Artis Robalds

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Questions related from Artis Robalds

Which are the best review articles for sequential extraction / fractionation of phosphorus in soils ?

There are too many methods for sequential extraction / fractionation procedures for the determination of phosphorus in soils. Which could be to most suitable? P.S. I do not have soil, but...

29 October 2014 5,083 13 View

What is physical sorption (physisorption) and what does it "include"?

So, are there any flaws in the text? Physical sorption results from the electrostatic and van der Waals interactions (forces). Sometimes only van der Waals forces are mentioned. Although...

15 September 2014 7,525 24 View

The meaning of the term "micro-precipitation"?

Term "micro-precipitation" often appears in publications about biosorption. However, I can not find, what are the origins of this term, and what is the definition of this term. What is the...

12 June 2014 7,049 4 View

How to calculate parameters of pseudo-first order kinetic model?

I have found how to calculate parameters of pseudo-second order kinetic model, but bad luck with pseudo-first order model. So, how to calculate qe and k1 from the slope and intercept?

30 May 2014 6,690 66 View

Research article about misuse of terminology, definitions or methodology

I often see that there are mistakes made about terminology and definitions in my field of study (biosorption and biosorbents). In addition, there are some methodological mistakes as well (e.g., in...

31 March 2014 2,278 2 View

Peanut shells, hulls and husks - the use of terminology [in adsorption studies]

Hi! Several authors have use different terms in their adsorption studies - peanut shells, hulls and husks... What is meant by "husk" - is it the same as "shell"? And "hull" is even more...

01 January 1970 9,186 4 View