Novel Low-cost Activated Carbon from Coconut Shell and Its Adsorptive Characteristics for Carbon Dioxider PDF Download
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Author: Nor Adilla Rashidi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Nor Adilla Rashidi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Miguel Manuel Manuel Pérez Hernández
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Activated charcoal was prepared and characterized from residues of coconut peel (CACC) to remove by adsorption the Methyl Orange (AM) dye in aqueous solution. The charcoal was activated with phosphoric acid. The morphology and structure of the pores of the carbon obtained were analyzed by Scanning Electron Microscopy (SEM) and a surface analyzer. The adsorption data were evaluated by the BET, Langmuir and Freundlich isotherms, finding the Langmuir type I model. The surface area of the activated carbon was 526 m2/g with a pore volume of 0.234¬†cm3/g and an average pore diameter of 1.78¬†nm, according to BET, which indicates the presence of micropores. The calculated thermodynamic parameters showed that the adsorption of the AM dye in CACC is a spontaneous process at room temperature and that physisorption and chemisorption are probably involved. The adsorption tests were followed by UV,Äìvisible spectrophotometry. The effects of the adsorbate concentration (AM) and the heat treatment (450,Äì500¬∞C) with an air atmosphere were investigated, keeping constant the stirring time and the H3PO4/sample weight ratio. The results obtained indicate that the activated carbon obtained could be used as an alternative low-cost adsorbent in the removal of AM from effluents in aqueous solution.
Author: Roop Chand Bansal
Publisher: CRC Press
ISBN: 1420028812
Category : Science
Languages : en
Pages : 498
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High surface area, a microporous structure, and a high degree of surface reactivity make activated carbons versatile adsorbents, particularly effective in the adsorption of organic and inorganic pollutants from aqueous solutions. Activated Carbon Adsorption introduces the parameters and mechanisms involved in the activated carbon adsorption
Author: Chandrabhan Verma
Publisher: Royal Society of Chemistry
ISBN: 1839169877
Category : Science
Languages : en
Pages : 267
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Activated carbon has long been used for filtering contaminants, thanks to its large surface area for adsorption. This, and other properties has led to a growing interest in activated carbon and a broader range of applications. This book explores the various forms of activated carbon, detailing how they can be prepared and characterised. The editors bring together a global team of authors from industry and academia. Their contributions include environmental and medical applications, as well as various industries. Future directions are also considered. The editors are at the Interdisciplinary Center for Research in Advanced Materials, King Fahd University of Petroleum and Minerals, Saudi Arabia. They present an up-to-date and comprehensive reference aimed at all career levels in chemistry and materials science, engineering and research across the diverse industries finding a use for activated carbon.
Author: Zarina Zakaria
Publisher:
ISBN:
Category :
Languages : en
Pages : 162
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Author: Gopinath Halder
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659148477
Category :
Languages : en
Pages : 176
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Refrigeration technique on account of its multidimensional approach is obligatory to meet the need for daily life. This mechanism virtually encompasses the transfer of heat from the low temperature region (source) to the high temperature region (sink) by means of a working fluid called refrigerant. Conventional refrigeration, air conditioning and heat pump systems have been employing halogenated refrigerants such as CFCs, HCFCs and HFCs over many decades due to their excellent thermodynamic and thermo-physical properties. But these refrigerants have potent negative impact on the environment. In view of this alarming problem, the exploration of alternative and promising refrigerant having zero ODP and GWP with a suitable refrigeration system for the replacement of halogenated refrigerants is the need of the hour. In this regard, adsorption refrigeration system could be a unique solution. Because, it is well established that activated carbon developed from matured coconut shell has an excellent gas adsorption properties and the process is exothermic, which becomes endothermic during desorption of gases.
Author: Yee Ling Tan
Publisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 292
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Author:
Publisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 56
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Author:
Publisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 0
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Activated carbons have been produced from various carbonaceous source materials including nutshells, peat, wood, coir, lignite, coal and petroleum pitch and the produced carbons have been used for adsorption of inorganic and organic compounds from numerous matrices. Activated carbons are characterized by large surface area and high degree of microporosity. The ability of activated carbon to adsorb gold from solutions, which is present in very low concentrations while loading to fairly high concentrations, has made it an attractive material for the concentration of gold from dilute solutions. Consequently, the use of activated carbons for the recovery of gold from cyanide-leached liquors has gained wide acceptance in the mining industry. However, the price of commercially prepared carbons, the time taken for them to arrive, the breakage of the carbon during transportation and the interest in utilization of various local wastes for the generation of adsorbents has led to a search of more cost effective and time friendly source for the activated carbons. The focus of this research was to conduct a study in which a comparison was conducted between untreated coconut shell derived activated carbon (CAC) and Macadamia nutshell derived activated carbon (MAC) for the adsorption of gold.
Author: Madhukar Bhaskara Rao
Publisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 282
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