NOM Removal by Adsorption

Sillanpää, Mika; Bhatnagar, Amit

doi:10.1016/b978-0-12-801503-2.00007-0

Cited by 5 publications

(2 citation statements)

References 95 publications

(92 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high surface area (usually around 750-800 m 2 /g) [27] of silica gel allows it to absorb water readily, making it useful as a desiccant. Silica gel is non-toxic, non-flammable, and chemically inert and is often used as a drying agent in many products where contact with water would cause damage or spoilage, such as many foodstuffs, medicines, and types of electrical equipment [28]. The water that is so readily absorbed by silica gel can usually be expelled from the silica gel by heating it up to ca.…”

Section: The Acidified Water-releasing Pressed Discmentioning

confidence: 99%

Novel Colour-Based, Prototype Indicator for Use in High-Pressure Processing (HPP)

2021

View full text Add to dashboard Cite

The preparation and testing of a colour-based prototype indicator for high-pressure processing (HPP) are described. The indicator is a layered structure comprising a pressed disc of a mixture of silica gel, which has been previously loaded with a set wt% of acidified water, and polytetrafluoroethylene, PTFE, powders, a water-permeable barrier layer, and a Congo-Red-based pH indicator layer, all vacuum-sealed in a water impermeable plastic film. The value of the wt% is calculated from the ratio of the mass of acidified water added to the mass of originally dry silica gel. The high pressures associated with HPP drive the release of the acidified water from the silica gel and its subsequent transport through the water-permeable barrier layer to the pH indicator, thereby producing a striking red-to-blue colour change. The response of the HPP indicator can be tuned to different HPP conditions by varying the wt% of acidified water used to load the silica gel powder. Indicators, with 61, 63, and 65 wt% acidified water loaded silica gel, are prepared and found to require, respectively, the application of at least, 600, 400, and 300 MPa pressure for 3 min to effect a change colour. To our knowledge, this is the first reported example of a prototype HPP indicator that can be tuned to respond to the very different pressure and time conditions used in HPP to sterilise such very different products as milk, apple and orange juice, and aloe vera gel.

show abstract

Section: The Acidified Water-releasing Pressed Discmentioning

confidence: 99%

Novel Colour-Based, Prototype Indicator for Use in High-Pressure Processing (HPP)

2021

View full text Add to dashboard Cite

show abstract

“…Natural organic matter (NOM) and arsenic present a major problem when found in drinking water. There have been many published scientific papers on the methods for their removal over the years [1][2][3][4][5][6][7][8][9]. Groundwater investigated in this chapter is one of the most arsenic and NOM contaminated water in Europe [10], and nevertheless population which inhabits these areas are using this groundwater as a drinking water without any treatment process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Extremely High Specific Flow Rates on the Ion- Exchange Resin Sorption Characteristics

Kukučka¹,

Kukučka²

2015

Ion Exchange - Studies and Applications

View full text Add to dashboard Cite

Abstract"ehavior of the strongly basic, macroporous ion-exchange resin "mberlite IR" -Cl is circumstantially explained in the book chapter. Effects of different specific flow rate SFR and determination of its optimum value, as well as effects of the empty-bed contact time E"CT values on the removal of NOM, arsenic, sulfate, electrical conductivity, bicarbonate and chlorine from groundwater using strongly basic ion exchange resin S"IX is examined in this chapter. Determination of the resin's sorption characteristics is also part of the investigation. " new approach of pseudo equilibrium adsorption capacity is presented. Investigations of determination of optimum value of water flow rate and resin's sorption characteristics were conducted with native groundwater and native groundwater with addition of oxidizing agent.Sodium hypochorite was added to the raw water with the aim of oxidizing NOM and "s III to "s V . The intention was to find out whether the resin might be used beyond the range of operating conditions recommended by the manufacturer. Results will provide a better understanding of treatment of groundwater with similar physicochemical composition which is important when designing a water treatment plants for settlements in areas with such groundwater. "lso, prolonging the resin working cycle can ultimately lead to water treatment plants cost reduction. Namely, when the results for the optimum SFR are obtained for a pilot plant system for concrete groundwater of distinct physico-chemical characteristics, it is simple to design a unique ion-exchange water treatment system of any capacity. The obtained results make a sound basis for designing an appropriate plant for the removal of NOM from groundwater of the region of the town of Zrenjanin. The tested resin can also be used in the process of pretreatment of the same water, since it allows the removal of about % of the naturally occurring arsenic.© 2015 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Keywords: Specific flow rate, resinsorption characteristics, arsenic, natural organic matter . IntroductionNatural organic matter NOM and arsenic present a major problem when found in drinking water. There have been many published scientific papers on the methods for their removal over the years [ -]. Groundwater investigated in this chapter is one of the most arsenic and NOM contaminated water in Europe [ ], and nevertheless population which inhabits these areas are using this groundwater as a drinking water without any treatment process."ehavior of the strongly basic, macroporous ion-exchange resin "mberlite IR" -Cl [ ] will be circumstantially explained in the book chapter. Effects of different specific flow rate SFR and determination of its optimum value as well as the effects of the empty-bed contact time E"CT values on...

show abstract

Sustainable Removal of Antibiotic Drugs from Wastewater Using Different Adsorbents—a Concise Review

Das

Sengupta

2023

Water Conserv Sci Eng

View full text Add to dashboard Cite

NOM Removal by Adsorption

Cited by 5 publications

References 95 publications

Novel Colour-Based, Prototype Indicator for Use in High-Pressure Processing (HPP)

Novel Colour-Based, Prototype Indicator for Use in High-Pressure Processing (HPP)

Effect of Extremely High Specific Flow Rates on the Ion- Exchange Resin Sorption Characteristics

Sustainable Removal of Antibiotic Drugs from Wastewater Using Different Adsorbents—a Concise Review

Contact Info

Product

Resources

About