a a a a a a a a a a a a?

Thank you very much.

04 May 2016 6,484 1 View

a a a a a a a a a a a ?

Thank you.

11 December 2015 6,751 0 View

a a a a a a a a a a a ?

Thank you very much.

11 December 2015 4,747 1 View

Can someone tell me about the origin of sulfates in domestic wastewater and concentration?

07 August 2014 3,976 7 View

a a a a a a a a a a a a a?

I am looking for

05 June 2014 5,111 4 View

a a a a a a a a a a a a a ?

By simple decantation, can

04 May 2014 9,153 5 View

a a a a a a a a a a a a a ?

By any techn

04 May 2014 8,065 11 View

Can someone share chemical reactions involved in the assay for determination of sulphide in waste water by iodometric method?

After acidification of the sample, the sulfides are moved in the form of hydrogen sulfide with an inert gas and collected in a solution of zinc acetate. Iodine used in excess, reacts on the...

04 May 2014 2,882 3 View

a a a a a a a a a a ?

I want to eliminate

04 May 2014 4,144 2 View

How can I determine H2S produced by BSR?

03 April 2014 9,118 7 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 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

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 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 is the error of the Txy diagram?

Hi, I know the attached Txy diagram has an error but can't figure it out. Could you please look at the diagrams and explain it to me?

23 February 2021 4,239 1 View