Bioreactors are the heart of many biotechnological systems that are used for agriculture, environmental, industrial and medical applications. This book presents the design, properties and applications of bioreactors. Topics discussed include bioreactors for microalgae; application of different types of bioreactors in bioprocesses; airlift bioreactors and its application in fermentation and wastewater treatment; development and deployment of a bioreactor for the removal of sulfate and manganese from circumneutral coal mine drainage and kinetic coefficients and factors affecting aeration efficiency as design parameters of MBR.