chee guan Wong

4 Questions 4 Answers 0 Followers

Questions related from chee guan Wong

How can I better remove silica ( about 20 to 70 ppm in both colloidal and dissolved state) in wastewater containing 33wt%PEG?

silica / silicon is an unwanted impurity in our recycling process , how can we better remove silica / silicon without usage of chemicals?

30 January 2015 6,932 5 View

Is there a way to analyse metallic Si in SiC aside from using the Fedorov method?

We tried using Fedorov's method for analyzing metallic Si content in a mixture of silicon carbide, silicon oxide and silicon but each run gives different results due to operator differences and...

31 March 2014 8,372 4 View

Decreases in pH after the addition of DPG to DIW?

pH of pure DPG is around 4-5, DIW around 5.50, but when both are mixed together in 9 part DIW with 1 part vol DPG the pH drops to 3.49. What could be the explanation for this observed change in pH?

27 March 2014 624 4 View

What are the recycling methods for slurry after diamond wire sawing?

I would like to know if there are any recycling methods of spent slurry after slicing silicon ingots using diamond wire sawing.

13 November 2013 7,202 1 View