Bioenergy Engineering: Fundamentals, Methods, Modelling, and Applications presents the fundamental principles, recent developments, innovative state-of the-art technologies, challenges, solutions and future perspectives on the production of biofuels and bioenergy. Balancing the scientific and engineering aspects of biofuels production, the book guides readers through the chemical kinetics, modeling, thermodynamics, unit operations and technological advancements in fuel processing from conventional and alternative resources. Each chapter of the book starts with the fundamentals and goes on to assess the latest technologies for the production of renewable fuels on topics. Sections cover biomass utilization, biomass-to-liquid conversion technologies (pyrolysis, liquefaction, solid-state fermentation and submerged fermentation), biomass-to-gas conversion technologies (thermochemical gasification, subcritical and supercritical water gasification, and methanation), gas-to-liquid conversion technologies (Fischer-Tropsch synthesis), carbonization, transesterification, organic transformation, carbon-carbon and carbon-heteroatom coupling reactions, oxidation, reforming, hydrotreating technologies (hydrogenation, hydrodesulfurization, hydrodenitrogenation, hydro dearomatization and hydro demetalization), nanocatalysis and biocatalysis (enzymatic hydrolysis), and much more.

Membrane technologies play an increasingly important role in unit operations for resource recovery, pollution prevention, and energy production, as well as environmental monitoring and quality control. They are also key component technologies of fuel cells and bioseparation applications. Membrane Technologies and Applications provides essential data and background information on various dimensions of membrane technologies, with a major focus on their practical application. Membranes of inorganic materials offer cost-effective solutions for simple to complex separation problems. This book is designed for anyone interested in water and wastewater treatment, membrane suppliers, as well as students and academics studying the field.

This book describes the essential characteristics of graphene, graphene oxide, reduced graphene oxide, and its nanocomposite and their applications in water and wastewater treatment and other environmental issues. The book introduces each topic in detail, discusses the basic principles, and analyzes and summarizes recent developments in the field. Various topics covered in this book include role of graphene as a potential material in photocatalytic organic pollutant degradation, water splitting applications, capacitive de-ionization techniques, air purification, gas adsorption, and decontamination of pathogenic microorganisms. Given the contents, the book is useful for students, researchers, and professionals working in the area environmental science and materials, especially graphene oxide, graphene, and graphene nanocomposite.

Compiling recent advances in membrane separations technology, this highly relevant book introduces cost-effective solutions for separation problems in a wide range of industries. It discusses membrane use in oil, petrochemicals, and fossil fuels; natural gas exploration; bioseparation; water purification and wastewater treatment; and chemical manufacturing. It describes the role of membrane technologies in resource recovery, pollution prevention, and energy production, as well as environmental monitoring and quality control. A concise resource for emerging technologies, this book provides the tools to implement effective production processes, improve environmental protection and public health, and explore new opportunities for sustainable growth.

A novel multi-stage external loop airlift reactor (MS-ELALR) has been designed to remove phenol and Cr(VI) from wastewater by means of their adsorption onto the surface of activated carbons. The multi-staging has been achieved by hydrodynamically induced continuous bubble generation, breakup and regeneration. The typical values of gas holdup, liquid circulation velocity, interfacial area and volumetric mass transfer coefficient of the MS-ELALR were found to be 0.42-0.66, 0.04-0.13 m/s, 70-300 m2/m3 and 0.01-0.5 s-1 respectively. Powdered activated carbons were prepared from four different biomasses by chemical activation and were used to remove Cr(VI) and phenol from wastewater in this MS-ELALR. The results obtained were encouraging and confirmed that both Cr(VI) and phenol can be effectively removed using the method of liquid-phase adsorption in the MS-ELALR.

As India progresses fast in the 21st century, we also face daunting challenges of energy security and climate change. Tremendous development in various sectors like industry, agriculture, transport has resulted in huge rise in demand for energy. Fulfilling these demands through conventional fossil fuel based energy generation has given rise to significant emissions (both gaseous and liquids) that have caused pollution to atmosphere and aquatic eco-systems. Use of sustainable and green (or renewable) resources and technologies offers a viable and promising solutions to these issues. Last two decades have witnessed intense research activities in Indian academic institutions on renewable energy resources. These include biofuels (both liquid and gaseous) through thermochemical and biochemical conversion of biomass, solar energy through thermal and photo-voltaic routes, wind energy and hydroelectric energy. North-East Research Conclave (NERC) – 2022 was organized by Indian Institute of Technology Guwahati with aim of bringing together researchers in diverse fields of science and technology and provide a knowledge-sharing platform to achieve sustainable development goals. This monograph contains papers presented in the session on Sustainable Energy Generation and Storage in NERC. A total of 16 papers in this monograph cover wide areas in renewable energy. The contents of this monograph will of interest to students and researchers in academic institutions as well as industry.