Adsorption of Phenol on Mesoporous Carbon CMK-3: Effect of Textural Properties

Abstract

Mesoporous carbon CMK-3s with different textural properties have been used for the adsorption of phenol to understand the necessary physicochemical properties of carbon for the efficient removal of phenol from contaminated water. The kinetic constants (both pseudo-second order and pseudo-first-order kinetics) increase with increasing pore size of carbons. The maximum adsorption capacities correlate well with micropore volume compared with surface area or total pore volume even though large pore (meso or macropore) may contribute partly to the adsorption. The pore occupancies also explain the importance of micropore for the phenol adsorption. For efficient removal of phenol, carbon adsorbents should have large micropore volume and wide pore size for high uptake and rapid adsorption, respectively.

Nanocarbons in different structural dimensions (0–3D) for phenol adsorption and metal-free catalytic oxidation

“…For efficient adsorption and degradation, many porous materials have been developed and employed [5]. Pillared clays, zeolites, mesoporous metal oxides, polymers and metal-organic frameworks have shown varying effectiveness in removing toxic pollutants [6]. However, most traditional adsorbents and catalysts are metal-based materials [7][8][9][10] and the demerits of high-cost, scarcity in nature and metal leaching of those materials were experienced [11].…”

Adsorbents based on carbon microfibers and carbon nanofibers for the removal of phenol and lead from water

“…Activated carbons (ACs) prepared from various precursors, such as bagasse ash, wood, agricultural wastes, and coconut shells, have been extensively used for the adsorptive removal of phenol and lead from wastewater [5][6][7][8][9][10][11][12]. Recently, activated carbon fibers (ACFs), carbon nanotubes (CNTs), carbon nanoparticles, and carbon microspheres have been used as adsorbents for the aqueous phase removal of phenol and metallic ions, including Pb 2+ [13][14][15][16][17][18].…”

Removal of 4-chloro-2-nitrophenol occurring in drug and pesticide waste by adsorption onto nano-titanium dioxide

“…Activated carbon (Gonzalez-Serrano et al 2004;Kumar et al 2007;Tseng et al 2010), microporous and mesoporous carbon (Derylo-Marczewska et al 2010;Haque et al 2010), Zeolit (Wang et al 2010) and clay minerals (Arellano-Cardenas et al 2005) are a few of the adsorptive materials which have been tested for adsorption of phenols from aqueous solutions. In most cases, adsorbents have diameters in the range of submicron to micron and have large internal porosities to ensure adequate surface area for adsorption.…”