Nanopyroxene Grafting with β-Cyclodextrin Monomer for Wastewater Applications

Nafie, Ghada; Vitale, Gerardo; Ortega, Lante Carbognani; Nassar, Nashaat N.

doi:10.1021/acsami.7b13677

Cited by 20 publications

(13 citation statements)

References 61 publications

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“…Solubility of quartz in water has been documented in previous research which reveals that at the temperature of 423 K, the solubility is about 80 ppm. 25 The concentration of silica for the oxy-cracked sample at 423 K was around 60 ppm as confirmed by the ICP-AS measurement.…”

Section: Resultsmentioning

confidence: 55%

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Oxy-Cracking Reaction for Enhanced Settling and Dewaterability of Oil Sands Tailings

Nafie

Manasrah

Mackay

et al. 2019

Ind. Eng. Chem. Res.

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Oil sands exploitation in Alberta relies on water-intensive processes that result in large amounts of oil sand process-affected water (OSPW). Tailings ponds are used to store OSPW in accordance with government regulations. One of the main challenges of these tailings ponds is the settling of fine particles which, without treatment, would remain suspended for decades. This study introduces a novel application for the oxy-cracking technique to enhance fine particle settling through simultaneous oxidation and cracking reactions: residual bitumen and hydrocarbons are cracked and solubilized in the liquid phase, freeing the fine particles to agglomerate and settle faster. The pathway for this process is determined by the kinetics parameters, and it releases minimal CO2. A full lumped kinetics model study is presented to describe the oxy-cracking reaction. Settling enhancement and dewaterability were studied using the initial settling rate (ISR) and capillary suction time (CST) methods. After oxy-cracking, the mudline was reduced by 65% within 24 h with no settling observed in the original sample. CST experiments resulted in fast and easy dewaterability of the consolidated solids after an oxy-cracking reaction of neat OSPW samples. The oxy-cracking process outperforms other processes reported in the literature for diluted samples treated with large amounts of coagulants. Oxy-cracking and settling enhancement were further confirmed by the characterization techniques of GC–MS, FTIR, XRD, TGA, and TOC analysis. The proposed oxy-cracking technique offers new opportunities for the wastewater treatment of OSPW generated by the oil sands industry.

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Section: Resultsmentioning

confidence: 55%

“…These acids can be easily adsorbed from the water using various processes to reduce their toxic effect as described in our previous studies. 25 3.2. Settling Experiments.…”

Section: Resultsmentioning

confidence: 99%

Oxy-Cracking Reaction for Enhanced Settling and Dewaterability of Oil Sands Tailings

Nafie

Manasrah

Mackay

et al. 2019

Ind. Eng. Chem. Res.

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“…Synthesize β‐CD based NPs to offer an ecofriendly platform for the selective removal of organic compounds typically present in wastewater, industrialized misuse water and pharmaceutical residues in particular in municipal wastewater. The proof‐of‐concept computational modeling and experiments demonstrate that monomer grafted nanopyroxene of the sodium iron‐silicate aegirine are found to be promising candidates for the removal of polar organic compounds from wastewater, among other applications [185] . The biological treatment of wastewater nanofiltration offers a possible way for the removal of persistent organic pollutants POPs.…”

Section: Applications Of β‐Cds‐based Nanocomposite In Other Fieldsmentioning

confidence: 99%

“…The proof-ofconcept computational modeling and experiments demonstrate that monomer grafted nanopyroxene of the sodium ironsilicate aegirine are found to be promising candidates for the removal of polar organic compounds from wastewater, among other applications. [185] The biological treatment of wastewater nanofiltration offers a possible way for the removal of persistent organic pollutants POPs. Due to the increasing amount of POPs in general and pharmaceutical residues in particular in municipal wastewater.…”

Section: β-Cd Based Nanoplatforms For Cancer Treatmentmentioning

confidence: 99%

β‐Cyclodextrin‐Based Nanocomposite Derivatives: State of the Art in Synthesis, Characterization and Application in Molecular Recognition

Tarannum

Kumar

2022

ChemistrySelect

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This review describes the synthesis of nanocomposite derivatives based on β‐cyclodextrin (β‐CD) using silver nanoparticles (NPs), gold NPs, magnetic NPs, carbon nanotubes, nanosheets, carbon dots and graphene oxide NPs. These nanocomposites were prepared by green synthesis method, chemical method, reduction method, thermal reduction, ultrasonication method and hydrothermal method. β‐CD is cyclic oligosaccharide consisting of seven glucose units linked by 1,4‐α‐glycosidic bonds. Its external surface is hydrophilic due to the substantial hydroxyl groups, and the interior is hydrophobic. β‐CD are useful in nanocomposites and metallic NPs because they provide nanoplatforms for biocompatibility. β‐CD is commonly used to change NPs because of their excellent biocompatibility, amphipathic properties and for enhancing the morphological and chemical features of nanocomposites. Thus, nanostructured materials based on β‐CD may enhance the potential for molecular recognition property which is a natural phenomenon and fundamentally important in chemistry and biology. The most important area in molecular recognition research is design and synthesis of model receptors (hosts) to recognize substrates (guests) of biochemical significance to mimic biological events. Because NPs have a high surface‐to‐volume ratio when combined with molecularly imprinted polymers (MIPs). This review briefs the application and characterizations of β‐CD based nanocomposites derivatives in molecular recognition.

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“…Among these three types of cyclodextrins, β‐cyclodextrin is the most appealing and commercially available, on account of its easy synthesis, low cost, and high practicability . Cyclodextrin has been applied in almost all fields of industry, particularly agriculture , catalysis , chemistry , chromatography , food , gene engineering , maquillage , pharmaceuticals , textiles , and wastewater treatment .…”

Section: Introductionmentioning

confidence: 99%

Application of amino‐based chitosan cyclodextrin derivatives for the extraction of catechins in green tea with high‐performance liquid chromatography

Dai

Row

2019

J of Separation Science

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Chitosan derivatives have been studied widely, but poor solubility in water restricts their applications. In this study, four types of amine‐based chitosan derivatives were prepared and modified further with beta‐cyclodextrin. The sequential microextraction of catechins ((+)‐catechin and (−)‐epigallocatechin gallate) from green tea powder by an optimized solid‐phase extraction method using these four derivatives was investigated. The optimal conditions for the extraction of catechins were 60°C for a 40 min extraction period. The purity and amount of each catechin were determined by high‐performance liquid chromatography. The different amines strengthened the extraction capacity of chitosan. Among the four types of amines, ethylene diamine grafted chitosan beta‐cyclodextrin had the highest extraction capacity to catechins. Therefore, this material was used in the extraction assay, and the standard curves of (+)‐catechin and (−)‐epigallocatechin gallate were linear over the concentration range, 0.25–500 µg/mL, after assaying five data points in duplicate. Solid‐phase extraction with the amino‐based chitosan beta‐cyclodextrin system is a new application of chitosan, which has potential applications in the extraction of bioactive compounds from plant materials or the removal of different impurities from specific extracts.

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Nanopyroxene Grafting with β-Cyclodextrin Monomer for Wastewater Applications

Cited by 20 publications

References 61 publications

Oxy-Cracking Reaction for Enhanced Settling and Dewaterability of Oil Sands Tailings

Oxy-Cracking Reaction for Enhanced Settling and Dewaterability of Oil Sands Tailings

β‐Cyclodextrin‐Based Nanocomposite Derivatives: State of the Art in Synthesis, Characterization and Application in Molecular Recognition

Application of amino‐based chitosan cyclodextrin derivatives for the extraction of catechins in green tea with high‐performance liquid chromatography

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