A critical review on challenges and trend of ultrapure water production process

Zhang, Xinbo; Yang, Yong; Ngo, Huu Hao; Guo, Wenshan; Wen, Huabing; Wang, Xiao; Long, Tianwei

doi:10.1016/j.scitotenv.2021.147254

Cited by 54 publications

(23 citation statements)

References 95 publications

(122 reference statements)

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“…Currently, even higher water qualities are being requested [147], which means that, among others, NF membranes can be introduced to substitute the final UF polishing step. Here especially the recent development on HF NF membranes is relevant, to enable clean permeate control just as in the UF membranes.…”

Section: Ultrapure Water Productionmentioning

confidence: 99%

“…Additionally, NF membranes can be applied when reclaimed water is used as the primary source in the ultrapure water process. The higher organic load of reclaimed water puts a strain on the current treatment schemes [147], but this can be relieved by NF processes. Currently, little attention is given to the application of NF in the ultrapure water processes, but this is expected to change in the future.…”

Section: Ultrapure Water Productionmentioning

confidence: 99%

“…In the following sections, we shift the focus towards the use of HF NF membranes in different industries for the recovery and reuse of valuable components or solutes. Currently, even higher water qualities are being requested [147], which means that, among others, NF membranes can be introduced to substitute the final UF polishing step.…”

Section: Food and Beverage Industrymentioning

confidence: 99%

See 2 more Smart Citations

Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review

Sewerin¹,

Elshof²,

Matencio

et al. 2021

Membranes

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Hollow fiber nanofiltration (NF) membranes have gained increased attention in recent years, partly driven by the availability of alternatives to polyamide-based dense separation layers. Moreover, the global market for NF has been growing steadily in recent years and is expected to grow even faster. Compared to the traditional spiral-wound configuration, the hollow fiber geometry provides advantages such as low fouling tendencies and effective hydraulic cleaning possibilities. The alternatives to polyamide layers are typically chemically more stable and thus allow operation and cleaning at more extreme conditions. Therefore, these new NF membranes are of interest for use in a variety of applications. In this review, we provide an overview of the applications and emerging opportunities for these membranes. Next to municipal wastewater and drinking water processes, we have put special focus on industrial applications where hollow fiber NF membranes are employed under more strenuous conditions or used to recover specific resources or solutes.

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Section: Ultrapure Water Productionmentioning

confidence: 99%

Section: Ultrapure Water Productionmentioning

confidence: 99%

Section: Food and Beverage Industrymentioning

confidence: 99%

See 1 more Smart Citation

Advances and Applications of Hollow Fiber Nanofiltration Membranes: A Review

Sewerin¹,

Elshof²,

Matencio

et al. 2021

Membranes

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“…Given that during the experiment the two droplets evaporated simultaneously on hierarchical SH surfaces from the same wafer and in the same environment, we exclude that this difference may result from extrinsic contamination coming from the surface of the device or its environment. This method of concentration constitutes a simple comparative technique of the water purity that could be interesting for the semiconductor and pharmaceutical industries . An analysis of bacteria contaminating ultrapure water has already been performed by using elaborate techniques of concentration .…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Superhydrophobic Device to Concentrate and Precisely Localize Water-Soluble Analytes: A Route to Environmental Analysis

et al. 2022

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An efficient superhydrophobic concentrator is developed using a hierarchical superhydrophobic surface on which the evaporation of a sessile droplet (6 μL) drives the nonvolatile elements it contains on a predefined micrometric analytical surface (pedestal of 80 μm diameter). This hierarchical silicon surface exhibits a surface texture made of etched nanopillars and consists of micropillars and guiding lines, arranged in radial symmetry around the central pedestal. The guiding lines ensure the overall convergence of the sessile droplet toward the central pedestal during evaporation. The nanopillar texturing induced a delay in the Cassie−Baxter to Wenzel regime transition, until the edge of the droplet reaches the periphery of the pedestal. Experiments performed with polymer microparticles suspended in ultrapure water or with DNA molecules solubilized in ultrapure water at sub-fM concentrations demonstrated that the totality of the nonvolatile elements in the liquid microvolume is delivered on or close to the pedestal area, in a very reproducible manner. The very high concentration capacity of the device enabled the discrimination of the degree of purity of ultrapure water samples from different origins. The concentrator also turned out to be functional for raw water samples, opening possible applications to environmental analysis.

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“…The cationic and anionic resins applied in a water demineralization unit, are in the H + , resp. OHform to prevent the release of other ions in the water as consequence of the IEX process [8,29,37]. However, very few comparative studies between the conventional Cl -, as used in potable water treatment, and this OHform (or FB in the case of weak basic anion exchange (WBA) resins) have been published.…”

Section: Introductionmentioning

confidence: 99%