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首页> 外文期刊>Journal of ecotoxicology & environmental monitoring >REMOVAL OF CADMIUM BY MODIFIED BAGASSE DUST AND FLY ASH
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REMOVAL OF CADMIUM BY MODIFIED BAGASSE DUST AND FLY ASH

机译：用改性的粉尘和粉煤灰去除镉

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摘要

Bagasse dust (BD) and bagasse fiyash (BF) were modified with physico chemical treatments to obtain pseudo activated carbon (PAC), modified bagasse dust (MBD) and modified flyash (MBF). BD, BF, MBD, MBF and PAC were analysed for their physicochemical characteristics by standard methods. Batch tests were conducted to investigate cadmium uptake under different steady state and transient rate conditions. The sorption data followed first order kinetics, and Langmuir and Freundlich isotherms. The sorbents MBF, PAC, BF, MBD and BD could remove 93,92,89,74 and 58 % Cd(II) at initial metal concentration of 0.1 mg/l, pH 6.0, temperature 25℃, agitation time 5 h, sorbent dose 5 g/1 and rpm 150. The order of cadmium removal capacities for these chemical adsorbents was: MBF > PAC > BF > MBD > BD. The removal percentage in the batch is expected to be about 20 % less in the column.
机译：甘蔗渣粉（BD）和蔗渣粉（BF）经过理化处理进行了改性，从而获得了假活性炭（PAC），改性蔗渣粉（MBD）和改性粉煤灰（MBF）。用标准方法分析了BD，BF，MBD，MBF和PAC的理化特性。进行批次测试以研究在不同的稳态和瞬态速率条件下镉的吸收。吸附数据遵循一级动力学，以及Langmuir和Freundlich等温线。 MBF，PAC，BF，MBD和BD吸附剂在初始金属浓度0.1 mg / l，pH 6.0，温度25℃，搅拌时间5 h，吸附剂吸附下可去除93,92,89,74和58％的Cd（II）。剂量为5 g / 1和rpm150。这些化学吸附剂的除镉能力顺序为：MBF> PAC> BF> MBD> BD。在该塔中，该批料中的去除百分比预计将减少约20％。

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