The following are the recommendations for possible further work:
The study can be extended to determine whether the Zwietering correlation can be used in solid-liquid systems with different rheology such as systems with more viscous or non-Newtonian liquids.
The present study increased liquid height and kept the vessel diameter constant. Further investigations can be performed on wider vessels fitted with dual impellers to determine its viability in achieving process intensification.
The study used a single transducer to irradiate the slurry. Further investigations into enhancing mass transfer with ultrasound can be performed using vessels fitted with multiple transducers as this may help to alleviate the effect of ultrasonic wave scattering.
This study used a model system to replicate ultrasonic addition into solid-liquid slurry. Further investigations can be done using materials commonly encountered in industry, such as mineral ore and its corresponding lixiant as the solid and liquid phases, respectively.
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