A reusable immobilization matrix for the biodegradation of phenol at 5000 mg/L

Scientific Reports
Najun LiJianmei Lu

Abstract

Bacteria-mediated degradation of toxins has been reported as a practical technique for the innocuous removal of toxic organic compounds from water. Specifically, immobilized and pre-acclimatized Pseudomonas putida has been shown to clear low levels of contaminants (less than 2000 mg/L) from wastewater, wherein the bacteria consumes toxic aromatic compounds as the only source of carbon and energy. Here we report the preparation of a high-capacity composite adsorbent as an immobilization matrix for pre-acclimatized P. putida that is capable of complete degradation of 5000 mg/L of phenol within 80 hours. The composite adsorbent, a n-Butyl acrylate (BA)-resin evenly coated on polyester fiber (PF), can quickly reduce the phenol concentration to a level that is suitable for the immobilized bacteria to start the biodegradation process. Furthermore, the composite adsorbent (PF-BA) is regenerated during the biodegradation process without any additional manipulations, therefore it is reusable. As a whole, we provide a general strategy for more efficient biodegradation for phenol, which can be generalized to other water-soluble toxic organics removal for waste water treatment.

References

Jul 2, 2002·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Gurusamy AnnaduraiDuu-Jong Lee
Dec 17, 2002·The Journal of General and Applied Microbiology·Vera L. Santos, Valter R. Linardi
May 26, 2009·Journal of Hazardous Materials·Uday F AlkaramAmmar H Al-Dujaili
Apr 14, 2010·Bioresource Technology·Yi LiPeifang Wang
Mar 1, 1994·Environmental Science & Technology·Z C HuR L Crawford

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