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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:47 |
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Conference: Bucharest University Faculty of Physics 2021 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Study of a bioremediation technology of soils polluted with hydrocarbons and heavy metals
Authors:
Paul DOGARU(1), Cornelia DIAC(1), Cornelia NICHITA(2,3), Sanda VOINEA(1,2)
*
Affiliation:
1)University of Bucharest, Faculty of Physics, 405 Atomistilor Street, 077125, Magurele, Romania
2)University of Bucharest, Faculty of Physics, 3NanoSAE Research Center, PO Box MG 38, 077125, Bucharest-Magurele, Romania
3)National Institute for Chemical – Pharmaceutical Research and Development, 112 Vitan Avenue, 031299, Bucharest, Romania
E-mail
pauldogaruolt@gmail.com
Keywords:
bioremediation, hydrocarbons, heavy metals, biodegradable absorbent, oil spill, Sphagnum mosses, Petrolsynth, biodegradable detergent, in-situ
Abstract:
This study investigates a soil bioremediation technology by mainly using the natural biodegradable absorbent Sphagnum mosses, in combination with a series of non-toxic ecological products used as bioremediation accelerators, such as environmentally friendly biodegradable detergent LDC (based on coconut oil) and Petrolsynth (based on degradation enzymes and microorganisms). The effect of the decontamination system on soils polluted with hydrocarbons was analysed. We added several components with action in the biodegradation of hydrocarbons from the oil-spills with the intention to study the synergistic effect of the decontamination process.
The process of petroleum hydrocarbons removal from different polluted soils was investigated using UV-VIS spectroscopy. The spectra of the samples were acquired in the range of 200-800 nm and their analyse highlighted the decreasing of the absorbance values for the wavelengths corresponding to the analyzed pollutants.
The study is oriented also to monitor the heavy metals concentrations in the soil samples before and after the treatments with the biodegradable absorbent and bioremediable accelerators. An Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) is used to determine the concentration of the metals As, Cd, Cu, Fe, Pb, Co, Cr, Mn, Zn, Se, Co.
The analysis shows that the soil polluted with hydrocarbons and heavy metals treated with natural absorbent and organıc accelerators was bio-remedied and restored to its original potential of use.
The components added in the bioremediation technology of hydrocarbons contaminated soil, induce a dynamic of the bioremediation process, in the sense that they accelerate the bioremediation process of the polluted soil and shorten the necessary time for the soil’s restauration.
A great advantage of using these environmentally friendly products is that they can be used in in-situ technology for decontamination of soils polluted with hydrocarbons, with low costs and much faster results than conventional technologies.
Acknowledgement:
The support from the 3 Nano-SAE Research Centre, Faculty of Physics, University of Bucharest, are thankfully acknowledged.
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