Knowledge and control of mixing in batch processes can prevent yield losses during scale-up. Therefore, this study, a new heat-mixing model based ono the measurement heat distribution after an applied pulse, is proposed. The was developed to predict mesomixing support scale-up, scale-down, design optimisation reactors. proposed considers influences rotational speed, stirrer type, solvent, stirr...

Magnetohydrodynamics may potentially provide a convenient means for controlling fluid flow and stirring fluids in minute fluidic networks. The branches of such fluidic networks consist of conduits with rectangular cross sections. Each conduit has two individually controlled electrodes positioned along opposing walls and additional disk-shaped electrodes deposited in the conduit's interior away ...

Calcium oxide is one of the appropriate catalysts for biodiesel production. In this study, cheap and compatible with environment catalyst has been used. Mussel shell of Persian Gulf coast is one of the sources of calcium carbonate that is converted to calcium oxide at calcination temperature up to 950°C. Transesterification reaction was carried out at optimum condition of our previous study...

The present study investigates the mechanical and thermal behavior of polyurethane electrostatic powder coating waste reinforced epoxy composites. Different percentages (3, 6, 9 wt. %) composites were manufactured. mixture was mixed with a magnetic stirrer to ensure that dispersed well in epoxy, then placed under vacuum air bubbles removed. Tensile three-point tests performed determine changes ...

Using the knowledge gained from the wave chaos theory, we present a simple modification of the shape of a reverberation chamber (RC) consisting in inserting a metallic hemisphere on a cavity wall. The presented simulation results show a significant improvement of the field statistical properties, and this without resorting to a mode stirrer.

An intrinsic reverberation chamber with non-parallel walls, ceiling not parallel to the floor, at most two walls placed perpendicular and with fixed field diffusers is presented. Inside this room no eigenmodes exist and a diffuse, statistically uniform field is created without the use of a mechanical mode stirrer. As a result, test time can be reduced drastically compared to mode stirred reverb...

The industrial crystallisation of well soluble substances is often dominated by secondary nucleation, in particular contact nucleation, and crystal growth. In different crystallisers types the attrition is mainly caused by the crystals impact onto stirrer blades, pumps, etc. The ultimate objective is to quantitatively describe a crystallization process, which is governed by the formation and gr...

A simple manual micro-titration method is proposed for the potentiometric and conductometric titration of 200 to 800 µL liquid samples. The sample be titrated dispensed into chamber; bottom section a plastic test tube that glued center small stirring magnet. After inserting sensing probe tip titrant delivery chamber, chamber-stirring magnet assembly spun at low speed using conventional magnetic...

Acid mine drainage for Fe and Mn metals have a negative impact on the environment. This study studies use of calcium oxide fly ash as adsorbents, used to absorb contained in acid drainage. aims analyze effectiveness Calcium Oxide that an adsorbent The method is experimental with laboratory scale, test carried out by adsorption using batch system. Magnetic stirrer stirring medium process. variou...