Article
Environmental Sciences
Muhammad Arslan, Mohamed Gamal El-Din
Summary: The study found that delayed petroleum-coke (PC) in fixed bed biofilters can be used to degrade naphthenic acids (NAs) and aromatics in oil sands process water (OSPW), effectively removing some NAs and aromatics, but the removal of oxidized NAs species was poor.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Ecology
Clemens Schauberger, Ronnie N. Glud, Bela Hausmann, Blandine Trouche, Lois Maignien, Julie Poulain, Patrick Wincker, Sophie Arnaud-Haond, Frank Wenzhoefer, Bo Thamdrup
Summary: The study found that microbial communities in Hadal trenches exhibit high similarity within each trench axis and are strongly influenced by sediment depth and redox stratification. Differences in community composition are more related to sediment depth within each trench rather than between different trenches, and not solely explained by total organic carbon content.
Article
Microbiology
Qing Li, Taiming Shen, Yingying Dong, Yuhui Liu, Jieliang Nong, Jiayuan Pan, Bei Fu, Qinglin Xie
Summary: Strain YB-6(T) is a Gram-stain-positive, anaerobic, spore-forming, rod-shaped bacterium that was isolated from activated sludge of an anaerobic tank at Weizhou marine oil mining wastewater treatment plant in Beihai, Guangxi, PR China. It grows at a temperature range of 25-45°C (optimum, 37°C), pH range of 4-12 (pH 7.0) and NaCl concentration of 0-7% w/v (0%). The strain can grow slowly in petroleum wastewater and remove organic carbon. Phylogenetic analysis indicates that strain YB-6(T) belongs to Clostridium cluster I and is closely related to Clostridium uliginosum CK55(T).
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
(2022)
Review
Biotechnology & Applied Microbiology
Amarjit Rajbongshi, Subrata Borgohain Gogoi
Summary: Microorganisms play a vital role in the petroleum industry, contributing to hydrocarbon transformation and heavy metal remediation. Anaerobic microorganisms, such as Sulphate Reducing Bacteria, are key in reservoir souring and reduction of oil quality.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Bing Yang, Mi Zhou, Yuan Meng, Keming Chen, Jie Xu, Xiangfu Huang, Yucheng Liu, Lingli Li, Lili Ma, Mingyan Chen
Summary: Chemical oxidation as a pretreatment for petroleum-contaminated soil, coupled with bioremediation, can have serious impacts on indigenous microorganisms and available nutrients. This study found that hydrogen peroxide treatments significantly promoted the removal of total petroleum hydrocarbons (TPH), especially in the initial days, and also affected the levels of dissolved nutrients. Both chemical oxidation and nutrients contribute to changes in microbial community structure and diversity. However, the long-term effects of H2O2 as a pretreatment had little impact on the soil indigenous microbial community structure and actually facilitated the continuous removal of TPH by indigenous microorganisms.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Critical Care Medicine
Judith Marin-Corral, Sergi Pascual-Guardia, Francesco Amati, Stefano Aliberti, Joan R. Masclans, Nilam Soni, Alejandro Rodriguez, Oriol Sibila, Francisco Sanz, Giovanni Sotgiu, Antonio Anzueto, Katerina Dimakou, Roberta Petrino, Ewoudt van de Garde, Marcos I. Restrepo
Summary: This study analyzed aspiration risk factors, microbiology patterns, and empiric anti-anaerobic use in patients hospitalized with CAP. Results showed that patients with ACAP or CAP/AspRF+ had similar anaerobic flora compared with those without aspiration risk factors, and Gram-negative bacteria were more prevalent in severe ACAP patients. Despite similar microbiological flora between groups, a large proportion of CAP patients received anti-anaerobic antibiotic coverage.
Article
Environmental Sciences
Hao Ling, Jinyu Hou, Mingjun Du, Yun Zhang, Wuxing Liu, Peter Christie, Yongming Luo
Summary: Surfactant-enhanced bioremediation (SEBR) is commonly used for cleaning up petroleum-contaminated soil, but its effect on microbial communities and different fractions of petroleum hydrocarbons in the field has been rarely studied. This study combined different surfactants with an oil-degrading bacterium to remediate oil-contaminated soil. The surfactant alpha olefin sulfonate (AOS) showed the highest removal efficiency of total petroleum hydrocarbons (TPHs). In a field experiment, AOS combined with the bacterium significantly improved the removal efficiency of TPHs and long-chain hydrocarbons. The study also observed changes in microbial communities during bioremediation.
Article
Engineering, Environmental
Wan Yang, Chen Cai, Donghai Yang, Xiaohu Dai
Summary: This study compared the responses of bacterial community, human pathogenic bacteria (HPB), and fecal indicator bacteria (FIB) to sludge pretreatment-anaerobic digestion (AD). The results showed that AD drove the variation of bacterial community and led to the convergence of HPB communities in pretreated sludge. FIB was found to be suitable for characterizing general pathogen removal rather than showing the real pattern of HPB. AD-related parameters played an important role in assessing pathogen inactivation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Wen-Hsing Chen, Yun-Ting Luo, Jih-Gaw Lin, Yu-Tzu Huang
Summary: This study investigated the microbial community and energy requirements of an anaerobic packed bed reactor treating low-strength synthetic wastewater under different HRTs and temperatures. The results showed that as the HRT and temperature decreased, COD removal and methane yield also decreased. The microbial community with low relative abundances of archaea and facultative bacteria played a significant role in the reactor's efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Geosciences, Multidisciplinary
Zhi Chai, Zhonghong Chen
Summary: The geochemical characteristics of oils and condensates in the deep Ordovician reservoirs of the Atan Bulge in the southwestern Tabei Uplift of the Tarim Basin were analyzed. The results indicate that the oils and condensates are primarily derived from lower Cambrian marine shale and have undergone multiple generations and charges. The petroleum likely migrated from strike-slip faults during its primary charging period, with the Manjiaer Depression and its slope serving as the primary source kitchens.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Peng Yang, Keyu Liu, Jianliang Liu, Shuang Yu, Biao Yu, Maoguo Hou, Luya Wu
Summary: The study reveals that there were two oil charge events in the Shunbei Oilfield, with the first occurring in the latest Silurian around 426 Ma, characterized by relatively low maturity oil, and the second occurring during the early Carboniferous around 330 Ma, characterized by relatively high maturity oil. This research emphasizes the importance of stable tectonic setting and excellent sealing capability of cap rocks for reservoir preservation, providing new insights for future exploration.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Agricultural Engineering
Jeong Sung Jung, Balasubramani Ravindran, Ilavenil Soundharrajan, Mukesh Kumar Awasthi, Ki Choon Choi
Summary: The addition of LAB can improve fermentation characteristics, reduce pH values, increase lactic acid production, and decrease acetic acid and butyric acid concentrations in triticale silages. By enhancing the efficiency of fermentation and improving quality, LAB treatment shows the potential to increase the dominance of desirable Lactobacillus and inhibit the growth of undesirable microbes in silages.
BIORESOURCE TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
R. L. Tyne, P. H. Barry, M. Lawson, D. J. Byrne, O. Warr, H. Xie, D. J. Hillegonds, M. Formolo, Z. M. Summers, B. Skinner, J. M. Eiler, C. J. Ballentine
Summary: Carbon capture and storage (CCS) is a crucial technology for mitigating the environmental impact of CO2 emissions, requiring an understanding of trapping and storage mechanisms for safe sequestration. Research in a CO2-EOR project suggests microbial methanogenesis may convert CO2 to CH4, potentially serving as a significant global subsurface sink for CO2.
Article
Environmental Sciences
Nuria Fernandez De Villalobos, Maria Clara Costa, Isabel Marin-Beltran
Summary: The study assessed the biodegradability of low-density polyethylene and biobased polyethylene terephthalate microplastic films by a consortium of marine bacteria, demonstrating signs of biodegradation in both types of plastics, especially in samples inoculated with bacteria.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Andressa Rezende Pereira, Nathalia Vercelli de Assis, Aline Gomes de Oliveira Paranhos, Diego Roberto Sousa Lima, Bruno Eduardo Lobo Baeta, Sergio Francisco de Aquino, Silvana de Queiroz Silva
Summary: The addition of fresh manure and ruminal fluid to anaerobic sludge can improve methane production. Next Generation Sequencing analysis showed changes in microbial community in the inoculum. The inoculum with fresh bovine manure had the highest methane production, followed by the inoculum with ruminal fluid.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Astronomy & Astrophysics
Alastair W. Tait, Siobhan A. Wilson, Andrew G. Tomkins, Jessica L. Hamilton, Emma J. Gagen, Alex I. Holman, Kliti Grice, Louisa J. Preston, David J. Paterson, Gordon Southam
Summary: Meteorites quickly become contaminated with terrestrial microorganisms upon falling to Earth, but chemical equilibrium in their environments promotes the formation of alteration minerals that can preserve contaminant microorganisms as microfossils. Studies on terrestrially weathered ordinary chondrites from Australia show that alteration minerals can sequester and preserve organic molecules and fossil microorganisms. Additionally, the distribution of redox-sensitive elements within the alteration minerals suggests that climatically or microbially facilitated element mobilization occurred during the meteorite's residency on Earth, indicating potential preservation of evidence of past life on Mars.
Article
Geology
Calum P. Fox, Jessica H. Whiteside, Paul E. Olsen, Xingqian Cui, Roger E. Summons, Erdem Idiz, Kliti Grice
Summary: High-resolution biomarker and compound-specific isotope distributions, coupled with the degradation of calcareous fossil remnants, reveal that intensive euxinia and decalcification driven by Central Atlantic magmatic province activity formed a two-pronged kill mechanism at the end-Triassic mass extinction.
Article
Biochemistry & Molecular Biology
Francis Spilsbury, Bradley McDonald, Kai Rankenburg, Noreen J. Evans, Kliti Grice, Marthe Monique Gagnon
Summary: The accumulation of metals in fish otoliths can be used as a biomarker of exposure to crude oil. Fish exposed to crude oils showed retention of Ba and Al in otoliths, while fish fed diets enriched with V, Ni, and Fe did not show any increase in metal content in otoliths. Multivariate analysis of otolith microchemistry can be used to differentiate fish exposed to different crude oils.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2022)
Article
Geochemistry & Geophysics
C. P. Fox, J. H. Whiteside, P. E. Olsen, K. Grice
Summary: This study investigates the fossil record of key sections in the southwestern UK and finds that there was little evidence of large-scale wildfires during the end-Triassic mass extinction. Instead, the region was affected by acid rain and soil erosion. The study also reveals that the existing carbon isotope anomaly records do not accurately reflect the activity of Large Igneous Provinces (LIPs), but rather the increased input of terrestrial plant material. These findings suggest that multiple factors influenced the terrestrial phase of the end-Triassic mass extinction in the southwestern UK.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Energy & Fuels
Changwei Ke, Sumei Li, Paul Greenwood, Nannan He, Kliti Grice, Tianwu Xu, Hanjing Zhang
Summary: In this study, source rocks and oil sands from the northern Dongpu Depression were analyzed to investigate the compound-specific sulfur isotope values. It was found that the samples could be separated into two groups based on their delta S-34 values, and these values showed correlations with alkylation, organic sulfur compounds, mineral content, and trace elements. The study also observed that thermal maturity influenced the delta S-34 values, with higher maturity leading to heavier values.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Danlei Wang, Marco J. L. Coolen, Erdem Idiz, Alex Holman, Peter Hopper, Charles S. Cockell, Kliti Grice
Summary: This study examined the potential biodegradation of lipid biomarkers in short-term refrigerated storage using core samples from Early Eocene consolidated marlstone sediments in the Chicxulub impact crater. The results revealed a high abundance of hydrocarbon degraders, such as Halomonas and Marinobacter, and predicted the genomic potential for anaerobic degradation of hydrocarbons. The relative abundance of these microbial taxa showed correlations with changes in bioavailable non-sulfurized compounds, suggesting ongoing biodegradation in marine sedimentary rocks during storage.
ORGANIC GEOCHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Bettina Schaefer, Lorenz Schwark, Michael E. Bottcher, Vann Smith, Marco J. L. Coolen, Kliti Grice
Summary: This study utilized biomarker and stable isotope data to analyze the depositional and environmental changes in the Chicxulub impact crater during the Early Eocene, and found elevated sea surface temperature and increasing organic matter content in the sediment sequence, potentially influenced by upwelling.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Energy & Fuels
Robert K. Nelson, Julia Forsythe, Christiane Eiserbeck, Alan G. Scarlett, Kliti Grice, Oliver C. Mullins, Christopher M. Reddy
Summary: Comprehensive two-dimensional gas chromatography coupled with high resolution time-of-flight mass spectrometry (GCxGC-HRT) was used to explore and compare the chemical complexity of hopanoids and degradation products of hopanoid parent molecules in the heavy oil rim of a large Middle East oilfield. Various useful transformation products were identified, providing important information for investigating reservoir complexities.
Article
Environmental Sciences
Francis D. Spilsbury, Alan G. Scarlett, Steven J. Rowland, Robert K. Nelson, Gemma Spaak, Kliti Grice, Marthe Monique Gagnon
Summary: In this study, the potential of using ratios of bicyclic sesquiterpane (bicyclane) chemical biomarkers to identify the source oils of exposed fish was investigated. The results showed high correlation between the ratios and the source oils, indicating that these ratios can be used to distinguish different petroleum products.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Geography, Physical
Calum P. Fox, Alex Holman, Manuel Rigo, Aisha Al Suwaidi, Kliti Grice
Summary: Polycyclic Aromatic Hydrocarbons (PAHs) are often used as proxies for wildfires in geological sediments. A study conducted in the Lombardy Basin in Italy found evidence of intense wildfire activity during a calcification crisis and a correlation between terrestrial and marine ecosystem stress.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Biology
Madison Tripp, Jasmina Wiemann, Jochen Brocks, Paul Mayer, Lorenz Schwark, Kliti Grice
Summary: Coprolites (fossilised faeces) can provide insights into extinct animal diets through the analysis of preserved biomarkers and macromolecular biosignatures. In this study, Carboniferous coprolites were found to indicate a likely carnivorous diet based on the abundance of cholesteroids and the statistical analysis of in situ Raman spectra. The exceptional preservation of biomolecular information in these coprolites was facilitated by siderite concretions.
Article
Geochemistry & Geophysics
Raphael J. Baumgartner, Bronwyn L. Teece, Birger Rasmussen, Janet Muhling, William D. A. Rickard, Bobby Pejcic, Siyu Hu, Julien Bourdet, Stefano Caruso, Martin J. Van Kranendonk, Kliti Grice
Summary: This study reports on well-preserved organic matter (OM) within black smoker-type sulfide mineralizations from a 3.24 billion years old volcanic-hosted massive sulfide deposit in northwestern Australia. Through various techniques, the researchers traced the formation process of the mineralizations and found different degrees of thermal degradation. The results suggest that ancient marine hydrothermal systems can preserve OM and provide insights into its sourcing, cycling, and deposition.
Article
Geochemistry & Geophysics
Danlei Wang, Lorenz Schwark, Wolfgang Ruebsam, Alex Holman, Michael E. Bottcher, Erdem Idiz, Marco J. L. Coolen, Kliti Grice
Summary: This study investigates sedimentary records from the Chicxulub impact crater in the Gulf of Mexico to explore the relationship between orbital-driven climate fluctuations and variations in the carbon cycle during the Early Eocene. The findings reveal a strong correlation between bulk geochemical, biomarker, and stable isotope signatures in the sediments and Milankovitch cycles, highlighting the significant role of orbital eccentricity in controlling climate and environmental oscillations. This study provides valuable insights into the direct response of organic matter composition to orbitally controlled climate change in the Early Eocene, suggesting its potential prevalence in Paleogene sediments worldwide.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
E. Lounejeva, J. A. Steadman, R. R. Large, K. Grice, P. Olin, I. Belousov
Summary: Sedimentary pyrite trace-element composition is an established proxy for determining paleo-ocean geochemistry and atmospheric oxygen concentrations through deep time. Our study focuses on fine-grained pyrite in the Hovea Member of the Kockatea Shale, examining its trace-element profiles over a span of approximately 10 million years. The results indicate the potential of sedimentary pyrite as a robust paleoenvironmental proxy, highlighting the need for further investigation in other sedimentary sequences worldwide.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Environmental Sciences
Amy Carmignani, Veronica Z. Radice, Kathryn M. McMahon, Alex I. Holman, Karen Miller, Kliti Grice, Zoe Richards
Summary: This study investigated the trophic ecology of mesophotic corals using stable isotope analyses and found species-specific differences in resource use. Some species demonstrated the ability to maintain metabolic processes under extremely low light conditions, challenging our understanding of acclimation limits for most coral species. This research provides valuable insights into coral ecosystems and deep-sea ecology.
FRONTIERS IN MARINE SCIENCE
(2023)