The design of crystallization processes becomes more complicated when mixing affects the final crystal product quality (e.g., crystal size distribution and polymorphic form). Such mixing effects are more apparent in antisolvent and reactive crystallizations, which involve the blending of different fluids, and in large-scale crystallizers, where homogeneity cannot be easily achieved. In this pap...

A bio-inspired, leaf-like pumping strategy by mimicking the transpiration process through leaves is developed for autonomous and continuous liquid transport enabled by durable hydrophilic sponges. Without any external power sources, flows are continuously generated ascribed to the combination of capillary wicking and evaporation of water. To validate this method, durable hydrophilic polydimethy...

Ingenious micromixing systems have been developed in order to overcome the limitations of mixing microflows in microfluidic devices reaching a complete and effective mixing in short times. Several approaches have been tried. MEMS (Micro Electro Mechanical Systems) based devices have been used, such as microvalves and micropumps [1]. However, these systems increase the cost of the system, the co...

We assessed xurography and laser ablation for the manufacture of passive micromixers arrays to explore the scalability of unconventional manufacture technologies that could be implemented under the restrictions of the Point of Care for developing countries. In this work, we present a novel split-and-recombine (SAR) array design adapted for interfacing standardized dispensing (handheld micropipe...

Nucleation and growth of zirconium-oxo-alkoxy (ZOA) nanoparticles were studied in a sol-gel process in n-propanol solution at a hydrolysis ratio H between 1.0 and 2.7 and zirconium-n-propoxyde precursor concentrations between 0.10 and 0.15 mol l(-1). The chemical transformations were conducted in quasi-perfect micromixing conditions (Damköhler number Da ≤ 1) and the nanoparticle size evolution ...

In practice, the issue of mixing and chemical reactions is very important in the economic aspects of chemical reaction engineering. A major priority in industrial reactors is to optimize the yield of desired products. This optimization is a function of reactor geometry, the chemical and physical characteristics of the reacting system, the degree of mixing, and the mode of supplying the reactor ...

On the basis of the stochastic reactor model Partially Stirred Plug Flow Reactor (PaSPFR) a model is developed that accounts for soot and NOx formation in the distributed combustion regime. This is done by means of the joint composition probability density function (PDF). The composition vector consists of the species mass fraction in the gas phase, enthalpy, and four moments of the soot partic...

A continuous flow sonochemical reactor was developed capable of producing metastable cadmium sulfide (CdS) nanoplatelets with thicknesses at or below 10nm. The continuous flow sonochemical reactor included the passive in-line micromixing of reagents prior to sonochemical reaction. Synthesis results were compared with those from reactors involving batch conventional heating and batch ultrasound-...

In this study, geometrically modified microchannels fabricated using a stereolithography technique are employed to analyze micromixing of polymeric solutions. Experimental and numerical analyses were conducted evaluate the qualitative quantitative validity Newtonian fluid flow inside channels. An in-house image processing code was used dye concentration distributions resulting from complex tran...

The mixed vanadium-titanium oxo-alkoxy (VTOA) nanoparticles were synthesized via sol-gel method in a chemical reactor with ultra-rapid micromixing. nucleation and growth kinetics particles size, followed by the static/dynamic light scattering methods, quite different from those of pure titanium (TOA) vanadium (VOA) species. It was shown that TOA species appear first serve to be centres attracti...