Relevant to production of value-added chemicals are biological waste sources containing complex and highly functionalized feedstocks. Main sources of such molecules are lignocellulosic waste (paper/cardboard, wood, and horticultural) and food waste. Wood waste include crates, boxes, wooden planks used in construction, furniture and pallets, and horticultural waste includes tree trunks, branches, plant parts, trimmings. Food waste comprises domestic waste (households and residential complexes) as well as non-domestic (for instance restaurants, hotels, shopping malls). Other waste types, such as ferrous metal or construction debris, either lack the desired molecular structures, or are generated in rather small quantities.