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
More filters
Journal ArticleDOI
Vapor pressure prediction for alkenoic and aromatic organic compounds by a UNIFAC-based group contribution method
TL;DR: In this article, a UNIFAC-based group contribution method is developed for predicting liquid vapor pressure (p L o ) values of organic compounds, including molecules containing C C bonds. But this method is not suitable for the analysis of volatile organic compounds.
Journal ArticleDOI
Solar Photocatalytic Degradation of Bisphenol A on Immobilized ZnO or TiO2
Andreas Zacharakis,Efthalia Chatzisymeon,Vassilios Binas,Zacharias Frontistis,Danae Venieri,Dionissios Mantzavinos +5 more
TL;DR: In this article, the removal of bisphenol A (BPA) under simulated solar irradiation and in the presence of either TiO2 or ZnO catalysts immobilized onto glass plates was investigated.
Journal ArticleDOI
An investigation of the reaction between 1-butyl-3-methylimidazolium trifluoromethanesulfonate and superoxide ion
Maan Hayyan,Farouq S. Mjalli,Farouq S. Mjalli,Mohd Ali Hashim,Inas M. AlNashef,Inas M. AlNashef +5 more
TL;DR: In this article, superoxide ion (O 2 − ) generation in ionic liquids (ILs) has been investigated using various types of ILs, including imidazolium based ILs.
Journal ArticleDOI
Taguchi design and equilibrium modeling for fluoride adsorption on cerium loaded cellulose nanocomposite bead
TL;DR: The equilibrium adsorption data showed that the Temkin isotherm is the most suited one compared to the Langmuir and Freundlich model, and it is found that almost 90% adsorbed fluoride can be eluted with 0.01 (N) NaOH and the regenerated bead can successively be reused for at least three times.
Journal ArticleDOI
Fundamental Investigation of Chemical Mechanical Polishing of GaAs in Silica Dispersions: Material Removal and Arsenic Trihydride Formation Pathways
John B. Matovu,John B. Matovu,Patrick Ong,Leonardus H. A. Leunissen,Sitaraman Krishnan,Suryadevara V. Babu +5 more
TL;DR: In this article, the material removal rates and AsH3 evolution were analyzed using data from contact angle measurements, X-Ray photoelectron spectroscopy (XPS), and X-ray fluorescence (XRF) spectrograms.
References
More filters
Journal ArticleDOI
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.