This book summarizes recent research development on biochar production and applications with a focus on the application of biochar technology in wastewater treatment. An overview succinctly summarizes different technologies for biochar production and characterization, with an emphasis on pre-treatment of feedstock and post treatment. Subsequent sections are organized according to each potential roles of biochar in different sectors of wastewater treatment, i.e., (i) adsorption (ii) filtration, (iii) anaerobic degradation, (iv) sludge composting, (v) advanced oxidation process, (vi) pharmaceuticals and personal care products and emerging contaminants removal. These chapters  discuss the mechanisms of biochar’s various role in different functions of wastewater treatment and include recent research advances in condition optimizations and improvements to update the material with desirable environmental effect. Discussions and case studies are incorporated in treating industrial wastewater, agricultural wastewater, and stormwater, to separately discuss and emphasizes the promising prospects of biochar technology in the treatment of various wastewater in actual utilizations. Perspectives and future research directions of the emerging biochar technology in wastewater treatment are presented to provide insights for the readers and researches in biochar application in wastewater treatment.

Daniel C.W. Tsang is a Professor and MSc Programme Leader in Department of Civil and Environmental Engineering at the Hong Kong Polytechnic University, and Pao Yue-Kong Chair Professor in State Key Laboratory of Clean Energy Utilization at Zhejiang University. Dan strives to develop low-carbon engineering solutions to ensure sustainable urban development and attain carbon neutrality. Dan has published over 500+ articles in top 10% journal (h-index 105, Scopus). Dan was selected as Highly Cited Researchers 2022 in the academic fields of Engineering as well as Environment and Ecology.

Yuqing Sun is an Assistant Professor in the School of Agriculture at Sun Yat-Sen University. Her research covers the customized design and application of engineered biochar in green and sustainable wastewater treatment. Dr. Sun has published 50+ publications in top 10% journals (h-index 37, Scopus). Dr. Sun was selected as Highly Cited Researchers 2022 in the academic field of Cross Field.