Author/Authors :
taoufik, m. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco , taoufik, m. centre régional des métiers l’education et de la formation, Casablanca, Morocco , elmoubarki, r. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco , moufti, a. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco , moufti, a. centre régional des métiers l’education et de la formation, Casablanca, Morocco , elhalil, a. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, morocco , farnane, m. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco , machrouhi, a. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco , abdennouri, m. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco , qourzal, s. université ibn zohr - faculté des sciences - equipe de matériaux, photocatalyse et environnement, département de chimie, Agadir, Morocco , barka, n. university of hassan 1 - fpk - laboratoire des sciences des matériaux, des milieux et de la modélisation (ls3m), Khouribga, Morocco
Abstract :
Landfill leachate is a complex mixture containing toxic and recalcitrant substances with considerably low BOD_5/COD indicating the necessity and difficulty of its treatment. Amongst treatment processes, integrated separating-destructive processes are promising gones. In this way, suspended and colloidal particles get separated in a separating process, while the soluble fraction under goes separating process; probably an coagulation-flocculation process. In this study, coagulation process using ferric chloride was employed as apre-treatment process for landfill leachate. Elimination of COD and turbidity was investigated using response surface method (RSM) with Box-Behnken design. Design experiments were modeled and analysed. In optimum conditions (7.2g/L FeCl_3 and 0.2mL/L flocculant) the average COD removals were occurred approximately 45%.
Keywords :
Landfill leachate Coagulation , floculation , Response surface methodology , Box–Behnken design , Optimization , COD
