Combined iron and sulfate reduction biostimulation as a novel approach to enhance BTEX and PAH source-zone biodegradation in biodiesel blend-contaminated groundwater

Müller, Juliana Braun; Ramos, Débora Toledo; Larose, Catherine; Fernandes, Marilda; Lazzarin, Helen Simone Chiaranda; Vogel, Timothy M.; Corseuil, Henry Xavier

doi:10.1016/j.jhazmat.2016.12.005

Cited by 63 publications

(24 citation statements)

References 60 publications

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Section: Sorption Isothermsmentioning

confidence: 99%

“…In order to go deeper on the sorption mechanism, Freundlich [71,72] and Henry [73] models have been fitted to the experimental sorption data for the hydrogel with intermediate swelling degree. These models can be expressed by using the Equations (9) and (10), respectively. q e = K F C e 1/ n F (9) q e = K H C e (10) where K F and K H are the Freundlich and Henry constants and n F is a constant related with surface heterogeneity [72].…”

Section: Sorption Isothermsmentioning

confidence: 99%

“…These models can be expressed by using the Equations (9) and (10), respectively. q e = K F C e 1/ n F (9) q e = K H C e (10) where K F and K H are the Freundlich and Henry constants and n F is a constant related with surface heterogeneity [72]. Figure S4 shows the sorption isotherms fitted by the two models for the six aromatic compounds mixtures.…”

Section: Sorption Isothermsmentioning

confidence: 99%

“…Figure S4 shows the sorption isotherms fitted by the two models for the six aromatic compounds mixtures. Table 3 shows the fitting parameters as well as both the determination coefficients and the AIC for the fitting of Equations (9) and (10) to the experimental data. It can be concluded that Equation (10) shows better fitting to the experimental data.…”

Section: Sorption Isothermsmentioning

confidence: 99%

“…[7][8][9]. BTXs and PAHs include recalcitrant, mutagenic, and carcinogenic compounds and, consequently, remediation strategies need to be developed for their treatment [4,6,8,10,11].…”

Section: Introductionmentioning

confidence: 99%

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Uncommon Sorption Mechanism of Aromatic Compounds onto Poly(Vinyl Alcohol)/Chitosan/Maleic Anhydride-β-Cyclodextrin Hydrogels

et al. 2020

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Aromatic hydrocarbons are extensive environmental pollutants occurring in both water and air media, and their removal is a priority effort for a healthy environment. The use of adsorbents is among the several strategies used for the remediation of these compounds. In this paper, we aim the synthesis of an amphiphilic hydrogel with the potential for the simultaneous sorption of a set of monocyclic and polycyclic aromatic hydrocarbons associated with toxicity effects in humans. Thus, we start by the synthesis of a copolymer-based in chitosan and β-cyclodextrin previously functionalized with the maleic anhydride. The presence of β-cyclodextrin will confer the ability to interact with hydrophobic compounds. The resulting material is posteriorly incorporated in a cryogel of poly(vinyl alcohol) matrix. We aim to improve the amphiphilic ability of the hydrogel matrix. The obtained hydrogel was characterized by swelling water kinetics, thermogravimetric analysis, rheological measurements, and scanning electron microscopy. The sorption of aromatic hydrocarbons onto the gel is characterized by pseudo-first-order kinetics and Henry isotherm, suggesting a physisorption mechanism. The results show that the presence of maleic anhydride-β-cyclodextrin and chitosan into hydrogels leads to an increase in the removal efficiency of the aromatic compounds. Additionally, the capacity of this hydrogel for removing these pollutants from a fossil fuel sample has also been tested.

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Section: Sorption Isothermsmentioning

confidence: 99%

Section: Sorption Isothermsmentioning

confidence: 99%

Section: Sorption Isothermsmentioning

confidence: 99%

Section: Sorption Isothermsmentioning

confidence: 99%

“…[7][8][9]. BTXs and PAHs include recalcitrant, mutagenic, and carcinogenic compounds and, consequently, remediation strategies need to be developed for their treatment [4,6,8,10,11].…”

Section: Introductionmentioning

confidence: 99%

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