Abstract
The potential use of waste tyre rubber granules (WTRG) for the batch adsorption of naphthalene from aqueous solutions was investigated. The effect of various operational variables such as contact time, initial naphthalene concentration, adsorbent dose, size of adsorbent particles, and temperature of solution on the adsorption capacity of WTRG was evaluated. The adsorption of naphthalene by WTRG was a fast kinetic process with an equilibrium contact time of 60 min. A low temperature (5°C), small adsorbent particle size (0.212 mm) and higher adsorbent dosage favored the adsorption process. Results of isotherm studies revealed that adsorption of naphthalene was best described by the Langmuir isotherm equation (R<sup>2</sup>=0.997) while the kinetics of the process was best described by the Lagergren pseudofirst order kinetic equation (R<sup>2</sup>=0.998). This study has demonstrated the suitability of WTRG for the removal of naphthalene from aqueous solution.
Highlights
Contributions: FAA, in collaboration with ANA, designed the study; AIA performed the experiments while ANA and SAA managed the literature searches; ANA wrote the first draft of the manuscript; FAA provided analytical advice and manuscript correction
Results of isotherm studies revealed l that adsorption of naphthalene was best ia described by the Langmuir isotherm equation c (R2=0.997) while the kinetics of the process r was best described by the Lagergren pseudoe first order kinetic equation (R2=0.998)
The properties of waste tyre rubber granules (WTRG) as obtained from proximate analysis are presented in Table 2.21–23 Results of the ultimate elemental analysis of the WTRG are presented in Table 3.23–25 saturated and all available active binding sites are occupied by the naphthalene molecules.[4,13]
Summary
Contributions: FAA, in collaboration with ANA, designed the study; AIA performed the experiments while ANA and SAA managed the literature searches; ANA wrote the first draft of the manuscript; FAA provided analytical advice and manuscript correction. A lot of interest has been shown in the use of waste tyre rubber in the removal of organics from polluted wastewater.[12,13,15,16,17] In comparison with conventional adsorbent, waste tyre rubber granules offers the advantage of being readily available and low cost. They have been applied to the treatment of contaminated effluents in different forms including waste tyre rubber granules, waste tyre rubber chips, waste tyre rubber ash, etc
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
