This module introduces the fundamentals of gas-solid and liquid-solid systems, and includes the study of fluidised bed bubble dynamics, particle mixing and segregation, heat and mass transfer, fluidised bed chemical reactors and crystallisation. Module Summary -Fundamentals of gas-solid and liquid-solid systems. -Bubble dynamics. -Particle mixing and segregation. -Heat and mass transfer. -Fluidised bed chemical reactors. -Fluid-bed applications to waste management and energy recovery. -Theories of nucleation and crystal growth. -Measurement of nucleation and growth kinetics. -Crystallisation processes and crystallisers. -The population balance and crystalliser design.