In the present research, native starch was prepared from dent corn (Zea mays L.) and the prepared native starch was modified by phosphorylation to get biodegradable bio-flocculants. The processed modified starch bio-flocculants were applied in the treatment of food wastewater. The physico-chemical properties of dent corn such as protein, fiber, fat, moisture, carbohydrate and ash contents were determined by AOAC (2000) method. The physico-chemical characteristics of native starch and modified starch (bio-flocculants) such as iodine test, bulk density, the degree of substitution, swelling power, amylose and amylopectin contents were determined. The flocculation efficiency of the processed bio-flocculants by using ferric laurate suspension and the optimal transmission percentage was investigated. The properties of food wastewater such as pH, colour, turbidity, total solids, dissolved solids and suspended solids before and after treatment with processes bio-flocculants were also determined
