n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline
Biofouling of gasoline can occur during fuel storage caused by bacteria and fungi that form a biofilm at a fuel/water interface and that produce organic acids and sulfides. Fuel additives are applied to gasoline to prevent biofouling but are relatively expensive, are not always effective against bio...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
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| Series: | Fuel Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S266605202200022X |
| _version_ | 1817986709032271872 |
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| author | James G. Elkins Miguel Rodriguez, Jr Olivia N. Cannon Raynella M. Connatser Gbekeloluwa B. Oguntimein Michael D. Kass Brian H. West Brian H. Davison |
| author_facet | James G. Elkins Miguel Rodriguez, Jr Olivia N. Cannon Raynella M. Connatser Gbekeloluwa B. Oguntimein Michael D. Kass Brian H. West Brian H. Davison |
| author_sort | James G. Elkins |
| collection | DOAJ |
| description | Biofouling of gasoline can occur during fuel storage caused by bacteria and fungi that form a biofilm at a fuel/water interface and that produce organic acids and sulfides. Fuel additives are applied to gasoline to prevent biofouling but are relatively expensive, are not always effective against biofilms, and do not contribute to the combustibility of gasoline. Bio-isobutanol is an approved, certified advanced biofuel and is added up to 16% (v/v) in gasoline blends “iBut16”; n-butanol blends are currently under review. Microorganisms are inhibited by n-butanol or isobutanol when the aqueous concentration reaches >2-3% (w/v). We determined that n-butanol partitions into the aqueous phase of a model gasoline/water system reaching concentrations of 42 g/L and up to 48 g/L from gasoline blends at 10% and 24% (v/v), respectively. Likewise, isobutanol blended in gasoline at 10% and 24% (v/v) partitioned into an aqueous phase at 45 g/L and 53 g/L, respectively. Several bacterial and fungal strains that originate from fuel storage tanks, or are known to be solvent tolerant, were evaluated for their potential growth in a range of n- and isobutanol concentrations. Growth rates for all strains tested were reduced by 40–100% relative to untreated controls in n- and isobutanol concentrations of 1.5 and 2.0% (v/v). No observable growth occurred for any of the microorganisms in solvent concentrations at 3.0% (v/v). T amphiphilic and chaotropic properties of n- or isobutanol help them inhibit microbial growth and could serve as effective biocides during fuel storage as well as being valuable fuel additives. |
| first_indexed | 2024-04-14T00:12:50Z |
| format | Article |
| id | doaj.art-f5d2672020e84a5d97b717d511d04a2b |
| institution | Directory Open Access Journal |
| issn | 2666-0520 |
| language | English |
| last_indexed | 2024-04-14T00:12:50Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Fuel Communications |
| spelling | doaj.art-f5d2672020e84a5d97b717d511d04a2b2022-12-22T02:23:16ZengElsevierFuel Communications2666-05202022-09-0112100072n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasolineJames G. Elkins0Miguel Rodriguez, Jr1Olivia N. Cannon2Raynella M. Connatser3Gbekeloluwa B. Oguntimein4Michael D. Kass5Brian H. West6Brian H. Davison7Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USABiosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USABiosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USABuildings and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USADepartment of Civil Engineering, Morgan State University, Baltimore, MD, USABuildings and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USABuildings and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USABiosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA; Corresponding author.Biofouling of gasoline can occur during fuel storage caused by bacteria and fungi that form a biofilm at a fuel/water interface and that produce organic acids and sulfides. Fuel additives are applied to gasoline to prevent biofouling but are relatively expensive, are not always effective against biofilms, and do not contribute to the combustibility of gasoline. Bio-isobutanol is an approved, certified advanced biofuel and is added up to 16% (v/v) in gasoline blends “iBut16”; n-butanol blends are currently under review. Microorganisms are inhibited by n-butanol or isobutanol when the aqueous concentration reaches >2-3% (w/v). We determined that n-butanol partitions into the aqueous phase of a model gasoline/water system reaching concentrations of 42 g/L and up to 48 g/L from gasoline blends at 10% and 24% (v/v), respectively. Likewise, isobutanol blended in gasoline at 10% and 24% (v/v) partitioned into an aqueous phase at 45 g/L and 53 g/L, respectively. Several bacterial and fungal strains that originate from fuel storage tanks, or are known to be solvent tolerant, were evaluated for their potential growth in a range of n- and isobutanol concentrations. Growth rates for all strains tested were reduced by 40–100% relative to untreated controls in n- and isobutanol concentrations of 1.5 and 2.0% (v/v). No observable growth occurred for any of the microorganisms in solvent concentrations at 3.0% (v/v). T amphiphilic and chaotropic properties of n- or isobutanol help them inhibit microbial growth and could serve as effective biocides during fuel storage as well as being valuable fuel additives.http://www.sciencedirect.com/science/article/pii/S266605202200022Xn-ButanolIsobutanolInhibitionFuel storagePreservativeBiofouling |
| spellingShingle | James G. Elkins Miguel Rodriguez, Jr Olivia N. Cannon Raynella M. Connatser Gbekeloluwa B. Oguntimein Michael D. Kass Brian H. West Brian H. Davison n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline Fuel Communications n-Butanol Isobutanol Inhibition Fuel storage Preservative Biofouling |
| title | n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline |
| title_full | n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline |
| title_fullStr | n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline |
| title_full_unstemmed | n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline |
| title_short | n-Butanol or isobutanol as a value-added fuel additive to inhibit microbial degradation of stored gasoline |
| title_sort | n butanol or isobutanol as a value added fuel additive to inhibit microbial degradation of stored gasoline |
| topic | n-Butanol Isobutanol Inhibition Fuel storage Preservative Biofouling |
| url | http://www.sciencedirect.com/science/article/pii/S266605202200022X |
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