Complexation of an Azo Dye by Cyclodextrins: A Potential Strategy for Water Purification

Saifi, Anas; Joseph, Jojo P.; Singh, Atul Pratap; Pal, Asish; Kumar, Kamlesh

doi:10.1021/acsomega.0c05684

Cited by 23 publications

(10 citation statements)

References 67 publications

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“…The hydrophobic dye can be removed from the aqueous solution through inclusion complex formation (Saifi et al, 2021). The potential of β-cyclodextrin (β-CD) was studied to remove highly toxic oil orange SS (OOSS) dye by complexion.…”

Section: Complexionmentioning

confidence: 99%

Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

Aragaw

Bogale

2021

Front. Environ. Sci.

130

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Dyes, especially azo dyes contained in wastewaters released from textile, pigment, and leather industries, are entering into natural waterbodies. This results in environmental deterioration and serious health damages (for example carcinogenicity and mutagenesis) through food chains. Physiochemical, membrane processes, electrochemical technology, advanced oxidation processes, reverse osmosis, ion exchange, electrodialysis, electrolysis, and adsorption techniques are commonly used conventional treatment technologies. However, the limitations of most of these methods include the generation of toxic sludge, high operational and maintenance costs. Thus, technological advancements are in use to remediate dyes from effluents. Adsorption using the nonconventional biomass-based sorbents is the greatest attractive alternatives because of their low cost, sustainability, availability, and eco-friendly. We present and reviewed up-to-date publications on biomass-based sorbents used for dye removal. Conceptualization and synthesizing their state-of-the-art knowledge on their characteristics, experimental conditions used were also discussed. The merits and limitations of various biosorbents were also reflected. The maximum dye adsorption capacities of various biosorbents were reviewed and synthesized in the order of the biomass type (algae, agricultural, fungal, bacterial, activated carbon, yeast, and others). Surface chemistry, pH, initial dye concentration, temperature, contact time, and adsorbent dose as well as the ways of the preparations of materials affect the biosorption process. Based on the average dye adsorption capacity, those sorbents were arranged and prioritized. The best fit of the adsorption isotherms (for example Freundlich and Langmuir models) and basic operating parameters on the removal dyes were retrieved. Which biomass-based adsorbents have greater potential for dye removal based on their uptake nature, cost-effectiveness, bulk availability, and mono to multilayer adsorption behavior was discussed. The basic limitations including the desorption cycles of biomass-based adsorbent preparation and operation for the implementation of this technology were forwarded.

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Section: Complexionmentioning

confidence: 99%

Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

Aragaw

Bogale

2021

Front. Environ. Sci.

130

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“…Fan et al described the removal of methylene blue dye by β-CD-modified Fe 3 O 4 nanoparticles and its reaction with chitosan. The β-CD-based adsorbent reported by Crini et al revealed high adsorption capacities toward Basic Blue 9 (Saifi et al , 2021). Qin et al also reported a “pocket” structure that shows excellent adsorption for the simultaneous removal of organic dyes (rhodamine B and Congo red) and heavy metal ions Cd(II) via a β-CD cross-linked polymer.…”

Section: Methodsmentioning

confidence: 99%

Impregnation of dye-conjugated miniaturized system on paper strip for detection of biomarker in renal cancer

Takke

Shende²

2022

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Purpose The purpose of this study was to design a paper strip-based non-invasive urine analysis system for the qualitative detection of biomarker aquaporin-1 (AQP1) in renal cancer (RC). RC accounts for 3% of all cancers and 85% of all kidney tumors and mainly originates from the kidney cortex. In recent times, higher urine concentration of AQP1 in patients with RC was confirmed as a specific biomarker of the disease. Hence, the noninvasive, user-friendly and self-diagnostic method is required for the detection of aquaporin biomarkers in RC. Design/methodology/approach The present research work was focused on the development and characterization of a dye conjugated cyclodextrin-based miniaturized system for impregnation on Whatman filter paper to identify RC using AQP1 biomarker present in urine samples. Findings It was observed that the test strip dipped into the urine sample, and the yellow color intensity increased with a decrease in AQP1 concentration due to the transformation of the dye system of free basic form into bound acidic form. The Hue-Saturation-Value profiling was used to observe the effect of color change using a smartphone application. The paper strip-based urine analysis system is highly sensitive for the detection of AQP1 in the range of 10 to 1,000 ng. Originality/value The successful validation indicated that this biosensor is likely to contribute to the development of point-of-care, novel, personalized diagnostics and ensure prolonged survival of RC patients in the near future.

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“…OOSS dye encapsulation with the β-CD hydrophobic cavity was confirmed by thermal analysis and FTIR. The complexation induced stability in the matrix, due to host-guest complex formation [94]. In another study, β-CD and ε-polycaprolactone (PCL) composite fibers were prepared by the electrospinning method through the host-guest complexation mechanism, as shown in Figure 4.…”

Section: Application Of Cyclodextrin-based Adsorbents 41 Removal Of Dyesmentioning

confidence: 99%

Recent Advancements in Cyclodextrin-Based Adsorbents for the Removal of Hazardous Pollutants from Waters

et al. 2022

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Water is an essential substance for the survival on Earth of all living organisms. However, population growth has disturbed the natural phenomenon of living, due to industrial growth to meet ever expanding demands, and, hence, an exponential increase in environmental pollution has been reported in the last few decades. Moreover, water pollution has drawn major attention for its adverse effects on human health and the ecosystem. Various techniques have been used to treat wastewater, including biofiltration, activated sludge, membrane filtration, active oxidation process and adsorption. Among the mentioned, the last method is becoming very popular. Moreover, among the sorbents, those based on cyclodextrin have gained worldwide attention due to their excellent properties. This review article overviewed recent contributions related to the synthesis of Cyclodextrin (CD)-based adsorbents to treat wastewater, and their applications, especially for the removal of heavy metals, dyes, and organic pollutants (pharmaceuticals and endocrine disruptor chemicals). Furthermore, new adsorption trends and trials related to CD-based materials are also discussed regarding their regenerative potential. Finally, this review could be an inspiration for new research and could also anticipate future directions and challenges associated with CD-based adsorbents.

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Complexation of an Azo Dye by Cyclodextrins: A Potential Strategy for Water Purification

Cited by 23 publications

References 67 publications

Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

Biomass-Based Adsorbents for Removal of Dyes From Wastewater: A Review

Impregnation of dye-conjugated miniaturized system on paper strip for detection of biomarker in renal cancer

Recent Advancements in Cyclodextrin-Based Adsorbents for the Removal of Hazardous Pollutants from Waters

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