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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CFD Modeling and Simulation of Hydrodynamics in a Fluidized Bed Dryer with Experimental Validation
TL;DR: In this article, the hydrodynamics of a two-dimensional nonreactive gas-solid fluidized bed dryer was investigated using a multifluid Eulerian model incorporating the kinetic theory for solid particles.
Journal ArticleDOI
Photodegradation of petrol station wastewater after coagulation/flocculation with tannin-based coagulant
A.M. Ferrari-Lima,R.G. Marques,Nádia Regina Camargo Fernandes-Machado,Marcelino Luiz Gimenes +3 more
TL;DR: In this paper, the combined treatment of petrol station wastewater by coupling coagulation/flocculation and heterogeneous photocatalysis processes was investigated, and the results showed that high reductions of absorbance, chemical oxygen demand and elimination of toxicity to Artemia salina was achieved with TiO 2, ZnO and Nb 2 O 5 as photocatalysts.
Journal ArticleDOI
Treatment of wastewater containing arsenic using Rhazya stricta as a new adsorbent
TL;DR: Removal of arsenic (As) from aqueous solutions was studied using Rhazia stricta biomass using various adsorption isotherm models such as Langmuir, Freundlich, Tempkin and Generalized equation.
Journal ArticleDOI
Electrochemical Investigation on Adsorption of Fluconazole at Mild Steel/HCl Acid Interface as Corrosion Inhibitor
TL;DR: In this paper, the interfacial behavior of fluconazole on mild steel was studied by electrochemical methods, namely, polarization (Tafel Plot) and Electrochemical Impedance Spectroscopy (EIS).
Journal ArticleDOI
One-Step Cohydrothermal Synthesis of Nitrogen-Doped Titanium Oxide Nanotubes with Enhanced Visible Light Photocatalytic Activity
TL;DR: In this paper, the photocatalytic activity of nitrogen-doped TiO2 nanotubes was evaluated by the decomposition of rhodamine B dye solution under visible light using UV-vis absorption spectroscopy.
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.
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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.