Why CDOM concentrations are much higher in fresh waters and estuaries than in the open ocean?

CDOM is the colored dissolved organic matter. What makes the fresh water higher in CDOM concentrations than the ocean?

05 June 2019 128 4 View

Why does ammonium concentration inhibit the growth of NOB, although it is not used as their energy source?

Ammonium is neither consumed nor produced in nitrite oxidation, how does ammonium concentration suppress NOB and why?

04 May 2017 6,084 4 View

Any brief and concise explanation of the relationship of Dirac, Kronecker delta, and Heaviside step function?

03 April 2017 9,984 7 View

Is the saturation constant for ammonium in the ASM3 model meant for ammonium-N or both ammonia+ammonium N ?

The half-saturation constant of ammonium in Activated sludge model #3 is given as ammonium, is it for ammonium only or both NH4 +NH3?

01 February 2017 1,441 0 View

Is the activation energy that is calculated from the observations of the maximum growth rate of microorganisms remains constant?

08 September 2016 2,567 1 View

Why is the yield (cell production/ammonium consumption) higher in the Annamox than in nitrification?

Both Annamox bacteria and nitrifiers are slow growers and they both grow on ammonium as their energy source, nitrification is aerobic and annamox is anaerobic , shouldn't the yield in...

10 November 2015 5,353 2 View

Why nitrogen fixation and denitrification are non-reversible reactions whereas nitrification is a reversible reaction?

05 June 2015 7,965 2 View

Why anammox and nitrification need additional electrons for the ammonium reaction?

These two processes are involved in the nitrogen cycle. I wonder why these two pathways need additional electrons !

01 February 2015 4,374 3 View

Can we represent a non-periodic function by a Fourier series?

01 February 2015 3,791 15 View

Can we consider only the kinetics of the nitrite oxidizing bacteria when modelling nitrification pathway?

Since the nitrite produced during the partial nitrification is virtually immediately further nitrified to nitrate. And the rate of conversion of ammonia to nitrite by ammonia oxidizing bacteria is...

01 February 2015 8,124 3 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How can we theoretically calculate Elemental analysis(percentage) of atoms in covalent organic framework?

For example in one research article the Elemental analysis values of COF-TpPa-1 ( Triformylphloroglucinol (Tp) (63 mg, 0.3 mmol), Paraphenylenediamine (Pa-1) (48 mg, 0.45 mmol) are as follows...

24 February 2021 1,265 6 View

How to Control Whiteflies in coconut leaves?

24 February 2021 1,005 1 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View

Any Homemade Organic Synthesis Practices?

Hi everyone, I am a teacher of Heterocycles Synthesis, Is there a home practice that you recommend for undergraduate students? A simulator would also be useful Due to the pandemic, students...

18 February 2021 2,769 4 View

How to find the capacitive response frequency from the impedance plot?

I have done electrochemical impedance by using cyclic voltammetry for one organic material. from that, I plotted bode diagram. but actually, I am very confused about how to find the capacitive...

18 February 2021 3,023 3 View

How to predict the reaction pathway for electro organic synthesis?

Can anyone recommend some any software/models available that can predict substance reactivities and the reaction yield under a specific set of reaction conditions process and proposing pathways to...

17 February 2021 2,383 3 View

Can bio-decomposer be a successful alternative to reduce residue burning?

To maintain the proper crop plan most of the times there is not enough time to make the field ready for the next crop. In this particular context , can bio-decompser be a solution? What about...

16 February 2021 7,068 24 View