In all cases only mechanical recycling processes are to be considered for hotel textiles since it is not practicable to regain polyester from textile blends.
Textile incineration and associated energy regains would be a better option for non-composing material, such as polyester, than dumping into landfills. Incineration of 50/50 CO/PES produces, on the average, 19.9 MJ/kg energy based on the heat values for pure fibres. Cellulose-polyester blends produce less char when incinerated, and polyester decomposes in lower temperature than pure fibres do [13]. Cellulose, such as cotton, is decomposed when dumped into landfills. The average amount of gas from decomposing material in landfills is 5 - 6m3 / kg including mainly CH4 and CO2 gases. The energy regain of decomposed textiles is, however, considered to be insignificant compared to energy regains from textile incineration [23].
The LCA inventories for processes under study included only amounts of solid waste, such as loose fibres from textile production processes. The amounts of other wastes associated with these processes, such as packaging materials, are not accounted to this study. They should, however, be accounted to the production plant eco-balance.