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Questions related from Chingyeh Ong
May I know what is the minimum acceptable R square or the range of R square (0.XX) for biological wastewater treatment model ? I am evaluating the performance of lab-scale bioreactor in treating...
07 July 2018 729 3 View
Dear all, may I know what is the minimum acceptable R square or the range of R square (0.XX) for biological wastewater treatment model ?Thank you.
07 July 2018 7,306 4 View
Hi Everyone, I am using activated sludge system to treat the phenol containing wastewater. There are 3 variables throughout the study i.e., phenol concentration, dissolved oxygen level and...
07 July 2018 8,769 3 View
Hi everyone, may I know how can I clean a contaminated HPLC column (C18) as the chromatogram contained undesirable peaks? Thank you.
10 October 2017 4,949 14 View
Can anyone explain to me about why there is a difference between dye powder and aqueous dye solution (1000 ppm) in FTIR spectra? Why the peaks in aqueous dye solution of FTIR spectrum is lesser...
06 June 2017 2,834 4 View
How can I modify the surface of polymer carriers for moving bed biofilm reactor (MBBR) in order to enhance their hydrophilicity performances. Thank you.
04 April 2016 345 7 View
Formaldehyde treatment is used to remove all those phenolic compounds while extracting the alginate from the brown seaweed. My purpose is to fabricate a biomaterial by merging the alginate that...
11 November 2014 8,826 3 View
Does anyone know why there is always a 3 phases separator on the Hysys simulator but not 2 phases separator for decanter? My process is esterification process (Acetic Acid +Ethanol Ethyl...
08 August 2014 1,670 4 View
Could anyone explain for me about why normally we are testing the properties of bio-composite collagen/alginate (i.e porosity, tensile measurement and so on) by 3D scaffold (after undergo...
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