Article
Biotechnology & Applied Microbiology
Junhui Li, Paul Dijkstra, Qihong Lu, Shanquan Wang, Shaohua Chen, Deqiang Li, Zhiheng Wang, Zhenglei Jia, Lu Wang, Hojae Shim
Summary: The study identified 952 genomes carrying genes associated with DMF degradation, expanding the known diversity of bacteria with this metabolic capability. Both aerobic and anaerobic pathways for DMF degradation were found, with microbial consortia potentially more advantageous than pure culture in degrading DMF in wastewater.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Engineering, Environmental
Yongyi Gao, Ting Chen, Yifan Hou, Ruiyun Xue, Rui Liu, Fu Chen, Yongming Zhang, Bruce E. Rittmann
Summary: This study investigates the biodegradation of N-methyl pyrrolidone (NMP) in activated sludge and identifies the factors that enhance its degradation. It finds that prolonged acclimation of biomass with NMP improves NMP biodegradation, and specific bacteria isolated from the acclimated biomass can significantly accelerate NMP degradation in activated sludge. Additionally, the study identifies monomethylamine as a key intermediate that limits the mineralization of NMP and demonstrates that enhancing its removal can expedite NMP biodegradation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Acoustics
Hanyang Gao, Kunkun Pei, Dong Lei, Guoxin Hu, Yan Chao, Aihua Meng, Hongcheng Wang, Wei Shentu
Summary: Gas-expanded liquids have advantages over traditional organic solvents due to tunability in mass transfer, solvation, and solubility, while ultrasonication is a commonly used method to enhance heat and mass transfer. The combination of ultrasonic technology and gas-expanded liquid systems can promote polymerization, enhance extraction efficiency, and control nanocrystal growth size, providing a perfect platform for high-speed mass transfer.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Analytical
Zhen-Guo Fan, Zhen-Yu Tian, Wang Li, Zhi-Hao Zheng, Jiu-Zhong Yang
Summary: N,N-dimethylformamide (DMF) can be effectively degraded by pyrolysis. The main pathways of DMF consumption are hydrogen abstraction and dissociation, leading to the formation of methane, ethylene, and carbon monoxide. Other nitrogen-containing compounds related to NOx are also produced. These findings are important for further research on the treatment of DMF in exhaust fumes through pyrolysis and the clean utilization of amine fuels.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Applied
Elsa M. Goncalves, Nuno Lousa Pereira, Filipe Estanislau, Pedro Serra Carvalho
Summary: The thermal decomposition of the NBS/DMF solution at low temperatures was investigated, revealing a hazardous reaction with an autocatalytic mechanism. The onset and overall energy output of the decomposition were found to be influenced by the concentration of NBS and the materials used in the equipment.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2023)
Article
Polymer Science
Lei Xu, Mingxiang Ju, Wentai Guo, Shengrui Yu
Summary: Researchers focus on the extensional rheological behaviors of Poly(vinylidene fluoride) (PVDF) solutions in the electrospinning process. The extensional viscosity of PVDF solutions is measured to understand the fluidic deformation in extension flows. An exponential model can be used to fit the measured values of uniaxial extensional viscosity at various extension rates, while a traditional power-law model is applicable to steady shear viscosity.
Article
Agriculture, Multidisciplinary
Tatsushi Nakayama, Bunji Uno
Summary: The reactivity of trans-resveratrol and related compounds towards the electrogenerated superoxide radical anion (O2·-) was investigated using electrochemistry and spectroscopy. The results showed that trans-resveratrol scavenged O2·- through proton-coupled electron transfer (PCET) via three phenolic hydroxy groups (OH) on the stilbene moiety. Comparative analyses confirmed the reaction of trans-resveratrol towards O2·- using related compounds. The coplanarity of the two phenolic rings in the stilbene moiety linked by an ethylene bridge was found to be essential for successful O2·- scavenging.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Agriculture, Multidisciplinary
Yumeng Chen, Meng Wang, Wei Wang, Yi Zeng, Xingjia Fan, Maobing Tu, Yushu Ma, Dongzhi Wei
Summary: The study focuses on the assessment and utilization of N,N-dimethylformamide-containing wastewater to reduce environmental impact. The results demonstrate that adding this wastewater to Trichoderma reesei fermentation media enhances cellulase production and cellulose hydrolysis. However, N,N-dimethylformamide, as a cellulase enhancer, is not biodegraded during cellulase production and remains in the cellulase solution. The study also identifies core enzyme modules inserted into Escherichia coli, which can metabolically degrade N,N-dimethylformamide and produce succinate using N,N-dimethylformamide-enhanced cellulosic sugar as a substrate. The described platform offers a potential solution for converting waste into valuable bioproducts.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Meng Jin, An-Zhen Li, Ye Wang, Jing Li, Hua Zhou, Bi-Jie Li, Haohong Duan
Summary: A green and electrochemical strategy to produce DMF under ambient conditions through direct oxidation of TMA was reported. DMF production with 80% yield and >50% faradaic efficiency was achieved in an H-cell reactor. Mechanistic investigations revealed a two-phase oxidation reaction with an aminal as the key intermediate. Continuous DMF production was achieved in a membrane-electrode assembly (MEA) flow reactor with high productivity and faradaic efficiency. This study offers a unique opportunity to utilize surplus chemicals under ambient conditions, contributing to the sustainability of the chemical industry.
Article
Engineering, Chemical
Karthik Nuthalapati, Yu-Jane Sheng, Heng-Kwong Tsao
Summary: This study observed the time evolution of Silwet-laden DMF droplets below a substrate and determined the dynamic surface tensions of pendant drops. The results showed that low concentrations of Silwet resulted in a slow decrease in surface tension, while high concentrations led to rapid droplet detachment. This peculiar interfacial dynamics can be attributed to the unique properties of Silwet in DMF.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Review
Chemistry, Organic
Xiao-hua Cai, Hui Guo
Summary: DMF, an inexpensive and abundant solvent and industrial raw material, has been widely used as an effective polar solvent and versatile reagent in synthetic transformations, leading to significant achievements in the past few decades. This mini-review will focus on recent advances in utilizing DMF as a multipurpose building block in synthetic reactions.
CURRENT ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Imtej Singh Saggu, Sukhjinder Singh, Sukhwinder Singh, Sandeep Sharma
Summary: We have developed a high-performance chemiresistive gas sensor using a composite of layered nanosheets of WSe2 and multiwalled carbon nanotubes. This sensor can detect VOCs like DMF under room temperature and highly humid conditions, with a detection limit of 2ppm and fast response and recovery rates.
SURFACES AND INTERFACES
(2023)
Article
Multidisciplinary Sciences
Matheus I. S. Santos, Erika C. T. A. Brandao, Ewerton Santos, Marcus Vinicius A. Batista, Charles S. Estevam, Marcelo R. Alexandre, Marcelo F. Fernandes
Summary: This study evaluated the efficiency of soil bacterial species Burkholderia sp. and Methylobacterium radiotolerans in degrading Pendimethalin, a widely used herbicide. The results showed that both strains were able to degrade the herbicide effectively, with Burkholderia sp. F7G4PR33-4 being more efficient. These findings contribute to the understanding of the potential biotechnological applications of these bacterial genera in herbicide degradation and bioremediation.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
Article
Multidisciplinary Sciences
Yilin Ma, Qiu Zhang, Luojia Liu, Yixin Li, Haixia Li, Zhenhua Yan, Jun Chen
Summary: This study presents a simple strategy to improve the performance of aqueous Zn batteries by suppressing side reactions and enhancing the reversibility of the Zn electrode. By introducing DMF to the electrolyte, the water activity is effectively reduced, leading to higher efficiency and longer cycle life.
NATIONAL SCIENCE REVIEW
(2022)
Article
Chemistry, Organic
Rurong Yu, Feiyue Hao, Xinyu Zhang, Zhongbing Fang, Zhengneng Jin, Guyue Liu, Guoliang Dai, Jiashou Wu
Summary: A method for selectively reducing 2-pyridyl ketones and related N-heteroaryl compounds using cobalt stearate as a catalyst and DMF as a hydride source has been developed. The chelation with cobalt activates the ketone substrate, making this method highly chemoselective. A possible reaction mechanism has been proposed based on control experiments.
JOURNAL OF ORGANIC CHEMISTRY
(2023)