Zeolites in a permeable reactive barrier (PRB): One-year of field experience in a refinery groundwater. Part 2: Zeolite characterization

Vignola, Rodolfo; Bagatin, Roberto; D’Auris, Alessandra De Folly; Massara, Elisabetta Previde; Ghisletti, Danila; Millini, Roberto; Sisto, R.

doi:10.1016/j.cej.2011.10.052

Cited by 28 publications

(14 citation statements)

References 6 publications

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“…At these concentrations, SBA-15 results as more effective than MCM-41 in retaining hydrocarbons as it can be clearly observed in Figure 6 . Considering the long soaking time of sorbent materials in PRBs (i.e., 12 months as reported by Vignola et al [ 37 ]), SBA-15 seems more favorable than MCM-41 to maintaining its adsorption properties after prolonged water contact time as indicated by the good adsorption performances shown by hydrothermally treated samples (i.e., SBA-15_8h and SBA-15_36h).…”

Section: Resultsmentioning

confidence: 92%

Toluene Adsorption by Mesoporous Silicas with Different Textural Properties: A Model Study for VOCs Retention and Water Remediation

et al. 2020

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In this work, different mesoporous silicas were studied as potential sorbents for toluene, selected as a model molecule of aromatic organic fuel-based pollutants. Three siliceous materials with different textural and surface properties (i.e., fumed silica and mesoporous Santa Barbara Amorphous (SBA)-15 and Mobil Composition of matter (MCM)-41 materials) were considered and the effect of their physico-chemical properties on the toluene adsorption process was studied. In particular, FT-IR spectroscopy was used to qualitatively study the interactions between the toluene molecule and the surface of silicas, while volumetric adsorption analysis allowed the quantitative determination of the toluene adsorption capacity. The combined use of these techniques revealed that textural properties of the sorbents, primarily porosity, are the driving forces that control the adsorption process. Considering that, under real conditions of usage, the sorbents are soaked in water, their hydrothermal stability was also investigated and toluene adsorption by both the gas and aqueous phase on hydrothermally pre-treated samples was studied. The presence of ordered porosity, together with the different pore size distribution and the amount of silanol groups, strongly affected the adsorption process. In toluene adsorption from water, SBA-15 performed better than MCM-41.

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Section: Resultsmentioning

confidence: 92%

Toluene Adsorption by Mesoporous Silicas with Different Textural Properties: A Model Study for VOCs Retention and Water Remediation

et al. 2020

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“…[5][6][7][8] In particular, HSZ are gaining a special attention for environmental applications in permeable reactive barrier (PRB) technologies, where they were recently used as adsorbents in situations of multiple and complex contamination of aquifers. [9][10][11] In PRB conguration, their use as extruded sorbent materials and/or membranes allowed the treatment of contaminated waters in compact systems without the use of chemical agents. Additionally, with respect to Activated Carbons (ACs) they do not suffer of re risk, pore clogging, hygroscopicity and lack of regenerability when used for the removal of Volatile Organic Compounds (VOCs).…”

Section: Introductionmentioning

confidence: 99%

Competitive adsorption of VOCs from binary aqueous mixtures on zeolite ZSM-5

et al. 2016

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Adsorption equilibria of methyl tert-butyl ether (MTBE)/toluene (TOL), and 1,2-dichloroethane (DCE)/MTBE binary mixtures in aqueous solution on ZSM-5 were measured over a wide range of concentrations. In comparison with the single-component data, the loading of all of the three compounds was reduced in the presence of a second component in the mixture. The binary system was described by a competitive dual site Langmuir adsorption isotherm. The model was chosen on the basis of the results obtained from X-ray diffraction studies of the adsorbent material loaded with equimolar binary mixtures. Rietveld structure refinements provide information about the relative position of molecules inside the structure after TOL-MTBE and DCE-MTBE mixture adsorption. The short intermolecular distances between the adsorption sites of MTBE, DCE and TOL inside the zeolite framework clearly prevent the simultaneous occupancy of one site by more than one component, when these compounds are adsorbed from binary mixtures

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“…Colonization of GAC and zeolites by petroleum hydrocarbon degraders presents the potential for bioremediation within PRBs (Kubota et al 2008;Yeh et al 2010;Vignola, Bagatin, D'Aurisb, Flegoc et al 2011;Vignola, Bagatin, D'Aurisb, Massara et al 2011;Gibert et al 2013), although this is yet to be trialled in the Antarctic or Arctic. Xin et al (2013) investigated the coupling of bioaugmentation and PRBs by examining the response of Mycobacterium sp.…”

Section: Permeable Reactive Barriersmentioning

confidence: 99%

On-site and in situ remediation technologies applicable to petroleum hydrocarbon contaminated sites in the Antarctic and Arctic

Camenzuli

Freidman

2015

Polar Research

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Zeolites in a permeable reactive barrier (PRB): One-year of field experience in a refinery groundwater. Part 2: Zeolite characterization

Cited by 28 publications

References 6 publications

Toluene Adsorption by Mesoporous Silicas with Different Textural Properties: A Model Study for VOCs Retention and Water Remediation

Toluene Adsorption by Mesoporous Silicas with Different Textural Properties: A Model Study for VOCs Retention and Water Remediation

Competitive adsorption of VOCs from binary aqueous mixtures on zeolite ZSM-5

On-site and in situ remediation technologies applicable to petroleum hydrocarbon contaminated sites in the Antarctic and Arctic

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