Effect of the Reactor Configuration on the Production of Silver Nanoparticles

• Main Authors: T. Kisyelova, A. Novruzova, F. Hajiyeva, M. Ramazanov, A. Chianese
• Format: Article
• Language: English
• Published: AIDIC Servizi S.r.l. 2016-05-01
• Series: Chemical Engineering Transactions
• Online Access: https://www.cetjournal.it/index.php/cet/article/view/4112

The main aim of this work is to show the effect of the reactor configuration on the production of silver nanoparticles by chemical synthesis. Silver nanoparticles were produced in batch mode using the chemical precipitation method. Different reactor-precipitation set-up were adopted: a stirred tank reactor (STR) with a three blade marine propeller or a turbine impeller, and a spinning disc reactor (SDR) coupled with an STR. It was shown that the intensification of the mixing process, provided by the turbine impeller and the use of the SDR, leads to a decrease of the nanoparticles average size from 31 down to 16 nm. On the contrary, the yield was affected by both the mixing effectiveness and the reactor residence time. At the optimal condition a value of yield equal to 93 % was obtained. The purity of the obtained nanoparticles was in all the cases quite satisfactory in the range 89 – 96 % of silver.