Treatment of mixed contamination in water using cyclodextrin-based materials

Cathum, S.J.; Boudreau, Amie; Obenauf, Alison; Dumouchel, A.; Brown, Carl E.; Punt, M.

doi:10.1002/rem.20100

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…One potential complexing agent identified for cleaning up mixed waste is cyclodextrin (Skold et al 2009). Cathum et al (2006) investigated the effectiveness of a CD-based solid material for the removal of mixed dissolved contaminants in water. The removal efficiency was found to be 70 % for total heavy metals (cadmium, lead, chromium, iron, nickel, cobalt, and mercury) to 98 % for polychlorinated biphenyls (PCBs).…”

Section: Cyclodextrin As a Remediation Optionmentioning

confidence: 99%

Co-contamination of water with chlorinated hydrocarbons and heavy metals: challenges and current bioremediation strategies

Arjoon

Olaniran

Pillay

2012

Int. J. Environ. Sci. Technol.

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Chlorinated hydrocarbons can cause serious environmental and human health problems as a result of their bioaccumulation, persistence and toxicity. Improper disposal practices or accidental spills of these compounds have made them common contaminants of soil and groundwater. Bioremediation is a promising technology for remediation of sites contaminated with chlorinated hydrocarbons. However, sites co-contaminated with heavy metal pollutants can be a problem since heavy metals can adversely affect potentially important biodegradation processes of the microorganisms. These effects include extended acclimation periods, reduced biodegradation rates, and failure of target compound biodegradation. Remediation of sites co-contaminated with chlorinated organic compounds and toxic metals is challenging, as the two components often must be treated differently. Recent approaches to increasing biodegradation of organic compounds in the presence of heavy metals include the use of dual bioaugmentation; involving the utilization of heavy metal-resistant bacteria in conjunction with an organicdegrading bacterium. The use of zero-valent irons as a novel reductant, cyclodextrin as a complexing agent, renewable agricultural biosorbents as adsorbents, biosurfactants that act as chelators of the co-contaminants and phytoremediation approaches that utilize plants for the remediation of organic and inorganic compounds have also been reported. This review provides an overview of the problems associated with co-contamination of sites with chlorinated organics and heavy metals, the current strategies being employed to remediate such sites and the challenges involved.

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Section: Cyclodextrin As a Remediation Optionmentioning

confidence: 99%

Co-contamination of water with chlorinated hydrocarbons and heavy metals: challenges and current bioremediation strategies

Arjoon

Olaniran

Pillay

2012

Int. J. Environ. Sci. Technol.

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“…They are insoluble in both polar and non-polar solvents. Therefore, they were applied for isolation or removal of specific compounds from a mixture (Murai et al, 1998;Kozlowski et al, 2005;Cathum et al, 2006).…”

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confidence: 99%

Removal of dissolved estrogen in sewage effluents by β-cyclodextrin polymer

Oishi

Moriuchi

2010

Science of The Total Environment

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Substances with estrogenic activity are found in effluents of municipal sewage plants and dairy farms. These effluents have the potential to induce feminization in male fish. In this study, cyclodextrin polymers (CDPs) that are insoluble in both polar and non-polar solvents were selected for the removal of dissolved estrogens in the effluent of a municipal sewage plant. The removal capacity of CDPs was high in the order of β-CDP≥γ-CDP≫α-CDP. The mechanism for adsorption of estrogens to β-CDP was not only due to a host-guest interaction as molecular recognition by β-cyclodextrin (β-CD), but also due to adsorption by the polymer matrix. β-CDP of 0.2% (w/v) removed 17β-estradiol (E2) of about 70% from 10(-11)mol/L, and more than 90% from ≥10(-10)mol/L. The removal ratios of E2 in the presence of cholesterols, which are contained at higher concentrations than estrogens in sewage effluents and are adsorptive competitor for β-CDP, were about 85% at a cholesterol/E2 molar ratio of 100 and >90% at molar ratios of 0.1, 1, and 10. The effluent from a municipal sewage plant had estrogenic activity corresponding to 5.5×10(-11)molE2/L by yeast two-hybrid assay. The estrogens in the effluent were also removed >90% by the β-CDP treatment. Therefore, β-CDP is able to remove dissolved estrogens over a wide range of concentrations in the presence of various contaminants such as wastewaters.

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Preparation of thermally stable magnetic poly(urethane-imide)/nanocomposite containing β-cyclodextrin cavities as new adsorbent for lead and cadmium

Eibagi

Faghihi

2020

J Polym Res

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Treatment of mixed contamination in water using cyclodextrin-based materials

Cited by 4 publications

References 14 publications

Co-contamination of water with chlorinated hydrocarbons and heavy metals: challenges and current bioremediation strategies

Co-contamination of water with chlorinated hydrocarbons and heavy metals: challenges and current bioremediation strategies

Removal of dissolved estrogen in sewage effluents by β-cyclodextrin polymer

Preparation of thermally stable magnetic poly(urethane-imide)/nanocomposite containing β-cyclodextrin cavities as new adsorbent for lead and cadmium

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