activated carbon Articles
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Activated Carbon
Activated carbon, also called activated charcoal or activated coal is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions. The word activated in the name is sometimes replaced with active. Due to its high degree of micro-porosity, just 1 gram of activated carbon has a surface area in excess ...
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What is the Chemical Structure of Activated Carbon?
Known since antiquity as a powerful purification agent, activated carbon is used today in a vast array of applications at the home, municipal, and industrial levels. Activated carbon can be made from any organic material with a high natural concentration of carbon, so the specific chemical structure and properties will vary according to which raw material is selected. Here is what you should ...
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Kinetics and equilibrium adsorption study of p-nitrophenol onto activated carbon derived from walnut peel
An original activated carbon prepared from walnut peel, which was activated by zinc chloride, was modified with ammonium hydroxide or sodium hydroxide in order to contrast the adsorption property of the three different activated carbons. The experiment used a static adsorption test for p-nitrophenol. The effects of parameters such as initial concentration, contact time and pH value on amount ...
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Activated Carbon to the Rescue
Untitled Document Summary: Images of the aftermath of an emergency spill are all too familiar. The longer it takes to begin cleanup, the greater the injury to the environment, wildlife and the reputation of the companies involved. In June 1994, a pipeline carrying ethylene dichloride (EDC) ruptured, releasing chemical into a drainage ditch that discharged ...
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Effects of Starting Material on Activated Carbon Characteristics and Performance
Untitled Document The objective of this article is to demonstrate how the choice of starting material determines potential carbon product properties. Activation can only "develop" an activated carbon skeleton, using the building blocks supplied by the original starting material. The resultant activated carbon skeleton defines the adsorption pore structure and ...
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Manufacturer of Activated Carbon
Neelanjan Carbon is a technologically leading professional enterprise integrating science, industry and trading, specializing in the research, production and operation in the field of active carbon. The company produces over 100 tons of active carbon of different models, selling well in over 20 State municipalities directly under the Central Government and autonomous regions of India.With over 20 ...
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Commercial Kitchen Uses for Activated Carbon
Activated carbon has been known for its remarkable powers of purification since antiquity. Introduced to the Western world via the European sugar refineries of the 19th century, activated carbon is used today in a stunning array of applications at the home, commercial, and industrial levels. Commercial kitchens can use activated carbon in a variety of ways. ...
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Methylene blue removal using a low-cost activated carbon adsorbent from tobacco stems: kinetic and equilibrium studies
The aim of this study was to prepare activated carbon from tobacco stalks using microwave heating. The prepared activated carbon was applied as an adsorbent in methylene blue (MB) removal from water. The optimum conditions for activated carbon preparation were a radiation power of 280 W for a period of 6 minutes after the impregnation of the precursor material with 30% ZnCl2 for 24 hours. The ...
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Properties of activated carbon prepared from rice husk with chemical activation
The present work involves an investigation of the possible use of activated carbon developed from rice husk by chemical activation with zinc chloride (ZnCl2) and phosphoric acid (H3PO4) under different activation conditions for the removal of phenol from artificial wastewater. The physical and surface properties of the developed adsorbents were characterised using FTIR and SEM. A comparison ...
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Preparation of mesoporous activated carbon from palm-date pits: optimization study on removal of bentazon, carbofuran, and 2,4-D using response surface methodology
Palm-date pits were used to prepare activated carbon by physiochemical activation method, which consisted of potassium hydroxide (KOH) treatment and carbon dioxide (CO2) gasification. The effects of variable parameters, activation temperature, activation time and chemical impregnation ratios (KOH: char by weight) on the preparation of activated carbon and for removal of pesticides: bentazon, ...
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Contaminated Drinking Water Leads to Activated Carbon Market Growth
According to a recent study by Market Research Future (MRFR), the global water purifier market is surging, and there is no sign that it will soften until at least 2025. Although there are other types of water purifiers, such as UV technology and reverse osmosis, activated carbon filtration remains a significant portion of the market. Here is what you should know. ...
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Influence of solute dissociation constants on the optimum adsorption of weak electrolytes on activated carbons
The pH of solutions has dramatic effects on the adsorption capacity of activated carbons from solutions, while the adsorption curves for weak electrolytes acquired as a function of pH show maxima at some intermediate pH. This intermediate pH is usually near the pKa of the electrolyte. Some apparent controversy inherent in these statements has, however, motivated experimental and analytical ...
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Adsorption of leather dye onto activated carbon prepared from bottle gourd: equilibrium, kinetic and mechanism studies
Activated carbon prepared from bottle gourd has been used as adsorbent for removal of leather dye (Direct Black 38) from aqueous solution. The activated carbon obtained showed a mesoporous texture, with surface area of 556.16 m2 g−1, and a surface free of organic functional groups. The initial dye concentration, contact time and pH significantly influenced the adsorption capacity. In the ...
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Sorption of metaldehyde using granular activated carbon
In this work, the ability of granular activated carbon (GAC) to sorb metaldehyde was evaluated. The kinetic data could be described by an intra-particle diffusion model, which indicated that the porosity of the sorbent strongly influenced the rate of sorption. The analysis of the equilibrium sorption data revealed that ionic strength and temperature did not play any significant role in the ...
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Adsorption properties of cationic rhodamine B dye onto metals chloride-activated castor bean residue carbons
This work was aimed to evaluate the feasibility of castor bean residue based activated carbons prepared through metals chloride activation. The activated carbons were characterized for textural properties and surface chemistry, and the adsorption data of rhodamine B were established to investigate the removal performance. Zinc chloride-activated carbon with specific surface area of 395 m2/g ...
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Neelanajn Carbon Offers-Granular Active Carbon
NC - Granular Active Carbon Characteristics: Mainly applicable to the discoloration, deodorization, sterilization, disinfection and refinement of mono-sodium glutamate, sugars, alcoholic drinks, greases and refreshment drinks in the food industry. The product features high absorptive capacity, quick absorption, high purity and easy ...
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Activated Carbon for Precious Metals Recovery
Untitled Document Summary: Guidelines are presented for the selection, handling and regeneration of activated carbon used in gold recovery operations. The guidelines are based on Calgon Carbon Corporation's own investigations and experience gained in working with gold mine operators all over the world. Gold adsorption rate and adsorption capacity are shown to be ...
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Supercritical water gasification of ethanol fermentation residue of seaweed: effect of sodium chloride salt
The effects of sodium chloride salt on the supercritical water gasification of ethanol fermentation residue of seaweed with and without the presence of catalyst (activated carbon) were investigated. The presence of activated carbon did not affect the carbon gasification efficiency. By increasing the salt concentration, the carbon gasification efficiency is reduced until one point, the carbon ...
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Analysis of adsorption equilibrium for aqueous solution of weak organic electrolyte-activated carbon system
Several models for the adsorption of weak organic electrolytes on activated carbons from dilute aqueous solutions have been reported recently. It is apparent, however, that the electrokinetics of carbon surface has not been sufficiently addressed by these studies. The present treatment therefore employed the fundamental concepts provided by these studies, in conjunction with electrokinetic ...
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Phenol adsorption by activated carbon produced from spent coffee grounds
The present work highlights the preparation of activated carbons (ACs) using spent coffee grounds, an agricultural residue, as carbon precursor and two different activating agents: water vapor (ACW) and K2CO3 (ACK). These ACs presented the microporous nature and high surface area (620–950 m2 g−1). The carbons, as well as a commercial activated carbon (CAC) used as reference, were evaluated as ...
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