Adsorption and solid phase extraction of 8-hydroxyquinoline from aqueous solutions by using natural bentonite

Erdem, Bilge; Özcan, Adnan

doi:10.1016/j.apsusc.2009.12.126

Cited by 29 publications

(16 citation statements)

References 27 publications

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“…The adsorption process was endothermic since the adsorption equilibrium was favored by increasing the temperature. The heat of adsorption, H ad , can be computed from the van't Hoff equation [26]:…”

Section: Effect Of Temperature On the Sorption Capacitymentioning

confidence: 99%

Sorption mechanism of Cd(II) from water solution onto chicken eggshell

Flores-Cano

Leyva‐Ramos

Mendoza‐Barron

et al. 2013

Applied Surface Science

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Section: Effect Of Temperature On the Sorption Capacitymentioning

confidence: 99%

Sorption mechanism of Cd(II) from water solution onto chicken eggshell

Flores-Cano

Leyva‐Ramos

Mendoza‐Barron

et al. 2013

Applied Surface Science

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“…Although microbial and non-microbial transformation of soil allelochemicals plays an important role in determining allelopathic activities [31] , allelopathic potential of primary metabolites of HQ largely not worked out. 8-Hydroxyquinoline, however, plays an important role as a chelating agent [2] , [7] , [32] . Iron-HQ complex also reported to suppress the chemical oxidation of pyrite (FeS 2 ), a most abundant sulphide associated with coal mines [27] .…”

Section: Discussionmentioning

confidence: 99%

Interaction of 8-Hydroxyquinoline with Soil Environment Mediates Its Ecological Function

2010

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BackgroundAllelopathic functions of plant-released chemicals are often studied through growth bioassays assuming that these chemicals will directly impact plant growth. This overlooks the role of soil factors in mediating allelopathic activities of chemicals, particularly non-volatiles. Here we examined the allelopathic potential of 8-hydroxyquinoline (HQ), a chemical reported to be exuded from the roots of Centaurea diffusa.Methodology/Principal FindingsGrowth bioassays and HQ recovery experiments were performed in HQ-treated soils (non-sterile, sterile, organic matter-enriched and glucose-amended) and untreated control soil. Root growth of either Brassica campestris or Phalaris minor was not affected in HQ-treated non-sterile soil. Soil modifications (organic matter and glucose amendments) could not enhance the recovery of HQ in soil, which further supports the observation that HQ is not likely to be an allelopathic compound. Hydroxyquinoline-treated soil had lower values for the CO2 release compared to untreated non-sterile soil. Soil sterilization significantly influenced the organic matter content, PO4-P and total organic nitrogen levels.Conclusion/SignificanceHere, we concluded that evaluation of the effect of a chemical on plant growth is not enough in evaluating the ecological role of a chemical in plant-plant interactions. Interaction of the chemical with soil factors largely determines the impact of HQ on plant growth.

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“…Because the adsorption isotherm fits well with the Langmuir isotherm model at 288, 298, and 308 K, the adsorption enthalpy (∆H), adsorption entropy (∆S), and adsorption free energy (∆G) of CHE on the ZSM-5 molecular sieves can be calculated using the Langmuir constant of K L based on the following equations [34]:…”

Section: Adsorption Ermodynamicsmentioning

confidence: 99%

Adsorption of Chelerythrine from Toddalia asiatica (L.) Lam. by ZSM-5

Liu

Guo

Zhuo-bing

et al. 2020

Advances in Polymer Technology

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Separation and purification of active components from biomass by inorganic materials during the pretreatment process of hydrothermal conversion are studied in this work. The batch experiment results show that an initial solution pH of 6 favors chelerythrine adsorption, and the optimum adsorbent dosage is 2.0 g. The adsorption mechanism of ZSM-5 for chelerythrine is investigated by adsorption kinetics, isotherm adsorption models, and thermodynamics analysis. The results show that the kinetics data fit the pseudo-second-order model well (R2 = 0.9991), and the intraparticle diffusion model has 3 diffusion stages, preliminarily indicating that chemisorption plays a major role in the adsorption process, and the sorption mechanism includes intraparticle, external, and boundary diffusion. The adsorption isotherms agree well with the Langmuir model, indicating the occurrence of monolayer molecular adsorption during the adsorption process. Meanwhile, the maximum adsorption capacity is 2.327, 2.072, and 1.877 mg/g at different temperatures (288 K, 298 K, and 308 K), respectively. The thermodynamic data demonstrate that the adsorption process is exothermic and spontaneous in nature. These observed results clearly confirm that ZSM-5 has potential superior properties for the enrichment and purification of alkaloids during the pretreatment of biomass.

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Adsorption and solid phase extraction of 8-hydroxyquinoline from aqueous solutions by using natural bentonite

Cited by 29 publications

References 27 publications

Sorption mechanism of Cd(II) from water solution onto chicken eggshell

Sorption mechanism of Cd(II) from water solution onto chicken eggshell

Interaction of 8-Hydroxyquinoline with Soil Environment Mediates Its Ecological Function

Adsorption of Chelerythrine from Toddalia asiatica (L.) Lam. by ZSM-5

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