Methylene blue adsorption

Graphitic Oxide By Explosion. Carbon prepd by the expln of graphitic oxide has a different structure than any other form of C. Studies with the electron microscope and with X-rays and electron absorption indicate that it consists of very thin graphite layers which show the property of increasing specific resistance with increasing pressure From dems of the methylene blue adsorption and the catalytic activity in synthesizing HBr, iris concluded that the crystal faces are active rather than only the unsatd atoms in the edges of the faces... 

The new composite (SC-155) and some of its precursors and derivatives were characterized by LOI (loss on ignition), XRD ( X ray diffraction), 1R (infrared spectra), BET specific surface area, nitrogen adsorption desorption isotherms, pore size distribution (mercury porosimetry), dynamic methylene blue adsorption and SEM (Scanning Electron... 

C-155 and S-155 materials showed a sponge like structure as the microphotograph of figure 4-B, but when S-155 was submitted to methylene blue adsorption test it did not show adsorption properties C-155 material instead showed a high adsorption activity. The last observation demonstrates that carbon structure is the responsible of the adsorptive behaviour and that the silica structure in this case acts only as an inert skeleton, but at the same time, silica was the responsible of the expanded carbon network developed during the synthesis of the composite. 

Kahr, G., and F. T. Madsen. 1995. Determination of cation exchange capacity and surface area of bentonite, illite, and kaolinite by methylene blue adsorption. Appl. Clay Sci. 

S1M1N2 - specific surface area, measured by the N2 adsorption Wz - volume adsorbed at a relative pressure - 0.95, correspontb to the (microporet-mesopore) volume V ,i - micropore volume Vme - mesopore volume MBads - Methylene Blue adsorption Irads-b adsorption... 

Key words Methylene blue, adsorption, coir pith carbon, isotherms, pH effect, desorption studies... 

N° of Bronsted acidic sites on the external surface deduced from measurements of methylene blue adsorption capacity, (funol/g). 

As can be seen in Fig. 5, N conversion using H-ZSM-11 zeolite seems to be correlated with the number of Bronsted sites on the external surface (deduced from measurements of methylene blue adsorption capacity) and not with the total niunber of Bronsted sites (determined by the total pyridine adsorbed on Bronsted sites and desorbed at 150°C by FT-IR spectroscopy), using the literature data on the integrated molar extinction coefficients [17], (for infrared absorption bands of pyridine adsorbed on solids acid catalyst [17], providing no dependence of the integrated coefficients on the catalyst or strength of the sites). 

If the Langmuir equation describes methylene blue adsorption, calculate the specific surface area of the clay in square meters per gram. Assume that each adsorbate molecule occupies 65 on the surface. 

Brindley, G.W., and T.D. Thompson. 1970. Methylene blue adsorption by montmorillonite. Determination of surface areas and exchange capacities with different initial cation saturations. Isr. J. Chem. 8 409-415. 

Hang, P.T., and G.W. Brindley. 1970. Methylene blue adsorption by clay minerals. Determination of surface areas and cation exchange capacities. Clay Clay Miner. 18 203-212... 

Yield of Organic Residue. A high yield of organic residue adversely affects the cost of leaching the pulping base from the solid product as well as the thermal balance of the over-all recovery system. However, it was found in the laboratory (using the methylene blue adsorption test) that if the residue were produced at 750°C. or higher, it showed excellent adsorptive properties, similar to commercial activated carbons. The optimum yield of the residue appears to depend therefore on the size of the accessible market for this material. 

Iodine adsoiption Methylene blue adsorption Phenol adsorption... 

Single measurements of methylene blue adsorption on pulp fibers gave different results, probably as a result of non-specific binding. The conditions of the assay (volume, sample amount, and use of new glassware and plastic ware) were adjusted so that the adsorption of methylene blue to a pulp sample could be determined reproducibly. The final form of the assay is described m Methds and uses at least three different samples of pulp, all of which adsorb le than half the methylene blue in the assay. The adsorption of methylene blue was determined from the slope of methylene blue adsorbed as a function of weight of the pulp (Figure 1). 

Figure L Methylene blue adsorption to 12 bar loblolly pine pulp after treatment with laccase and indicated substrates.

The MnP treatment did not increase the binding of methylene blue above that of the controls. The laccase together with 4-hydroxyphenylacetic acid did increase the adsorption of methylene blue. Both the MnP treatment and laccase treatment together with 4-hydroxyphenylacetic acid increased handsheet strength. Methylene blue adsorption does not appear to correlate with handsheet strength. 

Tulp treatment Methylene blue adsorption (pMol/g)... 

M. M. Ayad, A. Abu El-Nasr, J. Stejskal, Kinetics and isotherm studies of methylene blue adsorption onto polyaniline nanotubes base/sihca composite. JInd Eng Chem 2012, 18 (6), 1964-1969. 

ABSTRACT. Rates of methylene blue adsorption from 0.02 gdm aquous solution on composites prepared from 100 phr PVC, 60 phr DOP, 0-40 phr natural zeolite (clinoptillolite) were studied. The adsorption of methylene blue was negligible for composites having no zeolite additive, whereas extensive adsorption was observed for composites having 5-40 phr zeolite. 

StapelE.E., Verhoef P.N.W. The use of the methylene blue adsorption test in assessing the quality of basaltic tidf rock aggregate. Engineering Geology 1989, 26 233 6. 

Hydrogel Methylene blue Adsorption Maleic acid Crosslinker... 

A commercial neutral AI2O3 powder was used (Merck, 1077, particle size 0.063A).200 mm). The specific surface area of the oxide powder, determiued by the N2-Brunauer-Emmett-Teller method was 156 9 m g while by a methylene blue adsorption method 17 3 m g was obtained. 

Kavitha, D. and Namasivayam, C. (2007). Experimental and kinetic studies on methylene blue adsorption by coir pith carbon. Bioresource Technology 9S(l), 14-21. 

Methylene blue adsorption it gives an indication of the adsorption capacity for large molecules having similar dimensions to methylene blue it is a quick test for medicinal and other carbons prepared to adsorb large molecules. The methylene blue value is defined as... 

Lei S., Miyamoto J., Kanoh H. and Kaneko K., Enhancement of the methylene blue adsorption rate for ultramicroporous carbon fibers by the addition of mesopores. Carbon in press. 

The montmorillonite content of bentonites varies considerably from locality to locality and within the deposits. Determination of the montmorillonite content is a very tedious procedure which in general gives approximate values only (see chapter 1 in [2]). In industrial test laboratories the montmorillonite content is obtained by methylene blue adsorption. This comfortable but rough method is very approximative (see below) (cf. [6] chapter 3.3.6 in [2]). It is recommended to derive the montmorillonite content firom the C, N content of the... 

Fig. 1 Isotherms and Langmuir model fitting of methylene blue adsorption for various adsorbents [33]. The pollution uptake capacity is plotted versus the equilibrium pollution concentration (Ce). APVC, APET, ATR, and F400 are activated PVC, activated PET, activated tire rubber, and standard F400 activated carbon, respectively. Reproduced with permission from Lian et al. [33] Elsevier...

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