Over the last couple of decades, rapid urbanisation, unplanned industrialisation, and a rising population jointly created several issues worldwide, particularly in developing and underdeveloped countries. One such issue that requires urgent attention is the ever-increasing waste problem which has become an exasperation for regional and local governments and an issue of both national and international importance. Waste in any form and character are the byproduct of anthropogenic activities. To move forward towards a cleaner and greener future, we need to deduce sustainable technologies -- to reduce, reuse and recycle our waste. This book includes important information and views on new developments of waste management technologies, especially from developing and underdeveloped countries. In this book, there are contributions of experts from different countries. Each one of them shows interesting research outputs on waste management technologies which are both economical and eco-friendly; and if applied properly, can lead us towards a 'zero-waste' world.