Removal of dyes from textile effluents by chemical coagulation
نویسندگان
چکیده
Surface charge density studies as well as characterizations of coagulated dye sludge were investigated to explain the mechanism which takes place during removal of dyes from effluents by chemical coagulation. A simple laboratory model was used to compare two commercially used textile azo dyes: CI “Reactive Black 5” and “Acid Black 1” that were coagulated with synthetic primary coagulants have been chosen. Parallel to measurement of surface charge density of coagulated dye sludge, size and shape analysis of flocs was done in order to link surface charge data with floc properties and on this basis to outline the predominant mechanism of colour removal.
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