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.

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Adsorption of Fluoride from Water Solution on Bone Char

During the last 30 years, environmental issues about the chemical and biological contaminations of water have become a major concern for society, public authorities and the industry. Most domestic and industrial activities produce wastewaters containing undesirable toxic contaminants. In this context, a constant effort must be made to protect water resources. Current wastewater treatment methods involve a combination of physical, chemical and biological processes, and operations to remove insoluble particles and soluble contaminants from effluents. This article provides an overview of methods for wastewater treatment, and describes the advantages and disadvantages of available technologies.

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Advantages and disadvantages of techniques used for wastewater treatment

Active agents and mechanism of coagulation of turbid waters using Moringa oleifera

https://hal-upec-upem.archives-ouvertes.fr/hal-01721053/document

An overview on the removal of synthetic dyes from water by electrochemical advanced oxidation processes.

Treatment of textile wastewaters by electrocoagulation using iron and aluminum electrodes.

Process chemistry for water and wastewater treatment , Process chemistry for water and wastewater treatment , کتابخانه دانشگاه علوم پزشکی و خدمات بهداشتی درمانی کرمان

Process Chemistry for Water and Wastewater Treatment

Treatment plant hydraulics for environmental engineers , Treatment plant hydraulics for environmental engineers , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

Larry D. Benefield

Papers

Process Chemistry for Water and Wastewater Treatment

Treatment Plant Hydraulics for Environmental Engineers