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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Extraction of Flavonoids from Bitter Melon
TL;DR: In this article, the authors used five solvents (ethanol, methanol, butanol, acetone and water) to extract the flavonoid content of six varieties of bitter melon.
Journal ArticleDOI
Thermal regeneration process of bone char used in the fluoride removal from aqueous solution
TL;DR: In this article, a thermal regeneration process of bone char (BC), used in fluoride adsorption, was investigated in order to get an insight about the physical and chemical transformations, showing the evidence that there was diffusion of fluoride ions into bone char particles during thermal regeneration.
Journal ArticleDOI
Production of high carbon number hydrocarbon fuels from a lignin-derived α-O-4 phenolic dimer, benzyl phenyl ether, via isomerization of ether to alcohols on high-surface-area silica-alumina aerogel catalysts
Ji Sun Yoon,Ji Sun Yoon,Yunsu Lee,Yunsu Lee,Jihye Ryu,Jihye Ryu,Young-A Kim,Eun Duck Park,Jae-Wook Choi,Jeong-Myeong Ha,Jeong-Myeong Ha,Jeong-Myeong Ha,Dong Jin Suh,Dong Jin Suh,Dong Jin Suh,Hyunjoo Lee +15 more
TL;DR: Two-step hydrodeoxygenation of benzyl phenyl ether (BPE), a lignin-derived phenolic dimer containing an α-O-4 linkage, was performed to produce high carbon number saturated hydrocarbons as mentioned in this paper.
Journal ArticleDOI
Development and Characterization of Soy Protein Isolate Emulsion-Based Edible Films with Added Coconut Oil for Olive Oil Packaging: Barrier, Mechanical, and Thermal Properties
TL;DR: In this article, the effect of VCO and SL concentrations in emulsion-based films and their in-between interaction were studied through the evaluation of physical (moisture and opacity), mechanical (elongation and tensile strength), water vapor permeability, and thermal properties.
Journal ArticleDOI
Reactive extraction of citric acid using tri-n-octylamine in nontoxic natural diluents: part 1--equilibrium studies from aqueous solutions.
TL;DR: Use of cheap, nontoxic, and selective solvents could economically provide a solution to the recovery of carboxylic acids produced by the bioroute by using tertiary amine (tri-n-octylamine, TOA) in natural diluents.
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.