Sentence:  Upcycling requires that innovation be integrated with sustainable product development. Several innovative products can be manufactured by <WSD>upcycling</WSD> the unrecyclable wastes, such as plastic rejects from municipal solid waste. Such products include bricks, interlocks, manhole covers, table toppings, and road rampsnb.... 
Meaning of the word marked with <WSD> tags:  To convert (waste materials, etc.) into new materials or products of higher quality and greater functionality. (from 1990s)