By Ackmez Mudhoo (auth.)
The potent elimination of dyes from aqueous waste is a crucial factor for lots of industrialized nations. the normal remedy equipment used to take away dyes from wastewater have yes hazards similar to incomplete dye elimination, excessive reagent and effort specifications, and the new release of poisonous sludge or different waste items that require disposal. the hunt for replacement and cutting edge remedy concepts has concentrated cognizance at the use of organic fabrics for dye elimination and restoration applied sciences. This short summarizes the most recent advancements during this vital field.
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Additional info for Adsorption of Reactive Red 158 Dye by Chemically Treated Cocos Nucifera L. Shell Powder: Adsorption of Reactive Red 158 by Cocos Nucifera L.
The values of the Freundlich constants showed a relatively easy uptake of RR1528 with high adsorptive capacity of CAC’s. 4 Results and Discussions 33 Fig. 22 The linearised Freundlich isotherm for RR158 on CAC’s. 5 g/L Fig. 23 The linearised Freundlich isotherm for RR158 on CAC’s. Experimental conditions: room temperature, 200 rpm, adsorbent dosage = 20 g/L The values of n for the present work were in the range of 2–10 hence indicating that adsorption is beneficial and the values of 1/n less than 1 generally indicated that adsorption capacity was only slightly suppressed at lower equilibrium concentrations.
34 Adsorption of Reactive Red 158 Dye Fig. 24 The linearised D–R isotherm for RR158 on CAC’s. 5 g/L Fig. 25 The linearised D–R isotherm for RR158 on CAC’s. Experimental conditions: at room temperature, 200 rpm, adsorbent dosage = 10 g/L 4 Results and Discussions 35 Fig. 26 The linearised D–R isotherm for RR158 on CAC’s. 5 g/L Fig. 27 The linearised D–R isotherm for RR158 on CAC’s. 3 Dubinin–Radushkevich Isotherm Model The values for the theoretical saturation capacity and that of b which is a constant connected with the mean free energy of adsorption per mole of adsorbate were determined from the slopes and y intercepts of the linearly regressed lines 36 Adsorption of Reactive Red 158 Dye Fig.
This displacement of the front of adsorption with the increase in depth can be explained by mass transfer phenomena that take place in this process. When bed depth is reduced, axial dispersion phenomena predominates in the mass transfer and reduces the diffusion of species. The solute thus does not have enough time to diffuse into the whole of the adsorbent mass thus leading to a reduction in dye uptake. The breakthrough curves (Fig. 990 for bed height of 10 cm, and so followed the characteristics ‘‘S’’ shape profile produced in an ideal adsorption system.
Adsorption of Reactive Red 158 Dye by Chemically Treated Cocos Nucifera L. Shell Powder: Adsorption of Reactive Red 158 by Cocos Nucifera L. by Ackmez Mudhoo (auth.)