Uddipta Nath

9 Questions 14 Answers 0 Followers

Questions related from Uddipta Nath

How long does it take for lead to precipitate in lead nitrate solution (lead nitrate + distilled water)?

I want to prepare 1000 ppm lead nitrate stock solution in distilled water. I am concern that storing it for a brief period say, 4-5 days or 1 week may lead to precipitation of lead. Please explain...

27 March 2019 669 4 View

What should be preferred, a shorter degassing time of 3-6 hrs or a longer time of 10-14 hrs?

I want to do BET analysis for samples such as agricultural biomass derived char (biochar) and also alkali (KOH) activated Bio chars. how long must be the degassing time for both bio char and...

11 February 2019 4,909 15 View

How effective is cold alkali process in enhancing biochar surface area?

If biochars are activated with cold alkali (KOH) process, will it enhance the surface area. how effective will it be?

11 February 2019 9,381 0 View

Does alkali activation (KOH activation) Increases BET surface area?

I am planning to prepare activated bio char, activating it with KOH. I am planning to follow the method that includes no heating. I wanted to know will it rally increase the BET surface area? If...

28 January 2019 9,852 17 View

In what basis should I select the initial concentration range of lead nitrate for performing adsorption?

I am performing adsorption experiments to remove lead ions on an bio-based adsorbent. I am optimising the parameters such as initial ion concentration,pH etc using Response surface methodology. I...

23 November 2018 2,470 4 View

What is the lower and upper permissible limit of lead in Industrial wastewater of India?

i have to perform adsorption of lead by taking biochar as adsorbent. Therefore i have to set initial concentration range for synthesise lead nitrate solution which would be used for adsorption...

22 November 2018 9,646 3 View

What chemical/physical properties should biochar and biomass feed stock should contain for better cation exchange capacity?

I am adsorbing heavy metals such as lead, on biochar surface, and thus properties like cation exchange capacity, complexes of metal, etc are concerned. I would like to know, what are the chemical/...

01 November 2018 5,709 3 View

What does O/C, H/C, C/N ratios indicate in a biochar?

I am using biochar for heavy metal sorption. I did CHNS analysis and got wt% of C,H,N,S. I have calculated O/C, H/C, C/N and obtained different values for different samples at different pyrolysis...

23 October 2018 2,566 16 View

What is the significance of broad peak and narrow/sharp peak in FTIR spectroscopy?

I have done FTIR for Rice husk biochar prepared at 3000C and 4000C... I found out that a broad/wide peak at 3428.90 cm-1 for 3000 C and the peak tends to linearity at 4000 C. Also I have found a...

11 October 2018 8,357 10 View