Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Jorge M.T. Vasconcelos"'
Autor:
Jorge M.T. Vasconcelos, S.S. Alves, Rui L. Mendes, Teresa Lopes da Silva, Vitor Calado, Alberto Reis, Nadia Silva
Publikováno v:
Biotechnology and Bioprocess Engineering. 11:245-250
The effects of aliphatic hydrocarbons (n-hexadecane andn-dodecane) on the volumetric oxygen mass transfer coefficient (k L a) were studied in flat alveolar airlift reactor and continuous stirred tank reactors (CSTRs). In the flat alveolar airlift rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a342c6f14dfa9495efe4b3717b499624
https://doi.org/10.1007/bf02932038
https://doi.org/10.1007/bf02932038
Autor:
S.S. Alves, Teresa Lopes da Silva, Vitor Calado, Rui L. Mendes, Alberto Reis, Ana Mendes, Jorge M.T. Vasconcelos
Publikováno v:
Journal of Industrial Microbiology & Biotechnology. 33:408-416
The potential use of n-dodecane as an oxygen vector for enhancement of Crypthecodinium cohnii growth and docosahexaenoic acid (DHA) production was studied. The volumetric fraction of oxygen vector influenced the gas-liquid volumetric mass transfer co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cf60dcbeca0c5f6e16199dad63ba857
https://doi.org/10.1007/s10295-006-0081-8
https://doi.org/10.1007/s10295-006-0081-8
Publikováno v:
Chemical Engineering Science. 61:1334-1337
Experimental gas–liquid mass transfer data from a system where single bubbles are kept stationary by a low turbulence downward liquid flow are compared with predictions from theoretical models which take turbulence into account. The data clearly sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::927a0549770d31d47f27f243034d5d11
https://doi.org/10.1016/j.ces.2005.08.001
https://doi.org/10.1016/j.ces.2005.08.001
Publikováno v:
Chemical Engineering Science. 60:1-9
An apparatus where individual bubbles are kept stationary in a downward liquid flow was adapted to simultaneously (i) follow mass transfer to/from a single bubble as it inevitably gets contaminated; (ii) follow its shape; and (iii) periodically measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df4abdc8b802aaefe903546a6b7ef676
https://doi.org/10.1016/j.ces.2004.07.053
https://doi.org/10.1016/j.ces.2004.07.053
Publikováno v:
Chemical Engineering and Processing: Process Intensification. 43:823-830
Experimental data on the average mass transfer liquid film coefficient (kL) in an aerated stirred tank are presented. Liquid media used were tap water, electrolyte solutions and water with controlled addition of tensioactive material. Values of kL ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e37171455f51deafdadddbd5b07d381
https://doi.org/10.1016/s0255-2701(03)00100-4
https://doi.org/10.1016/s0255-2701(03)00100-4
Autor:
Jorge M.T. Vasconcelos, J.M.L Rodrigues, S.S. Alves, Sandra C. P. Orvalho, Alberto Reis, Rui L. Mendes
Publikováno v:
Chemical Engineering Science. 58:1431-1440
In this work, the effects of surface-active contaminants on mass transfer coefficients k L a and k L were studied in two different bubble contactors. The oxygen transfer coefficient, k L , was obtained from the volumetric oxygen transfer coefficient,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::248138810171762c2cc64eed3530e6d6
https://doi.org/10.1016/s0009-2509(02)00675-9
https://doi.org/10.1016/s0009-2509(02)00675-9
Publikováno v:
Chemical Engineering Journal. 89:109-117
Local average bubble size in a dual turbine stirred tank is investigated. Results are compared with data from the literature, obtained under many different conditions, including different types and numbers of stirrers, different media and measuring s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60abfa73b18de73b8fad052b619b9582
https://doi.org/10.1016/s1385-8947(02)00008-6
https://doi.org/10.1016/s1385-8947(02)00008-6
Publikováno v:
AIChE Journal. 48:1145-1154
The dissolution of single bubbles of gases of low solubility kept stationary in a downward stream of water was studied. In “clean” water, two regimes are identified. Initially, the process is fast, consistent with the theory for circulating bubbl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::355171842cd8509d6cf743ba8a179a41
https://doi.org/10.1002/aic.690480603
https://doi.org/10.1002/aic.690480603
Publikováno v:
Chemical Engineering Science. 57:487-496
Gas dispersion in a double turbine stirred tank is experimentally characterised by measuring local gas holdups and local bubble size distributions throughout the tank, for three liquid media: tap water, aqueous sulphate solution and aqueous sulphate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00a7d7ca8e385827f1eee97c20233a82
https://doi.org/10.1016/s0009-2509(01)00400-6
https://doi.org/10.1016/s0009-2509(01)00400-6
Publikováno v:
Industrial & Engineering Chemistry Research. 39:203-213
Different modifications of the Rushton turbine were studied in a dual-impeller agitated tank (T = 0.4 m), to find the effect of blade form on power draw, turbulent dispersion, gas handling capacity...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fca5ee34df59b37ca00800ad98e67210
https://doi.org/10.1021/ie9904145
https://doi.org/10.1021/ie9904145