Optimization, modeling and its conformity with the reality of physico-chemical and microbial processes of petroleum hydrocarbons reduction in soil: a case study of Tehran oil refinery

Farahani, Maryam; Mahmoudi, Dariush

doi:10.1007/s12665-018-7512-5

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…This was demonstrated by the low MAE values (≤ 11%) obtained for the deepest water table positions. These error values are consistent with the relative error reported by Farahani and Mahmoudi [42]. They used HYDRUS 1D to model the changes of PAHs concentration in soil columns and verify its correlation with field data.…”

Section: Discussionsupporting

confidence: 88%

“…Valsala and Govindarajan [41] carried out a numerical investigation into the interaction of various BTEX transport processes in groundwater. Farahani and Mahmoudi [42] used HYDRUS software to solve environmental problems associated with hydrocarbons contamination. Most of the existing works on the subject simulate BTEX transport through the direct and total dissolution from the pollutant source or NALP.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of groundwater contamination risk by BTEX from residual fuel soil phase

2021

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The aim of this work is to assess the risk of groundwater contamination associated with BTEX dissolution from fuels as a residual phase. Numerical simulations of sixty scenarios were carried out with the software HYDRUS 2D/3D. Groundwater contamination risk was analyzed given the combination of different porous media textures (silt loam, sandy loam and clay), water fluxes (0.5%, 1% or 3% Rainfall), water table depths (1.5, 2.5, 5 or 8 m below ground surface) and biodegradation rate (active or null). Risk was calculated comparing leachate concentrations to the aquifer and limits established by an international guideline for human drinking water. In all cases, benzene and toluene had the highest mobility in the dissolved phase. Contrary, xylene and ethylbenzene tended to concentrate close to the source zone. These two compounds predominantly concentrated in the solid phase. Calculated risk was proportional to the water flux rate and inversely proportional to the unsaturated thickness. Without biodegradation, in fine-grained sediments risk was very high for shallow aquifers (> 1.5 m depth) and moderate or low for deeper aquifers. However, in sandy loam sediments risk was classified as very high for aquifers up to 8 m deep. When biodegradation was considered, leached concentrations were greatly reduced in the three textures. BTEX concentration in Bahía Blanca City´s aquifer showed acceptable agreement with simulated scenarios. The most sensitive parameters to model results were biodegradation > foc > water table depth > Ks. This study is important for assessing the risks and developing management strategies for fuel contaminated sites.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Assessment of groundwater contamination risk by BTEX from residual fuel soil phase

2021

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“…As high-risk solid waste, oily sludge contains other harmful substances such as polycyclic aromatic hydrocarbons (PAHs) and PHCs [4,48,[58][59][60][61], mainly including chrysene, pyrene, anthracene and fluorine [62]. PAHs is highly toxic with strong carcinogenicity, which can cause human cancer through breathing or direct skin contact.…”

Section: Formation and Release Of Nitrogen/sulfur Compoundsmentioning

confidence: 99%

Application and development of pyrolysis technology in petroleum oily sludge treatment

Wang

Gong

Wang

et al. 2020

Environmental Engineering Research

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With the enhancement of public awareness of environmental protection, the harm of oily sludge has gradually been paid attention to. As a kind of dangerous solid waste, the arbitrary disposal of oily sludge will cause quite serious harm to both the environment and human beings. Research on the treatment methods of oily sludge has become a hot spot recently. At present, treatment methods of oily sludge are various, mainly including pyrolysis, direct combustion, freeze-thaw treatment, biological treatment, solvent extraction, thermochemical cleaning, ultrasound-assisted treatment or joint technology, etc. Based on the consideration of economic benefits, social benefits and treatment difficulties, pyrolysis has been considered to be the most appropriate method for oily sludge treatment. Syngas, liquid oil and char can be obtained from pyrolysis of oily sludge, which can meet different needs. In this paper, the pyrolysis technology of oily sludge is reported in detail, including pyrolysis methods, operational parameters and pyrolysis products of oily sludge. On the basis, the advantages and limitations of oily sludge pyrolysis technology are discussed, together with the report of feasibility of pyrolysis technology of oily sludge. Moreover, the development trend of pyrolysis technology of oily sludge is prospected for the future work.

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Combination of plant-growth-promoting and fluoranthene-degrading microbes enhances phytoremediation efficiency in the ryegrass rhizosphere

Zhang

Sun

et al. 2020

Environ Sci Pollut Res

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Optimization, modeling and its conformity with the reality of physico-chemical and microbial processes of petroleum hydrocarbons reduction in soil: a case study of Tehran oil refinery

Cited by 6 publications

References 13 publications

Assessment of groundwater contamination risk by BTEX from residual fuel soil phase

Assessment of groundwater contamination risk by BTEX from residual fuel soil phase

Application and development of pyrolysis technology in petroleum oily sludge treatment

Combination of plant-growth-promoting and fluoranthene-degrading microbes enhances phytoremediation efficiency in the ryegrass rhizosphere

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