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- W1777998439 endingPage "568" @default.
- W1777998439 startingPage "543" @default.
- W1777998439 abstract "Increasing amount of dyes in the ecosystem particularly in wastewater has propelled the search for more efficient low-cost adsorbents. The effective use of the sorption properties (high surface area and surface chemistry, lack of toxicity and potential for ion exchange) of different clays as adsorbents for the removal of different type of dyes (basic, acidic, reactive) from water and wastewater as potential alternatives to activated carbons has recently received widespread attention because of the environmental-friendly nature of clay materials. Insights into the efficiencies of raw and modified/activated clay adsorbents and ways of improving their efficiencies to obtain better results are discussed. Acid-modified clay resulted in higher rate of dye adsorption and an increased surface area and porosity (49.05 mm2 and 53.4 %). Base-modified clay has lower adsorption capacities, while ZnCl2-modified clay had the least rate of adsorption with a surface area of 44.3 mm2 and porosity of 43.4 %. This review also explores the grey areas of the adsorption properties of the raw clays and the improved performance of activated/modified clay materials with particular reference to the effects of pH, temperature, initial dye concentration and adsorbent dosage on the adsorption capacities of the clays. Various challenges encountered in using clay materials are highlighted and a number of future prospects for the adsorbents are proposed." @default.
- W1777998439 created "2016-06-24" @default.
- W1777998439 creator A5026435228 @default.
- W1777998439 creator A5040344771 @default.
- W1777998439 creator A5072988503 @default.
- W1777998439 date "2015-09-02" @default.
- W1777998439 modified "2023-10-17" @default.
- W1777998439 title "Adsorption of dyes using different types of clay: a review" @default.
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