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首页> 外文期刊>American Journal of Analytical Chemistry >Cost Effective Adsorption of Aluminium and Iron from Synthetic and Real Wastewater by Rice Hull Activated Carbon (RHAC)
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Cost Effective Adsorption of Aluminium and Iron from Synthetic and Real Wastewater by Rice Hull Activated Carbon (RHAC)

机译：稻壳活性炭（RHAC）具有成本效益的吸附合成废水和实际废水中的铝和铁

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摘要

The adsorption of aluminium(III) and iron(III) ions from their single and binary systems, by RHAC was investigated in a batch system. The activated carbon prepared from rice hulls was characterized by scanning electron microscopy and Fourier transformation infrared techniques. Batch adsorption experiments were performed under different operating conditions including pH (2 - 5), adsorbent dosage (0.5 - 2.0 g/l), initial ion concentration (5 - 100 mg/l), and contact time (30 - 240 min). The equilibrium time for maximum ions removal was found to be 180 min in single and binary ions systems. The kinetics of adsorption was evaluated using the pseudo-first order, pseudo-second order and Elovich kinetic models. The Langmuir, Freundlich and Temkin equilibrium models were applied to the adsorption experimental data. Real wastewater samples were collected from different locations to investigate the efficiency of rice hull activated carbon in treating real samples. The real wastewater samples were treated with the activated carbon prepared from rice hulls and a commercial activated carbon. The results showed that the activated carbon prepared in the present work was more efficient in the removal of aluminium and iron from real wastewater as compared to the commercial activated carbon which is more advantageous considering both economics and environmental parameters.
机译：在间歇系统中研究了RHAC从单和二元系统吸附铝（III）和铁（III）离子的过程。由稻壳制备的活性炭通过扫描电子显微镜和傅里叶变换红外技术进行了表征。分批吸附实验是在不同的操作条件下进行的，包括pH（2-5），吸附剂量（0.5-2.0 g / l），初始离子浓度（5-100 mg / l）和接触时间（30-240分钟）。在单离子和二元离子系统中，最大离子去除的平衡时间为180分钟。使用拟一级动力学模型，拟二级动力学模型和Elovich动力学模型评估吸附动力学。将Langmuir，Freundlich和Temkin平衡模型应用于吸附实验数据。从不同位置收集了真实的废水样品，以研究稻壳活性炭处理真实样品的效率。实际废水样品用稻壳制得的活性炭和市售活性炭处理。结果表明，与商业活性炭相比，本工作中制备的活性炭与实际的活性炭相比在去除实际废水中的铝和铁方面更有效，这在经济和环境参数方面均更为有利。

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