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The effects of picolinic acid and pH on the adsorption of Cu(II) by activated carbon fibers

机译:吡啶甲酸和pH值对活性炭纤维吸附Cu(II)的影响

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摘要

The adsorption characteristics of Cu(II) on acativated carbon fibers (ACFs) from simulated wastewater was investigated in the picolinic acid concentration range from 0.15 to 15 mM by varying pH from 2 to 8. When pH is below 4, the removal fraction of Cu(II) ions decreased with the decrease of pH. The removal fraction of Cu(II) ions is almost constant above pH 4. The removal efficiency of Cu(II) ions increased as the molar ratio of picolinic acid to Cu(II), specific surface area of ACFs and pH of the solution increased. In the case of [Pic]/[Cu(II)/ = 10, complete adsorption of Cu(II) was performed on ACF, even at pH 2.
机译:通过在2至8的pH值范围内,从吡啶甲酸的浓度范围为0.15至15 mM,研究了模拟废水中Cu(II)在活性炭纤维(ACF)上的吸附特性。当pH值低于4时,Cu的去除率(II)离子随着pH的降低而降低。在pH高于4时,Cu(II)离子的去除率几乎恒定。随着吡啶甲酸与Cu(II)的摩尔比,ACF的比表面积和溶液pH值的增加,Cu(II)离子的去除效率提高。 。在[Pic] / [Cu(II)/ = 10的情况下,即使在pH 2时,在ACF上也可以完全吸附Cu(II)。

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