REMOVAL OF BASIC BLUE 3 AND REACTIVE ORANGE 16 BY ADSORPTION ONTO QUARTENIZED SUGAR CANE BAGASSE

Abstract The effectiveness of using sugar cane bagasse, an agricultural by-product, as a sorbent to remove basic and reactive dyes from aqueous solution was studied. The quartenized sugar cane bagasse (QSB) is capable in removing both Basic Blue 3 (BB3) and Reactive Orange 16 (RO16). The sorption of dye solutions was strongly affected by pH, where the optimum pH is 6-8. The kinetics of the dye sorption processes fitted a pseudo-second order kinetic model. Results indicated that the adsorption isotherms fitted well into both the Langmuir and Freundlich isotherms. The removal of BB3 was favourable at higher temperature, indicating that the sorption process was endothermic. On the other hand, sorption of RO16 on QSB was more favourable at low temperature. Keywords: Sugar cane bagasse; quartenization; sorption; reactive dyes; basic dyes Abstrak Keberkesanan menggunakan sisa tebu, produk sampingan pertanian, sebagai penjerap untuk menyingkirkan pewarna basik dan reaktif daripada larutan telah dikaji. Sisa tebu yang diquarternasi (QSB) adalah berupaya untuk menyingkirkan keduadua pewarna Basik Biru 3 (BB3) dan Reaktif Oren 16 (RO16). Penjerapan pewarna adalah dipengaruhi oleh pH, di mana pH optimum ialah 6-8. Kinetik proses erapan pewarna didapati mengikut model kinetik tertib pseudo-kedua. Keputusan eksperimen menunjukkan bahawa isoterma penjerapan mematuhi kedua-dua isoterma Langmuir dan Freundlich. Penyingkiran BB3 adalah lebih baik pada suhu tinggi, menunjukkan proses erapan adalah endotermik. Manakala erapan RO16 ke atas QSB adalah lebih digemari pada suhu rendah