Zaharia, CarmenȘuteu, Daniela2026-06-022026-06-0220131454-7376https://repository.iuls.ro/handle/20.500.12811/6490An experimental planning of sorption on sawdust (as ‘low cost’ sorbent) applied for a real textile effluent (i.e. collected after the dyeing and rinsing steps of cotton fabrics manufacturing) is discussed using a 23 central compositive rotatable planning. It was elaborated an empirical model considering the sorbent concentration, pH and temperature of textile effluent as indepen-dent variables, while the decoloration degree (color removal) was chosen as optimization criterion. The highest decoloration degree was 65.815 % after 24 hours of continuous static sorption. The proposed model was found adequate for the real effluent treatment by sorption on sawdust as primary treatment step.endecision variablesempirical modelexperimental planning (23)optimization criterionreal textile effluentsawdustsorptionArticle2069-8275