In the past few decades, our planet has witnessed an unprecedented surge in population, carbonemissions, and the demand for essential resources, particularly energy and water. This exponentialgrowth has come at a cost: a staggering increase in waste and wastewater, presenting formidablechallenges to our environment and sustainability. Faced with this urgent dilemma, the imperativeto develop innovative technologies for resource recovery has never been more critical. Amidst thischallenge, algae, tiny yet extraordinary photosynthetic organisms, have emerged as potent microbiotain the quest for environmental solutions. In this context, this book Algal Systems for ResourceRecovery from Waste and Wastewater testifies to the pivotal role algae can play in addressing someof the world’s most pressing issues.