Development and Environmental Applications of Activated Carbon Cloths

Abstract

Activated carbon cloths have received growing attention because they offer comparative advantages over the traditional powdered or granular forms of this well-known adsorbent, providing further potential uses for technological innovations in several fields. The present article provides an overview of research studies and advances concerned with the development of activated carbon cloths and their use as adsorbent in environmental applications, mostly reported in the last years. The influence of some fabrics and textile wastes used as precursors, and of main activation process variables on the development and physicochemical, mechanical and/or electrical properties of the resulting activated carbon cloths are first reviewed. Then, investigations dealing with the removal of water and air pollutants by adsorption onto activated carbon cloths, including advances toward optimizing their regeneration after organic vapors saturation, are presented.

The influence of impregnating chemicals on the carbonization process of viscose fiber cloths

“…The obtained results showed that the heating rates increasing cause the pre-exponent coeffients increasing and activation energy decreasing lightly. The pronounced increase of pre -exponential factor can promote the reaction rate increasing like suggested by [4].…”

“…Activated carbon such as powdered or granular forms is well known owing to its widespread application in many fields as a exellent adsorbent for purification, remediation of wastewater and toxic gas generated in industry [1][2][3][4]. In the recent years the activated carbon fiber cloths have receive an increasing concern because they exhibit a comparative advantages over the traditional activated carbon, including their application in high technological inovation as use in cell therapy as a support for stem cell growth [5].…”

“…The former step is precursor carbon fiber cloth cabonized to remove hydrate and volatile substance, while, the latter is a process of carbonized fiber cloth is activating. The practice has indicated that the role of impregnating agents is essential issues in preparation of carbonization carbon fiber cloths [4]. In this aricle, the influence of impregnating agents such as FeCl 3 , AlCl 3 , ZnCl 2 , Na 2 HPO 4 , H 3 PO 4 , polyphosphate urea on the chemical the carbonzation process of viscose fiber cloth was studied in detail.…”

The role played by local pH and pore size distribution in the electrochemical regeneration of carbon fabrics loaded with bentazon

“…Surface chemical functionalities were measured by potentiometric titration (PT) according to the pK a distribution method based on a titration with NaOH (0.1 mol/L) using a very low incremental volume (0.01 ml) in a wide range of pH (3)(4)(5)(6)(7)(8)(9)(10)(11). The method consisted in dispersing 100 mg of ACC in 75 ml of NaNO 3 0.01 mol L À1 , previously degassed by nitrogen bubbling during 48 h. The pH of the solution was then adjusted to 3 using HCl 0.1 mol/L and titrated by NaOH.…”

“…Due to their microtexture and their small fiber diameters (around 10 lm), they have minimal diffusion limitation and greater adsorption rates, which makes them ideal candidates for adsorption purposes [3]. As a result, intensive research involving carbon cloths or felts has been conducted in recent years and has demonstrated the high adsorption efficiency of carbon cloths towards noxious organic pollutants.…”