Study of inhibiting effect of orange peel on hard growth water

Scaling is one of undesirable problems of natural hard water,which causes enormous technical and economic consequences by the formation of compact and adherent deposit on pipes and industrial or domestic installations. the present work examines the effect of natural inhibitor (orange peel) on the caco3 precipitation in algerian ground water of bounouara having a hardness of 58°f. the main objective was to reduce the scaling power and then to prevent the fouling phenomenon met in the equipments supplied by this water. chronoamperometry tests show that bounouara water is extremely scale-forming water by scaling time of (te = 9.17min) and an index scaling (ie = 107 min-1). the accelerated scaling curves registered at different temperatures of raw water of bounouara showed that scaling time decreases by increasing the temperature,and bounouara water become more scale-forming in high temperatures. the anti-scale treatment with orange peel is more efficient in low temperature,because the total inhibition of hardness of bounouara water was realized at 20°c with an addition of 0.75g/l of orange peel but at 40°c,1g/l of orange peel must be added to bounouara water to totally block the precipitation of tartar. so orange peel is an effective inhibitor for the scaling treatment of drinking water and for the valorization of orange peel and protection of the environment from food industry waste that reject 60% of citrus fruits in the form of waste. © 2017,university of mohammed premier oujda morocco.