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首页> 外文会议>International Symposium on Current Progress in Mathematics and Sciences >Study of equilibrium, kinetic and thermodynamic for removal of Pb(II) in aqueous solution using Sago bark (Metroxylon sago)
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Study of equilibrium, kinetic and thermodynamic for removal of Pb(II) in aqueous solution using Sago bark (Metroxylon sago)

机译：使用Sago Bark（Metroxylon Sago）在水溶液中除去Pb（II）的平衡，动力学和热力学研究

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摘要

This research investigated the ability of Sago Bark (Metroxylon sago) to remove Pb(II) in aqueous solution using the batch method. The adsorption of Pb(II) with Sago Bark (Metroxylon Sago) reached the peak at pH 5, contact time 60 minutes, initial concentration 600 mg/L, agitation rate 100 rpm, adsorbent dose 0.1 g and adsorption capacity 31.4375 mg/g. The equilibrium of adsorption revealed that Langmuir isotherm model was fitted better to describe the adsorption of Pb(II) onto Sago Bark (Metroxylon sago) indicated by R~2 values at 0.8908 and 0.918 for Freundlich and Langmuir, respectively. Pseudo-second order yielded a good correlation (R~2 = 0.9979) of the experimental data. While the thermodynamic study showed a spontaneous with an endothermic process. SEM micrograph and FTIR spectrum indicated that porous surface covered by Pb(II) and the wavelength number shifting of hydroxyl and carbonyl groups from 3421.10 cm~(-1) to 3423.54 cm~(-1) and from 1734.16 cm~(-1) to 1718.65 cm~(-1) supported the adsorption of Pb(II) onto Sago Bark (Metroxylon sago).
机译：本研究调查了Sago Bark（Metroxylon Sago）使用分批方法去除水溶液中Pb（II）的能力。用Sago Bark（Metroxylon Sago）的Pb（II）的吸附达到pH5的峰，接触时间60分钟，初始浓度600mg / L，搅拌速率100rpm，吸附剂剂量0.1g和吸附容量31.4375mg / g。吸附的平衡显示，Langmuir等温模型拟合描述Pb（ii）的吸附分别为Freundlich和Langmuir的0.8908和0.918所示的R〜2值表明的Sago Bark（Metroxylon Sago）。伪二次订单产生了实验数据的良好相关性（R〜2 = 0.9979）。虽然热力学研究显示出具有吸热过程的自发性。 SEM显微照片和FTIR光谱表明，由PB（II）覆盖的多孔表面和羟基和羰基的波长数移位为3421.10cm〜（-1）至3423.54cm〜（-1）和1734.16cm〜（-1）到1718.65cm〜（-1）支持在Sago Bark（Metroxylon Sago）上的PB（II）的吸附。

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