Glycerol-enhanced microwave heating for ultra-rapid effective remediation of marine sediments highly contaminated with hydrocarbons

Falciglia, Pietro P.; Guidi, Guido De; Catalfo, Alfio; Finocchiaro, Guglielmo; Farina, Marcello; Liali, Maria; Lorenzano, Giuseppe; Valastro, Gaetano; Vagliasindi, Federico G.A.

doi:10.1016/j.seppur.2017.07.066

Cited by 11 publications

(3 citation statements)

References 55 publications

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“…In the materials and metallurgy research, microwave assisted synthesis of catalysts, electrodes, and optical devices [9][10][11] have proven to be efficient with some special effects. Moreover, in the organic compound extraction and separation, in medical, food and energy fields, the microwave assistance method has already been practically used [12][13][14]. In hydrometallurgical leaching of nonferrous, lanthanum and noble metals, the dielectric properties have also been reported to have a pronounced effect on the microwave heating pattern [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Microwave Intensified Vanadium Bearing-High Carbonaceous Shale Acid Extraction Process

et al. 2018

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Abstract:The microwave assisted leaching of the vanadium bearing-high carbonaceous shale process was investigated using surface response methodology (RSM) based on Box-Behnken design (BBD). The effect of important factors such as CaF 2 usage, H 2 SO 4 concentration, leaching time and microwave power, as well as the interactive coefficients, the signification of the model and factors were analyzed. With the condition of 9.8 wt % CaF 2 , 23.0 vol % H 2 SO 4 , 170.6 min and 350 W, the actual values of vanadium (V) leaching efficiency in microwave heating (MH) and conventional heating (CH) were 85.43% and 79.64%, which agreed well with the predicted values. Meanwhile, the influence order of the factors in MH and CH was CaF 2 dosage > H 2 SO 4 concentration > leaching time. Microwave was an efficacious impetus for V extraction, but the microwave power itself was not a significant factor when the temperature of leaching system was high enough. The further characterization of mineral components before and after leaching confirmed that the prior dissolving of muscovite and pyrite in MH was intensified, while both minerals were in fine grains and filled with black carbon. The selective heating of carbon and pyrite sequenced the large temperature gradient between solids and liquids, which accelerated the dissolving reaction of muscovite with CaF 2 present in MH condition.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Microwave Intensified Vanadium Bearing-High Carbonaceous Shale Acid Extraction Process

et al. 2018

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“…The results showed that the addition of glycerol to sediments largely promoted MW absorption performance, which corresponded to a large temperature rise (∼120 °C) with a maximum sediment temperature of 342 °C. 138 The main advantage of the MW–glycerol 3 treatment is the possibility of obtaining a very fast and efficient decontamination process, potentially reducing energy costs, also in the case of a very high initial concentration of hydrocarbons, without producing additional by-products (as far as only to MW), which in some cases can be toxic. This is due to the use of a “green” and biodegradable enhancing agent and the absence of “hot spots” reported as the cause of better MW system performance when powdered or solid enhancer materials such as GACs, PACs, graphite or CNTs are employed.…”

Section: Microwave-assisted Catalysis Using Glycerol As An Additivementioning

confidence: 99%

Glycerol and microwave-assisted catalysis: recent progress in batch and flow devices

Costas

Oliveira

Esposito

et al. 2023

Sustainable Energy Fuels

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“…For the contaminated soil with weak microwave absorption capacity, the most effective and easy approach to overcome this problem is to add microwave-absorbing materials and hence increase the remediation temperature of contaminated soils. Falciglia et al 21 showed that 99% of the total petroleum hydrocarbons in hydrocarbon-contaminated sediments could be removed at 650 W for 15 min, and the treatment time was reduced to 3 min by the addition of 10 wt % glycerol. Sivagami et al 22 claimed that the removal efficiency of TPHs was 91.18% at 600 W for 60 min with the addition of 2.5 wt % spent graphite.…”

Section: Introductionmentioning

confidence: 99%

Microwave Heating Remediation of Light and Heavy Crude Oil-Contaminated Soil

Chen

Zhang

et al. 2023

Energy Fuels

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The remediation of petroleum hydrocarbon-polluted soil with microwave irradiation is a promising technology due to its high decontamination efficiency and low energy consumption. The current study is to experimentally investigate the performance of microwave heating remediation of light and heavy crude oil-contaminated soil in a lab-scale apparatus. The results show that 98.95 and 96.39% of total petroleum hydrocarbons (TPHs) in light and heavy crude oil-contaminated soil can be removed in 15 and 20 min at 1000 W, while the residual TPHs constitute around 143.2 and 401.4 mg/kg, respectively. This indicates that the removal of light crude oil from soil is much more efficient and consumes less energy due to the difference in removing behaviors for different fractions. The major removal of C10−C16, C16−C22, and C22−C40 fractions at 200, 300, and 400 °C reveals that the removal of both small and large molecular fractions is promoted by microwave irradiation as it occurs at a temperature far below their boiling points. Moreover, soil organic matter (SOM) in light and heavy crude oilcontaminated soil is maintained at a moderate level (i.e., 19 and 21.7 g/kg at 400 °C) after microwave treatment, giving an opportunity for soil reusability.

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Glycerol-enhanced microwave heating for ultra-rapid effective remediation of marine sediments highly contaminated with hydrocarbons

Cited by 11 publications

References 55 publications

Evaluation of Microwave Intensified Vanadium Bearing-High Carbonaceous Shale Acid Extraction Process

Evaluation of Microwave Intensified Vanadium Bearing-High Carbonaceous Shale Acid Extraction Process

Glycerol and microwave-assisted catalysis: recent progress in batch and flow devices

Microwave Heating Remediation of Light and Heavy Crude Oil-Contaminated Soil

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