Yujing Zhang , Xiaoqin Nie , Faqin Dong , Ning Pan , Congcong Ding , Chang Liu , Junling Wang , Wencai Cheng , Mingxue Liu , Huichao He , Shiyong Sun , Xue Xia
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引用次数: 6
Abstract
It is of great significance to develop an adsorbent with high adsorption capacity and excellent resistance to anion and cation interference toward the removal of U(VI). Herein, a novel polyamine-modified polyacrylonitrile-based fiber (PANPA) has been synthesized through hydrothermal method, which can validly remove U(VI) from solution. Combined with mesoscopic, spectral characterization and simulation method, the removal behavior and mechanism of U(VI) from high fluorine uranium-containing wastewater by PANPA are systematically investigated. The results show that, based on the strong coordination principle of polyamine group and UO22+, PANPA can selectively remove U(VI) from wastewater. In addition, the qmax of 459.27 mg g−1 was more than that of many other adsorbent materials. More importantly, PANPA is not affected by high concentration of F−, and exhibits higher distribution coefficient (559,900 mL g−1) and removal efficiency (99.5%) to U(VI) than other coexisting ions in real wastewater. Furthermore, the column experiment was also implemented to remove U(VI). The results indicate that PANPA is a promising material to effectively remove U(VI) from real wastewater produced during the fabrication of nuclear fuel elements.
开发一种具有高吸附容量和优异的抗阴离子和阳离子干扰能力的吸附剂对U(VI)的去除具有重要意义。本文采用水热法合成了一种新型聚胺改性聚丙烯腈基纤维(PANPA)，该纤维能有效去除溶液中的U(VI)。结合介观、光谱表征和模拟等方法，系统研究了PANPA对高氟含铀废水中U(VI)的去除行为和机理。结果表明，基于多胺基团与UO22+的强配位原理，PANPA可选择性去除废水中的U(VI)。qmax为459.27 mg g−1，高于其他吸附材料。更重要的是，PANPA不受高浓度F−的影响，其分布系数(559,900 mL g−1)和对U(VI)的去除效率(99.5%)高于实际废水中其他共存离子。此外，还进行了去除U(VI)的柱实验。结果表明，PANPA是一种很有前途的材料，可以有效去除核燃料元件制造过程中产生的实际废水中的U(VI)。
期刊介绍：
The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies
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