Sorption of humic substances on a weakly basic anion-exchange resin: Relationship with the adsorbate structure

Pankratov, D. А.; Anuchina, M. M.; Borisova, E. M.; Volikov, Alexander B.; Konstantinov, Andrey I.; Perminova, Irina V.

doi:10.1134/s0036024417060176

Cited by 7 publications

(4 citation statements)

References 16 publications

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“…Nevertheless, despite the large number of studies on TOC removal by IEX described in the literature, there are still many gaps in knowledge that require the necessary attention. For example, most IEX research on TOC removal is performed on the removal of organic compounds by weak or strong anion exchange resins alone, without considering the full IEX demineralization unit consisting of a weak and strong cation exchange column (WAC and SAC), followed by a CO 2 degasser and a weak and strong anion exchange column (WBA and SBA). − In addition, most studies investigate the removal of model components as a simulation of organic matter . This kind of research is fundamental for the basic knowledge on IEX mechanisms but is a simplification of the complex wastewater composition in reality.…”

Section: Introductionmentioning

confidence: 99%

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Organic Matter Composition More Important than Concentration in Ion Exchange Demineralization of Different Water Qualities for the Production of Steam

Meyer

Peeters

Vanoppen

et al. 2018

Ind. Eng. Chem. Res.

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Fresh water becomes a limited resource in the industry. In order to help chemical industries use other water sources and close their water cycle for the production of steam, a well-founded insight on the challenges and possibilities of switching from one specific water quality to another is needed. A case study for Monsanto Europe N.V. was carried out, but the main findings hold for many more applications, as many industries struggle with water scarcity and feel the need to reuse wastewater. Besides demineralization by ion exchange (IEX), the total organic carbon (TOC) concentration, composition, and the formation of organic acids under boiler conditions were investigated for two different water qualities (Antwerp tap water and wastewater after reverse osmosis (RO) treatment). The comparison included the effect of TOC composition on its removal by IEX and the potential corrosiveness of TOC compounds. Despite tap water showing a more efficient and higher TOC removal compared to RO permeate (93% and 57%, respectively), tap water led to more organic acid formation under boiler conditions. Including the composition of the organic matter in TOC corrosiveness assessment may offer multiple advantages, not in the least economic benefits, when less treatment is required in order to meet the TOC limit value.

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Section: Introductionmentioning

confidence: 99%

“…21−24 In addition, most studies investigate the removal of model components as a simulation of organic matter. 25 This kind of research is fundamental for the basic knowledge on IEX mechanisms but is a simplification of the complex wastewater composition in reality.…”

Section: Introductionmentioning

confidence: 99%

Organic Matter Composition More Important than Concentration in Ion Exchange Demineralization of Different Water Qualities for the Production of Steam

Meyer

Peeters

Vanoppen

et al. 2018

Ind. Eng. Chem. Res.

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“…This is a clear knowledge gap, as resins could largely influence the resulting TOC concentration at the end of the demineralization. In addition, most studies investigate the removal of model components as a simulation of organic matter . Research using model components, although fundamental for the basic knowledge on IEX removal mechanisms for TOC, is often an oversimplification of the complex mechanisms arising when surface water TOC with a high variety in composition needs to be removed.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, most studies investigate the removal of model components as a simulation of organic matter. 20 Research using model components, although fundamental for the basic knowledge on IEX removal mechanisms for TOC, is often an oversimplification of the complex mechanisms arising when surface water TOC with a high variety in composition needs to be removed. Furthermore, IEX installations can use a scavenger resin to remove additional TOC.…”

Section: ■ Introductionmentioning

confidence: 99%

Organic Matter and Microbial Cell Density Behavior during Ion Exchange Demineralization of Surface Water for Boiler Feedwater

Meyer

Overstraeten

Heyse

et al. 2019

Ind. Eng. Chem. Res.

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Chemical industries around the world show an increasing awareness of their ecological footprint, including their water use. A shift toward alternative water sources, such as wastewater streams or surface water, is slowly becoming a well-known concept to reduce the intake of ground and drinking water. However, a change of intake water often leads to unforeseen challenges (for example, faster breakthrough of organic matter and growth of biofilms) and requires a review of the currently used water treatment technology. A study of surface water used in various Antwerp companies was carried out, but the acquired knowledge can tackle multiple unexpected problems in different applications, as many industries undergo an alteration in their water management due to the increasing water scarcity. Demineralization of Biesbosch surface water by ion exchange and the associated removal of both total organic carbon and microbial cells were investigated with liquid chromatography in combination with organic carbon detection characterization and flow cytometric monitoring. The effect of monochloramine and sodium bisulfite on the ion exchange operation and the respective removal efficiencies were investigated. Considering a total organic carbon limit value of 250 ppb, the addition of both chemicals together had a positive effect on the demineralization operating time. On average, >93% of the organic matter was removed from the incoming feedwater. The organic matter removal mechanism by the anion exchange resins was mostly (acidic) adsorption at low pH in the scavenger and by ion exchange at neutral pH in the weak and strong anion exchange resins. The microbial cell concentration was reduced by almost 2 log units, from 8.16 × 10 5 cells/mL in the feedwater to 8.58 × 10 3 cells/mL in the demineralized water, and was the result of cell lysis due to a large pH drop over the consecutive resin columns. In addition, the end water quality was suited to be used as boiler feedwater, as little to no formation of corrosive organic acids occurred under boiler conditions.

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Impact of humic acid on degradation of benzo(a)pyrene polluted Haplic Chernozem triggered by modified Fenton-like process

Mazarji

Minkina

Sushkova

et al. 2020

Environmental Research

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Sorption of humic substances on a weakly basic anion-exchange resin: Relationship with the adsorbate structure

Cited by 7 publications

References 16 publications

Organic Matter Composition More Important than Concentration in Ion Exchange Demineralization of Different Water Qualities for the Production of Steam

Organic Matter Composition More Important than Concentration in Ion Exchange Demineralization of Different Water Qualities for the Production of Steam

Organic Matter and Microbial Cell Density Behavior during Ion Exchange Demineralization of Surface Water for Boiler Feedwater

Impact of humic acid on degradation of benzo(a)pyrene polluted Haplic Chernozem triggered by modified Fenton-like process

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