Removal of organic matter from wastewater reverse osmosis concentrate using granular activated carbon and anion exchange resin adsorbent columns in sequence

Jamil, Shahzad; Loganathan, P.; Kandasamy, Jaya; Listowski, Andrzej; McDonald, James A.; Khan, Stuart J.; Vigneswaran, S.

doi:10.1016/j.chemosphere.2020.127549

Cited by 35 publications

(10 citation statements)

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“…Jamil et al [ 3 , 14 ] reported that the removal of DOC with GAC adsorption was larger compared to strong base anion exchange resins (Purolite ® A502PS, Purolite ® A860S). However, the anion exchange resins (AER) were found to remove more hydrophilic fractions selectively from DOC [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of Organics with Ion-Exchange Resins (IEX) from Reverse Osmosis Concentrate

et al. 2023

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Reverse osmosis concentrate (ROC) produced as the by-product of the reverse osmosis process consists of a high load of organics (macro and micro) that potentially cause eco-toxicological effects in the environment. Previous studies focused on the removal of such compounds using oxidation, adsorption, and membrane-based treatments. However, these methods were not always efficient and formed toxic by-products. The impact of ion-exchange resin (IEX) (Purolite®A502PS) was studied in a micro-filtration–IEX hybrid system to remove organics from ROC for varying doses of Purolite® A502PS (5–20 g/L) at a flux of 36 L/m2h. The purolite particles in the membrane reactor reduced membrane fouling, evidenced by the reduction of transmembrane pressure (TMP), by pre-adsorbing the organics, and by mechanically scouring the membrane. The dissolved organic carbon was reduced by 45–60%, out of which 48–81% of the hydrophilics were removed followed by the hydrophobics and low molecular weight compounds (LMWs). This was based on fluorescence excitation-emission matrix and liquid chromatography-organic carbon detection. Negatively charged and hydrophobic organic compounds were preferentially removed by resin. Long-term experiments with different daily replacements of resin are suggested to minimize the resin requirements and energy consumption.

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Section: Introductionmentioning

confidence: 99%

Removal of Organics with Ion-Exchange Resins (IEX) from Reverse Osmosis Concentrate

et al. 2023

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“…GAC only achieved partial removal. A larger NOM removal resulted by combining the two adsorbents sequentially (GAC followed by Purolite) to take advantage of their different adsorbent affinities towards the range of NOM fractions present (Jamil et al 2020 ).…”

Section: Activated Carbon (Ac) and Ion Exchange Resin Adsorbentsmentioning

confidence: 99%

Submerged membrane/adsorption hybrid process in water reclamation and concentrate management—a mini review

Loganathan

Kandasamy

Ratnaweera

et al. 2022

Environ Sci Pollut Res

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Clean water shortage is a major global problem due to escalating demand resulting from increasing human population growth and industrial activities, decreasing freshwater resources and persistent droughts. Recycling and reuse of wastewater by adopting efficient reclamation techniques can help solve this problem. However, wastewater contains a wide range of pollutants, which require removal before it may be reused. Adsorption and membrane processes are two successful treatments used to remove most of these pollutants. Their efficiency increases when these processes are integrated as observed, for example in a submerged membrane adsorption hybrid system (SMAHS). It uses coarse air bubbling/sparging to produce local shear which minimises reversible membrane fouling, improves performance and extends the life of the membrane. Additionally, the adsorbent acts as a buoyant media that produces an extra shearing effect on the membrane surface, reduces membrane resistance and increases flux. In addition, it adsorbs the organics that would otherwise deposit on and cause fouling of the membrane. The use of activated carbon (AC) adsorbent in SMAHS is very effective in removing most pollutants including natural organic matter (NOM) and organic micropollutants (OMPs) from wastewaters and membrane concentrate wastes, the latter being a serious problem in practical applications of the reverse osmosis process. However, certain NOM fractions and OMPs (i.e. hydrophilic and negatively charged ones) are not efficiently removed by AC. Other adsorbents need to be explored for their effective removal. Graphical abstract

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“…A study investigating NF brine treatment by other oxidational by oxidation. In a municipal application, RO brine treatment with GAC of a wastewater reclamation plant receiving biologically treated wastewater and stormwater was investigated by Jamil et al (2020) and nearly complete removal efficiencies (95-100%) for 17 micropollutants were achieved within 2,880 BVT treated.…”

Section: Micropollutant and Pathogen Removal By Hybrid Systems With N...mentioning

confidence: 99%

Hospital wastewater treatment and the role of membrane filtration – removal of micropollutants and pathogens: A review

Klatt

Beyer

Einfeldt

2022

Water Science and Technology

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Dissemination of multiresistant bacteria and high concentrations of micropollutants by hospitals and other medical facilities can be significantly reduced by a wide variety of on-site treatment approaches. Membrane filtration technologies, ranging from microfiltration to reverse osmosis, have been adapted in many studies and offer multiple purposes in advanced wastewater treatment configurations. While the direct rejection of pharmaceutical compounds and pathogens can only be achieved with nanofiltration and reverse osmosis processes, porous membranes are known for their pathogen removal capabilities and can be used in combination with other advanced treatment approaches, such as oxidation and adsorption processes. This review was conducted to systematically assess studies with membrane filtration technologies that are used as either stand-alone or hybrid systems for the treatment of hospital wastewater. In this review, four different databases were screened with a pre-set of search strings to thoroughly investigate the application of membrane filtration technology in hospital wastewater treatment. Hybrid systems that combine multiple treatment technologies seem to be the most promising way of consistently removing micropollutants and pathogens from hospital wastewater, but additional economic assessments are needed for an extensive evaluation.

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Removal of organic matter from wastewater reverse osmosis concentrate using granular activated carbon and anion exchange resin adsorbent columns in sequence

Cited by 35 publications

References 50 publications

Removal of Organics with Ion-Exchange Resins (IEX) from Reverse Osmosis Concentrate

Removal of Organics with Ion-Exchange Resins (IEX) from Reverse Osmosis Concentrate

Submerged membrane/adsorption hybrid process in water reclamation and concentrate management—a mini review

Hospital wastewater treatment and the role of membrane filtration – removal of micropollutants and pathogens: A review

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