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米糠生物质解毒含铬(Ⅵ)水溶液的研究

Keywords: 米糠,生物质,吸附,解毒

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Abstract:

农林生物质是一种成本低、环境友好的重金属废水处理材料,也是受重金属污染环境的修复材料之一。实验讨论了初始pH值、米糠用量、吸附时间对含铬(Ⅵ)水溶液解毒的影响。结果表明,米糠对Cr(Ⅵ)存在吸附作用,同时也有解毒还原能力。100mL浓度为100mg/L的含铬溶液,在初始pH为2、米糠用量为3g、吸附-反应平衡时间7h的条件下,生物质吸附去除溶液中的铬为14.4%,而原溶液中Cr(Ⅵ)解毒了57.2%,米糠生物质吸附总铬的能力为0.48mgCr/g(生物质)。米糠生物质有潜在的吸附铬和修复受铬污染环境的利用价值。

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