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Kadri T, Miri S, Robert T, Kaur Brar S, Rouissi T, LaxmanPachapur V, Lauzon JM. Pilot-scale production and in-situ application of petroleum-degrading enzyme cocktail from Alcanivorax borkumensis. CHEMOSPHERE 2022; 295:133840. [PMID: 35124086 DOI: 10.1016/j.chemosphere.2022.133840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/30/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Petroleum degrading enzymes can be used as an alternative way to improve petroleum bioremediation approaches. Alcanivorax borkumensis is an alkane-degrading bacteria that can produce petroleum degrading enzymes such as alkane hydroxylase and lipase. In this study, pilot-scale Alcanivorax borkumensis fermentation was developed for producing large volumes of petroleum degrading enzymes cocktail (∼900 L). Different process conditions, such as inoculum age 72 h and size 4% v/v, temperature 30 ± 1 °C, agitation speed at 150 rpm and, fermentation period 3 days were determined as the optimum for producing alkane hydroxylase and lipase activity. The oxygen transfer capacity was studied for obtaining better bacterial growth and higher enzyme activities in bioreactor process optimization as well as scale-up. Results showed that the maximum values of oxygen mass transfer coefficient (kLa), oxygen uptake rate (OUR), oxygen transfer rate (OTR), alkane hydroxylase, lipase, and cell count were 196.95 h-1, 0.92 mmol O2/L/h, 1.8 mmol O2/L/h, 222.49 U/mL, 325 U/mL, and 8.6 × 1010 CFU/mL, respectively. Compared with the bench-scale bioreactors, the 150 L fermenter showed a better oxygen transfer rate which affected the cell growth that doubled the number and enzymes production that increased. Then, the enzyme cocktail was used for a field test in a diesel source zone using a 5-spot well pattern. The results showed a significant reduction in concentrations of C10 - C50 (from 36% to > 99%) after one injection of enzyme cocktail, mainly for the contaminated soils located in the saturated zone of the unconfined aquifer. This study confirmed the scaling-up ofalkane-degrading enzyme production to an industrial-scale and its application for effective bioremediation of petroleum contaminated sites.
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Affiliation(s)
- Tayssir Kadri
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | - Saba Miri
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario, M3J 1P3, Canada
| | - Thomas Robert
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada; TechnoRem Inc., 4701, Rue Louis-B.-Mayer, Laval, Québec, H7P 6G5, Canada
| | - Satinder Kaur Brar
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario, M3J 1P3, Canada.
| | - Tarek Rouissi
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | | | - Jean-Marc Lauzon
- TechnoRem Inc., 4701, Rue Louis-B.-Mayer, Laval, Québec, H7P 6G5, Canada
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Lin X, Zhou H, Zeng F, Jiang L, Atakpa EO, Chen G, Zhang C, Xie Q. A biosurfactant-producing yeast Rhodotorula sp.CC01 utilizing landfill leachate as nitrogen source and its broad degradation spectra of petroleum hydrocarbons. World J Microbiol Biotechnol 2022; 38:68. [PMID: 35247078 DOI: 10.1007/s11274-022-03254-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 02/19/2022] [Indexed: 11/29/2022]
Abstract
Biosurfactants (BSs) are known for their remarkable properties, however, their commercial applications are hampered partly by the high production cost. To overcome this issue, a biosurfactant producing strain, Rhodotorula sp.CC01 was isolated using landfill leachate as nitrogen source, while olive oil was determined as the best sole carbon source. The BS produced by Rhodotorula sp.CC01 had oil displacement diameter of 19.90 ± 0.10 cm and could reduce the surface tension of water to 34.77 ± 0.63 mN/m. It was characterized as glycolipids by thin layer chromatography, FTIR spectra, and GC-MS analysis, with the critical micelle concentration of 70 mg/L. Meanwhile, the BS showed stability over a wide range of pH (2-12), salinity (0-100 g/L), and temperature (20-100 °C). During the cultivation process, BS was produced with a maximum rate of 163.33 mg L-1 h-1 and a maximum yield of 1360 mg/L at 50 h. In addition, the removal efficiency of NH4+-N reached 84.2% after 75 h cultivation with a maximum NH4+-N removal rate of 3.92 mg L-1 h-1. Moreover, Rhodotorula sp.CC01 has proven to be of great potential in remediating petroleum hydrocarbons, as revealed by chromogenic assays. Furthermore, genes related to nitrogen metabolism and glycolipid metabolism were found in this strain CC01 after annotating the genome data with KEGG database, such as narB, glycoprotein glucosyltransferase, acetyl-CoA C-acetyltransferase, LRA1, LRA3, and LRA4. The findings of this study prove a cost-effective strategy for the production of BS by yeast through the utilization of landfill leachate.
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Affiliation(s)
- Xiaoyun Lin
- Institute of Marine Biology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Hanghai Zhou
- Institute of Marine Biology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Feng Zeng
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China
| | - Lijia Jiang
- Institute of Marine Biology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Edidiong Okokon Atakpa
- Institute of Marine Biology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Gen Chen
- Institute of Marine Biology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Chunfang Zhang
- Institute of Marine Biology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China.
| | - Qinglin Xie
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China.
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Liu H, Dai L, Yao J, Mei Y, Hrynsphan D, Tatsiana S, Chen J. Efficient biotransformation of sulfide in anaerobic sequencing batch reactor by composite microbial agent: performance optimization and microbial community analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:48718-48727. [PMID: 33913111 DOI: 10.1007/s11356-021-12717-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Sulfur-containing wastewater is very common as an industrial waste, yet a high-efficiency composite microbial agent for sulfur-containing wastewater treatment is still lacking. In this work, three novel and efficient desulfurizing bacteria were isolated from the sewage treatment tank of Zhejiang Satellite Energy Co., Ltd. They were identified as Brucella melitensis (S1), Ochrobactrum oryzae (S8), and Achromobacter xylosoxidans (S9). These three strains of bacteria were responsible for the oxidative metabolism of sodium sulfide via a similar polythionate pathway, which could be expressed as follows: S2-→S2O32-/S0→SO32-→SO42-. Activated carbon, wheat bran, and diatomite at 1:1:1 ratio are used as carriers to construct a composite microbial agent containing the three bacteria. The desulfurization efficiency of 95% was predicted by response surface methodology under the following optimum conditions: the dosage of the inoculum was 3 g/L, pH 7.86, and temperature of 39 °C. Additionally, the impact resistance was studied in the anaerobic sequencing batch reactor. The removal capacity of microbial agent reached 98%. High-throughput analysis showed that composite microbial agent increased bacterial evenness and diversity, and the relative abundance of Brucellaceae increased from 5.04 to 8.79% in the reactor. In the process of industrial wastewater transformation, the transformation rate of sulfide by composite microbial agent was maintained between 70 and 81%. The composite microbial agent had potential for the treatment of sulfur-containing wastewater.
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Affiliation(s)
- Huan Liu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Luyao Dai
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Jiachao Yao
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 30021, People's Republic of China
| | - Yu Mei
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 30021, People's Republic of China
| | - Dzmitry Hrynsphan
- Research Institute of Physical and Chemical Problems, Blearusian State University, 220030, Minsk, Belarus
| | - Savitskaya Tatsiana
- Research Institute of Physical and Chemical Problems, Blearusian State University, 220030, Minsk, Belarus
| | - Jun Chen
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 30021, People's Republic of China.
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Asemoloye MD, Tosi S, Daccò C, Wang X, Xu S, Marchisio MA, Gao W, Jonathan SG, Pecoraro L. Hydrocarbon Degradation and Enzyme Activities of Aspergillus oryzae and Mucor irregularis Isolated from Nigerian Crude Oil-Polluted Sites. Microorganisms 2020; 8:E1912. [PMID: 33266344 PMCID: PMC7761101 DOI: 10.3390/microorganisms8121912] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/26/2020] [Accepted: 11/28/2020] [Indexed: 12/23/2022] Open
Abstract
Many free-living saprobic fungi are nature recruited organisms for the degradation of wastes, ranging from lignocellulose biomass to organic/inorganic chemicals, aided by their production of enzymes. In this study, fungal strains were isolated from contaminated crude-oil fields in Nigeria. The dominant fungi were selected from each site and identified as Aspergillus oryzae and Mucor irregularis based on morphological and molecular characterization, with site percentage incidences of 56.67% and 66.70%, respectively. Selected strains response/tolerance to complex hydrocarbon (used engine oil) was studied by growing them on Bushnell Haas (BH) mineral agar supplemented with the hydrocarbon at different concentrations, i.e., 5%, 10%, 15%, and 20%, with a control having dextrose. Hydrocarbon degradation potentials of these fungi were confirmed in BH broth culture filtrates pre-supplemented with 1% engine oil after 15 days of incubation using GC/MS. In addition, the presence of putative enzymes, laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) was confirmed in culture filtrates using appropriate substrates. The analyzed fungi grew in hydrocarbon supplemented medium with no other carbon source and exhibited 39.40% and 45.85% dose inhibition response (DIR) respectively at 20% hydrocarbon concentration. An enzyme activity test revealed that these two fungi produced more Lac than MnP and LiP. It was also observed through the GC/MS analyses that while A. oryzae acted on all hydrocarbon components in the used engine oil, M. irregularis only degraded the long-chain hydrocarbons and BTEX. This study confirms that A. oryzae and M. irregularis have the potential to be exploited in the bio-treatment and removal of hydrocarbons from polluted soils.
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Affiliation(s)
- Michael Dare Asemoloye
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; (M.D.A.); (X.W.); (S.X.); (W.G.)
| | - Solveig Tosi
- Laboratory of Mycology, Department of Earth and Environmental Sciences, University of Pavia, Via S. Epifanio 14, 27100 Pavia, Italy; (S.T.); (C.D.)
| | - Chiara Daccò
- Laboratory of Mycology, Department of Earth and Environmental Sciences, University of Pavia, Via S. Epifanio 14, 27100 Pavia, Italy; (S.T.); (C.D.)
| | - Xiao Wang
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; (M.D.A.); (X.W.); (S.X.); (W.G.)
| | - Shihan Xu
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; (M.D.A.); (X.W.); (S.X.); (W.G.)
| | - Mario Andrea Marchisio
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; (M.D.A.); (X.W.); (S.X.); (W.G.)
| | - Wenyuan Gao
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; (M.D.A.); (X.W.); (S.X.); (W.G.)
| | - Segun Gbolagade Jonathan
- Mycology & Applied Microbiology Group, Department of Botany, University of Ibadan, Ibadan 200284, Oyo State, Nigeria;
| | - Lorenzo Pecoraro
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; (M.D.A.); (X.W.); (S.X.); (W.G.)
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Leoncio L, de Almeida M, Silva M, Oliveira OMC, Moreira ÍTA, Lima DF. Evaluation of accelerated biodegradation of oil-SPM aggregates (OSAs). MARINE POLLUTION BULLETIN 2020; 152:110893. [PMID: 32479280 DOI: 10.1016/j.marpolbul.2020.110893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 12/18/2019] [Accepted: 01/07/2020] [Indexed: 06/11/2023]
Abstract
The studies of the formation of oil-Suspended Particulate Matter (SPM) aggregates (OSAs) have advanced significantly in the scientific community, however there is a need to accelerate oil biodegradation that was dispersed by the formation of OSAs. The present research presents a pioneering character regarding the addition of nutrients as biostimulus for autochthonous hydrocarboclastic bacteria in the biodegradation of Total Petroleum Hydrocarbons (TPH) dispersed by the formation of OSAs. Water aliquots were taken over 60 days from eight bioreactors to perform ionic species analysis, pH, salinity and temperature monitoring, liquid/liquid extraction, serial dilution methodology and filter membrane. TPH quantification was performed on the gas chromatograph with a flame ionisation detector (GC-FID). The addition of nutrients contributed positively to the rate and extent of biodegradation of TPH in association with field-collected SPM. The best result found was with the lowest nutrient concentration (Bio 1) with an average of 98.65% of TPH reduction.
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Affiliation(s)
- Lua Leoncio
- Nucleo de Estudos Ambientais - NEA, Institute of Geosciences, Federal University of Bahia, Campus Ondina, R. Barão de Jeremoabo, s.n., 40170-290 Salvador, BA, Brazil.
| | - Marcos de Almeida
- Federal University of Pernambuco, Av. da Arquitetura, s.n., 50740-540 Recife, PE, Brazil
| | - Marcio Silva
- Nucleo de Estudos Ambientais - NEA, Institute of Geosciences, Federal University of Bahia, Campus Ondina, R. Barão de Jeremoabo, s.n., 40170-290 Salvador, BA, Brazil
| | - Olívia M C Oliveira
- Nucleo de Estudos Ambientais - NEA, Institute of Geosciences, Federal University of Bahia, Campus Ondina, R. Barão de Jeremoabo, s.n., 40170-290 Salvador, BA, Brazil.
| | - Ícaro T A Moreira
- Department of Environmental Engineering, Polytechnic School, Federal University of Bahia, R. Prof. Aristídes Novis, s.n., 40210-630 Salvador, BA, Brazil
| | - Danúsia Ferreira Lima
- LEPETRO, Institute of Geosciences, Federal University of Bahia, Campus Ondina, R. Barão de Jeremoabo, s.n., 40170-290 Salvador, BA, Brazil
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Ryu Y, Lee KE, Cha IT, Park W. Optimization of bacterial sporulation using economic nutrient for self-healing concrete. J Microbiol 2020; 58:288-296. [PMID: 32103443 DOI: 10.1007/s12275-020-9580-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/14/2020] [Accepted: 01/29/2020] [Indexed: 12/12/2022]
Abstract
The use of heat- and alkali-resistant bacteria is essential for the biological repair of damaged concrete. Lysinibacillus boronitolerans YS11 was isolated from the rhizosphere of Miscanthus sacchariflorus. The increased pH in the urea-minus condition during the growth of the YS11 strain promoted calcium carbonate (CaCO3) formation. To identify the optimum medium that promoted the growth of the YS11 strain, a Plackett-Burman design was conducted for the screening process. Consequently, malt powder, rice bran, (NH4)2SO4, and corn syrup were chosen to enhance YS11 growth. The optimization of these four useful factors was carried out using a central composite design. To obtain higher survivability in mortar, the sporulation process is essential, and additional factors such as Mn2+, Fe2+, and Ca2+ were found to contribute to sporulation. A mixture of L. boronitolerans YS11 spore powder, cement, paste, sand, yeast extract, calcium lactate, and water showed a healing effect on a 0.3 mm mortar crack in 7 days. Furthermore, calcium carbonate precipitation was observed over the crack surface. Thus, we confirmed that mortar treated with YS11 spore powder was effective in healing micro-cracks in concrete.
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Affiliation(s)
- Youngung Ryu
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Sciences and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Ki-Eun Lee
- National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - In-Tae Cha
- National Institute of Biological Resources, Incheon, 22689, Republic of Korea
| | - Woojun Park
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Sciences and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
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Yang R, Zhang G, Li S, Moazeni F, Li Y, Wu Y, Zhang W, Chen T, Liu G, Zhang B, Wu X. Degradation of crude oil by mixed cultures of bacteria isolated from the Qinghai-Tibet plateau and comparative analysis of metabolic mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:1834-1847. [PMID: 30456621 DOI: 10.1007/s11356-018-3718-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 11/08/2018] [Indexed: 06/09/2023]
Abstract
This study investigates the biodegradation of crude oil by a mixed culture of bacteria isolated from the Qinghai-Tibet plateau using gas chromatography-mass spectrometer (GC-MS) and the gravimetric method. The results showed that a mixed culture has a stronger ability to degrade hydrocarbon than pure cultures. Once both Nocardia soli Y48 and Rhodococcus erythropolis YF28-1 (8) were present in a culture, the culture demonstrated the highest crude oil removal efficiency of almost 100% after 10 days of incubation at 20 °C. Moreover, further analysis of the degradation mechanisms used by the above strains, which revealed utilization of different n-alkane substrates, indicated the diversity of evolution and variations in different strains, as well as the importance of multiple metabolic mechanisms for alkane degradation. Therefore, it is concluded that a mixed culture of Y48 and YF28-1 (8) strains can provide a more effective method for bioremediation of hydrocarbon-contaminated soil in permafrost regions.
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Affiliation(s)
- Ruiqi Yang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Gaosen Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Shiweng Li
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Faegheh Moazeni
- School of Science Engineering and Technology, Penn State Harrisburg University, Middletown, PA, 17057, USA
| | - Yunshi Li
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Yongna Wu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049, China
| | - Wei Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Tuo Chen
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China.
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Guangxiu Liu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China.
| | - Binglin Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
| | - Xiukun Wu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China
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Kadri T, Magdouli S, Rouissi T, Brar SK, Daghrir R, Lauzon JM. Bench-scale production of enzymes from the hydrocarbonoclastic bacteria Alcanivorax borkumensis and biodegradation tests. J Biotechnol 2018; 283:105-114. [PMID: 30071247 DOI: 10.1016/j.jbiotec.2018.07.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/24/2018] [Accepted: 07/29/2018] [Indexed: 11/30/2022]
Abstract
This study investigates motor oil (3, 5, 7.5 and 10% (v v-1)) as a sole carbon source for the production of Alcanivorax borkumensis in shake flasks and a 5 L bench-scale fermenter in comparison to the standard media. Shake flask studies showed a significant and higher cell growth (p=0.000038), lipase (p = 0.006900) and alkane hydroxylase production (p = 0.000921) by Alcanivorax borkumensis when motor oil was used as the substrate. Based on Tukey post-hoc tests, 5% motor oil concentration was selected as the optimal substrate concentration. The 5 L fermenter experiments conducted using motor oil at 5% (v v-1) concentration, under controlled conditions exhibited significant and higher alkane hydroxylase and lipase activities (55.6 U mL-1 (p = 0.018418) and 208.30 U mL-1 (p = 0.020087), respectively) as compared with those of motor oil at 3% (v v-1) and n-hexadecane at 3% (v v-1) concentration which was used as control. Cell growth was significantly higher when motor oil (3 or 5%) was used as a substrate (p = 0.024705). Enzymatic degradation tested on two different polycyclic aromatic hydrocarbons (PAHs) contaminated groundwaters showed 37.4% removal after 5 days with a degradation rate of 196.6 ppb day-1 and 82.8% removal after 10 days with a degradation rate of 217.54 ppb day-1 for the 1st site and an almost complete biodegradation with 95% removal and 499.02 ppb day-1 removal rate after only 5 days for the 2nd site.
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Affiliation(s)
- Tayssir Kadri
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | - Sara Magdouli
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | - Tarek Rouissi
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | - Satinder Kaur Brar
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada.
| | - Rimeh Daghrir
- 696, avenue Sainte Croix, Montréal, Québec, H4L 3Y2, Canada
| | - Jean-Marc Lauzon
- TechnoRem Inc., 4701, rue Louis-B.-Mayer, Laval, Québec, H7P 6G5, Canada
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Yuan X, Zhang X, Chen X, Kong D, Liu X, Shen S. Synergistic degradation of crude oil by indigenous bacterial consortium and exogenous fungus Scedosporium boydii. BIORESOURCE TECHNOLOGY 2018; 264:190-197. [PMID: 29803810 DOI: 10.1016/j.biortech.2018.05.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/17/2018] [Accepted: 05/18/2018] [Indexed: 06/08/2023]
Abstract
The purpose of this study was to investigate the potential of defined co-culture of indigenous bacterial consortium and exogenous fungus Scedosporium boydii for biodegradation of crude oil. After 7 days of incubation, residual oil, n-alkanes and aromatic fraction were analyzed. The degradation rate of crude oil was increased from 61.06% to 81.45% by the defined co-culture according to the 3:1 inoculation ratio of bacteria to fungi. The microbial activity was enhanced markedly and the formation of biofilms was accelerated after suitable inoculation of Scedosporium boydii. High throughput analysis showed that bacterial evenness and diversity were increased and the relative abundance of Paraburkholderia tropica was increased observably from 7.67% to 56.13% in the defined co-culture. These results indicated that synergistic degradation of crude oil in the bacteria-fungi consortium may be advantageous for bioremediation of petroleum-contaminated site.
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Affiliation(s)
- Xiaoyu Yuan
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xinying Zhang
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xueping Chen
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Dewen Kong
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xiaoyan Liu
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Siyuan Shen
- Laboratory of Environmental Remediation, College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
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10
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Mahmoud GAE, Bagy MMK. Microbial Degradation of Petroleum Hydrocarbons. MICROBIAL ACTION ON HYDROCARBONS 2018:299-320. [DOI: 10.1007/978-981-13-1840-5_12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Liu Y, Li C, Huang L, He Y, Zhao T, Han B, Jia X. Combination of a crude oil-degrading bacterial consortium under the guidance of strain tolerance and a pilot-scale degradation test. Chin J Chem Eng 2017. [DOI: 10.1016/j.cjche.2017.02.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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