Removal of micropollutants by membrane bioreactor under temperature variation

Hai, Faisal I.; Tessmer, Karin; Nguyen, Dinh Duc; Kang, Jinguo; Price, William E.; Nghiem, Long D.

doi:10.1016/j.memsci.2011.08.047

Cited by 140 publications

(67 citation statements)

References 42 publications

(79 reference statements)

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“…Our results regarding the persistence of the above-mentioned six compounds are consistent with the results obtained from our own preliminary study (Nguyen et al, 2012) and other available studies (Clara et al, 2005;Joss et al, 2005;Urase et al, 2005;Nakada et al, 2006;Kimura et al, 2007;Cirja et al, 2008). Similarly, the presence of the strong electron-donating functional groups (such as hydroxyl and aliphatic) and/or absence of strong electron-withdrawing groups appear to be the reason of the high removal of the other hydrophilic compounds such as acetaminophen and salicylic acid , ibuprofen (Clara et al, 2005;Joss et al, 2005) and estriol (Urase et al, 2005;Hai et al, 2011) (Clara et al, 2005;Joss et al, 2005;Urase et al, 2005;Hai et al, 2011).…”

Section: Removal By Mbr Treatmentsupporting

confidence: 91%

Coupling granular activated carbon adsorption with membrane bioreactor treatment for trace organic contaminant removal: Breakthrough behaviour of persistent and hydrophilic compounds

Nguyen

Hai

Kang

et al. 2013

Journal of Environmental Management

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Nghiem, L. D. (2013). Coupling granular activated carbon adsorption with membrane bioreactor treatment for trace organic contaminant removal: Breakthrough behaviour of persistent and hydrophilic compounds. Journal of Environmental Management, 119 173-181.Coupling granular activated carbon adsorption with membrane bioreactor treatment for trace organic contaminant removal: Breakthrough behaviour of persistent and hydrophilic compounds AbstractThis study investigated the removal of trace organic contaminants by a combined membrane bioreactorgranular activated carbon (MBR-GAC) system over a period of 196 days. Of the 22 compounds investigated here, all six hydrophilic compounds with electron-withdrawing functional groups (i.e., metronidazole, carbamazepine, ketoprofen, naproxen, fenoprop and diclofenac) exhibited very low removal efficiency by MBR-only treatment. GAC post-treatment initially complemented MBR treatment very well; however, a compound-specific gradual deterioration of the removal of the above-mentioned problematic compounds was noted. While a 20% breakthrough of all four negatively charged compounds namely ketoprofen, naproxen, fenoprop and diclofenac occurred within 1000-3000 bed volumes (BV), the same level of breakthrough of the two neutral compounds metronidazole and carbamazepine did not occur until 11,000 BV. Single-solute isotherm parameters did not demonstrate any discernible correlation individually with any of the parameters that may govern adsorption onto GAC, such as log D, number of hydrogen-bond donor/acceptor groups, dipole moment or aromaticity ratio of the compounds. The isotherm data, however, could differentiate the breakthrough behaviour between negatively charged and neutral trace organic contaminants. © 2013 Elsevier Ltd. AbstractThis study investigated the removal of trace organic contaminants by a combined membrane bioreactor -granular activated carbon (MBR-GAC) system over a period of 196 days. Of the 22 compounds investigated here, all six hydrophilic compounds with electronwithdrawing functional groups (i.e., metronidazole, carbamazepine, ketoprofen, naproxen, fenoprop and diclofenac) exhibited very low removal efficiency by MBR-only treatment. GAC post-treatment initially complemented MBR treatment very well; however, a compoundspecific gradual deterioration of the removal of the above-mentioned problematic compounds was noted. While a 20% breakthrough of all four negatively charged compounds namely ketoprofen, naproxen, fenoprop and diclofenac occurred within 1,000 -3,000 bed volumes (BV), the same level of breakthrough of the two neutral compounds metronidazole and carbamazepine did not occur until 11,000 BV. Single-solute isotherm parameters did not demonstrate any discernible correlation individually with any of the parameters that may govern adsorption onto GAC, such as log D, number of hydrogen-bond donor/acceptor groups, dipole moment or aromaticity ratio of the compounds. The isotherm data, however, could differentiate the breakthrough behavior between negatively ...

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Section: Removal By Mbr Treatmentsupporting

confidence: 91%

Coupling granular activated carbon adsorption with membrane bioreactor treatment for trace organic contaminant removal: Breakthrough behaviour of persistent and hydrophilic compounds

Nguyen

Hai

Kang

et al. 2013

Journal of Environmental Management

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“…The influent and effluent TrOC concentrations were determined using an analytical method previously reported by Hai et al (2011). This method consisted of the solid phased extraction (SPE), derivation, and quantitative determination by a gas chromatography-mass spectrometry (GC-MS) system (QP5000, Shimadzu, Japan).…”

Section: Analysis Of Trace Organic Chemicalsmentioning

confidence: 99%

Effects of salinity build-up on biomass characteristics and trace organic chemical removal: Implications on the development of high retention membrane bioreactors

Luo

Hai

Kang

et al. 2015

Bioresource Technology

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Nghiem, L. D. (2015). Effects of salinity build-up on biomass characteristics and trace organic chemical removal: Implications on the development of high retention membrane bioreactors. Bioresource Technology, 177 274-281.Effects of salinity build-up on biomass characteristics and trace organic chemical removal: Implications on the development of high retention membrane bioreactors AbstractThis study investigated the impact of salinity build-up on the performance of membrane bioreactor (MBR), specifically in terms of the removal and fate of trace organic chemicals (TrOCs), nutrient removal, and biomass characteristics. Stepwise increase of the influent salinity, simulating salinity build-up in high retention MBRs, adversely affected the metabolic activity in the bioreactor, thereby reducing organic and nutrient removal. The removal of hydrophilic TrOCs by MBR decreased due to salinity build-up. By contrast, with the exception of 17α-ethynylestradiol, the removal of all hydrophobic TrOCs was not affected at high salinity. Moreover, salinity build-up had negligible impact on the residual accumulation of TrOCs in the sludge phase except for a few hydrophilic compounds. Additionally, the response of the biomass to salinity stress also dramatically enhanced the release of both soluble microbial products (SMP) and extracellular polymeric substances (EPS), leading to severe membrane fouling. Additionally, the response of the biomass to salinity stress also dramatically enhanced the release of both soluble microbial products and extracellular polymeric substances, leading to severe membrane fouling. Disciplines Engineering | Science and Technology Studies

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“…In fact, compounds with less than 50% removal efficiency have been shown to be very resistant to biological treatment in several previous studies. These include DEET, simazine, atrazine, meprobamate, diuron, carbamazepine, dilantin, and triamterene (Clara et al, 2005;Bernhard et al, 2006;Radjenovic et al, 2007;Hai et al, 2011;Tadkaew et al, 2011). On the other hand, compounds previously reported to be very amendable to biological treatment (Clara et al, 2005;Radjenovic et al, 2007;Tadkaew et al, 2011) were removed to below the analytical detection limit.…”

Section: Removal Of Trace Organicsmentioning

confidence: 99%

Performance of a novel osmotic membrane bioreactor (OMBR) system: Flux stability and removal of trace organics

Alturki

McDonald

Khan

et al. 2012

Bioresource Technology

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. b s t r a c tResults reported here highlight the potential and several challenges in the development of a novel osmotic membrane bioreactor (OMBR) process for the treatment of municipal wastewater. Following the initial gradual decline, a stable permeate flux value was obtained after approximately four days of continuous operation. There was evidence of continuous deterioration of biological activity of the OMBR system, possibly due to the build-up of salinity in the reactor. The removal of 25 out of 27 trace organic compounds with molecular weight higher than 266 g/mol was above 80% and was possibly governed by the interplay between physical separation of the FO membrane and biodegradation. In contrast, the removal efficiency values of the other 23 trace organic compounds with molecular weight less than 266 g/mol were very scattered. The removal efficiency of these low molecular weight compounds by OMBR treatment appears to depend mostly on biological degradation. Crown

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Removal of micropollutants by membrane bioreactor under temperature variation

Cited by 140 publications

References 42 publications

Coupling granular activated carbon adsorption with membrane bioreactor treatment for trace organic contaminant removal: Breakthrough behaviour of persistent and hydrophilic compounds

Coupling granular activated carbon adsorption with membrane bioreactor treatment for trace organic contaminant removal: Breakthrough behaviour of persistent and hydrophilic compounds

Effects of salinity build-up on biomass characteristics and trace organic chemical removal: Implications on the development of high retention membrane bioreactors

Performance of a novel osmotic membrane bioreactor (OMBR) system: Flux stability and removal of trace organics

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