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
Progress in carbon dioxide separation and capture: a review.
Hongqun Yang,Zhenghe Xu,Maohong Fan,Rajender Gupta,Rachid B. Slimane,Alan E. Bland,Ian G. Wright +6 more
TL;DR: This article reviews the progress made in CO2 separation and capture research and engineering and various technologies, such as absorption, adsorption, and membrane separation are thoroughly discussed.
Journal ArticleDOI
A review on nanofluids: preparation, stability mechanisms, and applications
Wei Yu,Huaqing Xie +1 more
TL;DR: In this article, the authors summarized the recent progress on the study of nanofluids, such as the preparation methods, the evaluation methods for the stability of nanometrics, and the ways to enhance the stability for nanofl fluids, and presented the broad range of current and future applications in various fields including energy and mechanical and biomedical fields.
Journal ArticleDOI
Colour Measurement and Analysis in Fresh and Processed Foods: A Review
TL;DR: This review discusses the techniques and procedures for the measurement and analysis of colour in food and other biomaterial materials, focusing on the instrumental and visual measurements for quantifying colour attributes and highlights the range of primary and derived objective colour indices used to characterise the maturity and quality of a wide range of food products and beverages.
Journal ArticleDOI
A Comprehensive Survey on Particle Swarm Optimization Algorithm and Its Applications
TL;DR: This survey presented a comprehensive investigation of PSO, including its modifications, extensions, and applications to the following eight fields: electrical and electronic engineering, automation control systems, communication theory, operations research, mechanical engineering, fuel and energy, medicine, chemistry, and biology.
Journal ArticleDOI
State-of-the-art review of optimization methods for short-term scheduling of batch processes
TL;DR: The main goal of this paper is to provide an up-to-date review of the state-of-the-art in this challenging area of short-term batch scheduling, with a general classification for scheduling problems of batch processes as well as for the corresponding optimization models.
References
More filters
Journal ArticleDOI
Defluoridation of Moroccan ground water by electrodialysis: continuous operation
M. Tahaikt,I. Achary,M.A. Menkouchi Sahli,Z. Amor,M. Taky,A. Alami,A. Boughriba,M. Hafsi,A. Elmidaoui +8 more
TL;DR: In this article, the performance of two anionic exchange membranes were compared and an optimisation of electrodialysis operation was carried out for various experimental conditions including among others the fluoride content in the raw water.
Journal ArticleDOI
Removal of fluoride using some lanthanum(III)‐loaded adsorbents with different functional groups and polymer matrices
TL;DR: In this paper, several types of adsorbents with different functional groups loaded with lanthanum(III) were prepared to be used for removing fluoride from hot spring water and the results showed that strongly acidic adsorbants are more effective on removing fluoride at neutral pH than weakly acidic ones.
Journal ArticleDOI
Aluminum-type superparamagnetic adsorbents: Synthesis and application on fluoride removal
TL;DR: In this paper, two effective types of superparamagnetic nano-scale adsorbents of bayerite/SiO 2 /Fe 3 O 4 have been synthesized via three sequential steps: chemical precipitation of Fe 3 o 4, coating of SiO 2 on Fe o 4 using acidifying method, and further coating of al(OH) 3 ) on Si o 2 / Fe o 2 using sol-gel (MASG) or homogeneous precipitation (MAHP) methods.
Journal ArticleDOI
Surface Complexation of Calcium Minerals in Aqueous Solution.
TL;DR: In this article, the authors investigated the complexation of Alizarin Red S (ARS) at the surface of hydrous fluorite particles by means of potentiometric titrations, adsorption experiments, and ζ-potential measurements in 0.1 mol dm −3 KCl ionic medium at 25.0°C.
Journal ArticleDOI
Surface complexation of calcium minerals in aqueous solution. III: Ion exchange and acid-base properties of hydrous fluorite surfaces
Liuming Wu,Willis Forsling +1 more
TL;DR: The complexation of Alizarin Red S at the surface of hydrous fluorite particles has been investigated by means of potentiometric titrations, adsorption experiments, and zeta-potential measurements, as well as by UV/visible specular reflectance, FT-IR, and FT-Raman spectroscopy.