Sorption of Triclosan onto Tyre Crumb Rubber

Abstract

The effectiveness of using tyre crumb rubber (TCR) as an adsorbent for the removal of triclosan (TCS) from aqueous solutions was evaluated as a function of pH through controlled batch experiments. Carbon black (CB) and styrene–butadiene polymer (SBP), which are the main components in TCR, were individually evaluated and their contribution in the sorption process was assessed. At pH 3, the maximum rate of adsorption of TCS onto TCR, CB and SBP was 89, 95 and 92%, respectively. The Freundlich model provided the best fit for the experimental data obtained, as indicated by the mean relative percent deviation modulus (P). Our study results indicate that the removal of TCS using SBP follows an absorption process. Maximum desorption rate of TCS from TCR was approximately 89%. Results of sorption/desorption experiments clearly indicated the viability of TCR to be reused without any significant loss in its sorption/desorption capacity.

Emerging contaminant (triclosan) identification and its treatment: a review

“…Using oxides of manganese, a removal efficiency of 3-100% had been achieved under certain conditions as reported by [66]. Tyre crumb rubber (TCR) is economical and ubiquitous in nature; an adsorption efficiency of 89% is observed in TCR at a pH 3 as studied by [67]. Polymeric adsorbents highly promising in adsorption of triclosan; diaion (SP207) had an adsorption efficiency of 98.8%.…”

Effect of Surface Functionalization on the Adsorption of Arsenic Using Magnetite Nanocrystals

“…In a previous study, Luna-Pineda et al (2009) observed that the saturation magnetization for bare magnetite is significantly higher than SO-magnetite and DMSA-magnetite. These results are in accordance with the TGA results of this study.…”

“…In this equation, C e represents the concentration of adsorbate in solution at equilibrium; q e is the concentration of adsorbate in the sorbent; b is the Langmuir constant representing the affinity between the adsorbate and the sorbent; and Q 0 is the Langmuir constant representing the concentration of adsorbate in the sorbent considering a complete coverage of available sites (Alamo-Nole et al 2011;López-Morales et al 2012).…”

Adsorption of arsenic(V) oxyanion from aqueous solutions by using protonated chitosan flakes

“…The point of zero charge (pH pzc ) was obtained using a batch equilibrium technique [76][77][78]. A c c e p t e d M a n u s c r i p t 9 hand, above the pH pzc results in an electrostatic repulsion due to a negative net surface charge [76].…”