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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Fluoride removal from water by chitosan derivatives and composites: A review
TL;DR: In this article, the recent developments in the F − removal in water treatment, using chitosan derivatives and composites in order to provide useful information about the different technologies.
Journal ArticleDOI
Classical atomistic simulations of surfaces and heterogeneous interfaces with the charge-optimized many body (COMB) potentials
Tao Liang,Tzu-Ray Shan,Yu Ting Cheng,Bryce D. Devine,Mark J. Noordhoek,Yangzhong Li,Zhize Lu,Simon R. Phillpot,Susan B. Sinnott +8 more
TL;DR: The COMB formalism, which merges variable charge electrostatic interactions with a classical analytical potential, has the capacity to adaptively model metallic, covalent, ionic and van der Waals bonding in the same simulation cell and dynamically determine the charges according to the local environment as mentioned in this paper.
Journal ArticleDOI
Recent Development in Chemical Depolymerization of Lignin: A Review
Hai Wang,Melvin P. Tucker,Yun Ji +2 more
TL;DR: In this paper, the authors reviewed the recent development of chemical depolymerization of lignins and discussed five types of treatment discussed, including base-catalyzed, acid-calyzed and metallic catalyzed, ionic liquids-assisted, and supercritical fluids-assisted lignin depolymers.
Journal ArticleDOI
Biomass Valorization for Fuel and Chemicals Production - A Review
TL;DR: A detailed review of the many processes that can convert biomass into fuels and chemicals can be found in this paper, where it is recommended that a biorefinery is the best solution to combine and integrate various processes to maximize economic and environmental benefits while minimizing waste and pollution.
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A review of wet air oxidation and Thermal Hydrolysis technologies in sludge treatment.
TL;DR: Current hydrothermal technologies, roles of wet air oxidation and thermal hydrolysis in sludge treatment, and challenges faced by these technologies are reviewed.
References
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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.
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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.