Article
Engineering, Environmental
Olwen Stagg, Katherine Morris, Andy Lam, Alexandra Navrotsky, Jesus M. Velazquez, Bianca Schacherl, Tonya Vitova, Joerg Rothe, Jurij Galanzew, Anke Neumann, Paul Lythgoe, Liam Abrahamsen-Mills, Samuel Shaw
Summary: The legacy of nuclear activities has created a global issue of radioactive waste, with uranium playing a crucial role in contamination scenarios. Iron (oxyhydr)oxides could potentially act as secondary barriers to radionuclide migration, but their long-term stability and interaction with biogeochemical processes remain largely unknown. The study showed that U(VI) incorporated into goethite remained stable as U(V) even under iron-reducing conditions, indicating the potential for iron (oxyhydr)oxides to play a role in mitigating radionuclide migration in the environment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Hongyu Dang, Jessica M. Ewald, Timothy E. Mattes
Summary: This research used genome-resolved metagenomic and metatranscriptomic analyses to investigate the ecology of dehalogenating microbial communities, revealing interactions and support between Dehalococcoides and other microorganisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Ecology
Paraskevi Mara, Ying-Li Zhou, Andreas Teske, Yuki Morono, David Beaudoin, Virginia Edgcomb
Summary: Analyses of gene expression in hydrothermally heated subseafloor sediments in Guaymas Basin provide insights into physiological adaptations and metabolic potential of subsurface bacteria and archaea. The study found that RNA recovery and cell counts declined with sediment depth, but metatranscriptomes were obtained from multiple depths. The study also identified expressed genes involved in RNA modifications, DNA repair, protein maintenance, and circadian rhythm, which are crucial for microorganisms to survive and thrive in the hydrothermal subsurface.
Article
Agricultural Engineering
Marlenne Feregrino-Rivas, Blenda Ramirez-Pereda, Francisco Estrada-Godoy, Luis F. Cuesta-Zedeno, Jesus J. Rochin-Medina, Yaneth A. Bustos-Terrones, Victor A. Gonzalez-Huitron
Summary: Bioenergy production from sediment microbial fuel cells has gained special attention as a power source for environmental sensors. The quality of the sediment used in a SMFC affects the cell efficiency, and the season influences the production of electricity. Marine sediments produce more energy during the rainy season, while fluvial sediments produce more energy during the dry season.
BIOMASS & BIOENERGY
(2023)
Article
Engineering, Environmental
Lili Chen, Muhammad Wakeel, Tanveer Ul Haq, Changlun Chen, Xuemei Ren
Summary: This study investigates the UV light induced photochemical co-transformation of Ti3C2Tx MXene and U(VI), as well as the aggregation kinetics of Ti3C2Tx in the presence of various valent radioactive ions. The results demonstrate that the aggregation behavior of Ti3C2Tx induced by radioactive ions follows classical theories and UV irradiation can accelerate the degradation of Ti3C2Tx and promote the removal of U(VI).
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Xiao Yan, Xingyu Liu, Mingjiang Zhang, Jianlei Wang, Juan Zhong, Daozhi Ma, Chuiyun Tang, Xuewu Hu
Summary: Bioremediation of Cr(VI) by microorganisms involves three main mechanisms: biosorption, bioreduction, and biomineralization. Bioreduction was found to be the major contributor to the overall removal of Cr(VI), followed by biosorption and biomineralization. High-throughput sequencing data revealed that reductive microorganisms were dominant in the microbial community and their relative abundance varied significantly.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Xiaoqin Wu, Sara Gushgari-Doyle, Lauren M. Lui, Andrew J. Hendrickson, Yina Liu, Sindhu Jagadamma, Torben N. Nielsen, Nicholas B. Justice, Tuesday Simmons, Nancy J. Hess, Dominique C. Joyner, Terry C. Hazen, Adam P. Arkin, Romy Chakraborty
Summary: This study investigated the effects of subsurface geochemistry and hydrogeology on microbial composition and metabolic potential in terrestrial subsurface sediment. Results showed that subsurface microbes were highly localized and communities were rarely interconnected. Sediment geochemistry and hydrogeology play a vital role in shaping distinct microbial populations and metabolic potential in the subsurface critical zone.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Engineering, Environmental
Yan Wang, Yong Zhang, Xiaolin Liu, Sen Sun, Shiyi Qin, Jiaqi Huang, Bowei Chen
Summary: Polydopamine-coated phosphate-intercalated Mg-Fe layered double hydroxides (PDA/phos-LDH) were fabricated for capturing U(VI). The introduction of phosphate and PDA significantly increased the removal amount for U(VI) due to increased functional groups. The highest removal amount of PDA/phos-LDH reached 912.0 mg/g within 60 min, and remained as high as 81.4% after 5 repeated uses.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Luming Wang, Zaisheng Yan, Haifeng Yan, Zheng Hao, Juan Huang, Helong Jiang
Summary: Magnetic biochar was used for long-term bioremediation of PAH-contaminated sediments. The addition of magnetic biochar resulted in vertical stratification and microbial assembly patterns. Significant PAH biodegradation was observed in both surface and subsurface sediments with MagLsBC, while enhanced biodegradation was only observed in surface sediments with MagOx and MagCoAC treatments. The network interaction between microbes in MagLsBC-treated sediments was less complex and tighter compared to other treatments.
ENVIRONMENTAL POLLUTION
(2023)
Article
Geography, Physical
Hanzhi Zhang, Huayu Lu, Yali Zhou, Yingying Cui, Jing He, Hengzhi Lv, Kexin Wang, Xianyan Wang
Summary: This study reveals that a fluvial system similar to the modern upper-middle Yellow River was established around 5 million years ago, likely as a result of tectonic deformation in the middle and upper reaches of the Yellow River. The timing of integration of the upper and middle reaches of the Yellow River, previously debated, sheds light on the interplay between tectonic deformation and climate change in the region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Yue Yin, Jun Zhao, Pan Wang, Siming You, Yaoyu Zhou, Jonathan W. C. Wong, Huimin Deng, Guilan Duan, Yongguan Zhu
Summary: Reductive soil disinfestation (RSD) with potato peel and amendment with iron mineral waste residues can efficiently improve soil fertility, modify the microbial community, and benefit the sustainable production of F. thunbergii and waste management.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Cyrus Rutere, Malte Posselt, Adrian Ho, Marcus A. Horn
Summary: Metoprolol was found to be efficiently removed through microbial degradation in both oxic and anoxic conditions, with transformation products disappearing within 30 days. The presence of metoprolol had moderate effects on the bacterial community in the hyporheic zone, with some positive impacts observed on certain bacterial families. Nitrifiers were negatively impacted by metoprolol in both oxic and anoxic conditions.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Girish Choppala, Niloofar Karimian, Edward D. Burton
Summary: In this study, the Fe(II)-induced transformation of Cr(VI)-substituted schwertmannite was investigated as a function of pH and the degree of Cr(VI) substitution. The results show that higher levels of Cr(VI) substitution inhibit the transformation, partly due to the consumption of Fe(II) by reaction with Cr(VI). This study enriches our understanding of the interactions between hazardous Cr(VI) and schwertmannite in environmental and engineered systems.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Sujin Park, Sang Hyun Kim, Hyeonyong Chung, Jinsung An, Kyoungphile Nam
Summary: The mobility of arsenic in soil is influenced by the form of iron oxides present in the soil and the change in redox potential. This study investigated the changes in arsenic mobility under repetitive redox conditions and the effect of organic substrates (glucose) on this change. The results showed that the mobility of arsenic was affected by the redox conditions and the introduction of glucose inhibited arsenic re-adsorption.
Article
Engineering, Environmental
Kunyuan Liu, Dongye Zhao, Zhuofeng Hu, Ye Xiao, Chi He, Feng Jiang, Nan Zhao, Chuanfang Zhao, Weixian Zhang, Rongliang Qiu
Summary: This study prepared novel iron carbide loaded N-doped carbon nanotubes at different pyrolysis temperatures and found that unconfined Fe showed better performance in removing Cr(VI) contaminants. The key mechanism of enhanced removal was the reductive precipitation mediated by surface adsorbed and dissolved Fe2+. This study provides new insights into the mechanisms of iron confinement on the removal of metal oxyanions from groundwater and proposes a new strategy for modulating the transformation of nanoparticles from nonconfinement to confinement based on pyrolysis temperature.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Sen Yan, Yuanyuan Liu, Chongxuan Liu, Liang Shi, Jianying Shang, Huimei Shan, John Zachara, Jim Fredrickson, David Kennedy, Charles T. Resch, Christopher Thompson, Sarah Fansler
SCIENCE OF THE TOTAL ENVIRONMENT
(2016)
Article
Microbiology
Emily B. Graham, Alex R. Crump, Charles T. Resch, Sarah Fansler, Evan Arntzen, David W. Kennedy, Jim K. Fredrickson, James C. Stegen
ENVIRONMENTAL MICROBIOLOGY
(2017)
Article
Multidisciplinary Sciences
Z. Hou, W. C. Nelson, J. C. Stegen, C. J. Murray, E. Arntzen, A. R. Crump, D. W. Kennedy, M. C. Perkins, T. D. Scheibe, J. K. Fredrickson, J. M. Zachara
SCIENTIFIC REPORTS
(2017)
Article
Environmental Sciences
Emily B. Graham, Malak M. Tfaily, Alex R. Crump, Amy E. Goldman, Lisa M. Bramer, Evan Arntzen, Elvira Romero, C. Tom Resch, David W. Kennedy, James C. Stegen
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2017)
Article
Biotechnology & Applied Microbiology
Xueju Lin, David Kennedy, Aaron Peacock, James McKinley, Charles T. Resch, James Fredrickson, Allan Konopka
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2012)
Article
Microbiology
Ji-Hoon Lee, David W. Kennedy, Alice Dohnalkova, Dean A. Moore, Ponnusamy Nachimuthu, Samantha B. Reed, James K. Fredrickson
ENVIRONMENTAL MICROBIOLOGY
(2011)
Article
Microbiology
Xueju Lin, David Kennedy, Jim Fredrickson, Bruce Bjornstad, Allan Konopka
ENVIRONMENTAL MICROBIOLOGY
(2012)
Article
Engineering, Environmental
Zhi Shi, John M. Zachara, Liang Shi, Zheming Wang, Dean A. Moore, David W. Kennedy, Jim K. Fredrickson
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2012)
Article
Ecology
James C. Stegen, Xueju Lin, Jim K. Fredrickson, Xingyuan Chen, David W. Kennedy, Christopher J. Murray, Mark L. Rockhold, Allan Konopka
Article
Microbiology
Michael J. Wilkins, David W. Kennedy, Cindy J. Castelle, Erin K. Field, Ramunas Stepanauskas, James K. Fredrickson, Allan E. Konopka
Article
Environmental Sciences
Yimo Liu, Zheming Wang, Juan Liu, Caleb Levar, Marcus J. Edwards, Jerome T. Babauta, David W. Kennedy, Zhi Shi, Haluk Beyenal, Daniel R. Bond, Thomas A. Clarke, Julea N. Butt, David J. Richardson, Kevin M. Rosso, John M. Zachara, James K. Fredrickson, Liang Shi
ENVIRONMENTAL MICROBIOLOGY REPORTS
(2014)
Article
Microbiology
Juan Liu, Zheming Wang, Sara M. Belchik, Marcus J. Edwards, Chongxuan Liu, David W. Kennedy, Eric D. Merkley, Mary S. Lipton, Julea N. Butt, David J. Richardson, John M. Zachara, James K. Fredrickson, Kevin M. Rosso, Liang Shi
FRONTIERS IN MICROBIOLOGY
(2012)
Article
Microbiology
Jason Benzine, Evgenya Shelobolina, Mai Yia Xiong, David W. Kennedy, James P. McKinley, Xueju Lin, Eric E. Roden
FRONTIERS IN MICROBIOLOGY
(2013)
Article
Biotechnology & Applied Microbiology
Noah Stern, Matthew Ginder-Vogel, James C. Stegen, Evan Arntzen, David W. Kennedy, Bret R. Larget, Eric E. Roden
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2017)