Biofiltration of BTEX by the fungus Paecilomyces variotii

García-Peña, E.I.; Ortíz, Irmene; Hernández, Sergio; Revah, Sergio

doi:10.1016/j.ibiod.2008.03.012

Cited by 86 publications

(30 citation statements)

References 24 publications

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“…Gutiérrez-Acosta et al 2012) may effectively address this problem in future developments. The ability of individual fungal species to degrade specific VOCs also appears to be variable (see García-Peña et al 2008). Resistance to low pH, water and nutrient availability are key advantages of fungal systems over bacteria-based biofilters, and these may emerge as key constraints in future bacterial biofiltration systems (Estrada et al 2013a).…”

Section: Microbial Systemsmentioning

confidence: 99%

Reducing Indoor Air Pollutants Through Biotechnology

Torpy

Irga

Burchett

2014

Biotechnologies and Biomimetics for Civil Engineering

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Indoor environmental quality is a growing concern, as populations become more urbanised and people spend a greater proportion of their lives indoors. Volatile organic compounds outgassing from synthetic materials and carbon dioxide from human respiration have been major indoor air quality concerns. The growing use of energy-efficient recirculating ventilation solutions has led to greater accumulation of these pollutants indoors. A range of physiochemical methods have been developed to remove contaminants from indoor air, but all methods have high maintenance costs and none reduce CO 2 , which some biological systems can achieve effectively with the additional benefit of the selfsustaining capacity of biological material. Bacteria are the major organisms involved in bioremediation of VOCs, although green plants may help sustain the bacterial community and add the capacity for CO 2 reduction to a system. The main problems faced by indoor air bioremediation systems is the extremely low concentrations of VOCs present indoors and the possibility of microbial release. Simple, passive biofiltration with potted green plants may be the simplest and most effective system for indoor air cleaning, but further research into substrate types, ventilation, and the microbiology of biodegradation processes is required to reveal their ultimate potential. Purely microbial systems have potential for the bioamelioration of high concentrations of toxic gases, but not without significant maintenance costs. Despite many years of study and substantial market demand, a proven formula for indoor air bioremediation for all applications is yet to be developed.

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Section: Microbial Systemsmentioning

confidence: 99%

Reducing Indoor Air Pollutants Through Biotechnology

Torpy

Irga

Burchett

2014

Biotechnologies and Biomimetics for Civil Engineering

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“…Total carbon was measured using an automatic C/S ELTRA analyzer (ELTRA GmbH, Germany). The concentration of N-NH 4 + was determined colorimetricaly with Nessler's reagent. Redox potential and pH were measured with a Hanna pH213 pHmeter (Hanna Instruments, USA).…”

Section: Methodsmentioning

confidence: 99%

Optimization of Nitrification Process by a Bacterial Consortium in the Submerged Biofiltration System with Ceramic Bead Carrier

Muter¹

2014

J Microb Biochem Technol

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Laboratory-scale solid phase submerged system was developed to study the process of ammonium biodegradation. Ceramic beads were found to be an appropriate carrier material for the attachment of thePNN bacterial consortium (Pseudomonas sp., Nitrosomonas sp., Nitrobacter sp.) exhibiting nitrification/denitrification activity. This consortium was previously isolated from a biological activated sludge process at a fish factory wastewater treatment plant. Three organic amendments -molasses, humic acid extract, and malt extract -were used for the ceramic bead pretreatment. Molasses significantly enhanced (p<0.05) the process of bacteria attachment onto the ceramic carrier and further ammonium removal from the bulk liquid media. The addition of 0.45% fructose to the column notably enhanced ammonium oxidation, as demonstrated by more rapid formation of nitrites in the medium when compared to the sets without sugars. The results of this study could be incorporated in a larger-scale test of a biofiltration column using wastewater from a fish processing factory.

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“…Some tests with different species of filamentous fungi, including Paecilomyces variotii, were carried out using polymeric materials such as PVC, plastics, organic silicone, polyamides, rubbers, and fluoroplastics, and the results showed that there was a significant growth of microorganism on this polymers, leading to the release of aggressive metabolites which caused their degradation [9] . Furthermore, in studies to examine the biodegradation of hydrocarbons presents in oil and diesel oil, the occurrence of this fungus was observed, indicating its tolerance to contaminated environments and its potential in degrading these pollutants [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of films of low density polyethylene (LDPE), poly(hydroxibutyrate-co-valerate) (PHBV), and LDPE/PHBV (70/30) blend with Paecilomyces variotii

2015

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SbstractThe increased consumption of plastics in the world has been a subject of great concern and special attention by the scientific community. The aim is to promote development of materials that are biodegradable in a shorter time upon disposal in the environment. The most used synthetic plastics are difficult to biodegrade because they are made of long hydrocarbon chains, such as polyethylene (PE), polypropylene (PP), poly(vinyl chloride) (PVC), which are hydrophobic and resistant to the action of microbial enzymes. The use of alternative materials (natural polyesters) can minimize the harm to dumps and landfills upon their disposal, because they are susceptible to the action of microorganisms. In this study we evaluated the biodegradation/biodeterioration of PHBV (poly(3-hydroxybutyrate-co-hydroxyvalerate) films, LDPE (low density polyethylene) and the blend of LDPE/PHBV (70/30) by the fungus Paecilomyces variotii, using different methods: optical microscopy (OM), scanning electronic microscopy (SEM) and Fourier Transform Infrared spectroscopy (FTIR).

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Biofiltration of BTEX by the fungus Paecilomyces variotii

Cited by 86 publications

References 24 publications

Reducing Indoor Air Pollutants Through Biotechnology

Reducing Indoor Air Pollutants Through Biotechnology

Optimization of Nitrification Process by a Bacterial Consortium in the Submerged Biofiltration System with Ceramic Bead Carrier

Biodegradation of films of low density polyethylene (LDPE), poly(hydroxibutyrate-co-valerate) (PHBV), and LDPE/PHBV (70/30) blend with Paecilomyces variotii

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