Book excerpt: This book covers a range of important topics on environmental remediation, biofuels and value-added microbial products for environmental clean-up, water and wastewater recycling and sustainable wastewater treatment using microalgae. Designed to document advances in biotechnology, this book highlights bio-resource utilization in fostering low-carbon renewable energy-based economies and provides new insights into chlorine disinfectant usage in water treatment, wastewater treatment using microalgae, etc. The book will be useful reference material for scientists and researchers in the fields of microbial biotechnology and bioremediation, environmental biotechnology and sustainable development, climate change mitigation, provision of safe water and sustainable wastewater recycling. Emphasizes recent advances in bioremediation techniques towards environmental sustainability Provides detailed information on how to harness indigenous bio-resources including microorganisms as bioenhancement agents for environmental remediation Introduces new frontiers in the area of wastewater treatment using microalgae — important for sustainability and water safety Reviews biotechniques that could enhance higher levels of sustainability in heavily polluted environments and also provides an intelligent monitoring system for waste recycling and environmental remediation, and fostering a low-carbon renewable energy–based bioeconomy Discusses the need for review of existing guidelines on chlorine disinfectant usage for enhanced water quality Akinola Rasheed Popoola, Ph.D., is a Professor of Plant Pathology and the Director of the Biotechnology Centre, Federal University of Agriculture, Abeokuta, Nigeria. Emeka Godfrey Nwoba, Ph.D., is a research scholar at the Algae Research & Development Centre, Murdoch University, Western Australia. James Chukwuma Ogbonna, Ph.D., is a Professor of Microbiology and Biotechnology and Director, National Biotechnology Development Agency, South East Zonal Biotechnology Centre, University of Nigeria, Nsukka, Nigeria. Charles Oluwaseun Adetunji, Ph.D., is an Associate Professor of Microbiology and Biotechnology, and Director of Intellectual Property and Technology Transfer, Edo State University, Uzairue, Nigeria. Nwadiuto (Diuto) Esiobu, Ph.D., is a Professor of Microbiology and Biotechnology at Florida Atlantic University, Boca Raton, FL, USA, and the President and Founder of Applied Biotech Inc. and ABINL, Abuja, Nigeria. Abdulrazak B. Ibrahim, Ph.D., is a Capacity Development Expert at the Forum for Agricultural Research in Africa (FARA) and an Associate Professor of Biochemistry, Ahmadu Bello University, Zaria, Nigeria. Benjamin Ewa Ubi, Ph.D., is a Professor of Plant Breeding and Biotechnology and Director, Biotechnology Research and Development Centre, Ebonyi State University, Abakaliki, Nigeria.