Lab-scale experimental investigation concerning <i>ex-situ</i> bioremediation of petroleum hydrocarbons-contaminated soils

Micle, Valer; Sur, Ioana Monica; Criste, Adriana; Șenilă, Marin; Levei, Erika Andrea; Marinescu, Mariana; Cristorean, Carmen; Rogozan, George Calin

doi:10.1080/15320383.2018.1503229

Cited by 8 publications

(15 citation statements)

References 30 publications

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“…Results obtained at the pilot scale level are similar to those obtained in the preliminary study at laboratory scale level 38 , with a pronounced decrease in the first weeks of treatment followed by a much slower decrease in the concentration of PHC.…”

Section: Phc Concentrationsupporting

confidence: 82%

“…Starting from the results obtained previously through experiments at laboratory level 38 , the objective of the study was to determine the yield of the ex-situ bioremediation process of soils contaminated with PHC using a pilot scale treatment set that controls soil aeration duration, moisture and microorganism content. Materials and methods…”

Section: Wu Et Al (2016) Compared Treatments With Biodisposition Andmentioning

confidence: 99%

“…The development of microorganisms was observed at 600 nm were using a UV spectrophotometer (Lambda 25, Perkin-Elmer). These cultures were morphologically and tinctorially characterized using the Gram staining technique 38 .…”

Section: Isolation Of Indigenous Microorganismsmentioning

confidence: 99%

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Experimental Investigation of a Pilot-Scale Concerning Ex-Situ Bioremediation of Petroleum Hydrocarbons Contaminated Soils

Micle

Sur

2021

Preprint

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The soil samples were taken from the site of a former oil products depot from an industrial area (Romania). The soil samples taken were analyzed from a physical and chemical point of view: texture, ph, soil micronutrient content, metals concentration and petroleum hydrocarbon concentration (PHCs). The soil contaminated with TPH (4280 mgkg-1) was disposed in the form of a pile (LxWxH:3000x1400x500 mm). Experiments a pilot-scale were conducted over 12 weeks at constant pH (7.5–8), temperature (22–32oC), nutrient contents C/N/P ratio 100:10:1, soil aeration time (8 hour/day) and moisture (30%). Samples were taken every two weeks for the monitoring of the TPH and the microorganisms content. During experiment every two weeks were added microoganisms (Pseudomonas and Bacillus). Results of the analyzes regarding the concentration of PHCs were revelead a linear decrease of the concentration of PHCs after only two weeks of treatment. This decrease in concentration was also achieved in the following weeks. Following the analysis performed on the model at the pilot scale regarding the depollution process, it can be concluded that a soil contaminated with petroleum hydrocarbons can be efficiently depolluted by performing an aeration of 8 h/day, adding microorganisms Pseudomonas and Bacillus to ensure the conditions for increasing in the total number of germs (colony forming units–CFU) from 151x105 to 213x107 CFU/gram of soil, after 12 weeks of soil treatment - the depollution efficiency achieved is 83%.

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Section: Phc Concentrationsupporting

confidence: 82%

Section: Wu Et Al (2016) Compared Treatments With Biodisposition Andmentioning

confidence: 99%

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Experimental Investigation of a Pilot-Scale Concerning Ex-Situ Bioremediation of Petroleum Hydrocarbons Contaminated Soils

Micle

Sur

2021

Preprint

Self Cite

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“…The process duration usually varies between 2 weeks and 3 months and depends on the organic pollutant's type and concentration, temperature, pH, moisture, concentration of microorganisms, nutrients and oxygen, among others (Micle et al, 2018).…”

Section: Case Studymentioning

confidence: 99%

“…These details, however, were not recorded by the company and thus were not available to the authors for further analysis. In biopiles, important process parameters are process duration, organic pollutant types and concentrations, temperature, pH, moisture, concentration of microorganisms, nutrients and oxygen, grain size distribution curve and porosity (Micle et al, 2018). Yet, information on these parameters were also limited.…”

Section: Hh Removal Efficiencymentioning

confidence: 99%

Material flow analysis and heavy hydrocarbon removal in a full-scale biopile and soil washing plant in northern Italy

2020

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This study aimed to assess the mass fluxes and removal efficiencies of heavy hydrocarbons in a full-scale plant located in northern Italy. This plant receives and treats contaminated soil, soils and rocks from construction and demolition activities, incineration slags and street cleaning residues. The plant has three sections, consisting of bioremediation using biopile, a soil washing stage and a stabilization/solidification unit, which can perform independently or together with the others. The material flow analysis showed how the crisis in the construction industry changed the final destination of waste after the treatment: as the market demand for coarse material decreased, waste was sent directly to landfills for inert waste, instead of being recovered. Hydrocarbon mass fluxes showed that a considerable amount of pollutants was removed. In the period 2009–2014, the removal efficiencies of the bioremediation, the soil washing section and the entire plant were respectively 73%, 58% and 62%. The percentages of removal attained at the facility in study were sufficient to ensure the possibility of recovering the waste or disposing of it in different landfill categories, according to the national regulations.

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Remediation of Oil-contaminated Sediments Using Microemulsions: A Review

Fonte

Silva

Santos

et al. 2021

Soil and Sediment Contamination: An International Journal

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Lab-scale experimental investigation concerning ex-situ bioremediation of petroleum hydrocarbons-contaminated soils

Cited by 8 publications

References 30 publications

Experimental Investigation of a Pilot-Scale Concerning Ex-Situ Bioremediation of Petroleum Hydrocarbons Contaminated Soils

Experimental Investigation of a Pilot-Scale Concerning Ex-Situ Bioremediation of Petroleum Hydrocarbons Contaminated Soils

Material flow analysis and heavy hydrocarbon removal in a full-scale biopile and soil washing plant in northern Italy

Remediation of Oil-contaminated Sediments Using Microemulsions: A Review

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