Adsorption of 1,2-dichlorobenzene from water to carbon nanotubes

Abstract

The as-grown CNTs and graphitized CNTs were used as adsorbents to remove 1,2-dichlorobenzene from water. The experiments demonstrate that it takes only 40 min for CNTs to attain equilibrium and the adsorption capacity of asgrown and graphitized CNTs is 30.8 and 28.7 mg/g, respectively, from a 20 mg/l solution. CNTs can be used as adsorbents in a wide pH range of 3-10. Thermodynamic calculations indicate that the adsorption reaction is spontaneous with a high affinity and the adsorption is an endothermic reaction.

Growth and functionalization of carbon nanotubes on quartz filter for environmental applications

“…CNTs have been shown to be an efficient adsorbent for the elimination of dibenzo-p-dioxin from contaminant water [12]. Also, they can adsorb a variety of gases and have been proven to be superior to activated carbon for the removal of dioxin1,2-dichlorobenzene from water in a wide range of pH (3)(4)(5)(6)(7)(8)(9)(10) [11,13]. Recently, X Ma et al, [14] have shown the adsorption/desorption of chlorinated compounds by pristine and thermally treated multi-walled carbon nanotubes.…”

Carboxylated carbon nanotubes as an efficient and cost-effective adsorbent for sustainable removal of insecticide fenvalerate from contaminated solutions

“…These groups can adsorb organics through donor-accepter complex formation. The formation of water cluster on carboxylic groups is suspected to block adsorption on the carboxylic sites [21]. If water cluster is indeed the cause of the decreased capacity observed at lower pH, it is to expect that the effect would be reduced if the number of oxygen groups on the surface of CNTs were reduced.…”

From spent Mg/Al layered double hydroxide to porous carbon materials

“…were more complex than that of AC (mainly C O and C O ), according to XPS analysis. As we know, the specific interaction between -electron rich regions of the carbon layers and aromatic rings was one of the important sorbate-sorbent interactions [43][44][45][46]. Lillo-Rodénas et al, pointed out that surface functional groups on carbon materials could affect -electron rich regions of the carbon layers, and thus weaken the specific interactions between -electron rich regions of the carbon layers and the aromatic rings of aromatic compounds [47].…”