摘要
本文用农业废弃物柚子皮制备了一种柚子皮活性炭(PC-AC),并成功将其作为吸附剂用于去除废水中的Mn(II)离子。研究考察了最佳的吸附条件,并拟合其相应的动力学和热力学模型。结果表明,影响吸附剂(PC-AC)对于Mn(II)的吸附能力的因素包括锰离子的初始浓度,吸附剂投入量,吸附温度和吸附时间;活性炭吸附锰离子的动力学模型为二级反应动力学模型,热力学模型满足Langmuir吸附模型。柚子皮活性碳能够在较为广泛的条件下吸附重金属锰离子,且对重金属废水无需进行预处理,能够有效解决能耗问题。
This paper uses agricultural waste grapefruit skin as raw material to prepare activated carbon (PC-AC), which was successfully used as an adsorbent for removal of Mn(II) ion in waste water. This work investigates the best adsorption conditions, and fits the corresponding kinetic and thermodynamic models. From the results, adsorption capacity of adsorbent (PC-AC) for Mn(II) depends on the initial concentration of manganese ion, the amount of adsorbent, the adsorption temperature, and the adsorption time. Activated carbon adsorption dynamics model accords with the second reaction kinetics model and the thermodynamic models follows Langmuir model. PC- AC as adsorption removes Mn(II) ion in waste water under relatively broad conditions, and the heavy metal wastewater needn’t pretreatment, which can effectively solves the problem of energy consumption.
出处
《水污染及处理》
2018年第1期87-94,共8页
Water Pollution and Treatment
