Abstract—A new composite material (MCPAM), which was prepared from magnesium chloride premixed with polyacrylamide, was applied in flocculating simulated reactive dye (Cibacron Red FN-R) wastewater. Effects of different conditions such as pH, temperature, concentration of dye and dosage of composite polymer were taken into account to investigate their effect on dye removal (%). pH 12 gave the maximum dye removal (%). Flocculation of simulated reactive dye wastewater was carried out in the range of 20 - 50oC to investigate the effect of temperature on the dye removal (%). Results showed that the dye removal (%) decreased with the increase of temperature. An interaction effect was observed between temperature and concentration of dye where the dye removal (%) decreased with the increase of dye concentration from 200 to 500 mg/L at 20oC. However, at temperature beyond 30oC, an inverse behaviour was observed. Effect of dosage on the dye removal (%) was studied with respect to concentration of dye. The dye removal (%) was found to increase to a maximum value of 99% and decrease thereafter, indicating the re-suspension of destabilized flocs into the supernatant.

Index Terms—Inorganic-organic composite polymer, flocculation, reactive dye, wastewater.

Khai Ern Lee, Norhashimah Morad, Tjoon Tow Teng and Beng Teik Pohare with School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia. (e-mail: nhashima@usm.my)

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Cite: Khai Ern Lee, Norhashimah Morad, Tjoon Tow Teng, and Beng Teik Poh, "Effects of Different Conditions on the Removal of Dye from Reactive Dye Wastewater Using Inorganic-Organic Composite Polymer," International Journal of Environmental Science and Development vol. 3, no. 1, pp. 1-4, 2012.