零价铁去除水中(类)金属(含氧)离子技术发展的黄金十年(2011-2021)

应用零价铁(ZVI)去除水中(类)金属(含氧)离子是近年来研究的热点。在ZVI除污染过程中,同步提升ZVI除污的反应活性与电子效率对该技术进一步推广应用至关重要。本文综述了近十年(2011-2021年)ZVI的提升技术,主要涉及硫化、外加弱磁场、投加Fe²⁺、投加氧化剂以及其他新型技术。从不同体系广谱研究以及单一体系具体研究的角度,系统分析了这些技术对ZVI去除含氧水体中(类)金属(含氧)离子的反应活性、去除容量、电子效率的提升表现及作用机制。最后,对ZVI技术未来的研究方向作出了展望,以期促进ZVI技术的进一步完善与发展。本文有望为增强零价铁去除污染物的实际效能提供新的探索方向并完备相关理论基础。     

NEW LABELLING SCHEME OF ROTATION-VIBRATION STATES IN A LINEAR POLYATOMIC MOLECULE-LIE ALGEBRAIC POINT OF VIEW

THE results of a study on Clebsh-Gordan coefficients of polarharmonics have been reported.A labelling scheme has beenproposed.Under the new scheme,some rotation-vibration stateof a molecule will be labelled with half-integers.This doesnot mean they have double values.By using the concept ofspace-time symmetry and the dynamical symmetry of a doublydegenerate vibration-SU(2),the rotation and vibration inmolecular spectroscopy can be treated as one thing.Bothare realization of Lie group,and can be greatly simplifiedby use of Racah-Wigner algebra,as is done in atomic,nu-clear and molecular electronic spectroscopies.