Study on Adsorption Efficiency of Corncob for Nickel in Water
- VernacularTitle:玉米芯对水中镍吸附效果的研究
- Author:
Jianfeng FAN
;
Huiyong KONG
- Publication Type:Journal Article
- Keywords:
Corncob;
Adsorption;
Water;
Nickel
- From:
Journal of Environment and Health
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the adsorption capability of corncob for Ni2+ in water. Methods The tests were conducted on the factors including pH value, the initial concentration of Ni2+, adsorption time, temperature and absorbent dosage influencing the adsorption effect, and the adsorption capability of the desorbing corncob for Ni2+ in water compared with the fresh corncob. Results In the condition of 35 ℃, 0.1 g of corncobs, 20 ml of 10 mg/L Ni2+ solution, pH=6 and contact time of 2.5 h, the adsorption capacity of Ni2+ could be up to 1.6 mg/g. The adsorption data fit the Freundlich adsorption isotherm and the Langmuir adsorption isotherm. HCl could be used to desorb corncobs ladening Ni2+, the desorbed corncob had the same adsorption capacity and rate of the desorbing as the fresh corncob. Conclusion The corncob can effectively remove Ni2+ in water, and the desorbed corncob can be reused.
