Characterization of endotoxic indicative organic matter (2-keto-3deoxyoctulosonic acid) in raw and biologically treated domestic wastewater

Guizani, Mokhtar; Yusuke, Nogoshi; Dhahbi, Mahmoud; Funamizu, Naoyuki

doi:10.1016/j.watres.2010.08.013

Cited by 9 publications

(14 citation statements)

References 27 publications

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“…First, Bio-film can be formed on the surface of MBR and it contributes to the release of some endotoxin material (especially low molecular weight MW) that passes through MBR. Second, endotoxic active material is mainly composed of large molecules as reported by Guizani et al [8]. These large molecules are being biodegraded on the surface of MBR and are converted into smaller molecules that could pass through the membrane.…”

Section: Assaysmentioning

confidence: 93%

“…MBR systems offer several advantages over conventional treatment systems. For instance, permeates of membranes with pore size of about 0.1 μm to 0.4 μm is of higher quality as compared to conventional effluent [8]. As matter of fact, MBRs are of interest wherever high quality effluent is required, as they do not replace only secondary clarifier but also replaces treatment steps like sand filtration and ultra-violet (UV) disinfection as well.…”

Section: Introductionmentioning

confidence: 99%

“…Organic matter, showing endotoxicity in reclaimed wastewater, aggregates into molecules larger than 100 KDa [8], which makes endotoxin removal from reclaimed water feasible using tight membranes. This can be enhanced by the domination of hydrophobic fractions of endotoxins [8].…”

Section: Introductionmentioning

confidence: 99%

“…This can be enhanced by the domination of hydrophobic fractions of endotoxins [8]. In addition, ultra-filtration using membranes with about 10 KDa nominal-molecular weight cut-off are routinely employed to get ultrapure water in laboratory systems and it is found in operation wherever endotoxins are not allowed to enter sterile equipment [9].…”

Section: Introductionmentioning

confidence: 99%

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Microfiltration, Nano-filtration and Reverse Osmosis for the Removal of Toxins (LPS Endotoxins) from Wastewater

Guizani¹

2012

J Membra Sci Technol

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Lipopolysaccharide (LPS) endotoxin, a bacterial byproduct abundantly present in wastewater, is more and more representing a major concern in wastewater treatment sector for the potential health risk it represents. It is, therefore, more urgent than before to protect consumers from contaminating their fresh potable water reserves with LPS endotoxin through aquifer replenishment using reclaimed wastewater or by supplying reclaimed wastewater as potable water. Membrane treatment is an alternative to activated sludge process and is the most commonly used to treat wastewater. Moreover, nano-filtration and reverse osmosis are the most advanced technologies used to treat wastewater to a potable level. Removal efficiency of LPS endotoxin using Membrane bioreactors (MBRs) and Nanofiltration (NF) and Reverse Osmosis (RO) is subject of this paper. It revealed that these advanced technologies could remove a significant amount of endotoxin. However, levels of concentration in the product water are still much higher than the one found in tap water and it is not advisable to supply this water directly to consumers. Further investigations are required to determine the best management practices for a safe supply of potable water from reclaimed wastewater

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Section: Assaysmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microfiltration, Nano-filtration and Reverse Osmosis for the Removal of Toxins (LPS Endotoxins) from Wastewater

Guizani¹

2012

J Membra Sci Technol

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“…In this way, Guizani et al . stated that nowadays one of the principal emergent issues associated with indirect potable reuse is the presence of LPS endotoxins resulting from the SMPs that are abundant in reclaimed wastewater, due to their presence in domestic wastewater and effluents from biological reactors in STPs.…”

Section: Introductionmentioning

confidence: 99%

Strategies to minimize the release of endotoxins in effluents from sewage treatment plants

Barcón

Alvarino

Gómez³

et al. 2014

Environ. Prog. Sustainable Energy

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The occurrence of endotoxins in the effluents generated in a full‐scale conventional activated sludge (CAS) wastewater treatment plant was studied, with values up to 843 EU mL−1, which might suppose an important threat to the environment and, if water reuse is considered, event to potential consumers. The use of advanced wastewater treatment technologies such as membrane biological reactors (MBRs), which combines biological process and membrane filtration, is a suitable alternative to minimize these biological micropollutants, thus allowing significant reductions in final effluents (lower than 100 EU mL−1 in this work). Different post‐treatment alternatives were applied to the secondary effluent of the full‐scale CAS plant such as tertiary membrane filtration (TMF), coagulation‐flocculation (CF), adsorption with activated carbon and ozonation. Results indicate that CF and TMF are the best options to minimize the presence of endotoxins in the final effluent (>90% and up to 72%, respectively). The use of powdered activated carbon was not so effective (8–30%) even after a prolonged contact time of 24 h. Finally, ozonation appears not to be adequate due to the low removal efficiencies achieved (40% maximum) as well as the potential generation of more endotoxic material, especially at contact times below 30 min. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 432–436, 2015

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Endotoxin health risk associated with high pressure cleaning using reclaimed water

Barker

O'Toole

Sinclair

et al. 2017

Microbial Risk Analysis

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Characterization of endotoxic indicative organic matter (2-keto-3deoxyoctulosonic acid) in raw and biologically treated domestic wastewater

Cited by 9 publications

References 27 publications

Microfiltration, Nano-filtration and Reverse Osmosis for the Removal of Toxins (LPS Endotoxins) from Wastewater

Microfiltration, Nano-filtration and Reverse Osmosis for the Removal of Toxins (LPS Endotoxins) from Wastewater

Strategies to minimize the release of endotoxins in effluents from sewage treatment plants

Endotoxin health risk associated with high pressure cleaning using reclaimed water

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