Author
Namguk Her
Other affiliations: University of Colorado Boulder, Swiss Federal Institute of Aquatic Science and Technology
Bio: Namguk Her is an academic researcher from Army and Navy Academy. The author has contributed to research in topics: Adsorption & Membrane. The author has an hindex of 36, co-authored 92 publications receiving 4939 citations. Previous affiliations of Namguk Her include University of Colorado Boulder & Swiss Federal Institute of Aquatic Science and Technology.
Topics: Adsorption, Membrane, Membrane fouling, Perchlorate, Humic acid
Papers published on a yearly basis
Papers
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TL;DR: An enhanced HPSEC technique with multiple on-line detectors enables a better understanding of quantitative and qualitative DOM properties and can help to design and optimize water/wastewater treatment facilities.
494 citations
TL;DR: The results obtained in this study can be applied to optimize the adsorption capacities of micropollutants using activated carbon in water treatment process.
353 citations
TL;DR: A comprehensive review of recent studies on energy and environmental applications of MXene and MXene-based nanomaterials, including energy conversion and storage, adsorption, membrane, photocatalysis, and antimicrobial, can be found in this paper.
Abstract: Energy and environmental issues presently attract a great deal of scientific attention. Recently, two-dimensional MXenes and MXene-based nanomaterials have attracted increasing interest because of their unique properties (e.g., remarkable safety, a very large interlayer spacing, environmental flexibility, a large surface area, and thermal conductivity). In 2011, multilayered MXenes (Ti3C2Tx, a new family of two-dimensional (2D) materials) produced by etching an A layer from a MAX phase of Ti3AlC2, were first described by researchers at Drexel University. The term “MXene” was coined to distinguish this new family of 2D materials from graphene, and applies to both the original MAX phases and MXenes fabricated from them. We present a comprehensive review of recent studies on energy and environmental applications of MXene and MXene-based nanomaterials, including energy conversion and storage, adsorption, membrane, photocatalysis, and antimicrobial. Future research needs are discussed briefly with current challenges that must be overcome before we completely understand the extraordinary properties of MXene and MXene-based nanomaterials.
343 citations
TL;DR: Fux decline and organic matter rejection as a function of delivered DOC (cumulative mass of feed DOC per unit area) showed significantly different results depending on the organic matter composition of samples even though the test conditions were the same.
322 citations
TL;DR: N- biochar had a highest adsorption capacity of all chemicals, suggesting that N-biochar derived from loblolly pine chip is a promising sorbent for agricultural and environmental applications.
298 citations
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TL;DR: Size-exclusion chromatography in combination with organic carbon detection (SEC-OCD) is an established method to separate the pool of NOM into major fractions of different sizes and chemical functions and to quantify these on the basis of organic carbon.
1,161 citations
TL;DR: Findings confirm that membrane and carbon processes are capable of greatly reducing the concentrations of emerging contaminants; however, several compounds are detectable in membrane permeate and carbon effluent.
1,035 citations
TL;DR: The classes, functions and the representatives of the frequently detected PPCPs in aquatic environments were summarized and suggestions are made for future study of P PCPs.
997 citations
TL;DR: Findings of a comprehensive literature review are reported, targeting membrane rejection mechanisms and factors affecting rejection, and a rejection diagram was proposed, which qualitatively allows prediction of solute rejection if certain solute and membrane properties are known.
942 citations
TL;DR: A review of the use of fluorescence spectroscopic techniques to measure the intrinsic fluorescence of organic matter and the application of fluorescent DOM analysis in marine waters, freshwaters and wastewaters can be found in this paper.
Abstract: Dissolved organic matter (DOM) in aquatic systems originates from a range of sources. Some is allochthonous, transported from the surrounding landscape to the water body, and is derived from and influenced by the geology, land use and hydrology of its origin. Some is created in situ through microbial activity, which may provide an independent source of organic matter, or a recycling mechanism for that which has been transported into the water body. The relative contribution of each source depends upon the location and environmental conditions within and without the water body. Human activity is also a source of DOM, much of which is believed to be labile, which can enter the aquatic system through direct point discharges, diffuse leaching and aerial dispersal. Fluorescence spectroscopy can provide an excellent tool to source DOM fractions, and to monitor and understand DOM transformations in aquatic systems, as much DOM has an intrinsic fluorescence. In particular, recent advances in optical technology, enabling rapid investigation of shorter wavelengths, have enabled more detailed characterization of organic material and its reactions in water. In this article, we review the use of fluorescence spectroscopic techniques to measure the intrinsic fluorescence of organic matter and the application of fluorescent DOM analysis in marine waters, freshwaters and wastewaters. Copyright © 2007 John Wiley & Sons, Ltd.
916 citations