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
Influence of Ionic Liquid Structure on Supported Ionic Liquid Membranes Effectiveness in Carbon Dioxide/Methane Separation
TL;DR: In this article, the possibility of application of imidazolium ionic liquids immobilized in polymeric supports (supported ionic liquid membranes) in CO2 separation from gaseous streams (e.g., biogas) was indicated.
Journal ArticleDOI
Preparation and analysis of high capacity polysulfone capsules
C. van den Berg,C.P.M. Roelands,Paul Bussmann,Earl Goetheer,D. Verdoes,L.A.M. van der Wielen +5 more
TL;DR: In this article, a new generation of solvent impregnated resins is introduced, which can contain up to 11.8 ml solvent/g polymer and were prepared using a modified dry impregnation technique.
Journal ArticleDOI
Removal of Cr(VI) from Aqueous Environments Using Micelle-Clay Adsorption
Mohannad Qurie,Mustafa Khamis,Adnan Manassra,Ibrahim Ayyad,Shlomo Nir,Laura Scrano,Sabino Aurelio Bufo,Rafik Karaman +7 more
TL;DR: The micelle-clay complex used in this study was capable of removing Cr(VI) from aqueous solutions without any prior acidification of the sample and demonstrated that the removal effectiveness reached nearly 100% when using optimal conditions for both batch and continuous flow techniques.
Journal ArticleDOI
Carbon Dioxide Capture from Ambient Air Using Amine-Grafted Mesoporous Adsorbents
Annemarie Wagner,Bengt Steen,Johansson Goeran,Ezio Zanghellini,Per Jacobsson,Patrik Johansson +5 more
TL;DR: In this article, a combination of thermogravimetric analysis and Fourier transform infrared (TGA-FTIR) spectroscopy was used to evaluate the performance of poreexpanded mesoporous silica grafted with amines.
Chemical-looping combustion in a 100 kw unit for solid fuels
TL;DR: In this paper, the authors describe results from operation in a 100 kWth chemical-looping combustor for solid fuels, where coal is fed directly into a loop seal, leading to the fuel reactor, through a set of screws.
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.