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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Investigation on the pyrolysis of cow bone as a catalyst for ozone aqueous decomposition: Kinetic approach
TL;DR: In this article, the feasibility of using pyrolysis of cow bone (PCB) as a catalyst for ozone aqueous decomposition was investigated and the contribution of a radical reaction mechanism on the ozone decay rate was subsequently determined.
Journal ArticleDOI
A dynamic scheduling method of Earth-observing satellites by employing rolling horizon strategy.
TL;DR: The rolling horizon (RH) strategy is proposed according to the independent arriving time and deadline of the imaging tasks, and the scheduling horizon is decomposed into a series of static scheduling intervals to realize the dynamic scheduling of EOS.
Journal ArticleDOI
Effects of Interactions between the Constituents of Chitosan-Edible Films on Their Physical Properties
Miguel A. Cerqueira,Bartolomeu W.S. Souza,Bartolomeu W.S. Souza,José A. Teixeira,António A. Vicente +4 more
TL;DR: In this paper, the effect of chitosan and plasticizer concentrations and oil presence on the physical and mechanical properties of edible films was evaluated through the evaluation of permeability, opacity, and Young's modulus.
Journal ArticleDOI
Physical aging of layered glassy polymer films via gas permeability tracking
TL;DR: In this paper, the authors measured the gas permeability of polysulfone and rubbery polyolefin (Rubber Polyolefin) polymers in the presence of aging.
Journal ArticleDOI
Photocatalytic Based Degradation Processes of Lignin Derivatives
Colin Awungacha Lekelefac,Nadine Busse,Michael Herrenbauer,Peter Czermak,Peter Czermak,Peter Czermak +5 more
TL;DR: In this paper, a review of recent advances in the photochemical transformation of industrial lignins is presented, where the influence of various process parameters such as photocatalysts, metal ions, additives, lignin concentration, and illumination intensity are discussed.
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.