Results 261 to 270 of about 325,287 (328)

Reactive Extraction of Gallic Acid Using Tributyl Phosphate in Different Classes of Diluents

Journal of Chemical and Engineering Data, 2019
Gallic acid is an important carboxylic acid used in pharmaceutical industries owing to its medicinal properties. The separation of gallic acid from fermentation broth and dilute aqueous streams is a challenging task.
N. Joshi, A. Keshav, Anil. K. Poonia
semanticscholar   +1 more source

Two-step catalytic reactive extraction and transesterification process via ultrasonic irradiation for biodiesel production from solid Jatropha oil seeds

, 2019
A two-step catalytic reactive extraction and transesterification process was adopted to synthesize biodiesel from solid Jatropha seeds, a non-edible source with high free acid content, directly using ultrasound irradiation.
Shiou Xuan Tan, Steven Lim, Hwai Chyuan Ong, Y. Pang, Kusumo Fitranto, B. Goh, C. Chong   +6 more
semanticscholar   +1 more source

Reactive extraction of pyruvic acid using mixed extractants

Separation Science and Technology, 2016
ABSTRACTThe synergistic effect of mixing of extractants (tri-n-butylphosphate, TBP; tri-n-octylamine, TOA; and Aliquat 336, A336) was investigated in view of recovery of pyruvic acid from fermentation media. Extraction experiments were performed at T = 302K, from aqueous solution of pyruvic acid (0.025–0.2 kmol m−3) using single and mixed extractants ...
Dharm Pal, Niraj Thakre, Awanish Kumar, Amit Keshav   +3 more
openaire   +1 more source

REACTIVE EXTRACTION OF ORGANIC ACIDS BY SUPERCRITICAL CO2

Reviews in Chemical Engineering, 1999
Reactive extraction of citric acid and acetic acid from their aqueous solutions by supercritical (SC) CO2 was studied. Since organic acids are polar compounds which can hardly be extracted by SC CO2, reactants which increase the solubility of the acid by a chemical reaction are used.
Calimli, A, Mehmetoglu, U, Guvenc, A, Kapucu, NURCAN   +3 more
openaire   +2 more sources

Exergy analysis of a reactive extraction process

Chemical Engineering Research and Design, 2020
Abstract This work proposes a methodology to perform exergy analysis of an intensified isothermal reactive extraction process. The method involves two steps. The first one includes the modeling and adaptation of a material utilization diagram (MUD) to allow the estimation of exergy losses and gains for each component and for the overall process.
María de los Ángeles Olán-Acosta, Juan Barajas-Fernández, Pedro García-Alamilla, Edgar Omar Castrejón-González, Vicente Rico-Ramírez   +4 more
openaire   +1 more source

Process Intensification by Reactive Carriers in Reactive Extraction and Sorption

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +1 more source

Reactive solvent extraction of amino acids with cationic extractants

Journal of Chemical Technology & Biotechnology, 1998
A mixture of amino acids (arginine, phenylalanine, alanine, glycine and aspartic acid) in solution was extracted by four acidic extractants (dinonylnaphthalenesulphonic acid (DNNSA), di(2-ethylhexyl)monothiophosphoric acid (D2EHPA(S)), di(2-ethylhexyl)phosphoric acid (D2EHPA) and Versatic 10) in toluene. The extractive capacity of the organic phase for
Neil A. Kelly, Muchi Lukhezo, Bryan G. Reuben, Lawrence J. Dunne, Michael S. Verrall   +4 more
openaire   +1 more source

Reactivations of ocular toxoplasmosis after cataract extraction

Ophthalmology, 2002
To determine the risk of reactivation of ocular toxoplasmosis following cataract extraction.Retrospective case-control study.Out of 154 patients with ocular toxoplasmosis, 14 patients (15 eyes) who had undergone a cataract extraction and 45 age- and sex- matched controls without cataract were selected.A review of the medical records of 14 patients with
Lotje H, Bosch-Driessen, Marjolijn B, Plaisier, Jan S, Stilma, Allegonda, Van der Lelij, Aniki, Rothova   +4 more
openaire   +2 more sources

Reactivity of solids and extractive metallurgy

Reactivity of Solids, 1987
Abstract This paper reviews the use of the reactivity of solids in extractive metallurgy. Various examples of the application of reactivity of solids in pyrometallurgy, hydrometallurgy and in solving problems of environmental protection are considered.
openaire   +1 more source

Recovery of penicillin by reactive extraction in centrifugal extractors

Biotechnology and Bioengineering, 1987
AbstractPenicillin V and/or G were extracted from fermentation broth by Amberlite LA‐2 in n‐butylacetate at pH 5 in a laboratory centrifugal extractor, Type SA 01 of Westfalia, up to an overall phase throughput rate of 30 L/h, in a bench‐scale four‐stage extraction system, consisting of Type TA 1 of Westfalia, up to an overall phase throughput rate of ...
Z, Likidis, K, Schügerl
openaire   +2 more sources