Article
Energy & Fuels
Hoda Noveiri, Majid Nozari, Halime Almasi, Neamatollah Jaafarzadeh Haghighi Fard, Sahand Jorfi, Afshin Takdastan, Effat Abbasi Montazeri
Summary: This study aimed to investigate the biodegradation potential of n-hexadecane by three bacterial strains isolated from seawater contaminated with petroleum. The effects of various parameters on the biodegradation of n-hexadecane were examined, including surfactant type, surfactant concentration, n-hexadecane concentration, and bacterial consortium volume. The results showed that the synergy of bacterial consortium and surfactant could enhance the biodegradation of n-hexadecane, and various intermediate compounds were identified during the degradation process.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Environmental
Florent Rossi, Louis Carles, Florence Donnadieu, Isabelle Batisson, Joan Artigas
Summary: The study investigates the individual degrading behavior of bacterial strains isolated from glyphosate-degrading stream biofilms, revealing different and complementary glyphosate degradation pathways for bacteria co-existing in stream biofilms. Different bacterial strains showed variations in the degradation speed, pathway utilization, and accumulation of degradation products for glyphosate and its metabolite AMPA.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Sakshi, S. K. Singh, A. K. Haritash
Summary: This study demonstrated that the potent Gram-positive bacterial strains Kocuria flava and Rhodococcus pyridinivorans can efficiently degrade pyrene, with degradation rates of 53.8% and 56.2% within a 15-day incubation period under laboratory conditions. Enzyme activities and rate kinetics of degradation were also investigated, showing that these bacteria have the potential to play an active role in the remediation of hydrocarbon-contaminated sites. The study concluded that an increase in the initial concentration of pyrene will not compromise the bacteria's ability to degrade it, with no significant synergistic/inhibitive effects observed in the consortium.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Swati Gupta, Hagar Siebner, Gurunath Ramanathan, Zeev Ronen
Summary: The study illustrated that TNT has an adverse effect on RDX degradation by Rhodococcus strains, inhibiting the degradation process.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Younggun Yoon, Hyojung Park, Sihyun An, Jae-Hyung Ahn, Bongkyu Kim, Jaedon Shin, Ye-eun Kim, Jehyeong Yeon, Joon-hui Chung, Dayeon Kim, Min Cho
Summary: Despite the existence of numerous bioplastic-degrading bacteria, the inconsistent rate of bioplastic degradation under different cultivation conditions limits the comparison of degradation kinetics. In this study, a PCL-degrading bacterium was isolated from a plastic-contaminated landfill and its degradation kinetics were determined in a confined model system. The findings are important for measuring and predicting the degradation rates of PCL films by microorganisms in natural environments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Plant Sciences
Asma Nosheen, Razia Iqbal, Tahir Iqbal, Muhammad Waseem Mumtaz, Hamid Mukhtar
Summary: In this study, bacterial strains isolated from contaminated soils were found to have pesticide-resistant plasmids, but none showed amplification of organophosphate degrading genes. This may contribute to characterizing new types of opd genes for potential use in pesticide biodegradation in the future.
PAKISTAN JOURNAL OF BOTANY
(2021)
Article
Biotechnology & Applied Microbiology
Karthik Velusamy, Selvakumar Periyasamy, Ponnusamy Senthil Kumar, Femina C. Carolin, Thanikachalam Jayaraj, M. Gokulakrishnan, P. Keerthana
Summary: This study focuses on the biological treatment of methyl orange degradation. Three bacterial strains were isolated from textile wastewater, and Aeromonas hydrophila showed the highest degradation efficiency. The optimized conditions and end products were determined through analysis.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Multidisciplinary Sciences
Fatimah Al-Otibi, Rasha M. Al-Zahrani, Najat Marraiki
Summary: In this study, four yeast strains were isolated from different oil reservoirs and were found to have varying oxidation effects on multiple hydrocarbons. These strains also affected the physical properties of tested hydrocarbons. The amount of biosurfactants produced by the yeast strains was confirmed to be correlated to the type of tested hydrocarbons.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Mohammad Reza Samaei, Seyed Bagher Mortazavi, Bita Bakhshi, Ahmad Jonidi Jafari, Narges Shamsedini, Hamid Mehrazmay, Mohammad Ansarizadeh
Summary: This study investigated hexadecane removal in slurry bioreactors using bio-enhancement and bio-stimulation, finding that microbial consortium was more effective in removing hexadecane compared to pure bacteria, and that high salt levels inhibited biodegradation. Increasing soil-to-water ratio and initial hexadecane concentration were found to be crucial factors influencing the biodegradation rate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Mycology
Alicia Jeannette Baumann, Gabriela Veronica Diaz, Marcela Alejandra Sadanoski, Ingrid Belen Judith Szylak, Agustin Alfredo Belardita, Beatriz Del Valle Arguello, Pedro Dario Zapata
Summary: This study isolated 28 fungal strains from phytotoxic agricultural soils with intensive use of pesticides and determined their tolerance and degradation capacity to different fungicides. A. elegans LBM 239 demonstrated the highest tolerance and biodegradation capacity for carbendazim, making it a potential candidate for bioremediation of contaminated soils.
Article
Environmental Sciences
A. Lara-Moreno, E. Morillo, F. Merchan, F. Madrid, J. Villaverde
Summary: This study aimed to evaluate the potential of microbial consortia and bacterial strains isolated from a soil with a history of pesticide application to degrade Trifluralin (TFL) in soil. Different bioremediation techniques, including biostimulation, bioaugmentation, and bioavailability enhancement, were considered to increase the effectiveness of TFL degradation. The results showed that the efficiency of TFL degradation varied among different techniques and bacterial strains. The most efficient strain was identified as Arthrobacter aurescens CTFL7, and the addition of a biodegradable compound, randomly methylated cyclodextrin (RAMEB), further enhanced TFL biodegradation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Fariba Abbasi, Abooalfazl Azhdarpoor, Mohammad Reza Samaei
Summary: This study aimed to remove high concentrations of MTBE using isolated bacteria from contaminated soil with petroleum compounds in southern regions of Iran and determine their kinetics. The results showed that pure Ochrobactrum sp. and a microbial consortium consisting of resistant bacteria at high MTBE concentrations could remove MTBE> 90%.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Wenfang Chen, Wenbo Li, Tiankuo Wang, Yujuan Wen, Weiwei Shi, Wenjing Zhang, Bing Guo, Yuesuo Yang
Summary: In this study, two bacterial strains capable of reducing Cr(VI) were isolated and screened from chromium-contaminated soil. The optimum growth conditions for these bacteria to reduce Cr(VI) were determined. The addition of external carbon sources improved the efficiency of Cr removal. Using solid-phase carbon source supplements enhanced the growth and remediation efficiency of the bacteria. The two strains showed great potential for bioremediation of chromium-contaminated sites.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Oncology
Vandana Singh, Shubhi Srivastava, Namrata Singh, Suchi Srivastava, Alok Lehri, Nandita Singh
Summary: In this study, endosulfan tolerant bacterial strains were isolated from the rhizosphere of plants in a pesticide-contaminated area. The tolerance capacities and degradation potential of these strains were tested, and it was found that certain strains were able to survive high concentrations of endosulfan and degrade it to some extent.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART C-TOXICOLOGY AND CARCINOGENESIS
(2022)
Article
Green & Sustainable Science & Technology
Jazmin M. Salazar, Jessica Calle, Steeven Pereira, Paula Cordero, Carlos Matovelle
Summary: This study evaluated the nitrification potential of 12 bacterial strains isolated from native forest and pine forest in the Andes of southern Ecuador. Ten strains were identified with nitrifying potential, with Serratia and Yersinia genera showing higher nitrite oxidation capacity. The results suggest the potential use of these strains in environmental bioremediation processes for the removal of nitrogenous compounds.