Article
Multidisciplinary Sciences
Chunyu Tang, Yuelei Li, Jingpeng Song, Markus Antonietti, Fan Yang
Summary: The research shows that adding artificial humic acid to soils that have lost natural humic substances due to over-cultivation can effectively increase the content of dissolved organic matter and total organic carbon, while also improving nutrient availability and promoting plant growth.
Article
Chemistry, Multidisciplinary
David M. Koshy, Sindhu S. Nathan, Arun S. Asundi, Ahmed M. Abdellah, Samuel M. Dull, David A. Cullen, Drew Higgins, Zhenan Bao, Stacey F. Bent, Thomas F. Jaramillo
Summary: Research findings show that a specific electrocatalyst can catalyze the reduction of CO2 to CO both electrochemically and thermally, highlighting an analogy between catalytic phenomena in different reaction environments. Advanced characterization techniques reveal potential catalytic mechanisms and establish a generalized reaction driving-force model.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Philip M. McGuire, Valentina Dai, M. Todd Walter, Matthew C. Reid
Summary: Denitrification in woodchip bioreactors treating agricultural drainage and runoff is often limited by carbon availability, but redox fluctuations through draining and re-flooding can increase nitrate removal rates. Oxic-anoxic cycling significantly improves nitrate removal rates, but may lead to enhanced N2O emissions. In DRW reactors, there was no greater N2O accumulation, suggesting that optimizing DRW cycling can enhance nitrate removal rates.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
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
Chemistry, Multidisciplinary
Keke Kang, Sota Kakihara, Takuma Higo, Hiroshi Sampei, Koki Saegusa, Yasushi Sekine
Summary: In this study, it was found that the reverse water gas shift (RWGS) reaction can be carried out at low temperatures without equilibrium constraints using chemical looping (CL) method. With the newly developed MGa2Ox materials, almost 100% CO2 conversion was achieved at temperatures as low as 673 K, greatly reducing the cost for CO2 separation. This finding is a significant advancement for the future utilization of CO2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Keke Kang, Sota Kakihara, Takuma Higo, Hiroshi Sampei, Koki Saegusa, Yasushi Sekine
Summary: In this study, it was discovered that reverse water gas shift (RWGS) can be carried out at low temperatures without equilibrium constraints using a redox method called chemical looping (CL). Our developed MGa2Ox (M = Ni, Cu, Co) materials were able to achieve almost 100% CO2 conversion even at temperatures as low as 673 K. This finding is a significant step forward for the future effective utilization of CO2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Environmental Sciences
Gregory T. Connock, Jeremy D. Owens, Xiao-Lei Liu
Summary: Understanding the causal mechanisms of past marine deoxygenation is crucial for predicting the long-term effects of climate change on Earth's systems. In this study, researchers analyzed a comprehensive biomarker inventory from the southern proto-North Atlantic Ocean and identified an abrupt increase in primary productivity preceding Oceanic Anoxic Event 2. This increase in primary productivity destabilized carbon cycling and promoted deoxygenation, highlighting the complex interactions between organic carbon burial and microbial ecological changes.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Naoki Hashimoto, Kohsuke Mori, Kohei Asahara, Shun Shibata, Hirotaka Jida, Yasutaka Kuwahara, Hiromi Yamashita
Summary: The study found that the nanorod structure of NiOx-decorated CeO2 nanostructured catalysts exhibited superior CO2 methanation activity and CH4 selectivity, as well as exceptional durability compared to nanocube and nanooctahedron structures. The high performance of NiCeO2-NR was attributed to a large quantity of surface oxygen vacancies and the high degree of reversibility associated with the Ce4+ <-> Ce3+ redox cycle of the support.
Article
Energy & Fuels
Yang Li, Bingjun Liu, Liang Yuan, Sheng Xue, Xiaozhou Liu, Zhijian Wu, Jian Chen
Summary: This study investigates the influence of subsurface microbial invasion on coal microorganisms by infecting coal samples with soil microorganisms from different depths. The results show that the abundance and transcriptional activity of coal bacteria were significantly improved by certain soil extractions, while methane production and archaeal genes remained unchanged. Differences in the effects on bacterial diversity between coal samples treated by different soil extractions were also observed.
Article
Soil Science
Liangfeng Liu, Jianqing Tian, Hongjun Wang, Dan Xue, Xinya Huang, Ning Wu, Xingliang Xu, Meng Wang, Changhui Peng, Yanfen Wang, Huai Chen
Summary: Peatlands are important for global carbon sequestration, but they have been severely drained. This study investigated the CO2 release at the oxic-anoxic transitional (OAO) interface in drained peatlands in response to climate warming and exogenous carbon addition. The results showed that the carbon at the OAO interface was complex and the microbial activity and diversity were lowest at this interface. The CO2 emission at the OAO interface was least affected by warming, but highly sensitive to exogenous carbons. Maintaining a stable OAO interface can help reduce carbon loss in drained peatlands, but the priming effect caused by exogenous carbons needs to be addressed.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Chemistry, Physical
Parisa Ebrahimi, Anand Kumar, Majeda Khraisheh
Summary: The catalytic conversion of CO2 through the reverse water gas shift reaction over transition metal nanoparticles supported on lanthanum was evaluated. The results showed that Cu-La2O3, Ni-La2O3, and CuNi-La2O3 catalysts exhibited maximum CO2 conversions of 57%, 68%, and 74%, respectively, at 600°C, with excellent stability and low carbon deposition rate. Among them, only the 1 wt% Cu-La2O3 catalyst showed 100% CO selectivity at all temperatures, while nickel-containing catalysts exhibited selectivity for methane along with carbon monoxide. This study demonstrates the promising potential of transition metal catalysts on lanthanum oxide support for the reverse water gas shift reaction and other hydrogenation reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Soil Science
Ihsan Muhammad, Jun Wang, Upendra M. Sainju, Shaohong Zhang, Fazhu Zhao, Ahmad Khan
Summary: Cover crops enhance soil microbial community biomass and affect community structure compared to no cover crops, with responses varying depending on soil type, climatic conditions, and cover crop types. Incorporating cover crop residue into the soil can increase certain microbial parameters but decrease others.
Article
Thermodynamics
Jiachao Ge, Xiaozhou Zhang, Furqan Le-Hussain
Summary: This study investigates the role of fines migration and mineral reactions in CO2 residual trapping during sequestration. The experiments showed that fines migration and mineral reactions can increase residual CO2 saturation by causing pore plugging, impeding the displacement of CO2 by imbibing water. Additionally, CO2-saturated water imbibition was found to significantly increase residual CO2 saturation compared to water imbibition, attributed to the CO2 dissolution effect.
Article
Environmental Sciences
Byoung-Young Choi, Jinyoung Park, Baknoon Ham, Matthew F. Kirk, Man Jae Kwon
Summary: The study highlights the potential impact of CO2 injection on subsurface microbiology and carbon trapping in storage reservoirs. It shows that microbial consortia response can vary sharply along a CO2 gradient, leading to significant differences in community composition and biogeochemistry. The findings suggest that the timescale of basalt weathering might not be rapid enough to prevent significant stress following a rapid increase in CO2 abundance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Thermodynamics
Guoqiang Cao, Robert M. Handler, William L. Luyben, Yue Xiao, Chien-Hua Chen, Jonas Baltrusaitis
Summary: This study presents a detailed process modeling study on CO2 utilization via the rWGS reaction. The results show that greenhouse gas emissions are the lowest when wind-generated electricity is used. However, when considering electrification, the total design perspective needs to be carefully considered to avoid producing more greenhouse gases than conventional non-electrified scenarios.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Matthew F. Kirk, Qusheng Jin, Ben R. Haller
Article
Geosciences, Multidisciplinary
Matthew F. Kirk, Qusheng Jin, Ben R. Haller
Article
Chemistry, Analytical
Johanna M. Blake, Cherie L. De Vore, Sumant Avasarala, Abdul-Mehdi Ali, Claudia Roldan, Fenton Bowers, Michael N. Spilde, Kateryna Artyushkova, Matthew F. Kirk, Eric Peterson, Lucia Rodriguez-Freire, Jose M. Cerrato
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2017)
Article
Microbiology
Baknoon Ham, Byoung-Young Choi, Gi-Tak Chae, Matthew F. Kirk, Man Jae Kwon
FRONTIERS IN MICROBIOLOGY
(2017)
Article
Environmental Sciences
Harshad V. Kulkarni, Natalie Mladenov, Diane M. McKnight, Yan Zheng, Matthew F. Kirk, Diana R. Nemergut
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Environmental Sciences
S. E. Vero, G. L. Macpherson, P. L. Sullivan, A. E. Brookfield, J. B. Nippert, M. F. Kirk, S. Datta, P. Kempton
VADOSE ZONE JOURNAL
(2018)
Article
Biology
Kyle A. Marquart, Ben R. Haller, Janet M. Paper, Theodore M. Flynn, Maxim I. Boyanov, Ganiyat Shodunke, Colleen Gura, Qusheng Jin, Matthew F. Kirk
Article
Geosciences, Multidisciplinary
Alexandria D. Lane, Matthew F. Kirk, Donald O. Whittemore, Randy Stotler, John Hildebrand, Orrin Feril
HYDROGEOLOGY JOURNAL
(2020)
Article
Biology
Janet M. Paper, Theodore M. Flynn, Maxim Boyanov, Kenneth M. Kemner, Ben R. Haller, Kathleen Crank, AnneMarie Lower, Qusheng Jin, Matthew F. Kirk
Summary: Iron reduction and sulfate reduction in anoxic systems are influenced by pH and electron donors and acceptors, with pH having a greater impact on the ratio between the reactions than acetate supply. The extent of iron reduction is also influenced by sulfate reduction in alkaline reactors more than in acidic reactors, indicating a dependence on sulfate reduction as pH increases.
Article
Environmental Sciences
Andrea E. Brookfield, Amy T. Hansen, Pamela L. Sullivan, Jonathan A. Czuba, Matthew F. Kirk, Li Li, Michelle E. Newcomer, Grace Wilkinson
Summary: Advances in understanding and predicting freshwater algal bloom dynamics have highlighted the significant role of groundwater inputs in modulating algal growth, depending on unique local conditions. The distinct chemistry of groundwater can either support or prevent algal blooms, with key mechanisms including the redox state of the subsurface and stability of groundwater discharge. More research is needed to improve predictions of algal blooms by considering changes in land use, water management, and climate impacting groundwater dynamics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Byoung-Young Choi, Jinyoung Park, Baknoon Ham, Matthew F. Kirk, Man Jae Kwon
Summary: The study highlights the potential impact of CO2 injection on subsurface microbiology and carbon trapping in storage reservoirs. It shows that microbial consortia response can vary sharply along a CO2 gradient, leading to significant differences in community composition and biogeochemistry. The findings suggest that the timescale of basalt weathering might not be rapid enough to prevent significant stress following a rapid increase in CO2 abundance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Water Resources
Breanna Rivera Waterman, Gonzalo Alcantar, Samantha G. Thomas, Matthew F. Kirk
Summary: This study examined the variation in streamflow components and their relationships with watershed properties in different regions of Kansas, USA. The results showed that both baseflow and surface runoff increase with precipitation, but the increase in surface runoff is greater. The baseflow index decreases with increasing precipitation, indicating the limitations of infiltration on recharge/runoff partitioning. The spatial patterns of variables influencing infiltration, such as land use and soil texture, also vary with precipitation.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Environmental Sciences
Kanghyun Park, Chan Yeong Kim, Matthew F. Kirk, Gitak Chae, Man Jae Kwon
Summary: Geological carbon capture and storage (CCS) can reduce anthropogenic CO2 emissions. This study investigates the potential impacts of CO2 leakage on soils by examining the geochemistry and microbiology of a non-volcanic site where deep geogenic CO2 leaks from a cracked well casing. The study found that the high flux soils had lower pH and distinct microbial communities compared to low flux soils. These findings expand our understanding of the environmental impacts of geological CCS.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Qusheng Jin, Matthew F. Kirk
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2018)
Article
Environmental Sciences
Qusheng Jin, Matthew F. Kirk
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2018)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)