Amita Shakya

5 Questions 35 Answers 0 Followers

Questions related from Amita Shakya

How to calculate the adsorption capacity of material when the removal is 100% and UV vis reading is either zero or negative?

Hi, I am doing experiments with biochar for Cr(VI) and at 10 and 20 ppm concentration i am getting negative reading or zero reading with UV vis spectrometer. Also, i am using DPC method and no...

15 March 2019 5,625 11 View

Empirical formula of biochar?

Kindly anyone know how to calculate empirical formula for a biochar or activated carbon with the help of C, H, N and O content. I did CHNS analysis of my samples and got the C, H, N, and O...

27 December 2018 9,593 3 View

How to calculate H/Corg and O/Corg ratio for biochar

I did CHNS analysis of my biochar samples ans i have to g=find out these ratio. In some papers i saw they directly calculate it by the %C, %H, %N obtained by CHNS. but in some papers they minus...

02 May 2017 7,479 10 View

Is there any UV spectrophotometric or titration method for analysing cation exchange capacity of biochar ?

I am trying to find out a method to measure CEC of biochar which does not need AAS or ICP for it.

19 September 2016 692 4 View

What should I use to maintain pH range of potassium dichromate solution for chromium adsorption from biochar experiments?

For heavy metal chromium adsorption experiments from biochar how much concentration of sulphuric acid/ NaOH should I use to maintain pH range 1-10 of potassium dichromate soluion? If use of...

24 May 2016 3,116 4 View