| Autor: |
Rodríguez-Calvo, Alfonso, Silva-Castro, Gloria Andrea, Olicón-Hernández, Darío Rafael, González-López, Jesús, Calvo, Concepción |
| Předmět: |
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| Zdroj: |
Applied Sciences (2076-3417); Feb2020, Vol. 10 Issue 3, p841, 17p |
| Abstrakt: |
Featured Application: The technology developed in this work based on adsorption biodegradation processes that uses meltblown polypropylene (Pad Sentec™) as a biosorbent is effective for the elimination of hydrocarbon compounds in the treatment of industrial polluted wastewater. The quality of the water obtained will allow the reuse of the treated water for different purposes, such as fire defense systems, which will allow for the implementation of the circular economy policy in the companies using these technologies. In this sense, in order to study the influence of operational variables such as flow rate, aeration or process time, the scaling of the system at the pilot plant level is planned. Wastewaters polluted with hydrocarbons are an environmental problem that has a significant impact on the natural ecosystem and on human health. Thus, the aim of this research was to develop a bioreactor sorbent technology for treating these polluted waters. A lab-scale plant composed of three 1-L bioreactors with different sorbent materials inside (meltblown polypropylene and granulated cork) was built. Wastewater to be treated was recirculated through each bioreactor for 7 days. Results showed that hydrocarbon retention rates in the three bioreactors ranged between 92.6% and 94.5% of total petroleum hydrocarbons (TPHs) and that after one simple recirculation cycle, no hydrocarbon fractions were detected by gas chromatography/Mass Spectrometry (GC/MS) in the effluent wastewater. In addition, after the wastewater treatment, the sorbent materials were extracted from the bioreactors and deposited in vessels to study the biodegradation of the retained hydrocarbons by the wastewater indigenous microbiota adhered to sorbents during the wastewater treatment. A TPH removal of 41.2% was detected after one month of Pad Sentec™ carrier treatment. Further, the shifts detected in the percentages of some hydrocarbon fractions suggested that biodegradation is at least partially involved in the hydrocarbon removal process. These results proved the efficiency of this technology for the treatment of these hydrocarbon-polluted-waters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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