Development of an innovative soil remediation: “Cyclodextrin-enhanced combined technology”

Leitgib, Laura; Gruiz, Katalin; Fenyvesi, Éva; Balogh, Gábor; Murányi, Attila

doi:10.1016/j.scitotenv.2007.10.055

Cited by 23 publications

(8 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…12,[19][20][21] Another particularly important application of CDs is in the field of environmental sciences. By forming the inclusion complexes, CDs can enhance the bioavailability of some hydrophobic organic pollutants, improve the transport of several low-polarity organic compounds in the soil, [22][23][24][25][26][27][28] and lodge and immobilize toxic compounds inside the cavities to promote their decomposition.…”

Section: Introductionmentioning

confidence: 99%

“…For example, in pharmaceutics, CDs can not only improve the hydrophilicity of highly lipophilic drugs, but also increase the stability and reduce the toxicity of some drugs. − In the food industry, CDs are used to increase the solubility of vitamins, colorants, and unsaturated fats, and to eliminate the bitter tastes of the foods. ,− Another particularly important application of CDs is in the field of environmental sciences. By forming the inclusion complexes, CDs can enhance the bioavailability of some hydrophobic organic pollutants, improve the transport of several low-polarity organic compounds in the soil, − and lodge and immobilize toxic compounds inside the cavities to promote their decomposition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on the Inclusions of PCB52 with Cyclodextrins by Performing DFT Calculations and Molecular Dynamics Simulations

2010

View full text Add to dashboard Cite

The effective enrichment and identification of lowly concentrated polychlorinated biphenyls (PCBs) in the environment is attracting enormous research attention due to human health concerns. Cyclodextrins (CDs) are known to be capable of forming inclusion complexes with a variety of organic molecules. The purpose of this study is to provide theoretical evidence of whether CDs as host molecules can include the guest molecules PCBs to form stable host-guest inclusion complexes, and if so, whether the general infrared and Raman techniques are suitable for the direction of CD-modified PCBs. Focusing on a representative PCB molecule, 2,2',5,5'-tetrachlorobiphenyl (PCB52), we carried out density functional theory calculations and molecular dynamics (MD) simulations on its complexes with α-, β-, and γ-CDs with different host-guest stoichiometry ratios, including 1:1, 1:2, 2:1, and 2:2. On the basis of both the optimized geometries and calculated energy changes raised from encapsulating the guest molecule into the cavities of CDs, the CDs are believed to be suitable hosts for accommodating PCB52 guest molecules. The stability of inclusion complexes depends on both the type of CD and host-guest stoichiometry ratio. MD simulations give a clear picture of the scene on how the PCB52 molecule enters the cavity of β-CD. The vibrational analyses on the 1:1 complexes of CDs provide information for the spectral characterization of the inclusion complexes: Raman spectroscopy can deliver the characteristic bands of PCB52, whereas IR spectroscopy cannot uniquely assign them, implying that Raman spectroscopy is a useful technique for the identification of CD-modified PCBs. The present theoretical results are expected to provide guidance for the relevant experimental research.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on the Inclusions of PCB52 with Cyclodextrins by Performing DFT Calculations and Molecular Dynamics Simulations

2010

View full text Add to dashboard Cite

show abstract

“…[76] Randomly methylated b-cyclodextrin was shown to enhance microbial degradation of old diesel fuel and engine oil in the unsaturated zone in a bioventing experiment. [77] Cyclodextrins (hydroxypropyl-b-cyclodextrin) were also shown to be a useful extraction medium for determining the bioavailable fraction of PAHs and thus for predicting the endpoint of a biological degradation. [97] 7.…”

mentioning

confidence: 99%

Phytoremediation of Organic Contaminants in Soil and Groundwater

2008

View full text Add to dashboard Cite

Phytoremediation is an emerging technology for the clean-up of sites contaminated with hazardous chemicals. The term phytoremediation refers to a number of technologies that use photoautotrophic vascular plants for the remediation of sites contaminated with inorganic and organic contaminants. Phytoremediation of organic contaminants can be organized by considering 1) the green liver concept, which elucidates the metabolism of contaminants in planta versus that of contaminants ex planta (e.g. rhizosphere), 2) processes that lead to complete degradation (mineralization) of contaminants as opposed to those that only lead to partial degradation or transformation, and 3) active plant uptake versus passive processes (e.g. sorption). Understanding of these processes needs an interdisciplinary approach involving chemists, biologists, soil scientists, and environmentalists. This Review presents the basic concepts of phytoremediation of organic contaminants in soil and groundwater using selected contaminants as examples.

show abstract

“…Cyclodextrin concentrations used to achieve a significant improved desorption in field trials are situated between 1.5% (w/v) and 20% resulting in contaminant concentrations between 3 and 20,000 times higher than during a water flush (w/v) (Blanford et al, 2001;Boving et al, 1998;McCray and Brusseau, 1998;Leitgib et al, 2008;Tick et al, 2003). A high recovery of the CD from the washing would reduce the costs and makes the technique also economically interesting for the soil remediation industry.…”

Section: Introductionmentioning

confidence: 99%

Potential of activated carbon to recover randomly-methylated-β-cyclodextrin solution from washing water originating from in situ soil flushing

Sniegowski

Vanhecke

D'Huys

et al. 2014

Science of The Total Environment

View full text Add to dashboard Cite

Development of an innovative soil remediation: “Cyclodextrin-enhanced combined technology”

Cited by 23 publications

References 23 publications

Investigation on the Inclusions of PCB52 with Cyclodextrins by Performing DFT Calculations and Molecular Dynamics Simulations

Investigation on the Inclusions of PCB52 with Cyclodextrins by Performing DFT Calculations and Molecular Dynamics Simulations

Phytoremediation of Organic Contaminants in Soil and Groundwater

Potential of activated carbon to recover randomly-methylated-β-cyclodextrin solution from washing water originating from in situ soil flushing

Contact Info

Product

Resources

About