This book features a collection of carefully selected papers that were presented at the 11th International Conference on Combustion, Incineration/Pyrolysis, Emission and Climate Change, i-CIPEC 2024. The conference was held in Kuala Lumpur, Malaysia from December 18–20, and focused on the latest advancements and technologies in the field of thermal engineering and carbon reduction technologies. The papers included in this book highlight the need for sustainable and efficient energy sources in the topics related to combustion technology, conversion to clean energy, waste-to-energy conversion, emission control, global warming and greenhouse gases, environmental health effects, economy and policy.  The papers are authored by an international group of academics, research scientists, and industry experts, making this book valuable to a global audience in the fields of environmental engineering, sustainable energy systems, and climate change mitigation.