• MetakaolinBased Geopolymers for Targeted Adsorbents to ...

    Geopolymer adsorbents were prepared from silica and metakaolin in different Al and Si components and applied for removal of metal ions, Cs+ and Pb2+, from other heavy metal ions mixture. The geopolymer was optimized at Si/Al = 2 as adsorbent, targeting to Cs+ and Pb2+ separation. The binding behavior was well fitted to Langmuir model, which proved that the metakaolinbased geopolymer had ...

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  • Fluoride Adsorption by Calcium Carbonate, Activated ...

    The aim of this research work is to develop a novel cost effective strategy for fluoride removal, applicable to rural areas of developing countries. Most of the adsorbent based technologies for fluoride removal work at acidic pH which is not a feasible condition for application in rural areas. This study investigates the feasibility of three lowcost adsorbents (calcium carbonate, activated ...

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  • Identification of two lowcost and locally available ...

    May 15, 2018· Tannery wastewater contains the most hazardous pollutants. Therefore, identifying potentially efficient, lowcost and locally available filter media as an adsorbent for the treatment of tannery wastewater is critical. The aim of this study is to identify and assess the ability of identified adsorbents and compare their efficiency. The volcanic rocks of pumice and scoria were collected from the ...

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  • Optimizing fluoride arsenic removal with gravitydriven ...

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  • Fluoride in Drinking Water and Defluoridation of Water ...

    Fluoride in Drinking Water and Defluoridation of Water. ... Performance and mechanism of hierarchically porous Ce–Zr oxide nanospheres encapsulated calcium alginate beads for fluoride removal from water. Liang Chen, Kaisheng Zhang ... Life cycle assessment of adsorbents for fluoride removal from drinking water in East Africa. Teshome L. Yami ...

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  • Calcium oxide | CaO PubChem

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  • A critical study on efficiency of different materials for ...

    A critical study on efficiency of different materials for fluoride removal from aqueous media. Chemistry Central Journal, Mar 2013 Vaishali Tomar, Dinesh Kumar. Vaishali Tomar. Dinesh Kumar ... A critical study on efficiency of different materials for fluoride removal from aqueous media ...

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  • A Review on Adsorption of Fluoride from Aqueous Solution

    Sep 05, 2014· However, with fluoride concentration decreasing, a lot of adsorbents lose the fluoride removal capacity, the lowest limit for fluoride reduction by most of the adsorbents is 2 mg/L; therefore, they are not suitable for drinking water, especially as some of them can only work at an extreme pH value, such as activated carbon which is only ...

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  • Study of Fluoride Affinity by Zirconium Impregnated Walnut ...

    This paper examines the kinetics of fluoride removal from water by the adsorbent zirconiumimpregnated walnutshell carbon (ZIWSC), exploring the mechanisms involved. The dependence of the adsorption of fluoride on the pH of the solution has been studied to achieve the optimum pH value and a better understanding of the adsorption mechanism. The presence of bicarbonate ions in aqueous .

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  • Fluoride Adsorption onto AcidTreated Diatomaceous Mineral ...

    Acid treated diatomaceous earth (ATDE) from a mining site in Kenya was evaluated for its removal of F from aqueous solutions using adsorption batch experiments. The effect of initial F concentration, adsorbent dosage, contact time, temperature, pH and competing anions was studied. The adsorption process was very fast reaching an initial equilib rium in just 10 min. Fluoride adsorption onto ...

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