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desorption of activated carbon
Desorption by ultrasound: Phenol on activated carbon and
16/04/2004· The desorption rates of activated carbon were found to significantly increase by ultrasound at 40 kHz and 1.44 MHz. Attrition of the activated carbon due to cavitation could be prevented by operating at a higher frequency and with an intensity below the threshold of the pulverization of carbon. According to the structural stability study of Amberlite XAD‐4 and Dowex
Desorption behavior of various volatile organic compounds
01/03/2017· The desorption behavior of various volatile organic compounds (VOCs: toluene, acetone, n-hexane, n-octane, methanol, ethanol, 2-propanol, and propylene glycol monomethyl ether) from activated carbon was measured in supercritical carbon dioxide (scCO 2) using the fixed-bed method at 313–353 K and 10.0–15.0 MPa.The measured behavior strongly depended on the type of VOC, and
Adsorption and Desorption of Carbon Dioxide onto and
Adsorption of carbon dioxide near its critical point on DeGussa IV activated carbon is investigated in this study. A volumetric method was used to measure the adsorption/desorption isotherms at 284, 300, 305, 310, and 314 K over a large pressure range. At subcritical temperatures, adsorption isotherms display a discontinuity at the vapor pressure of carbon dioxide, and desorption hysteresis is
The Adsorption and Desorption Breakthrough Behavior of
18/03/2009· The adsorption and desorption breakthrough behaviors of carbon monoxide and carbon dioxide on activated carbon at wide ranges of pressure were studied theoretically and experimentally for single component and multicomponent systems. The effects of total pressure, inlet composition, and flow rate on adsorption and desorption curves were also
A new desorption method for removing organic solvents
28/03/2017· Efficient desorption of organic solvents from activated carbon was achieved with an ananionic surfactant solution, focusing on its washing and emulsion action. METHODS: Isopropyl alcohol (IPA) and methyl ethyl ketone (MEK) were used as test solvents. Lauryl benzene sulfonic acid sodium salt (LAS) and sodium dodecyl sulfate (SDS) were used as the surfactant. Activated carbon (100
Kinetics of Water Vapor Adsorption on Activated Carbon
The adsorption and desorption characteristics of water vapor on the activated carbon were investigated over the pressure range 0−2.41 kPa (p/p 0 0−0.9) in a static water vapor system. The adsorption and desorption kinetics were studied with different amounts of preadsorbed water for changes in vapor pressure of 0.303 kPa. The adsorption rate constants were also studied for three relative
Adsorption–Desorption Characteristics of VOCs Over
In recent years, adsorption of VOC on activated carbon was studied by many authors and they attempted to increase adsorption capacity of activated carbon obtained from different materials such asОнлайн-запрос
Desorption‐ and Decomposition‐Based Techniques for the
Activated carbon (AC) is an adsorbent used in most adsorption processes related to micro removal of pollutants from the water phase, but the application is limited due to high costs and environmental issues related to the disposal after saturation. Different regeneration techniques, reducing costs and minimizing environmental impact, are reported for the reuse of saturated AC. These techniquesОнлайн-запрос
CN105080287A Activated carbon desorption method of
The invention relates to an activated carbon desorption method of an activated carbon canister in a benzene vapor recovery device. The method mainly solves the problem that activated carbon is prone to desorption at low temperature in the prior art. According to the technical scheme, the activated carbon desorption method comprises the steps that after adsorption of the activated carbonОнлайн-запрос
A new desorption method for removing organic solvents
28/03/2017· Efficient desorption of organic solvents from activated carbon was achieved with an ananionic surfactant solution, focusing on its washing and emulsion action. METHODS: Isopropyl alcohol (IPA) and methyl ethyl ketone (MEK) were used as test solvents. Lauryl benzene sulfonic acid sodium salt (LAS) and sodium dodecyl sulfate (SDS) were used as the surfactant. Activated carbon (100Онлайн-запрос
The Adsorption and Desorption Breakthrough Behavior of
The adsorption and desorption breakthrough behaviors of carbon monoxide and carbon dioxide on activated carbon at wide ranges of pressure were studied theoretically and experimentally for single component and multicomponent systems. The effects of total pressure, inlet composition, and flow rate on adsorption and desorption curves were alsoОнлайн-запрос
Water | Free Full-Text | Desorption of Organic
The loading of granular activated carbon (GAC) is influenced by the amount of water treated and the concentrations of adsorbates present in the water matrix. Through extraction experiments, we aimed to investigate the total adsorbed mass of eight organic micropollutants by using ethanol as solvent and the maximum possible concentrations, due to the desorption of organic micropollutants, in water.Онлайн-запрос
Chemical regeneration of granular activated carbon
Granular activated carbon (GAC) is used in drinking water treatment plants worldwide to remove micro-pollutants such as pesticides. Early breakthrough of problematic micro-pollutants leads to frequent and costly thermal regeneration off-site. A potential alternative approach is to chemically regenerate GAC on-site (possibly in situ) with an appropriate solution capable of desorbing organicОнлайн-запрос
The basics of activated carbon adsorption | Water Tech
Activated carbon is porous, inexpensive and readily available for use as adsorbents, furnishing a large surface area to remove contaminants. It has more useful surface area per gram than any other material available for physical adsorption. In fact, a teaspoon of activated carbon has more surface area than a football field. Physical phenomenaОнлайн-запрос
The Adsorption and Desorption of Aurocyanide from
Description. This monograph presents a unified theory of adsorption and desorption of aurocyanide on activated carbon. This theory has proved useful for CIP/CIL carbon adsorption and Zadra and AARL elution process and equipment design; in accounting for the effects of various water qualities and process temperatures; and in the development of reagents to improve these processes.Онлайн-запрос
Adsorption and desorption of phenol on activated carbon_百度文库
Keywords: Activated carbon; Adsorption; Desorption; Kinetic; Phenol 1. Introduction Phenols are widely used for the commercial production of a wide variety of resins, including phenolic resins, which are used as construction materials for automobiles and appliances, epoxy resins and adhesives, and polyamide for various applications [1,2]. Phenolic pollutants occur in wastewater of a number ofОнлайн-запрос
ACTIVATED CARBON IN GOLD RECOVERY Kemix
carbon. A soft less dense raw material like wood, produces an activated carbon with a lower density. The pore structure of the activated carbon is also dependent on the raw material. Coconut shell based activated carbon has a pore structure forming micro-pores, whereas wood based activated carbon has a pore structure forming larger pores due toОнлайн-запрос
A new desorption method for removing organic solvents
28/03/2017· Efficient desorption of organic solvents from activated carbon was achieved with an ananionic surfactant solution, focusing on its washing and emulsion action. METHODS: Isopropyl alcohol (IPA) and methyl ethyl ketone (MEK) were used as test solvents. Lauryl benzene sulfonic acid sodium salt (LAS) and sodium dodecyl sulfate (SDS) were used as the surfactant. Activated carbon (100Онлайн-запрос
DESORPTION OF GOLD AND SILVER FROM ACTIVATED CARBON
desorption process from activated carbon employed several parameters either fixed or changeable. Loaded carbon, stirring rate, the concentration of NaOH and NaCN belonged to fixed parameters while ethanol volume, % solid and temperature served as the changeable ones. Desorption of Gold and Silver from Activated Carbon, Lili Tahli and Tatang Wahyudi 41 Figure 1. Instrument for gold-silverОнлайн-запрос
Desorption of Organics Formed on Activated Carbon
Desorption of Organics Formed on Activated Carbon Evangelos A. Voudrias, Vernon L. Snoeyink, and Richard A. Larson Free or combined chlorine reacts with phenols adsorbed on granular activated carbon (GAC) to yield a series of oxidation products that are not formed in the absence of carbon. The potential for desorption of some of these products was demonstrated experimentally by introducing aОнлайн-запрос
Desorption‐ and Decomposition‐Based Techniques for the
Activated carbon (AC) is an adsorbent used in most adsorption processes related to micro removal of pollutants from the water phase, but the application is limited due to high costs and environmental issues related to the disposal after saturation. Different regeneration techniques, reducing costs and minimizing environmental impact, are reported for the reuse of saturated AC. These techniquesОнлайн-запрос
(PDF) Gold desorption from activated carbon with dilute
Gold desorption from activated carbon with dilute NaOH/organic solvent mixturesОнлайн-запрос
Kinetics of phenanthrene desorption from activated
Rate constants for desorption to water from these two types of sites in the three activated carbons did not reveal a relation with activated carbon grain size. These rate constants were comparableОнлайн-запрос
US3920403A Method of desorbing gold from activated
Gold in the form of its cyanide complex is desorbed from activated carbon by contacting the carbon with a stripping liquid at temperatures above that 130*C but below the decomposition temperature of the gold cyanide complex. The stripping liquid may comprise water, dilute caustic or dilute caustic cyanide. US3920403A Method of desorbing gold from activated carbon Google Patents Method ofОнлайн-запрос
Hysteretic Adsorption and Desorption of Hydrogen by
Adsorption and desorption of hydrogen from nanoporous materials, such as activated carbon, is usually fully reversible. We have prepared nanoporous metal-organic framework materials with flexible linkers in which the pore openings, as characterized in the static structures, appear to be too small to allow H2 to pass. We observe hysteresis in their adsorption and desorption kinetics above theОнлайн-запрос
Activated Carbon Absorption | Index, Capacity | Sentry Air
Activated Carbon Adsorption is the act of an accumulation of a gas or liquid onto the surface of the activated carbon, an inert solid material. This process is used to remove diverse, dissolved contaminants from water, air, and gaseous streams. Learn more about Activated Carbon Adsorption.Онлайн-запрос
ACTIVATED CARBON IN GOLD RECOVERY Kemix
carbon. A soft less dense raw material like wood, produces an activated carbon with a lower density. The pore structure of the activated carbon is also dependent on the raw material. Coconut shell based activated carbon has a pore structure forming micro-pores, whereas wood based activated carbon has a pore structure forming larger pores due to