海藻-氧化铁纳米颗粒复合材料去除污水中的铅

O. Khalifa, M. Soliman
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引用次数: 0

摘要

水圣器是近几十年来全球最关注的问题之一,可以通过废水再利用来解决。铅作为一种潜在的有毒元素,是受污染的水资源中最危险的潜在有毒元素之一。生物吸附剂,如海藻,最近被研究用于去除水中的有毒元素。假设海藻与纳米颗粒(如氧化铁)混合可能提高Pb离子的去除效率。本研究采用海藻、氧化铁纳米颗粒及其复合材料对50.0 mg L污染水中的铅进行去除。结果表明,所研究的吸附剂均能成功吸附铅,其中工程复合材料的去除效率为91%。此外,该复合材料在磁铁吸附过程中易于分离。Freundlich等温线模型最适合描述吸附材料对Pb的吸附。本研究是在去除污染物后改善生物吸附剂与水溶液分离的方法上迈出的一步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lead Removal from Contaminated Water Using Seaweed-Iron Oxide Nanoparticles Composite
Water sacristy is one of the most global concerns in the last decades, which can be solved by reusing wastewater. Lead, as a potentially toxic element, is one of the most dangerous potentially toxic elements that have to be eliminated from contaminated water resources. Bio-sorbents, like macroalgae (seaweeds) have been recently investigated for removing toxic elements from water. It is hypothesized that mixing seaweeds with nanoparticles (e.g. iron oxide) might improve removal efficiency of Pb ions. In this study seaweeds, iron oxide nanoparticles and their composite were used for lead removal from contaminated water with up to 50.0 mg L.. The results showed that all sorbents under investigation were successful for Pb sorption, and the engineered composite was superior with removal efficiency of 91%. In addition, the engineered composite showed an ease of separation following sorption process using a magnet. Freundlich isotherm model was the best for describing the adsorption of Pb onto the sorbents material under this investigation. This study is a step on the way to improve the separation of bio sorbents from aqueous solutions after the removal of contaminants.
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