One solution to deal with growing waste volumes generated today is co-processing it with fuel in cement kilns. In Mexico, Cemex?s Tepeaca plant receives solid urban waste and puts it to use as alternative fuel to fire its kiln. Waste separation centres in Mexico have different manual and mechanical processes to separate refuse into diffe-?rent products. PET, aluminium, metals and glass, and other materials, which are economically viable to recycle, are sent to specific facilities for recycling. Organic fermentable material is used to produce compost or biogas. The rest is used as fuel supplement.