Study On Adsorption Of Cr(Vi) By Black Wattle Tannin Solidified By Collagen Fiber
Keywords
Keywords Collagen Fiber, Solidified Tannin, Adsorption, Cr(Vi)
Abstract
Abstract: The adsorption of cr(vi) by collagen fiber-solidified black wattle tannin was studied. Different temperatures, pH values and other conditions were used to conduct adsorption studies, and the adsorption kinetics and adsorption column kinetics of solidified black wattle tannin were further discussed. and its adsorption mechanism. The results show that the adsorption equilibrium of cr(vi) by this material conforms to the Freundlich equation, and the effect of temperature on the adsorption equilibrium is not obvious; the adsorption kinetics can be described by a pseudo-second-order velocity equation, and the material also has good column stability. Kinetic characteristics; there may be three reactions in the adsorption process of cr(vi), namely an oxidation-reduction reaction between cr(vi) and the adsorbent to generate cr(iii), and an ion exchange reaction between cr(iii) and -cooh. , and cr(iii) is chelated with the ortho-hydroxyl group of tannin. Figure 8, Table 2, Reference 10
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Original research was done by Li Na, Yuan Shibin, Li Xudong
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