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Adsorption isotherms

Product No: P3040801

Principle

In general, the term adsorption is used to describe the attachment of gases or dissolved substances to the surface of a solid or liquid. At constant temperature, the quantity of absorbed substances is a function of the type of system investigated and the partial pressure and / or concentration of the substance concerned. The correlation is described by a number of adsorption isotherms. Theri validity is to be investigated experimentally.

Tasks

Determine the residual equilibrium concentrations of citric acid after stirring solutions of differing initial concentrations with a constant mass of activated carbon.
Use the measurement results to determine which of the adsorption isotherm is valid for the given system.

What you can learn about

Adsorbent and adsorbate
Henry Freundlich and Langmuir adsorption isotherms
Volumetry

Materiallist (Excerpt)	Product	Amount
Set of Precision Balance Sartorius CPA 623S and measure software, 230 V	49224-88	1
Magnetic stirrer Mini / MST	47334-93	2
Filtration stand for 2 funnels	33401-88	1
Retort stand, h 750 mm	37694-00	2
Burette, lateral stopcock, Schellbach, 50 ml, graduations 0, ml	36513-01	1
Burette clamp, roller mount.,2pl.	37720-00	1
Activated carbon,granular 500 g	30011-50	1
Caustic soda sol.,1.0M 1000 ml	48329-70	1
Water, distilled 5 l	31246-81	1
Volumetric flask 1000ml, IGJ24/29	36552-00	1
Citric acid 250 g	30063-25	1
Pipette dish	36589-00	1
Separator f.magnetic bars	35680-03	1
Pipettor	36592-00	1
Volumetric flask 250 ml, IGJ14/23	36550-00	6
Phenolphthalein, 0,5% soution in ethanol, 100 ml	31715-10	1
Pasteur pipettes, 250 pcs	36590-00	1
Volumetric pipette, 100 ml	36582-00	1
Erlenmeyer IGJ29/32,boro.,250ml	46126-00	6
Volumetric pipette, 50 ml	36581-00	1
Volumetric pipette, 25 ml	36580-00	1
Rubber caps, 10 pcs	39275-03	1
Erlenmeyer flask,wide neck,250ml	36134-00	7
Glass beaker DURAN®, tall, 100 ml	36002-00	7
Graduated pipette 25 ml	36602-00	1
Volumetric pipette, 10 ml	36578-00	1
Spoon, special steel	33398-00	2
Funnel, glass, top dia. 55 mm	34457-00	7
Circular filter,d 90 mm,100 pcs	32977-03	1
Magnetic stirring bar 30 mm, cylindrical	46299-02	2
Wash bottle, plastic, 500 ml	33931-00	1
Stopper, PP, for IGJ 29/32	47508-00	6
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals	16502-42	1