This book highlights diverse composting techniques, including vermicomposting, bacterial cellulose-based composting, and inoculum-based solutions, illustrating their role in sustainable waste management and nutrient-rich soil production. It also addresses advanced methods in liquid fertilizer production, such as green chemistry approaches, the role of microorganisms, and the potential of biofertilizer consortia to enhance crop nutrition and soil enrichment. Practical applications in agriculture are emphasized throughout, including the benefits of liquid organic fertilizers for sustainable farming and strategies to minimize environmental impacts, such as reducing nutrient runoff and mitigating water pollution. The book also highlights the importance of engaging local communities to promote sustainable farming practices and innovative waste management solutions.

Designed for scientists, engineers and professionals in agriculture, environmental science, and waste management, this book serves as both a scientific reference and a practical guide. Policymakers, agricultural practitioners, and community organizations will also find valuable insights for implementing effective and sustainable organic waste solutions.

Dr. Abu Zahrim Yaser is an Associate Professor in the Chemical Engineering Programme at Universiti Malaysia Sabah (UMS), where he also serves as Dean of the Faculty of Engineering. He is the founder of the Kundasang Compost Living Lab and obtained his Ph. D. from Swansea University. Dr. Zahrim is a recipient of the National Book Award (2023).

Dr. Mariani Rajin is a senior lecturer at Universiti Malaysia Sabah (UMS). She holds a Ph.D. in Chemical Engineering from Universiti Sains Malaysia. Her research interests include composting, enzymatic reactions, and enzyme technology.

Dr. Sariah Saalah is a senior lecturer in the Chemical Engineering Program at Universiti Malaysia Sabah (UMS). She earned her Ph.D. in Chemical Engineering from Universiti Putra Malaysia, specializing in biopolymers. Her research focuses on composting, biopolymers, polyurethane synthesis, nanomaterials, and water-based coatings.