The kinetic results showed that the Cr VI removal followed intraparticle diffusion kinetics with a correlation coefficient greater than 0. The results showed that the percentage removal of dyes by QKCF was enhanced with an increase in the agitation speed from 75 to rpm.
The applicability of the isotherm equations was a comparison by referring to the correlation coefficient, R2 .
The decrease in color removal is because, at the higher adsorbent dosage, there is a very fast superficial adsorption on the surface adsorbent that produces a lower solute concentration in the solution than when the adsorbent dose is lower.
Effect of Contact Time Figure 9 shows the effect of contact time on removal efficiency of RR dye for different initial dye concentration. The increment of adsorption may be due to the increased rate of diffusion of the adsorbate molecules across the surface boundary layer and by the internal pores of the adsorbent particles.
Effect of Temperature Figure 8 shows the effect of temperature on the sorption of RR. All flasks were sealed properly using aluminum foil to keep sample from leakage. This fairly acceptable practically isotherm can be applied for non-ideal sorption that includes heterogeneous surface energy systems and is obvious by the following equation : Goswami  reported that fiber treated with increasing sodium hydroxide concentration showed increasing amorphous structure and porosity.
Results and Discussion 3. In this study, adsorption potential of a low cost adsorbent Hibiscus Cannabinus kenaf was investigated for Cr VI removal from water using batch and continuous mode experiments.
An increased number of molecules may obtain sufficient energy to succumb an interaction with active sites at the surface . With the increasing of the agitation speed, the rate of diffusion of the dye molecules from the dye solution to the liquid boundary layer surrounding the adsorbent particle become higher because of an enhancement of the turbulence and a decrease of the thickness of the liquid boundary layer.
After the critical dose of 1. RR dye removal of The samples were withdrawn at growing time periods ranging from 15 min to min. Effect of pH pH is a so significant parameter in absorption process and affected on absorption capacity, dye solubility, solution chemistry and the surface of the absorbent pore .
The effect of the agitation speed was investigated by changing the stirring speed from 75 rpm to rpm. The Yoon—Nelson and Thomas models were found appropriate for description of the breakthrough curve, whereas the Bohart—Adams model was not match very well. Adsorption Experiments All the experiments were done in batch system using mL Erlenmeyer flasks.
Abstract Adsorption is one of the excellent ways for heavy metal removal from aqueous solution because of advantages like the low cost, availability, profitability, ease of operation and efficiency. Characterization of Adsorbent SEM is helpful for find out the particle shape and suitable size distribution of the adsorbent.
From this experiment, the adsorption isotherm was determined. This experiment is very important to get optimum reaction efficiency. This is due to the fact that, increase in adsorbent dosage increase adsorbent surface area and availability of more adsorption sites.
The Freundlich isotherm is the closer relationship that depicting the sorption equation derived empirically in Thus, batch mode studies were carried out at rpm of agitation speed. Effect of Initial Dye Concentration In batch absorption experiment, the initial dye concentration in solution plays a significant role as a driving force that overcomes mass transfer resistance of adsorbate between the solid phase and aqueous .
The effect of pH on the percentage removal was shown in Figure 5.
In addition, SEM is the main device for characterizing the surface morphology and fundamental physical properties of the adsorbent surface. This phenomenon was also confirmed by Mohammad .
RR dye solution was adjustment by using 0.SORPTION BEHAVIOR OF HIBISCUS CANNABINUS L. CORE IN SIMULATED BUNKER OIL C – SEAWATER MIXTURE Lea C. Tan, Trina G.
Napasindayao, Florinda T. Bacani Chemical En. Sorption using natural sorbents is an alternative method of oil spill treatment.
This research proposed a polynomial equation that described the sorption behavior of Hibiscus cannabinus L. core in. Characteristics of Some Natural Fibrous Assemblies for Efficient Oil Spill Cleanup Sherif S. Z. Hindi Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia.
Sorption Behavior of Hibiscus Cannabinus L. Core in Simulated Bunker Oil C – Seawater Mixture 15th Regional Symposium on Chemical Engineering (RSCE) december Sorption using natural sorbents is an alternative method of oil spill treatment.
This research proposed a polynomial equation that described the sorption behavior of Title: Post-doctoral Researcher at. Acute exposure to methylene blue dye (MB) may cause Kenaf (Hibiscus cannabinus L.) is the third-world crop after wood some harmful effects such as increased heart rate, shock, vom- and bamboo, and it is poised to be the next industrial crop in iting, jaundice, heinz body formation, cyanosis, quadriplegia and Malaysia.
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Mechanical properties and water sorption behavior of phenol-formaldehyde hybrid .Download