| Title |
Adsorption Property of Rice - Hull Activated Carbon |
| Authors |
김광수 ; 최희철 ; 배영진 ; 안재환 ; 조형래 ( Kwang Soo Kim ; Hee Chul Choi ; Young Jin Bae ; Jae Hwan Ahn ; Hyung Lae Cho ) |
| Abstract |
An experiment was conducted to compare the adsorption capacity and characteristics between activated carbon made of rice-hull(RHAC) and F-400 by Calgon to remove phenol, heavy metal and ammonia-nitrogen. While F-400 could not remove ammonia-nitrogen, RHAC was able to adsorb it. This is considered to be due to the ion exchange capability of SiO₂ remaining on the surface of RHAC. From the isotherm equilibrium test, it was found that RHAC has higher adsorption capacity than the existing activated carbon. In column tests, however, the slope of breakthrough curves of RHAC which represent the affinity of adsorbent, was observed to be more gradual than F-400. This may be attributed to the competitive reaction between ion exchange and physical adsorption. For heavy metals, F-400 would remove Cr and Pb except Cd, whereas RHAC was able to remove Cd, Pb except Cr. |