The adsorption phenomenon for simple aromatic com- the previous explanation that the dispersive interactions in- pounds on activated carbons is ruled by two different crease with the carbon basicity. This tendency is observed types of interactions: dispersive and electrostatic. The f F. Villacañas et al. / Journal of Colloid and Interface ...
2021-11-3 · Further, toluene displayed higher adsorption than n-hexane due to the π-π interaction between MIL-101 and toluene (Huang et al., 2011). Similarly, adsorption of benzene on MIL-101 showed 1,304 mg g-1 specific adsorption value when compared to …
This study compares the adsorption capacity of modified CNTs using acid and heat treatment. The CNTs were synthesized from acetone and ethanol as carbon sources, using floating catalyst chemical va...
of activated carbon (Dina et al., 2012). The adsorption behaviour of activated carbon from adsorbate solutions is affected by both the surface and the solution properties (Haghseresht et al., 2002). Presence of surface functional groups such as carboxyl, lactone, phenol, carbonyl, ether, pyrone and chromene gives activated carbon an acid-
2021-10-27 · The value of R L was found to be 0.004 and confirmed that the activated carbon was suitable for the adsorption of dye under the conditions used in this study (Hameed et al. 2007). The experimental data obtained from the equilibrium adsorption experiments of bamboo samples were linearized to the log-log coordinates.
2017-12-15 · VOCs 1, 1, 2, 3, 2, 1 1. , 200237; 2., 200237; 3., 102206
2018-9-5 · published previously (Romero et al. 2003). The physical properties and pore-size distribution of the activated carbon employed are given in Table 1. Through the use of the mass titration method (Haghseresht et al. 2003), the pH of the carbon at the point of zero charge (pH pzc) was determined by placing various amounts of carbon in 50 cm 3 of a ...
The sol-gel method was used to synthesize zero-valent iron/titanium dioxide supported on activated carbon (Fe0/TiO2/AC) Adsorbent and the adsorbents were comprehensively characterized by XRF, XRD, FT-IR, BET, FE-SEM and EDX analysis. The batch experiments were performed to evaluate the effect of adsorbent type, pH of solution, pollutant initial concentration and contact time on the 2,4 ...
2015-5-1 · The adsorption behaviour of activated carbon from adsorbate solutions is affected by both the surface and the solution properties (Haghseresht et al., 2002). Presence of surface functional groups such as carboxyl, lactone, phenol, carbonyl, ether, pyrone and chromene gives activated carbon an acid-base character (Rodriguez-Reinoso and Molina ...
2018-7-10 · Regeneration performance of clay-based adsorbents for the removal of industrial dyes: a review Momina, M. Shahadat and S. Isamil, RSC Adv., 2018, 8, 24571 DOI: 10.1039/C8RA04290J This article is licensed under a Creative Commons …
2014-12-12 · Adsorption procedure. The adsorption experiments were performed by mixing various amounts of diatomite (0.03 – 0.12 g) in 100 mL of toluene solutions with varying concentrations (ranging from 100-300 mg/L) at natural pH (pH = 6).The natural pH to determine the maximum toluene removal could be achieved with diatomite, because this pH was more suitable for industrial purposes.
2006-1-1 · 1. The adsorption phenomenon for simple aromatic compounds on activated carbons is ruled by two different types of interactions: dispersive and electrostatic. The former are produced by interactions between delocalized π electrons in the carbon basal planes and the aromatic rings in the adsorptive molecules.
2020-12-1 · Nitrobenzene Vapor Adsorption on Activated Carbon with Surface Oxygen Functional Groups. ... and electrostatic interactions in the aqueous phase adsorption of naphthalenesulphonic acids on ozone-treated activated carbons. Carbon 2002, 40 (14), 2685-2691. ... Activated carbon adsorption in oxidizing environments.
2013-12-15 · , 621010 Preparation of Lignin-based Activated Carbons and Adsorption of Nitrobenzene Li Xianfa School of Life Science and Engineering,Southwest ...
2008-4-28 · The adsorption properties of organic substances on bamboo-charcoal have been reported in recent years(Xu et al., 2002; Zhang et al., 2006; Wang et al., 2008). In this article, the adsorption properties, thermodynamic and kinetic parameters of bamboo …
2018-2-19 · 918 S. Nouri/Adsorption Science & Technology Vol. 20 No. 9 2002 In the present work, the adsorption behaviour of p-cresol in its molecular and ionic forms on to a commercially available activated carbon (S.E.I.) in an untreated and treated form has been inves-
2021-7-9 · Haghseresht et al.2002), activated carbon F100 was used in both an untreated and treated form. Analysis of the corresponding adsorption data was achieved using the Langmuir homogeneous [equation (1)] and binary [equation (4)] models as the local isotherm equations to obtain the
2016-6-8 · The value of separation factor (R L) indicates the nature of the absorption process (Kannan, et al., 2001). In the present study, the values of RL were in the range of 0 to 1. This indicates that the Langmuir isotherm was favourable for adsorption of on …
The aims of this work were to make use of carbonic materials to remove nitrobenzene in wastewater and investigate adsorption mechanism. The adsorption ability of different carbonic materials for nitrobenzene was compared. It was found that carbon nanotubes and carbon black exhibited higher adsorptive capacity than coconut activated carbon and granular activated carbon at the same experimental ...
Hu S, Wu Y, Yao H, et al. Enhanced Fenton-like removal of nitrobenzene via internal microelectrolysis in nano zerovalent iron/activated carbon composite[J]. Water …
technique (Zhang et al. 2011); however, the fraction and saturated activated coke left were the hazardous wastes and needed to be further treated. Some researchers have investigated the TNT removal by activated carbon and further degradation (Fu et al. 2012). Hwang et al. (2005) conducted laboratory-scale experiments on the alkaline
Keywords: adsorption, p-nitrophenol, treated activated carbon, langmuir equation, characterization of activated carbon Introduction tional groups (Hsieh and Teng, 2000; Leng and Pinto, 1997; Moreno-Castilla et al., 1995) second, the nature As a result of the extensive use of organic compounds in of the adsorbate, its pKa, functional groups ...
The conventional adsorption materials commonly include activated carbon, 9 ceramic, 10 silicon dioxide, 11 alumina, ... is highly hydrophilic due to the large number of surface silanol groups and has been used for the removal of dyes, 18 nitrobenzene, 19,20 and other organic pollutants. Zhao et al. 21 studied the modification of MCM-41 by using ...
Kobya (2004) prepared activated carbon using hazelnut shell and maximum adsorption capacity of 170 mg/g was obtained at an optimum pH 1 which is higher than adsorption capacity of other adsorbents such as wood activated carbon (Selomulya et al. 1999), tyre activated carbon (Hamadi et al. 2001) and coconut shell activated carbon (Selomulya et al ...
2002-11-12: Nordquist et al. 20020155252: Molded product of activated carbon and a method for production thereof: 2002-10-24: Tsuji et al. 6455023: Metallic catalysts for non-neutral liquid media: 2002-09-24: Gadkaree et al. 20020103081: Activated carbon molded body and use thereof: 2002-08-01: Wolff: 20020082168: Activated carbon for odor ...
2020-8-30 · Activated carbon and CNMs are synthetic CMs that are prepared mainly from pyrolysis of carbon sources or pyrocarbon deposition. Activated carbon is widely used as an efficient adsorbent in water and wastewater treatment as well as in soil and sediment remediation (Bandosz & Block, 2006; Monser & Adhoum, 2002).
Conventional techniques such as activated carbon adsorption (Haydar et al. 2003; Nouri and Haghseresht 2004), the extraction method (Peretti et al. 2002), microbial degradation (Gemini et al. 2005 ...
Adsorption of p-Cresol and p-Nitrophenol by untreated activated carbon in single and multisolute solutions was carried out at 301 K and at controlled pH conditions. In acidic conditions, well below the pK a of both solutes, it was observed that the adsorbate solubility and the electron density of aromatic rings influenced the extent of adsorption by affecting the extent of London dispersion ...
The adsorption behaviour of activated carbon from adsorbate solutions is affected by both the surface and the solution properties (Haghseresht et al., 2002). Presence of surface functional groups ...