Dissolved air flotation process for the removal of chromium ion from waste water, a flooding from the flotation cell happened?

I prepared a synthetic waste water containing potassium dichromate. After preparation of the feed, a coagulant (PAC) was added. Then the resulting wastewater (after adjusting the pH to 7) was...

05 April 2016 7,571 2 View

What is the best method for cleaning ceramic membranes?

I am using ceramic membranes of 100 and 200 nm pore size for separation of oil from produced water of 500 ppm oil. There are many methods in literature. I want the simplest method using NaOH solution.

10 February 2016 5,363 1 View

What is the concentration of Ca(OH)2 (solution or suspension) used as coagulant in wastewater treatment?

The solubility of Ca(OH)2 in water is about 1.5 g/l. In order to use Ca(OH)2 as a coagulant , do we use 1.5 g/l or we use larger concentration (5 or 10 g/l), i.e. Ca(OH)2 in suspension. Using...

10 February 2016 8,006 3 View