Journal ArticleDOI
Adsorption of Fluoride from Water Solution on Bone Char
Nahum Andrés Medellín-Castillo,Roberto Leyva-Ramos,Raúl Ocampo-Pérez,Ramon F. Garcia De La Cruz,Antonio Aragón-Piña,Jose M. Martinez-Rosales,R.M. Guerrero-Coronado,Laura Fuentes-Rubio +7 more
TLDR
In this article, the effects of solution pH and temperature on the adsorption of fluoride onto bone char made from cattle bones were investigated, and it was found that the maximum adaption took place at pH 3.Abstract:
The effects of solution pH and temperature on the adsorption of fluoride onto bone char made from cattle bones were investigated in this work. It was found that the maximum adsorption took place at pH 3 and the adsorption capacity decreased nearly 20 times augmenting the pH from 3 to 12. This behavior was attributed to the electrostatic interactions between the surface of bone char and the fluoride ions in solution. The adsorption capacity was not influenced by temperature in the range from 15 to 35 °C. A comparison of fluoride adsorption capacities among several adsorbents revealed that the adsorption capacity of the bone char was 2.8 and 36 times greater than those of a commercial activated alumina (F-1) and a commercial activated carbon (F-400). The adsorption capacity is considerably dependent upon the physicochemical properties of the bone char surface and the solution pH.read more
Citations
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A Four-Type Decision-Variable MINLP Model for a Supply Chain Network Design
TL;DR: In this article, a mixed integer nonlinear programming model for the design of a one-period planning horizon supply chain with integrated and flexible decisions on location of plants and of warehouses, on levels of production and of inventory, and on transportation models, considering stochastic demand and the ABC classification for finished goods.
Journal ArticleDOI
Surface evaluation by estimation of fractal dimension and statistical tools.
Vlastimil Hotar,Petr Salač +1 more
TL;DR: A methodology for describing the structured data complexity and applied in development and industrial practice using fractal dimension together with statistical tools and with software modification is able to analyse data in a form of sequence, 2D images, and dividing lines.
Journal ArticleDOI
Sorption of Ammonium Ions onto Natural and Modified Egyptian Kaolinites: Kinetic and Equilibrium Studies
TL;DR: In this article, thermally activated, acid-activated, and acid-leached of thermally-activated kaolinites were prepared from the Egyptian ore. The physical and chemical properties were studied using N2 sorption at −196°C, FTIR, SEM, and the total surface acidity.
Journal ArticleDOI
Fermentative production of value-added products from lignocellulosic biomass.
TL;DR: A diverse range of experimental advancements on biomass pretreatment, enzymatic saccharification, production of cellulosic biofuels, polyHydroxyalkanoates (PHA), polyhydroxybutyrate (PHB), and blends of polyacrylonitrile (PAN) and lignin are presented.
Journal ArticleDOI
Polyvinyl chloride Waste as an Adsorbent for the Sorption of from Aqueous Solution
TL;DR: In this article, the morphological features of the polymer sample were studied using the energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), XRD, and the Fourier transform infrared spectrograph (FTIR).
References
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Some aspects of the surface chemistry of carbon blacks and other carbons
TL;DR: In this paper, a review of the surface chemistry of carbon blacks and other activated carbons is given, focusing on surface oxides with emphasis on the chemical methods used in the assessment and identification of surface functional groups.
Book
Process Chemistry for Water and Wastewater Treatment
TL;DR: Process chemistry for water and wastewater treatment as mentioned in this paper, Process Chemistry for Water and Wastewater treatment, Process chemistry for wastewater treatment, and process chemistry for drinking water treatment, کتابخانه دانشگاه علوم پزδکی و خدمات بهداشتی درمانی
Journal ArticleDOI
Adsorption kinetics of fluoride on low cost materials
TL;DR: The data suggested that Calcite has been seen as a good adsorbent in fluoride removal and has been patented, but its adsorption capacity is only better than quartz, and the external mass transfer is a very slow and rate-determining step during fluoride removal from the aqueous solution.
Journal ArticleDOI
Adsorption of fluoride from water by amorphous alumina supported on carbon nanotubes
Yanhui Li,Shuguang Wang,Anyuan Cao,Dan Zhao,Dan Zhao,Xianfeng Zhang,Cailu Xu,Zhaokun Luan,Dianbo Ruan,Ji Liang,Dehai Wu,Bingqing Wei +11 more
TL;DR: A new candidate for fluoride adsorption from water, amorphous Al2O3 supported on carbon nanotubes (Al 2O3/CNTs) is reported in this article.
Journal ArticleDOI
Point of zero charge and intrinsic equilibrium constants of activated carbon cloth
TL;DR: In this paper, the surface properties of cellulose-based activated carbon cloth were investigated and the point of zero charge was determined by batch equilibrium method, where the site-binding model was applied to calculate the intrinsic acidity constants.