Characterization of Coffee Husk Based Activated Carbon for Adsorption of Lead (II) from Battery Manufacturing Wastewater
Ei Ei Tun 1, Yu YuWah 2, Ni Ni Myint 3
Department of Chemical Engineering, West Yangon Technological University, Yangon, Myanmar
Content of metal ion in drinking water and wastewater, especially with heavy ion such as lead, is a serious and ongoing problem. In this study, removal of lead (II) from battery manufacturing wastewater by adsorption using activated coffee husk as a natural adsorbent. The coffee husk based activated carbon was prepared by chemical activation with phosphoric acid. Among purification treatment methods, adsorption is an attractive method to remove pollutants in water and wastewater. This adsorption study was optimized and analysed by applying Box-Behnken design in response surface methodology (RSM). The optimum condition was found of contact time (50 min), adsorbent dosage (0.53 g), pH (7.55) and its removal efficiency of lead (II) is 95%. The final concentration of lead (II) was established by Atomic Absorption Spectrometer (A.A.S). In addition, surface morphology and properties of activated coffee husk were studied by using scanning electron microscope (SEM) and Fourier Transform Infra-red (FTIR) spectrometer.
- Adsorption, Activated Coffee Husk, Wastewater, Removal efficiency of Lead (II), Response surface methodology