J.I.N. Rocha Gomes, C.J.E. Lima and J.R.Almeida - ppt video online download: Introduction Four main factors must be considered for any new process in the dyehouse: water , due the scarce resources available energy, due to its cost. pollution due to the limits imposed and the ecological awareness of today’s society. time, or duration of the process, which must be in line with the requirements for high productivity The process of dyeing Cotton/Polyester blends with reactive/disperse dyes is an example of a typical process that is highly polluting, wastes water, energy and time