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Book Advances in Nanotechnology and Its Applications

Download or read book Advances in Nanotechnology and Its Applications written by Ahmad Tariq Jameel and published by Springer Nature. This book was released on 2020-08-27 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights current trends and research advances in nanotechnology and its applications. It discusses the synthesis and characterization of nanomaterials / nanocomposites for novel applications in environmental monitoring and sustainability, and presents new findings on wastewater treatment technologies using nanofiltration membranes.

Book Coconut Shell Charcoal Adsorption to Remove Methyl Orange in Aqueous Solutions

Download or read book Coconut Shell Charcoal Adsorption to Remove Methyl Orange in Aqueous Solutions written by Miguel Manuel Manuel P√©rez Hern√°ndez and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Surface treated Activated Carbon for Removal of Phenol from Water

Download or read book Surface treated Activated Carbon for Removal of Phenol from Water written by O. P. Mahajan and published by . This book was released on 1980 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Activated Carbon for Water and Wastewater Treatment

Download or read book Activated Carbon for Water and Wastewater Treatment written by Ferhan Cecen and published by John Wiley & Sons. This book was released on 2011-09-19 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides comprehensive coverage of technologies which integrate adsorption and biological processes in water and wastewater treatment. The authors provide both an introduction to the topic as well as a detailed discussion of theoretical and practical considerations. After a review of the basics involved in the chemistry, biology and technology of integrated adsorption and biological removal, they discuss the setup of pilot- and full-scale treatment facilities, covering powdered as well as granular activated carbon. They elucidate the factors that influence the successful operation of integrated systems. Their discussion on integrated systems expands from the effects of environmental to the removal of various pollutants, to regeneration of activated carbon, and to the analysis of such systems in mathematical terms. The authors conclude with a look at future needs for research and develoment. A truly valuable resource for environmental engineers, environmental and water chemists, as well as professionals working in water and wastewater treatment.

Book Journal of Scientific Industrial Research

Download or read book Journal of Scientific Industrial Research written by and published by . This book was released on 2002 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effectiveness of Activated Carbon from Coconut Shell as Wastewater Pollutant Removal

Download or read book The Effectiveness of Activated Carbon from Coconut Shell as Wastewater Pollutant Removal written by Muhamed Faliq Alif Azhari and published by . This book was released on 2010 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Activated Carbon Adsorption of Trace Organic Compounds

Download or read book Activated Carbon Adsorption of Trace Organic Compounds written by Vernon L. Snoeyink and published by . This book was released on 1977 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Adsorption of Chlorophenols on Granular Activated Carbon

Download or read book Adsorption of Chlorophenols on Granular Activated Carbon written by Maoyu Yang and published by . This book was released on 1993 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were undertaken of the adsorption of chlorinated phenols from aqueous solution on granular activated carbon (Filtrasorb-400, 30x40 mesh). Single-component equilibrium adsorption data on the eight compounds in two concentration ranges at pH 7.0 fit the Langmuir equation better than the Freundlich equation. The adsorptive capacities at pH 7.0 increase from pentachiorophenol to trichiorophenols and are fairly constant from trichiorophenols to monochlorophenols. Equilibrium studies were performed at various temperatures at pH 7.0. The adsorption process was found to be exothermic for pentachiorophenol and 2,4,6-trichiorophenol, and endothermic for 2,4-dichlorophenol and 4-chlorophenol. Equilibrium measurements were also conducted for 2,4,5-trichiorophenol, 2,4-dichlorophenol, and 4-chlorophenol over a wide pH range. A surface complexation model was proposed to describe the effect of pH on adsorption equilibria of chlorophenols on activated carbon. Activated carbon surface functional sites are divided into acidic groups and basic groups with which molecular and ionized forms of chiorophenols interact, respectively, to form two neutral surface complexes, of which the complex of basic groups is more substantial and more stable than that of acidic groups. The simulations of the model are in excellent agreement with the experimental data. Batch kinetics studies were conducted of the adsorption of chlorinated phenols on granular activated carbon. The external film diffusion model, linear-driving-force approximation, and surface reaction kinetics model were employed to fit the adsorption kinetics data of chlorophenols. The results show that the surface reaction model best describes both the short-term and long-term kinetics, while the external film diffusion model describes the short-term kinetics data very well and the linear-driving-force approximation improved its performance for the long-term kinetics. The mass transfer coefficient was found to increase from more chlorinated compounds to less chlorinated compounds. Two-component adsorption kinetics experiments revealed that the adsorption of chlorophenols on activated carbon is to some extent an irreversible process and non-ideal competition between two components exists. Multicomponent adsorption equilibria of chiorophenols on granular activated carbon was investigated in the micromolar equilibrium concentration range. The Langmuir competitive and Ideal Adsorbed Solution (IAS) models were tested for their performances on the three binary systems of pentachlorophenol/2,4,6-trichlorophenol, 2,4,6-trichlorophenol/2,4-dichlorophenol, and 2,4-dichlorophenol/4-chlorophenol, and the tertiary system of 2,4,6-trichlorophenol/2,4-dichlorophenol/4-chlorophenol, and found to fail to predict the two-component adsorption equilibria of the former two binary systems and the tertiary system. A new prediction method and a modification of the IAS model, both based on thermodynamic considerations, were proposed. The required parameters are the single-component Langmuir isotherm constants and initial concentrations for each component The proposed new method and the modification of the IAS model were found to significantly improve the accuracy of the predictions of two-component adsorption equilibria of chlorophenols. This new method also performs much better than the Langmuir competitive and IAS models in the three-component system. Studies were also conducted on the desorption equilibria and kinetics of chlorophenols. The results indicate that the Langmuir equation fits both adsorption and desorption equilibrium data better than the Freundlich equation and the degree of the irreversibility of adsorption increases from 4-chlorophenol to pentachlorophenol. A linear-driving-force desorption rate equation was proposed, which describes the desorption kinetic data very well. The desorption mass transfer coefficients were found to increase from pentachiorophenol to 4-chlorophenol.

Book Preparation and Surface Modification of Activated Carbon from Coconut Shells for Benzene and Toluene Adsorption from Water

Download or read book Preparation and Surface Modification of Activated Carbon from Coconut Shells for Benzene and Toluene Adsorption from Water written by Mohammed Jibril and published by . This book was released on 2015 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Application of Coconut Shell Activated Carbon for Water Treatment

Download or read book The Application of Coconut Shell Activated Carbon for Water Treatment written by Yusri Sulaiman and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: