五角枫叶作为吸附剂用于吸附去除水中阳离子染料结晶紫(CV)。考察了吸附时间、五角枫叶投加量、pH、结晶紫初始浓度及温度等因素对五角枫叶吸附结晶紫性能的影响。采用Langmuir和Freundlich吸附模型描述平衡等温式,并计算相关参数。结果表明:五角枫叶吸附结晶紫最大吸附量qm为322.58mg/g(25℃);吸附热力学表明吸附过程为吸热反应,可自发进行;五角枫叶吸附结晶紫有较好的吸附效果,可作为一种廉价吸附剂用于废水中染料的去除。
Mono acer leaves was used as adsorbent to remove the cationic dye crystal violet (CV) from contaminated water.The effect of contact time,dosage of mono acer leaves,pH value of solution,initial crystal violet concentration and temperature on crystal violet adsorption onto mono acer leaves were studied,respectively.The Langmuir and Freundlich adsorption models were used to describe the equilibrium isotherm and isotherm constant calculation.It was found that the maximum equilibrium adsorption capacities were 322.58mg/g(298K)for crystal violet adsorption onto the mono acer leaves.Adsorption thermodynamics showed that the adsorption was endothermic and spontaneous.The work indicated that the mono acer leaves had better adsorption effect for crystal violet.Mono acer leaves could be employed as a low-cost alternative adsorbent for dye removal from effluents.
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