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首页> 外文期刊>International Journal of Environmental Science and Technology >Characterization and efficacy of a new generation scavenger of heavy metal pollutant: a green method of remediation of wastewater
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Characterization and efficacy of a new generation scavenger of heavy metal pollutant: a green method of remediation of wastewater

机译：新一代重金属污染物清除剂的特性和功效：绿色修复废水的方法

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摘要

The presence of heavy metals in diverse forms in the environment (which is having a direct and continuous interface with the health of living beings) demands an efficient removal technique which would be cost effective, eco-friendly, easily operable and free of secondary waste. Hence, the useless and discarded leaves of Cissus rotundifolia have been valorized by utilizing it for the removal of heavy metal pollutant after its modification. The developed adsorbent is then characterized through X-ray diffraction study, scanning electron microscope analysis, Fourier transform infrared spectroscopy and application of mathematical models. The adsorption process was found to follow Langmuir isotherm model and pseudo-first-order kinetics. The intraparticle diffusion was found to be the rate limiting step. Besides being usable in batch method, this adsorbent is also applicable to fixed bed column technique, due to its faster kinetics, high hydrophilicity, and easy recovery with mild mineral acid (like 0.002 mol per liter of hydrochloric acid).
机译：环境中各种形式的重金属的存在（与生物的健康具有直接和连续的界面）需要一种有效的清除技术，该技术应具有成本效益，生态友好，易于操作且没有二次废物。因此，通过将其修饰后用于去除重金属污染物，已对轮叶菊花的无用和废弃的叶子进行了增值。然后通过X射线衍射研究，扫描电子显微镜分析，傅立叶变换红外光谱和数学模型的应用对开发的吸附剂进行表征。发现吸附过程遵循朗缪尔等温线模型和拟一级动力学。发现颗粒内扩散是速率限制步骤。这种吸附剂除了可以分批使用外，还因为其更快的动力学，较高的亲水性和易于回收的温和无机酸（如每升盐酸0.002 mol）而还适用于固定床柱技术。

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