Abstract:Effects of temperature on characteristics of boron adsorption-desorption by Ca-montmorillonite, goethite and manganite were studied.The results showed that boron adsorption by Ca-montmorillonite increased with increasing temperature, whereas boron adsorption by goethite and manganite decreased as temperature rose.Boron adsorption-desorption by Ca-montmorillonite was less hysteretic as compared to goethite and manganite in terms of boron desorption rates at different temperatures.At constant temperature, boron adsorption heat for Ca-montmorillonite, goethite and manganite were 63.08, -122.45 and -93.91 kJmol-1, respective desorption heat were -31.02, 53.95 and 46.30 kJmol-1.The process of boron adsorption by Ca-montmorillonite was endothermic.By contrast, the process for goethite and manganite were exothermic.As temperature rose, boron reacted faster with minerals initially.However, the reaction rate as a whole slightly decreased.