The book is devoted to the development of methods of chemical and thermal modification of lignocellulosic wastes from agriculture, food and processing industries in order to obtain a wide range of sorbents for environmental purposes. The obtained quantitative characteristics of the sorption capacity of modified materials can be used when creating technologies for the treatment of wastewater and soil from anthropogenic contamination. The book may be useful for specialists-ecologists, as well as for scientists interested in sorption technologies.