Article
Multidisciplinary Sciences
Kallayanee Naloka, Jirakit Jaroonrunganan, Naphatsakorn Woratecha, Nichakorn Khondee, Hideaki Nojiri, Onruthai Pinyakong
Summary: This study successfully cultivated and immobilized Rhodococcus ruber S103 using low-cost media, which enhanced its biodegradation ability of crude oil. The experimental results in the mesocosm showed that biobooms could rapidly remove crude oil and maintain high degradation activity during storage.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Alberto Ferraro, Giulia Massini, Valentina Mazzurco Miritana, Antonio Panico, Ludovico Pontoni, Marco Race, Silvia Rosa, Antonella Signorini, Massimiliano Fabbricino, Francesco Pirozzi
Summary: This study proposed an innovative bioaugmentation approach for PAH contaminated soils based on a habitat-based strategy, testing two different inocula with specific functional roles. Results showed a successful bioaugmentation strategy with higher biodegradation rates and increased microbial diversity, supporting an integrated and environmentally sustainable bioremediation system.
Article
Biotechnology & Applied Microbiology
Mayada K. Kansour, Dina M. Al-Mailem
Summary: Hyper-saline evaporitic sandflats known as Sabkhas in the Gulf states are prone to oil contamination. Bioaugmentation using indigenous microorganisms can help ameliorate oil pollution in Sabkha environments. This study conducted a cross-bioaugmentation process using enriched inocula of hydrocarbonoclastic bacteria to assess oil bioremediation in artificially oil-contaminated soils from two Sabkha locations in Kuwait. The researchers found that bioaugmentation significantly enhanced oil degradation at only one location, and the dominant strain in the enriched inocula failed to colonize the bioaugmented soils. The study also revealed the oil biodegradation potential of sixteen hydrocarbonoclastic isolates under different salinity conditions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Engineering, Environmental
Anchita Kalsi, S. Mary Celin, Pallvi Bhanot, Sandeep Sahai, Jai Gopal Sharma
Summary: The study showed that using poultry waste as a carrier for explosive degrading microbes is effective for in situ remediation of explosive contaminated soils, with better results seen under saturated conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Teodor Stoichev, Ana P. Mucha, Ana Bernabeu, C. Marisa R. Almeida
Summary: This study tested a bioremediation approach with tide stimulation to degrade buried and surface oil contamination, focusing on two, three, and four rings polycyclic aromatic hydrocarbons (PAHs). Linear models showed degradation constants of individual PAHs as a simple additive function of their initial concentrations (C0), hydrophobicity, sampling layer, and treatment conditions. Oil degradation in buried layers was faster than at the surface for all PAHs and treatment conditions. Naturally-occurring microorganisms were efficient in bioremediating PAHs and were stimulated by fertilizer addition (biostimulation, BS). Bio-augmentation (BA) with a slurry of pre-stimulated native oil-degrading consortium did not enhance PAH degradation compared to BS. Degradation was more rapid for PAHs with low initial concentrations and intermediate hydrophobicity. Bioremediation of beach sand with either surface or buried crude oil is a cost-effective strategy for cleaning up various hydrocarbon families, including persistent ones like PAHs.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Environmental
Nan Zhou, Haijiao Guo, Qingxin Liu, Zuotao Zhang, Jiao Sun, Hui Wang
Summary: This study isolated a strain of anaerobic Bacillus firmus named PheN7 from contaminated soil and sludge samples, and successfully applied it in the remediation of PAH-contaminated soil under anaerobic conditions. The results showed that the synergy between PheN7 and indigenous degrading bacteria significantly improved the remediation efficiency of the soil.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Microbiology
Nedaa Ali, Majida Khanafer, Husain Al-Awadhi
Summary: A microbial consortium of hydrocarbonoclastic bacteria isolated from oil-saturated desert soil was tested for its ability to remove oil in batch cultures and in oil-polluted soil samples. The results showed that the consortium did not consume more oil than the individual species, and the rate of oil removal in the bioaugmented soil samples was similar to that in the unbioaugmented ones. The study also found that certain bacterial species, such as Arthrobacter ginsengisoli, played an important role in oil removal.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Harri Talvenmaki, Niina Saartama, Anna Haukka, Katri Lepikko, Virpi Pajunen, Milla Punkari, Guoyong Yan, Aki Sinkkonen, Tuomas Piepponen, Hannu Silvennoinen, Martin Romantschuk
Summary: A residential lot impacted by spills from a leaking light heating oil tank was successfully treated with a combination of chemical oxidation and bioremediation, resulting in a 98% reduction in oil concentration in the soil. This method, which involved Fenton's reaction-based chemical oxidation and biological treatment, achieved significant results through a series of steps.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Chongshu Li, Changzheng Cui, Jie Zhang, Jing Shen, Baoyan He, Yan Long, Jinshao Ye
Summary: Microbial remediation is an eco-friendly and promising approach for the restoration of petroleum hydrocarbon (PHC) contaminated sites. The degradation of different compounds in the soil samples collected from a petrochemical site by indigenous microbiome and exogenous microbes was evaluated. The study revealed the improvement of microbial diversity and community structure during the bioremediation process, as well as the correlation between microbes and the degradation of PHC-based pollutants.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Energy & Fuels
Abdullah Al-Sayegh, Yahya Al-Wahaibi, Sanket J. Joshi, Saif Al-Bahry, Abdulkadir Elshafie, Ali Al-Bemani
Summary: The study found that microbial communities in extremely arid environments contaminated with oil can persist and have the potential for bioremediation and biotransformation.
PETROLEUM SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Ke Shi, Yuping Yang, Yanlu Qiao, Qing Jiang, Dongle Cheng, Jianliang Xue
Summary: Bioaugmentation is an effective method for treating oil-polluted seawater with different deep-sea microorganisms, showing a higher oil degradation efficiency compared to natural restoration. The increase in relative abundance of indigenous bacterial genera, such as Cycloclasticus, Alcanivorax, Ulvibacter, and Erythrobacter, played a crucial role in crude oil degradation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Ke Shi, Yuping Yang, Yanlu Qiao, Qing Jiang, Dongle Cheng, Jianliang Xue
Summary: The study demonstrated the effectiveness of bioaugmentation technology in treating oil-polluted seawater with different deep-sea microorganisms, promoting the relative abundance of indigenous bacterial genera and enhancing crude oil degradation. Environmental factors play a crucial role in microbial changes, especially with significant impact on Cycloclasticus.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Maria Guirado, Daniel Garrido-Sanz, Oscar Pindado, Manuel Rodriguez-Rastrero, Luis Merino-Martin, Maria Jose Sierra, Olga Escolano, Rafael Rivilla, Rocio Millan
Summary: This study evaluated the efficiency of biochar combined with a bioaugmentation based on an autochthonous bacterial consortium in in-situ bioremediation, showing that this combination was significantly more effective than individual treatments in degrading diesel pollutants. The bioaugmentation-biochar combination led to over 20% diesel degradation in both pollution scenarios, accompanied by an increase in bacterial diversity, suggesting synergies for highly efficient and environmentally friendly bioremediation processes.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Environmental Sciences
G. Banet, A. K. Turaani, R. Farber, R. Armoza-Zvuloni, N. Rotem, I. Stavi, R. Cahan
Summary: The study in a hyper-arid region in Israel looked at the effects of biostimulation on crude oil degradation in two adjacent terrestrial oil spills. While biostimulation was effective in accelerating biodegradation, using biostimulated sediments from a previous spill did not enhance the process in a newer spill.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Xiaosen Li, Yakui Chen, Xianyuan Du, Jin Zheng, Diannan Lu, Zheng Liu
Summary: This study demonstrated that diesel contamination in soil can lead to a reduction in bacterial diversity and disrupt microbial communities responsible for the nitrogen cycle. The most effective method for diesel degradation was found to be the biostimulation-bioaugmentation joint process, which resulted in an increase in functional genes related to the soil nitrogen cycle in the repaired soil.
APPLIED SCIENCES-BASEL
(2021)