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Multistep Removal System of Gaseous Toluene: Adsorption, Electrochemical, and Photolytic Treatments.
Chempluschem
December 2024
Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. (CIDETEQ)., Parque Tecnológico Querétaro s/n, San Fandila, 76730, Pedro Escobedo, Querétaro, México.
A large amount of atmospheric emissions result from various anthropogenic activities worldwide. Given the complexity of volatile organic compounds (VOCs) and their different adsorption capacities, redox potentials, and photolytic properties, an air purification system for the removal of VOCs that combines multiple physical processes was proposed in this study using toluene as an example. These processes include, in the first step, an adsorption treatment (AT) with activated carbon (AC), where toluene adsorption results from the insertion of aromatic rings (nonpolar groups) between the graphitic carbon planes, as demonstrated by the Raman spectroscopy; in the second step, electrochemical treatment (ECT) using TiO|Ti||SS-304 electrodes applying an electric field to accelerate the oxidation of toluene through the production of free radicals (⋅OH), hydroperoxyl radicals and benzyl groups, followed by the rupture of aromatic rings to generate aliphatic compounds and the consequent mineralization to CO, CO, and HO; in the third step, photolytic treatment (PT) with a 254-nm UV lamp for toluene degradation is used, which is influenced by the addition of radicals, such as ⋅OH or ⋅O , to transform toluene into either benzene or phenol.
View Article and Find Full Text PDFCopper-nickel-MOF/nickel foam catalysts grown in situ for efficient electrochemical nitrate reduction to ammonia.
J Hazard Mater
December 2024
Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China; Carbon Neutralization and Environmental Catalytic Technology Laboratory (CN&ECT Lab), Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi 832003, China. Electronic address:
Reducing nitrate (NO) in an aqueous solution to ammonia under ambient conditions can provide a green and sustainable NH-synthesis technology and mitigate global energy and pollution issues. In this work, a CuNi-1,3,5-benzenetricarboxylic acid/nickel foam (CuNi-MOF/NF) catalyst grown in situ was prepared via a one-pot method as an efficient cathode material for electrocatalytic nitrate reduction reaction (NORR). The CuNi-MOF/NF catalyst exhibited excellent electrocatalytic NORR performance at -1.
View Article and Find Full Text PDFUse of ECT in patients with organic catatonia.
Asian J Psychiatr
November 2024
Department of Psychiatry, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India.
Background: Electroconvulsive therapy (ECT) is considered to be a treatment of choice in patients with catatonia, who do not respond to lorazepam, irrespective of the underlying aetiology. Although, significant data is available for successful use of ECT in patients with catatonia secondary to affective and psychotic disorders, little information is available for use of ECT in organic catatonia.
Aim: To assess demographic and clinical profile of patients with organic catatonia receiving ECT.
Metabolic pathway engineering of high-salinity-induced overproduction of L-proline improves high-salinity stress tolerance of an ectoine-deficient .
Appl Environ Microbiol
September 2024
Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, Japan.
Halophilic bacteria have adapted to survive in high-salinity environments by accumulating amino acids and their derivatives as organic osmolytes. L-Proline (Pro) is one such osmolyte that is also being used as a feed stimulant in the aquaculture industry. OUT30018 is a moderately halophilic bacterium that accumulates ectoine (Ect), but not Pro, as an osmolyte.
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