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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The Effects of MHD Flow and Heat Transfer for the UCM Fluid over a Stretching Surface in Presence of Thermal Radiation
TL;DR: In this article, the effect of MHD and thermal radiation on the two-dimensional steady flow of an incompressible, upper-convected Maxwells (UCM) fluid in presence of external magnetic field was investigated.
Journal ArticleDOI
Cow bones char as a green sorbent for fluorides removal from aqueous solutions: batch and fixed-bed studies
Elbert M. Nigri,Maria Alice Prado Cechinel,Diego A. Mayer,Luciana P. Mazur,José M. Loureiro,Sônia Denise Ferreira Rocha,Vítor J.P. Vilar +6 more
TL;DR: A mass transfer model considering the pore diffusion was able to satisfactorily describe the experimental data obtained in batch and continuous systems and fitted well the equilibrium sorption data.
Journal ArticleDOI
Use of bone char prepared from an invasive species, pleco fish (Pterygoplichthys spp.), to remove fluoride and Cadmium(II) in water
Nahum Andrés Medellín-Castillo,Sergio Armando Cruz-Briano,Roberto Leyva-Ramos,Juan Carlos Moreno-Piraján,Arturo Torres-Dosal,Liliana Giraldo-Gutierréz,Gladis Judith Labrada-Delgado,Raul Ocampo Pérez,Jenny Paola Rodriguez-Estupiñan,Simón Yobanny Reyes López,María Selene Berber Mendoza +10 more
TL;DR: In this article, the textural and physicochemical properties of bone char from pleco fish (Pterygoplichthys spp.) were determined, as well as its adsorption capacity towards fluoride and Cd(II) from single and binary aqueous solutions.
Journal ArticleDOI
Disposal and Treatment Methods for Pesticide Containing Wastewaters: Critical Review and Comparative Analysis
TL;DR: A comparative analysis was performed on 18 methods of pesticide disposal/treatment using six criteria: containment, detoxification ability, cost, time, suitability for on farm use, size and evaporation efficiency as mentioned in this paper.
Journal ArticleDOI
Optimizing booster chlorination in water distribution networks: a water quality index approach
TL;DR: An innovative scheme for maintaining adequate residual chlorine with optimal chlorine dosages and numbers of booster locations was established based on a proposed water quality index (WQI), and may prove useful for small or rural communities where free residual chlorine is considered as the only water quality criterion.
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
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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.