About: Methylene blue degradation by the VUV/UV/persulfate process: Effect of pH on the roles of photolysis and oxidation

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An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Methylene blue degradation by the VUV/UV/persulfate process: Effect of pH on the roles of photolysis and oxidation
Creator	Li, Wentao Li, Mengkai Lv, Jinrong Qiang, Zhimin Wen, Dong
Source	Elsevier; Medline; PMC
abstract	Abstract This study investigated methylene blue (MB) degradation by the vacuum-ultraviolet/ultraviolet/persulfate (VUV/UV/PS) process using a mini-fluidic VUV/UV photoreaction system. Results show that MB degradation by the VUV/UV/PS process was significantly higher than that of the conventional UV/PS process, as the VUV photolysis of H2O and PS generated more reactive oxygen species (ROSs). HO• and SO4 •−, identified as the main ROSs, were mostly consumed by dissolved organic carbon and Cl‒ in real waters, respectively. Additionally, the impacts of solution pH and the concentrations of PS, humic acid, and inorganic ions (HCO3 ‒, Cl‒, NO3 ‒, SO4 2‒, Fe(II), and Fe(III)) were systematically evaluated. The solution pH significantly affected the photon absorption distributions, as well as the contributions of photolysis and oxidation to MB degradation, resulting in different variations in the degradation rate constant and total organic carbon removal ratio with increasing solution pH. At all tested pH levels (3.0–11.0), particularly under acidic conditions, HO and SO4 − were two predominant contributors to MB degradation, while VUV and UV photolysis contributed more when the solution pH increased. This study provides a highly efficient process for organic pollutant removal, which could be applied in water treatment.
has issue date	2020-06-05(xsd:dateTime)
bibo:doi	10.1016/j.jhazmat.2019.121855
bibo:pmid	32204952
has license	els-covid
sha1sum (hex)	d3e1c747a6d701f0a34d462d441d4ac2f0c97adc
schema:url	https://doi.org/10.1016/j.jhazmat.2019.121855
resource representing a document's title	Methylene blue degradation by the VUV/UV/persulfate process: Effect of pH on the roles of photolysis and oxidation
has PubMed Central identifier	PMC7127383
has PubMed identifier	32204952
schema:publication	Journal of Hazardous Materials
resource representing a document's body	covid:d3e1c747a6d701f0a34d462d441d4ac2f0c97adc#body_text
is schema:about of	named entity 'persulfate' named entity 'degradation' named entity '2 O' named entity 'PROCESS' named entity 'METHYLENE BLUE' named entity 'VACUUM' named entity 'METHYLENE BLUE' named entity 'MINI' covid:arg/d3e1c747a6d701f0a34d462d441d4ac2f0c97adc named entity 'GENERATED' named entity 'STUDY' named entity 'RESULTS' named entity 'CONVENTIONAL' named entity 'OXIDATION' named entity 'PHOTOLYSIS' named entity '80%' named entity 'DEGRADATION' named entity 'SYSTEM' named entity 'REACTIVE OXYGEN SPECIES' named entity 'PROCESS' named entity 'HIGHER' named entity 'EFFECT' named entity 'ROLES' named entity 'DEGRADATION' named entity 'INVESTIGATED' named entity 'USING' named entity 'PHOTOLYSIS' named entity 'H 2' named entity 'ULTRAVIOLET' named entity 'PHOTOREACTION' named entity 'methylene blue' named entity 'ultraviolet' named entity 'VUV' named entity 'reactive oxygen species' named entity 'photoreaction' named entity 'VUV' named entity 'organic pollutant' named entity 'iron' named entity 'VUV' named entity 'TBA' named entity 'VUV' named entity 'disinfectant' named entity 'S19' named entity '2.6' named entity 'microorganisms' named entity 'VUV' named entity 'UV photons' named entity 'uridine' named entity 'VUV' named entity 'Japan' named entity 'DOC' named entity 'iron' named entity 'strongly acidic' named entity 'wastewater effluent' named entity 'TOC' named entity 'VUV' named entity 'Advanced oxidation processes' named entity 'Humic acid' named entity 'solutes' named entity 'VUV' named entity 'organic pollutants' named entity 'Chemical Reagent' named entity 'VUV' named entity 'UV photolysis' named entity 'tert-butyl alcohol' named entity 'water samples' named entity 'VUV' named entity 'UV irradiation' named entity 'oxidation' named entity '11.0' named entity '5.0' named entity 'AOPs' named entity 'DOC' named entity 'VUV' named entity 'VUV' named entity 'phosphate' named entity 'Japan'

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