Article
Engineering, Environmental
Guoguang Wang, Yu Liu, Xu Wang, Xu Dong, Na Jiang, Haixia Wang
Summary: This study investigated the anaerobic microbial degradation of BDE-47 and BDE-153 using dual carbon-bromine isotope analysis, revealing stepwise debromination as the main degradation pathway with similar carbon and bromine isotope enrichment factors. The results indicated that the degradation followed nucleophilic aromatic substitution mechanism, with the rate-determining step being the cleavage of the C-Br bond.
Article
Environmental Sciences
Mengren Li, Min Hu, Jennifer Walker, Pan Gao, Xin Fang, Nan Xu, Yanhong Qin, Liping Zhou, Kexin Liu, Claudia Czimczik, Xiaomei Xu
Summary: Carbonaceous aerosols, comprising mainly of carbonaceous sources like biogenic, liquid fossil, and coal, were analyzed using dual-carbon isotope method to identify their contributions in different types of sites with varying pollution levels. The study discussed the seasonal variations of carbonaceous aerosol sources in urban Beijing, with biogenic and biomass sources dominating in the background site due to long-range transport. The results provide scientific support for air pollution prevention and control strategies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Nutrition & Dietetics
R. J. Scott Lacombe, Richard P. Bazinet
Summary: Differences in carbon assimilation pathways among plants lead to variations in carbon isotope ratios in foods and animal products, which have been underappreciated in nutrition. Recent studies have shown that carbon isotope ratio analysis can serve as an effective tool for evaluating nutritional biomarker status, not only for sugar and animal protein intake, but also for studying fatty acid metabolism.
Article
Chemistry, Analytical
Caiming Tang, Jianhua Tan, Caixing Tang, Deyun Liu, Peilin Zhang, Xianzhi Peng
Summary: This study measured compound-specific chlorine isotopologue distributions of POCs using gas chromatography coupled to high-resolution mass spectrometry for source identification. The Delta A values and Delta A patterns were discernible for POCs from different sources.
ANALYTICAL CHEMISTRY
(2021)
Article
Food Science & Technology
Micha Horacek, Nives Ogrinc, Dana Alina Magdas, Daniel Wunderlin, Sanja Sucur, Vesna Maras, Ana Misurovic, Reinhard Eder, Franc Cus, Stefan Wyhlidal, Wolfgang Papesch
Summary: This study compared the stable isotope composition of oxygen and carbon of wines from four Central and Southeastern European countries and from Argentina. Similar trends were observed for wines from Austria, Slovenia, and Romania, while Montenegrin and Argentinean samples showed different results. The speculation is that weather development is similar for the first three countries due to their geographical proximity, while Montenegro and Argentina are influenced by different factors.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2021)
Article
Environmental Sciences
Hang Vo-Minh Nguyen, Doo-Hee Lee, Han-Saem Lee, Hyun-Sang Shin
Summary: This study investigates the transformation of tetracycline using manganese oxides (MnO2) in aqueous solution. The research finds that tetracycline removal follows a pseudo-second-order reaction model and the removal efficiency varies with pH and the presence of humic acid. Liquid chromatography-mass spectrometry/mass spectrometry results identify the main transformation products and highlight the influence of humic acid on the toxicity of the products.
ENVIRONMENTAL POLLUTION
(2023)
Article
Geochemistry & Geophysics
Anna L. Harrison, Pascale Benezeth, Jacques Schott, Eric H. Oelkers, Vasileios Mavromatis
Summary: The experiment showed that at 25 and 35 degrees Celsius, nesquehonite transforms into dypingite through dissolution and re-precipitation, leading to significant exchange of Mg and C between solid and fluid. During the transformation, the initial isotopic composition of the solid phase was overwritten, indicating that isotopic equilibrium likely occurred between dypingite and fluid.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Andrew T. Smith, Kuangyu Shen, Zaili Hou, Songshan Zeng, Jing Jin, Chenjun Ning, Yufei Zhao, Luyi Sun
Summary: An adaptable stimuli responsive system based on defective graphitic carbon nitride/polyvinyl alcohol composite is proposed, offering applications in visible light responsive rewritable paper and transparent mechanochromic films.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Katlego E. Raseruthe, Thabo Matthews, Sandile S. Gwebu, Kriveshni Pillay, Nobanathi W. Maxakato
Summary: Palladium-based catalysts supported on carbon nanotubes and carbon nanodots have shown promising potential in efficiently oxidizing ethylene glycol, with Pd/CNT catalyst demonstrating greater stability and resistance to poisoning by carbon monoxide intermediates during the oxidation process.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Food Science & Technology
Concetta Pironti, Maria Ricciardi, Oriana Motta, Federica Camin, Luana Bontempo, Antonio Proto
Summary: The study evaluated the feasibility of using C-13-NMR spectroscopy to determine the carbon stable isotope ratio of small organic molecules like vanillin, proving it to be a valuable alternative method. By comparing results from different analysis methods, the origin of vanillin can be accurately identified to ensure its quality.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Environmental Sciences
Song Jun Guo
Summary: Through simulation reactions, it was found that there were no carbon isotopic fractionation effects in carbonyls with cysteamine. Carbon isotopic variations of formaldehyde, acetaldehyde, and acetone in roadside air of Nanning were measured, showing enrichment in the early afternoon. The measured delta C-13 values indirectly confirmed the positive photo-oxidation production of hydrocarbons in the air.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Environmental Sciences
Fan Jiang, Junwen Liu, Zhineng Cheng, Ping Ding, Yuanqian Xu, Zheng Zong, Sanyuan Zhu, Shengzhen Zhou, Caiqing Yan, Zhisheng Zhang, Junyu Zheng, Chongguo Tian, Jun Li, Gan Zhang
Summary: This study used dual-carbon isotope fingerprinting and Bayesian Markov chain Monte Carlo method to study the key sources of black carbon (BC) in Guangzhou, China. The results showed that petroleum combustion was the dominant contributor, followed by coal combustion and biomass burning. Fossil fuel combustion was found to contribute the most to BC reduction.
ENVIRONMENTAL POLLUTION
(2022)
Article
Biodiversity Conservation
Zhilong Zhao, Changchun Huang, Lize Meng, Lingfeng Lu, Yongfang Wu, Rong Fan, Shuaidong Li, Zhengwei Sui, Tao Huang, Chulong Huang, Hao Yang, Limin Zhang
Summary: In this study, a three-band empirical algorithm for estimating particulate organic carbon (POC) sources based on remote sensing reflectance and stable isotope values was developed. The algorithm showed robust performance and good simulation results for different spectrometers. It revealed a decreasing trend in endogenous POC in Taihu Lake and provided insights into the relationship between POC sources and environmental factors. The use of remote sensing algorithms for evaluating POC from different sources is convenient and effective, contributing to a better understanding of carbon cycling in lacustrine ecosystems.
ECOLOGICAL INDICATORS
(2021)
Article
Meteorology & Atmospheric Sciences
Yangzhi Mo, Jun Li, Zhineng Cheng, Guangcai Zhong, Sanyuan Zhu, Chongguo Tian, Yingjun Chen, Gan Zhang
Summary: The study found that the contribution of fossil fuel to water-soluble organic carbon (WSOC) and its corresponding MAE(365) was higher in northern China than southern China; higher C-14 and C-13 of WSOC in the cold seasons may be related to corn residue burning; in the cold seasons, primary coal combustion emissions and secondary fossil WSOC generated under high NOx conditions increase the MAE(365) of WSOC.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Engineering, Environmental
Ilil Levakov, Jincheng Han, Zeev Ronen, Ofer Dahan
Summary: The study revealed that ferrous iron has a significant impact on perchlorate reduction, leading to a decrease in the rate of perchlorate reduction and accumulation of chlorate in the samples. On the other hand, ferric iron had a smaller effect on perchlorate degradation. Scanning electron microscopy showed that the presence of ferrous iron initiated the formation of an oxidized iron crust layer on the bacteria's surface, potentially affecting the enzymatic system involved in perchlorate reduction.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Soil Science
Zheng Li, Zeev Ronen, Faina Gelman, Onn Crouvi, Gilboa Arye, Ravid Rosenzweig
Summary: The study investigated the decrease in oil-induced soil hydrophobicity under different environmental conditions and the relationship between hydrophobicity and hydrocarbon content. Results showed that the addition of water, nutrients, and biosurfactants accelerated the reduction in hydrophobicity and decomposition of hydrocarbons. However, soil hydrophobicity remained severe in all treatments at the end of the incubation period, despite significant removal of total petroleum hydrocarbons.
Article
Soil Science
Ilil Levakov, Zeev Ronen, Hagar Siebner, Ofer Dahan
Summary: Analyzing free enzyme activity in pore-water samples is a reliable method for understanding biological activity in soils, showing a high correlation with enzymatic activities measured directly from soil samples. This approach offers a simple, non-destructive, and continuous way to assess biogeochemical dynamics under changing environmental conditions. Preliminary implementation in a contaminated site also demonstrated a strong correlation between in-situ enzyme activity measurement and pollutant biodegradation rate in the soil.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Public, Environmental & Occupational Health
Itay Bar-Or, Karin Yaniv, Marilou Shagan, Eden Ozer, Merav Weil, Victoria Indenbaum, Michal Elul, Oran Erster, Ella Mendelson, Batya Mannasse, Rachel Shirazi, Esti Kramarsky-Winter, Oded Nir, Hala Abu-Ali, Zeev Ronen, Ehud Rinott, Yair E. Lewis, Eran Friedler, Eden Bitkover, Yossi Paitan, Yakir Berchenko, Ariel Kushmaro
Summary: SARS-CoV-2, an RNA virus, has had a significant impact on affected countries' healthcare systems, economies, and societies in the past 8 months. Wastewater monitoring may serve as an efficient tool for epidemiological surveillance of the virus in large populations.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Michelle Henderson, Sarina J. Ergas, Kebreab Ghebremichael, Amit Gross, Zeev Ronen
Summary: Greywater treatment systems can effectively reduce antibiotic-resistant genes in greywater. The composition of bacterial community remains stable after treatment, with Proteobacteria, Epsilonbacteraeota, and Bacteroidetes being the dominant phyla. Several clinically relevant bacteria were identified in the treated greywater.
Article
Microbiology
Amit Yadav, Swati Gupta, Paula Istvan, Zeev Ronen
Summary: This study investigated the effects of perchlorate and chlorate on aerobic RDX degradation. The results showed different responses of different strains to co-contaminants, with enhanced growth observed in strain YH1 and inhibition in strain T7. The study also found that nitrogen limitation might be the reason for the increase in xplA gene expression.
Article
Microbiology
Kusum Dhakar, Raphy Zarecki, Shlomit Medina, Hamam Ziadna, Karam Igbaria, Ran Lati, Zeev Ronen, Hanan Eizenberg, Shiri Freilich
Summary: This study utilized metabolic-based community modeling approaches to simulate and prioritize potential biostimulants for removing pollutants from agricultural soils. The results showed that computational algorithms can guide the manipulation of soil microbiome and contribute to the design of biostimulation strategies.
Article
Microbiology
Ashraf Al-Ashhab, Amer Sweity, Luna Al-Hadidi, Moshe Herzberg, Zeev Ronen
Summary: This study investigates the biodegradability of three commercial antiscalants used in seawater desalination and their effects on microbial diversity. The results show that the polyphosphonate antiscalant is the least biodegradable and has the least impact on bacterial community composition.
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
Swati Gupta, Shikhar S. Goel, Hagar Siebner, Zeev Ronen, Gurunath Ramanathan
Summary: In this study, the genomic and metabolic ability of Stenotrophomonas strain SG1 to degrade TNT was investigated. The results showed that the addition of carbon sources accelerated the transformation rate of TNT, with citrate promoting the highest growth and transformation ratio. The research findings are important for basic research and practical applications in removing TNT from wastewater.
Article
Microbiology
Zheng Li, Ravid Rosenzweig, Fengxian Chen, Ji Qin, Tianyi Li, Jincheng Han, Paula Istvan, Damiana Diaz-Reck, Faina Gelman, Gilboa Arye, Zeev Ronen
Summary: A crude oil spill in Israel's Negev Desert resulted in soil contamination and decreased soil hydrophobicity, posing a threat to plant survival. Researchers isolated and identified indigenous bacteria capable of producing biosurfactants and degrading hydrocarbons, and found that inoculating these bacteria into the contaminated soil significantly reduced hydrophobicity.
Article
Biotechnology & Applied Microbiology
Ali Nejidat, Mor Meshulam, Damiana Diaz-Reck, Zeev Ronen
Summary: This study investigated the appearance of oil-degrading bacterial species in the soil of a hyperarid area in Israel that experienced a major oil spill. The dominant phyla in both contaminated and control soils were Proteobacteria and Actinobacteria. The contaminated soil contained bacterial species capable of degrading aromatic and aliphatic oil constituents. Phosphorus amendment significantly accelerated the biodegradation of crude oil under extremely arid conditions.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Review
Chemistry, Multidisciplinary
Daniella Itzhari, Zeev Ronen
Summary: The reuse of household greywater is increasing globally, however, wastewater and greywater treatment processes are not fully effective in removing all contaminants. The dynamics between emerging micropollutants and antibiotic resistance genes in greywater treatment systems are complex. More studies are needed to understand the fate and transport of emerging micropollutants, antimicrobial-resistant bacteria, and antibiotic resistance genes in microbial communities and soil properties.
APPLIED SCIENCES-BASEL
(2023)
Article
Biochemistry & Molecular Biology
Shalom Fox, Kristina Stadnik, Amit K. Thakur, Lior Farkash, Zeev Ronen, Yoram Oren, Jack Gilron
Summary: Extensive research has been conducted on ion exchange membrane bioreactors, specifically Donnan dialysis contactors, for the removal of trace oxyanions from contaminated water sources. A plug flow Donnan dialysis contactor has been found to significantly increase concentration compared to continuous stirred tank reactor contactors. These findings provide a basis for scaling up Donnan dialysis contactors in full-scale bioreactor setups.
Article
Environmental Sciences
Swati Gupta, Shikhar S. Goel, Gurunath Ramanathan, Zeev Ronen
Summary: Diaphorobacter strain DS2 degrades 3-nitrotoluene and 2-nitrotoluene via 3-nitrotoluene dioxygenase (3NTDO), but is not directly involved in the degradation of 2,4,6-trinitrotoluene (TNT). DS2 strain can grow using TNT as the sole carbon and nitrogen source. Ammonium chloride and succinate can enhance the degradation rate of TNT. TNT does not compete with 3NT degradation in the resting cell experiment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)