Azka Siddiqui

12 Questions 18 Answers 0 Followers

Questions related from Azka Siddiqui

What is the typical shrinkage of woody biomass after pyrolysis?

Just for rough estimation for planning my experiments, I would like to know the size reduction of pyrolyzed woody biomass after complete devolatilization leaving only biochar behind.... I have...

28 February 2023 6,404 4 View

How can I calculate the STATIC, BUBBLING, and MAXIMUM BED HEIGHT for bubbling fluidized bed reactor?

I want to design the distributor plate and calculate the bubbles size and velocities for the reactor. The purpose of calculation is just to have an estimate before going any further with building...

20 February 2023 1,238 5 View

How to calculate elutriation velocity of particles in a fluidized bed reactor?

Is there any way or correlation to calculate elutriation velocity without experimental calculation of elutriation constant?

01 February 2023 472 4 View

Difference between MST (Magnetic Solid Tracing) and MPT (Magnetic Particle Tracking)?

What is the difference between MST and MPT and how to realize when to use MST and when to use MPT.... Isn't MST most appropriate to study the hydrodynamics of fluidized bed reactors as it...

31 January 2023 2,598 1 View

Is it necessary to have inert bed material in bubbling fluidized bed reactors? Can we use fuel particles only?

Is it possible to fluidize fuel particles in BFB without bed material or BFB must have to have inert bed material along with fuel particles? If so, then why? I have previously worked with...

28 December 2022 7,656 5 View

How to perform carbon balance for pyrolysis of sewage sludge?

I am working on the pyrolysis of sewage sludge in a fluidized bed reactor. I want to perform carbon balance for it. I tried doing it by calculating the carbon content in sewage sludge (Fixed...

06 December 2018 1,468 0 View

FTIR shows a peak near 2514 cm-1. Which peak is that?

We performed pyrolysis of sewage sludge with and without catalysts in a FBP. The catalysts CaO showed an extensive sets of peaks for both temperatures (650 and 850). I looked for this peak but...

30 September 2018 8,219 5 View

What is the difference between GAS CONTENT and GAS YIELD?

I have two set of data, one is the the gas content w.r.t to temperature and the other is gas yield w.r.t to temperature. I cannot correlate the behaviour. The two graphs tells the very different...

17 September 2018 2,574 5 View

Why did the yield of CO2 show a fluctuating trait at higher temperatures?

Pyrolysis of sewage sludge is carried out in a fluidized bed reactor. The non-condensable gases yield is shown in the attached figure. Generally, the yield of CO2 increases as the temperature...

24 August 2018 4,253 4 View

How to separate tar, oil and water in a laboratory?

We are working with the pyrolysis of different wastes. The condensate mixture includes tar, oil and water. Before, we used to separate oil and water only from the condensates. But to improve our...

10 August 2018 721 7 View

Why does Char yield increase after 850°C during the conventional pyrolysis of sewage sludge?

We are doing conventional pyrolysis of sewage sludge. The other products showed the common traits, while char yield decreases first until 850 °C and started to increase at later temperatures. I...

08 August 2018 4,035 7 View

Why are there bubbles in condensing bottles, during pyrolysis of sewage sludge?

We are pyrolyzing sewage sludge in a fluidized bed pyrolyzer. We are using nitrogen as an inert atmosphere. Before every experiment we check the purging of lines by checking the bubbles in water...

17 May 2018 1,959 3 View