نتایج جستجو برای: photoreactor design and scale
تعداد نتایج: 16990655 فیلتر نتایج به سال:
Abstract The production of solar fuels via the photoreduction carbon dioxide to methane by titanium oxide is a promising process control greenhouse gas emissions and provide alternative renewable fuels. Although several reaction mechanisms have been proposed, detailed steps are still ambiguous, limiting factors not well defined. To improve our understanding photoreduction, multi-physics model w...
Pesticide contamination of natural waters is posing serious threats to water supplies in many parts of the world. Heterogenous photocatalytic Oxidation with TiO2 photocatalyst is emerging as an attractive technique for pesticide removal. Studies on Monocrotophos (MCP) a widely used pesticide in India, in an annular slurry photoreactor, revealed that the degradation rate is significantly affecte...
A series of 4,4'-dimethoxybenzophenone mediated intra- and intermolecular photodecarboxylation reactions involving phthalimides have been examined under microflow conditions. Conversion rates, isolated yields and chemoselectivities were compared to analogous reactions in a batch photoreactor. In all cases investigated, the microreactions gave superior results thus proving the superiority of mic...
• Modeling and design criteria of photocatalytic reactors for water treatment Sunlight artificial radiation sources analyzed Pilot full-scale demonstrated Photocatalytic system process economics The debate on whether photocatalysis can reach full maturity at commercial level as an effective economical purification wastewater has recently intensified. Despite a bloom scientific investigations in...
The use of an irradiation source with a homogeneous distribution in the volume reaction mixture belongs to essential aspects heterogeneous photocatalysis. First, efficacy six lamps various radiation intensity and characteristics is contrasted. topic discussion photocatalytic hydrogen production from methanol-water solution presence NiO-TiO 2 photocatalyst. second section focused on potential mi...
the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...
the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...
the major aim of this study was to investigate the relationship between iq, eq and test format in the light of test fairness considerations. this study took this relationship into account to see if people with different eq and iq performed differently on different test formats. to this end, 90 advanced learners of english form college of ferdowsi university of mashhad were chosen. they were ask...
the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis,a one-way anova experimental design was carried out. 24 sednior students of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inter...
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