activated carbon adsorber Articles
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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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Testing monolithic activated carbon adsorbers for in-line removal of organic micropollutants
Anthropogenic organic micropollutants (OMP) occur along the whole urban water cycle including drinking water. Various OMP can be efficiently adsorbed onto activated carbon. In the present study a commercial monolithic adsorber (MA), originally developed for gas treatment, was examined for the removal of OMP from drinking water. As a promising advantage, the adsorber can be introduced into ...
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Using carbon adsorbents for removing nitrogen oxides and sulphur oxides from flue gases
The use of carbon adsorbents in industrial power engineering outside Russia is briefly reviewed and the results of our own experimental investigations, made in the laboratory and at a pilot commercial installation, are given. The proposal to use the described device in a KE-25-24-C industrial boiler is outlined.Keywords: fluegas, nitrogen oxides, sulphur oxides, adsorbtion-reduction cleaning, ...
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Abatement of Cr(VI) rich wastewater in a novel multistage External Loop Airlift Reactor using acidified activated carbon
In the present investigation, a multistage External Loop Airlift Reactor (ELALR) has been used for the treatment of Cr(VI) rich wastewater using acidified activated carbon as the adsorbent. The multistaging has been achieved by hydrodynamically induced continuous bubble generation, break-up and regeneration. The continuous rupture and bursting of bubbles creates localised turbulence and ...
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Activated Carbons from lignocellulosic waste materials for water treatment: a review
Activated Carbon (AC) adsorbents are commonly used to remove pollutants from water because of their excellent sorption ability. However, commercially available ACs are expensive. In developing countries where economy plays a very big role, it is better to find low-cost locally available precursors, which are renewable resources for the preparation of ACs. This review focuses on ACs prepared from ...
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Comparison between Brazilian agro-wastes and activated carbon as adsorbents to remove Ni(II) from aqueous solutions
This research was performed to find an alternative, low-cost, competitive, locally available and efficient adsorbent to treat nickel (Ni) containing effluents. For this purpose, several Brazilian agro-wastes like sugarcane bagasse (SCB), passion fruit wastes (PFW), orange peel (OP) and pineapple peel (PP) were compared with an activated carbon (AC). The adsorbents were characterized. Effects ...
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Activated carbon cloth: a potential adsorbing/oxidizing catalyst for phenolic wastewater
An investigation into the use of activated carbon cloth (ACC) as a potential adsorbent and/or catalyst for oxidation processes is reported. The extent of increase/decrease of oxidation/adsorption of phenol, as measured by total organic carbon content (%), is explained by considering the effects of the oxidants such as ozone and hydrogen peroxide on the activated carbon cloth. Results also show ...
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Assessment of Activated Carbon Stability toward Adsorbed Organics
Activated carbon technology is widely employed in solvent recovery and air pollution abatement systems. Activated carbon beds containing organic molecules sometimes come into contact with air or oxygen, in some cases, as a consequence of their normal operations. A number of investigators (Miller et al., 1987; Chapman and Field, 1979) have reported exothermic runaway reactions under these ...
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Enhanced removal of Cr (VI) from aqueous solution by mesoporous activated carbons
The capability of mesoporous activated carbons (MACs) to adsorb Cr (VI) in aqueous solution was investigated. The MACs were prepared in the lab from upgraded coal tar pitch using the nano–sized imprinting method. Adsorption of Cr (VI) was found to be dependent on the solution pH. The adsorption kinetic data was found to fit well with a pseudo–second–order rate equation. Three adsorption isotherm ...
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Removal of potentially toxic elements from aqueous solutions and industrial wastewater using activated carbon
Water contamination with potentially toxic elements (PTEs) has become one of the key issues in recent years that threatens human health and ecological systems. The present study is aimed at removing PTEs like cadmium (Cd), chromium (Cr), copper (Cu) and lead (Pb) from aqueous solutions and industrial wastewater using activated carbon (AC) as an adsorbent through different batch and column ...
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Comparative performance of cement kiln dust and activated carbon in removal of cadmium from aqueous solutions
This study compared the performance of cement kiln dust (CKD) as industrial byproduct and commercially activated carbon (AC) as adsorbent derived from agricultural waste for the removal of cadmium (Cd2+) from aqueous solutions. CKD and AC were characterized by Fourier transform infrared (FTIR) and scanning electron microscopy (SEM) and surface areas demonstrate the differences of ...
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A pilot plant study of the processes of filtration and adsorption of drinking water through granular activated carbons: a comparative study
This study reports a procedure for the evaluation and comparison of the adsorption and filtration capacities of commercial activated carbons in the treatment of drinking water and the design and operation of a pilot plant to simulate the behavior of fast open filters made of granular activated carbon. The milestone of this experimental work was to determine the adsorption and filtration ...
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What is a spray tower?
Spray tower, also known as scrubber, wet scrubber, is waste gas treatment equipment. The exhaust gas is fully contacted with the liquid, and the concentration of the waste gas is reduced by using its solubility in water or chemical reaction, so as to become a clean gas that meets the national emission standards. It is mainly used to treat inorganic waste gas, such as sulfuric acid mist, hydrogen ...
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Introduction of scrubber + activated carbon adsorption exhaust gas purification device
Washing tower + activated carbon adsorption exhaust gas purification device It is suitable for the treatment of waste gas with low concentration and non-single components. The granular dust, smoke and grease can be removed through the water shower tower. The treated waste gas is absorbed by the activated carbon adsorption tower. The function of the water shower tower is to purify the waste gas ...
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Removal of ammoniacal nitrogen and COD from semi-aerobic landfill leachate using low-cost activated carbon?zeolite composite adsorbent
A carbon-zeolite composite adsorbent has been studied for COD and ammoniacal nitrogen removal in semi-aerobic landfill leachate. The optimum conditions for adsorption in the batch study occurred at pH 7, shaking speed of 200 rpm, and contact time of 105 min. The Langmuir isotherms corresponded slightly better than Freundlich isotherm for both ammoniacal nitrogen and COD removals. The Langmuir ...
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Ceresco Dam Case Study
Global was contracted by Terra Contracting Services, LLC to serve as Water Treatment Specialists in response to the 2010 Enbridge Oil Spill along the Kalamazoo River. An energy pipeline rupture caused 877,000 gallons of heavy crude oil to spill into Talmadge Creek in Calhoun County, Michigan, which flows into the Kalamazoo River. Global engineered a processing plant for material and slurry ...
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Hydrocarbon evaporative emissions & control for automotives
Even the cleanest and most efficient vehicle on the market today still pollutes the air and otherwise damages the environment. Motor vehicles emit several noxious pollutants which vehicle emissions standards are designed to regulate. Vehicles generally emit Hydrocarbons (HC), Carbon monoxide (CO), Nitrogen oxides (NOx) and Fine airborne particulate matter (PM) as pollutants that require control. ...
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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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Biofiltration: An Innovative Technology for The Future
Biofiltration refers to the biological transformation or treatment of contaminants present in the gas phase, usually air. The fact that air contaminants can be biodegraded by active bacteria has been known for quite some time. However, it is only in the last 10 years, that biofiltration has begun to emerge as an economically viable treatment process. Initially, biofiltration involved the use of ...
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Charcoal Making Machines Offer Solutions for Activated Carbon Production
Introduction Activated carbon, a versatile adsorbent known for its remarkable properties, plays a pivotal role in various industries. Its production, however, demands precision and sustainable practices. Here, we delve into the world of charcoal making machines and how they provide solutions for efficient and environmentally friendly activated carbon production. Understanding Activated Carbon ...
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