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Thousands of chemicals and materials with varied properties and functionalities are manufac‐ tured and used for commercial and day-to-day applications, whose ultimate fate in the environment may not be known. During their manufacture and use, these substances are often discharged into the environment through different routes in air, water and land. Creation of tremendous quantities of solid waste of all kind and its effective disposal has posed innumera‐ ble problems that need technological breakthroughs. Many of these substances degrade slowly and exert toxic effects on plants and animals, thus causing large scale environmental degrada‐ tion [1, 2]. Pollution by abandoned plastic articles is also a matter of great concern [3]. Industri‐ al wastewaters associated with the manufacture of organic chemicals are voluminous and characteristically have concentrations ranging from a few ppm to a thousands of ppm. Biodegra‐ dation of such dissolved pollutants is an area of immense interest to various sectors. Emission of volatile organic compounds (VOCs) from various sources has detrimental effects on quality of air we breathe and on environmental phenomena. Biodegradation, either aerobic or anaero‐ bic, can be an approach to cleave big molecules through a series of steps in to smaller mole‐ cules from a mosaic of chemicals and materials and some of them can be valorized as pollution abatement strategy and source of energy through biogas generation [2]. Biogas can be pro‐ duced from nearly all kind of biomass, among which the primary agricultural sectors and various organic waste streams can be properly tapped as renewable source of energy. Untreated or poorly managed animal manure is a major source of air and water pollution. Nutrient leaching, mainly nitrogen and phosphorous, ammonia evaporation and pathogen contamination are some of the foremost threats [3]. A conservative estimate is provided by Steinfeld et al. [4] that the animal production sector is responsible for 18% of the overall green house gas emissions, measured in CO2 equivalent and for 37% of the anthropogenic methane, which has 23 times the global warming potential of CO2. Furthermore, 65% of anthropogenic nitrous oxide and 64% of anthropogenic

Methods for Separation, Recycling and Reuse of Biodegradation Products