Sorption/Desorption of Polychlorinated Dibenzo-P-Dioxins and Polychlorinated Dibenzo Furans (PCDDs/PCDFs) in the Presence of Cyclodextrins

Immobilized β-Cyclodextrin on Surface-Modified Carbon-Coated Cobalt Nanomagnets: Reversible Organic Contaminant Adsorption and Enrichment from Water

“…For the adsorption/desorption performance of the nanomagnets, phenolphthalein was used as a (nontoxic) model compound representing organic contaminants (e.g., dioxin, bisphenol A) due to their very similar adsorption behaviors . The use of phenolphthalein as a model compound has been reported in earlier studies. − Qualitative adsorption/desorption behavior of the phenolphthalein on bare (unfunctionalized) as well as on cyclodextrin-functionalized nanomagnets is shown in Figure .…”

“…Cyclodextrins (CD) have reached significant attention as efficient and selective adsorbents in a wide range of processes, ranging from cholesterol extraction from foods, , encapsulation of flavors in foods or cosmetics, and environmental contaminant isolation such as dioxin, trichlorfon, or phenols , to cytostatic agents in drug delivery or general medicinal applications. − These cone-shaped sugars also gain rapid interest in biotechnological applications, i.e., as biocatalysts of antimalarial drug artemisin. − This fascinating properties are based on cyclodextrin (hydrophobic) cavities (various sizes available, e.g., α-CD, β-CD, γ-CD) which can encapsulate hydrophobic compounds. Substituents are often introduced for tuning of the hydrophobicity/hydrophilicity or used as quality control by color change. , Because cyclodextrins are highly soluble in water, they need to be immobilized for an efficient recovery of the adsorbed target compound. − Many approaches − have investigated the use of cyclodextrin/polymer composites: Once the cyclodextrins have captured their target compound in their cavity, the polymer-based particles are filtered off.…”

Dioxin removal from contaminated soils by ethanol washing

“…Recently alternative soil-washing processes have been developed and the use of surfactants or other additives has shown to be a feasible method to extract more hydrophobic compounds form soils such as organic contaminants [5]. For instance, Yeom et al reported the separation of PAHs from soil using surfactants [11] and Cathum et al investigated the desorption of dioxins and furans in the presence of cyclodextrins [12]. Also desorption of dioxins from soil in the presence of vegetable oils has been reported in several studies [13,14].…”

超分子主体化合物环糊精应用于环境污染物分离分析的研究进展

“…Ehsan [84] CD( -β-CD -β-CD) CDs , -β-CD PCBs . Cathum [85] CDs / (PCDDs/PCDFs) , CDs PCDDs/PCDFs CDs . CDs , -β-CD PCDDs/PCDFs , 81%, 28 96%; α-CD β-CD 28…”