Biomimetic Adsorbents: Enrichment of Trace Amounts of Organic Contaminants (TAOCs) in Aqueous Solution

Wei, Chaohai; Zhang, Xiaoxuan; Ren, Yuan; Yu, Xubiao

doi:10.5772/14549

Cited by 4 publications

(3 citation statements)

References 77 publications

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“…Increasing the feed temperature can lead to a change in the structure and morphology of the polymer matrix, causing an increase in the mean pore radius and MWCO (Sharma et al 2003). An increase in the solubility of some NSAIDs can occur due to the increase in the temperature of the surrounding solution (Wei et al 2011).…”

Section: Membrane Separation Processmentioning

confidence: 99%

Contemporary Methods for Removal of Nonsteroidal Anti-inflammatory Drugs in Water Reclamations

Nguyen

Commault

Sutherland

et al. 2020

The Handbook of Environmental Chemistry

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Global water quantity and quality are anticipated to decrease in the coming decades, as a result of both increasing global populations and the effects of climate change. Reusing and recycling water is a key part of reducing the pressure on our existing water supplies and the aquatic environment. However, the occurrence of non-steroidal anti-inflammatory drugs (NSAIDs) in secondary, and in some tertiary, treated effluents and sewage impacted water bodies is one of the major obstacles for the implementation of water reuse. For several decades, NSAIDs have been extensively used for therapeutic purposes in both humans and domestic livestock. The negative effects of NSAIDs on aquatic biota are just beginning to be realised. Currently, intensive treatments are required to remove effectively NSAIDs from recycled treated effluent in order to minimize, or eliminate risks to human health and aquatic environment. In this chapter, we focus the discussion on contemporary methods for NSAID removal including biological, physical, chemical and combined process that may provide a more effective and efficient alternative.

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Section: Membrane Separation Processmentioning

confidence: 99%

Contemporary Methods for Removal of Nonsteroidal Anti-inflammatory Drugs in Water Reclamations

Nguyen

Commault

Sutherland

et al. 2020

The Handbook of Environmental Chemistry

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“…The long alkyl chain is an interparticle bridge that links the cells together, which further enhances aggregation. Moreover, the long linear hydrocarbon chains form micelles that accelerate EPS release from biomass through the principle of intermiscibility. , …”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the long linear hydrocarbon chains form micelles that accelerate EPS release from biomass through the principle of intermiscibility. 18,19 Charge neutralization and EPS release shifts the cells' zeta potential toward zero, leading to improvements in biomass aggregation and harvesting efficiency. Although surfactantinduced release of EPS is beneficial, too much addition and micelle formation can bring about cell lysis and the release of intracellular polymeric substances (IPS), 16,17 which is unfavorable for biomass harvesting.…”

Section: ■ Introductionmentioning

confidence: 99%

Promoting Synechocystis sp. PCC 6803 Harvesting by Cationic Surfactants: Alkyl-Chain Length and Dose Control for the Release of Extracellular Polymeric Substances and Biomass Aggregation

Zhou

Lai

Eustance

et al. 2018

ACS Sustainable Chem. Eng.

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Development of an efficient biomass-harvesting technology for microalgae would achieve cost and energy savings in large-scale microalgae biomass cultivation. Cationic surfactants could improve biomass harvesting, but determining the optimal type and dose of surfactant requires mechanistic understanding. In this study, we evaluated how the alkyl-chain length and dose of three cationic surfactantshexadecyltrimethylammonium bromide (CTAB), myristyltrimethylammonium bromide (MTAB), and dodecyltrimethylammonium bromide (DTAB)affected biomass harvesting of Synechocystis. Flow cytometry (FC) with the nucleic-acid (NA) stain SYTOX Green (SG) was used to differentiate the release of extracellular polymeric substances (EPS) from cell lysis. All selected cationic surfactants dramatically improved the biomass-harvesting efficiency, and harvesting kinetics were represented well with a first-order kinetic model. The efficiency of biomass harvesting correlated positively with the alkyl-chain length; i.e., CTAB > MTAB > DTAB. A longer alkyl chain increased EPS release, which made it easier to achieve a less-negative zeta potential but without cell lysis. For CTAB, the largest cationic surfactant tested, a dose of 4.5 mM and treatment for 60 min achieved the maximum harvesting efficiency of ∼91%. This work lays the foundation for optimizing surfactant species and dose for biomass harvesting.

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Applications and impact of nanocellulose based adsorbents

2020

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Biomimetic Adsorbents: Enrichment of Trace Amounts of Organic Contaminants (TAOCs) in Aqueous Solution

Cited by 4 publications

References 77 publications

Contemporary Methods for Removal of Nonsteroidal Anti-inflammatory Drugs in Water Reclamations

Contemporary Methods for Removal of Nonsteroidal Anti-inflammatory Drugs in Water Reclamations

Promoting Synechocystis sp. PCC 6803 Harvesting by Cationic Surfactants: Alkyl-Chain Length and Dose Control for the Release of Extracellular Polymeric Substances and Biomass Aggregation

Applications and impact of nanocellulose based adsorbents

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